Lab599 Discovery TX-500 User manual

USER MANUAL
HF/50MHz Transceiver TX-500

Introduction
Controls end user interface
Protections
Basic Operations
Advanced Operating
Accessories
Firmware Upgrades
Remote Control
Menu Functions
Maintenance
Specifications
Table of contents
2
3
4
8
10
15
17
19
20
21
26
28

Introduction
3
On behalf of our development team, we want to thank you for choosing the TX-500
Discovery. The TX-500 is an ultra compact all-mode transceiver ideal for travelling; its
compact size and weight mean that you can take the instrument to remarkable places,
where radio work will give you an unforgettable experience.
The strong casing, protection against splashes and dust ensure the use of TX-500 in
extreme conditions and guarantee its reliability. A sharp monochrome display will allow
you to clearly see the information in either bright sunshine or low light, thanks to a
multi-mode backlight. The transceiver parameters and functions will also make it possible
to successfully use the unit at a home station or as a mobile version. Record-low current
consumption in reception mode (up to 110 mA) will extend the battery life, providing for
longer stay on the air without recharging.
Because the TX-500 is a software-defined radio (SDR), you can expand its capabilities
using computer applications and adding new features with free firmware updates. The
TX-500 Discovery has an integrated high-performance spectrum analyzer, allowing you to
see signals before you hear them.
It's high time to go off into the deep blue yonder, taking the TX-500 with you.

Top function keys
RIT/XIT On / Off
Clear RIT / XIT
VFO / Memory
Lock / Unlock VFO
Step VFO
Power On/Off
Band Up / Down
Basic mode
Passband filter
Menu mode
Receiver gain control (RX mode)
Monitor volume (TX mode)
Tune VFO A, B / Menu Settings
RX / TX offset
Bottom function keys
DEVICE BODY AND CONTROLS
Controls end user interface
4
Front view

Controls end user interface
Right side
Left side
Power supply
DC 9-15V
1 – GND
2 – (+) DC 9-15V
1 – PHONE –
2 – DYNAMIC MIC
3 – PTT
4 – PHONE +
5 – MIC (DC+)
6 – GND
1 – PTT
2 – PTT OUT
3 – AUDIO OUT
4 – AUX Q
5 – AUX I
6 – AUDIO IN
7 – GND
25
61
2
4
5
6
3
4 3
2
1
7
1
Microphone
Speaker
REM
DATA
1
4
5
3
2
CW KEY ANTCAT
4
3
1
2
1 – GND
2 – RX
3 – +DC USB
4 – TX
1 – GND
2 – “•”
5 – “–”3 – NC
4 – NC
5
Antenna (50Ohm)

Controls end user interface
1
2
4
3
6
5
7
8
9
Main display
USER INTERFACE
1 9 Function buttons
2Information bar title
<< EQ RX EQ TX >>
CRM ECHO VOX D METR
TX/RX mode
Clock
battery low
Autogain control
(delay 1-10)
Hight temperature
alert
Clock
Supply voltage
Step VFO (Step RIT/XIT), Hz
or LOCK VFO
VFO offset, Hz (RIT/XIT)
6

Controls end user interface
4Info block 1 3VFO A / B
Basic modes or alternative modes:
Filter band width
Receiver gain (0-100)
Monitor (0-100)
Radio frequency gain
Volume (-50+5)
ABCDEFG
VFO A
Basic VFO
VFO B
6Info block 2
5Graph bar
A
C
B
D
F
G
E
L
H
I
J
K
– Noise reduction ON
– Noise blanking ON
– Notch filter ON
– Attenuator ON
– Monitor ON
– VOX ON
– Speech compression ON
– Preamp ON
– Echo speech ON
– Squelch ON
– Split mode effect ON
– Virtual intermediate frequency ON
Power output (PWR),
SWR, MIC, ALC
Transmit mode:
Power output (NUM),
SWR (NUM)
Receive mode:
S-meter
7Pan-adapter 8Menu
Menu Up Menu Down
– Function buttons
Receiving or transmission channel
7

Protections
8
OVERVOLTAGE PROTECTION
When exceeding 15.0 volts, the transceiver won’t allow switching to TX mode, (the voltage
indicator on the display will become inverse) a significant excess (more than 16 volts) it can
cause the protective fuse to burn out, as well as the failure of the transceiver ! Use a power
source or battery with a voltage of 9 to 15 volts and a current of at least 2.5 Amps.
ATTENTION! Exceeding the supply voltage above 15 volts can damage the
transceiver!
REVERSE POLARITY PROTECTION
If you connected a minus voltage source or battery instead of a plus, the transceiver will not
turn on. You must connect the external power supply correctly, please, see the pinout of the
power connector in the section "Controls end user interface”.
OVERHEAT PROTECTION
The transceiver has an internal protection against the overheating of the output stage of the
transmitter. If the TX continuous mode is too long, the output stage as well as the
transceiver body can be heated up. If the limit value is exceeded (about 60 degrees Celsius),
the transceiver won’t allow switching to TX mode. After the temperature drops, the TX
prohibition mode will turn off automatically.
ATTENTION! During long-term TX mode (digital modes) do not block the air
access to the rear cover of the transceiver, or reduce the power.
TIP: Unfold both rear legs to increase the air flow convection.
HIGH SWR PROTECTION
If the impedance of the antenna is different than 50 ohms and there is no antenna tuner
connected, the SWR indicator on the display will show a value greater than 1.0. If the SWR
value is 3.0 or more (the SWR indicator on the display will be inverse), the transceiver will
automatically reduce the power output. If the value of SWR is greater than 3.0, then the
output power will decrease more.
ATTENTION! Use a tuned antenna with a wave impedance of 50 ohms, this is
ideal (max output power), or use a matching device (automatic or manual tuner).
!
!

OVERVOLTAGE PROTECTION
When exceeding 15.0 volts, the transceiver won’t allow switching to TX mode, (the voltage
indicator on the display will become inverse) a significant excess (more than 16 volts) it can
cause the protective fuse to burn out, as well as the failure of the transceiver ! Use a power
source or battery with a voltage of 9 to 15 volts and a current of at least 2.5 Amps.
ATTENTION! Exceeding the supply voltage above 15 volts can damage the
transceiver!
REVERSE POLARITY PROTECTION
If you connected a minus voltage source or battery instead of a plus, the transceiver will not
turn on. You must connect the external power supply correctly, please, see the pinout of the
power connector in the section "Controls end user interface”.
OVERHEAT PROTECTION
The transceiver has an internal protection against the overheating of the output stage of the
transmitter. If the TX continuous mode is too long, the output stage as well as the
transceiver body can be heated up. If the limit value is exceeded (about 60 degrees Celsius),
the transceiver won’t allow switching to TX mode. After the temperature drops, the TX
prohibition mode will turn off automatically.
ATTENTION! During long-term TX mode (digital modes) do not block the air
access to the rear cover of the transceiver, or reduce the power.
TIP: Unfold both rear legs to increase the air flow convection.
HIGH SWR PROTECTION
If the impedance of the antenna is different than 50 ohms and there is no antenna tuner
connected, the SWR indicator on the display will show a value greater than 1.0. If the SWR
value is 3.0 or more (the SWR indicator on the display will be inverse), the transceiver will
automatically reduce the power output. If the value of SWR is greater than 3.0, then the
output power will decrease more.
ATTENTION! Use a tuned antenna with a wave impedance of 50 ohms, this is
ideal (max output power), or use a matching device (automatic or manual tuner).
!
Protections
9

GETTING STARTED
Before using the TX-500, you’ll need to connect a power supply, speaker-microphone and
an antenna, at minimum.
USING THE MENU
The menu is used to tailor the transceiver to your operating preferences.
To access the menu, push F until the any menu entry appears in the
pan-adapter area. To change the value of a menu parameter, rotate
MTUNE/MULTI (large knob).To exit the menu, push F again.
BAND SELECTION
The TX-500 covers the 160-6 m amateur bands. Characteristics of each band are
summarized below.
Basic Operations
Power supply
Speaker-microphone
Connect
antenna
Unfold Leg
AF GAIN — Controls receiver AF gain (volume).
Left side Right side
Best DXRang (Mhz)Band (m)
160
80
60
40
30
20
1.8-2.0
3.5-4.0
~5.3-5.4
7.0-7.3
10.0-10.15
14.0-14.35
Best DXRang (Mhz)Band (m)
17
15
12
10
6
18.068-18.168
21.0-21.45
24.89-24.99
28.0-29.7
50-54
10
MODE SELECTION
Each mode is described briefly below. Later sections cover each mode in detail. Tap D
one or more times to select USB (LSB), CW (CWR), DIG, AM or FM mode. Long push
selects alternate modes, such as CW reverse (CWR). Also, long push returns normal mode.
• SSB modes: Mode is a narrow-banded voice mode that conserves space in crowded
band segments. It’s the most popular mode overall. LSB (lower sideband) is usually used
on 160, 80, and 40 meters, while other bands use USB (upper sideband).
• CW mode requires very little bandwidth, providing a high signal-to-noise ratio that’s ideal
for low-power use. It’s also a popular mode for DXing and contests.
• CWR mode reversing the received sideband in CW mode. This may reduce the level
of interference (QRM).
• AM mode is characterized by its good fidelity. It is much less power-efficient than SSB.
• AM amateur operation is often found on 160, 80, 40, and 10 meters.
• FM mode is most often used for local communications, and can be found on 10m and up.
• DIG mode typically use a computer connected to the transceiver to send/receive text.
Although SSB modes can also be used for this purpose, the TX-500’s audio-based data
modes (E) optimize settings for data rather than voice.
VFOs A and B
The TX-500 provides two VFOs. Use of VFO B is optional. Each VFO has independent
frequency, mode, and filter settings:
• VFO A normally controls both the receive and transmit frequency. Most contacts occur
between stations tuned to about the same frequency.
• VFO B can serve as a holding register for a second frequency of interest, then swapped
with VFO A as needed (see A<>B).
• + - Tuning rates:
Tapping K or L selects VFO tuning rate LSB, USB, DIG (10Hz, 100Hz,
1kHz, 2.5kHz, 5kHz), CW, CWR (1Hz, 10Hz, 100Hz, 1kHz, 2.5kHz), AM, FM (100Hz, 500Hz,
1kHz, 2.5kHz, 5kHz). SSB stations often align on 0.5 or 1.0kHz boundaries.
• A->B To copy VFO A’s frequency to VFO B: Tap N>A->B. Tapping also copies VFO
A’s mode and filter settings to VFO B as well.
• B->A To copy VFO B’s frequency to VFO A: Tap N>B->A. Tapping also copies VFO
B’s mode and filter settings to VFO A as well.
• A<>B VFO A and B swap: Tap N>A<>B to exchange VFO frequencies, modes, and
all other settings.
RIT
Incremental Tuning, or receive incremental tuning, provides a means of adjusting the
receive frequency without affecting your transmit frequency. This control is sometimes
called a clarifier since it can be used to tune in SSB voice signals. But RIT can also be used
in all modes, in the event that a station calls you slightly off-frequency. RIT and XIT use the
tuning rate (1/10/100/200/300 Hz), taping K or L.
XIT
XIT or transmit incremental tuning, adjusts the transmit frequency without affecting the receive
frequency. RIT and XIT use the tuning rate (1/10/100/200/300 Hz), taping K or L.
• To use RIT or XIT: First, tap G RIT (RX mode) or tap G XIT (TX mode).
This turns on the "+0" on the display. Then adjust the offset using RIT/XIT knob.
• To zero the RIT/XIT offset tap H.
J VFO lock/unlock
When the mode is activated, the inscription appears in the upper line of the display "LOCK",
frequency tuning is not possible. To deactivate the mode, press the button J again.
TRANSMIT SETTINGS
• Voice Modes (SSB, AM, FM)
Choose a mode: Tap D to select A / B, F or G mode.
• MON, Monitor Push N>MON in the bottom line for MON on. Hold PTT to set the voice
monitor level, rotate MAF GAIN knob. High MON settings may result in audio clipping or
distortion. Start with 3 to 5.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
• Adjust mic gain level Push METR and select MIC, rotating MTUNE/MULTI.
While speaking into the mic, adjust F>09 > Gain > MIC (mic gain).
While speaking, adjust mic gain for maximum 10 bars on a scale. Mic gain for the
TX-500 mic is typically 10-20.
• CMR Speech compression: To use speech compression, tap N>CMR in the top line.
TX-500’s receive filter passband. In general, a narrow passband reduces interference
(QRM) and noise (QRN), while a wider passband improves fidelity. In voice modes, CW
and DIG modes long push E selects low-cut (LF) and high-cut (HF) frequency.
Pushing E select number of filter (1-4)RX, (1-2)TX. These functions remove low- or
high-pitched interfering signals. Reducing the width or shifting the passband may attenuate
an interfering signal above or below the desired one.
• PRE/ATT Preamp L and Attenuator D turns on the RF preamp. It should be used
only when signals are very weak. Preamp gain can be set on a per-band basis. D turns
on the 20-dB RF attenuator, which can protect the receiver from strong interfering signals.
• NR Noise reduction removes random background noise (hiss or static). It has a
characteristic “hollow” sound. Higher settings may attenuate weak signals. Tap N>NR
turns on noise reduction, holding N>NR and displays its setting, which can be adjusted
using the knob MTUNE/MULTI. Tap return to exit the setting display. Tap N>NR again
to turn noise reduction off.
• NB Noise blanking C can eliminate repetitive noise such as that from power lines,
appliances, and vehicle ignitions systems. The NB setting is adjusted in the same way as
NR (see above).
• NF in SSB and AM modes, B turns on auto-notch, which locates and suppresses one
or more carriers automatically, Push N>NF to enable or disable the Notch Filter.
• TONE (Transmission tone). The transceiver will transmit a single tone. Pressing “Tone”
N>TONE again puts the transceiver in RX mode. A long press of TONE displays the
selection mode NORMAL (1000 Hz) or DUAL (two tones of 1000 Hz and 2000 Hz).
The transmission power is approximately 50%.

MODE SELECTION
Each mode is described briefly below. Later sections cover each mode in detail. Tap D
one or more times to select USB (LSB), CW (CWR), DIG, AM or FM mode. Long push
selects alternate modes, such as CW reverse (CWR). Also, long push returns normal mode.
• SSB modes: Mode is a narrow-banded voice mode that conserves space in crowded
band segments. It’s the most popular mode overall. LSB (lower sideband) is usually used
on 160, 80, and 40 meters, while other bands use USB (upper sideband).
• CW mode requires very little bandwidth, providing a high signal-to-noise ratio that’s ideal
for low-power use. It’s also a popular mode for DXing and contests.
• CWR mode reversing the received sideband in CW mode. This may reduce the level
of interference (QRM).
• AM mode is characterized by its good fidelity. It is much less power-efficient than SSB.
• AM amateur operation is often found on 160, 80, 40, and 10 meters.
• FM mode is most often used for local communications, and can be found on 10m and up.
• DIG mode typically use a computer connected to the transceiver to send/receive text.
Although SSB modes can also be used for this purpose, the TX-500’s audio-based data
modes (E) optimize settings for data rather than voice.
VFOs A and B
The TX-500 provides two VFOs. Use of VFO B is optional. Each VFO has independent
frequency, mode, and filter settings:
• VFO A normally controls both the receive and transmit frequency. Most contacts occur
between stations tuned to about the same frequency.
• VFO B can serve as a holding register for a second frequency of interest, then swapped
with VFO A as needed (see A<>B).
• + - Tuning rates:
Tapping K or L selects VFO tuning rate LSB, USB, DIG (10Hz, 100Hz,
1kHz, 2.5kHz, 5kHz), CW, CWR (1Hz, 10Hz, 100Hz, 1kHz, 2.5kHz), AM, FM (100Hz, 500Hz,
1kHz, 2.5kHz, 5kHz). SSB stations often align on 0.5 or 1.0kHz boundaries.
• A->B To copy VFO A’s frequency to VFO B: Tap N>A->B. Tapping also copies VFO
A’s mode and filter settings to VFO B as well.
• B->A To copy VFO B’s frequency to VFO A: Tap N>B->A. Tapping also copies VFO
B’s mode and filter settings to VFO A as well.
• A<>B VFO A and B swap: Tap N>A<>B to exchange VFO frequencies, modes, and
all other settings.
RIT
Incremental Tuning, or receive incremental tuning, provides a means of adjusting the
receive frequency without affecting your transmit frequency. This control is sometimes
called a clarifier since it can be used to tune in SSB voice signals. But RIT can also be used
in all modes, in the event that a station calls you slightly off-frequency. RIT and XIT use the
tuning rate (1/10/100/200/300 Hz), taping K or L.
Basic Operations
11
XIT
XIT or transmit incremental tuning, adjusts the transmit frequency without affecting the receive
frequency. RIT and XIT use the tuning rate (1/10/100/200/300 Hz), taping K or L.
• To use RIT or XIT: First, tap G RIT (RX mode) or tap G XIT (TX mode).
This turns on the "+0" on the display. Then adjust the offset using RIT/XIT knob.
• To zero the RIT/XIT offset tap H.
J VFO lock/unlock
When the mode is activated, the inscription appears in the upper line of the display "LOCK",
frequency tuning is not possible. To deactivate the mode, press the button J again.
TRANSMIT SETTINGS
• Voice Modes (SSB, AM, FM)
Choose a mode: Tap D to select A / B, F or G mode.
• MON, Monitor Push N>MON in the bottom line for MON on. Hold PTT to set the voice
monitor level, rotate MAF GAIN knob. High MON settings may result in audio clipping or
distortion. Start with 3 to 5.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
• Adjust mic gain level Push METR and select MIC, rotating MTUNE/MULTI.
While speaking into the mic, adjust F>09 > Gain > MIC (mic gain).
While speaking, adjust mic gain for maximum 10 bars on a scale. Mic gain for the
TX-500 mic is typically 10-20.
• CMR Speech compression: To use speech compression, tap N>CMR in the top line.
TX-500’s receive filter passband. In general, a narrow passband reduces interference
(QRM) and noise (QRN), while a wider passband improves fidelity. In voice modes, CW
and DIG modes long push E selects low-cut (LF) and high-cut (HF) frequency.
Pushing E select number of filter (1-4)RX, (1-2)TX. These functions remove low- or
high-pitched interfering signals. Reducing the width or shifting the passband may attenuate
an interfering signal above or below the desired one.
• PRE/ATT Preamp L and Attenuator D turns on the RF preamp. It should be used
only when signals are very weak. Preamp gain can be set on a per-band basis. D turns
on the 20-dB RF attenuator, which can protect the receiver from strong interfering signals.
• NR Noise reduction removes random background noise (hiss or static). It has a
characteristic “hollow” sound. Higher settings may attenuate weak signals. Tap N>NR
turns on noise reduction, holding N>NR and displays its setting, which can be adjusted
using the knob MTUNE/MULTI. Tap return to exit the setting display. Tap N>NR again
to turn noise reduction off.
• NB Noise blanking C can eliminate repetitive noise such as that from power lines,
appliances, and vehicle ignitions systems. The NB setting is adjusted in the same way as
NR (see above).
• NF in SSB and AM modes, B turns on auto-notch, which locates and suppresses one
or more carriers automatically, Push N>NF to enable or disable the Notch Filter.
• TONE (Transmission tone). The transceiver will transmit a single tone. Pressing “Tone”
N>TONE again puts the transceiver in RX mode. A long press of TONE displays the
selection mode NORMAL (1000 Hz) or DUAL (two tones of 1000 Hz and 2000 Hz).
The transmission power is approximately 50%.

MODE SELECTION
Each mode is described briefly below. Later sections cover each mode in detail. Tap D
one or more times to select USB (LSB), CW (CWR), DIG, AM or FM mode. Long push
selects alternate modes, such as CW reverse (CWR). Also, long push returns normal mode.
• SSB modes: Mode is a narrow-banded voice mode that conserves space in crowded
band segments. It’s the most popular mode overall. LSB (lower sideband) is usually used
on 160, 80, and 40 meters, while other bands use USB (upper sideband).
• CW mode requires very little bandwidth, providing a high signal-to-noise ratio that’s ideal
for low-power use. It’s also a popular mode for DXing and contests.
• CWR mode reversing the received sideband in CW mode. This may reduce the level
of interference (QRM).
• AM mode is characterized by its good fidelity. It is much less power-efficient than SSB.
• AM amateur operation is often found on 160, 80, 40, and 10 meters.
• FM mode is most often used for local communications, and can be found on 10m and up.
• DIG mode typically use a computer connected to the transceiver to send/receive text.
Although SSB modes can also be used for this purpose, the TX-500’s audio-based data
modes (E) optimize settings for data rather than voice.
VFOs A and B
The TX-500 provides two VFOs. Use of VFO B is optional. Each VFO has independent
frequency, mode, and filter settings:
• VFO A normally controls both the receive and transmit frequency. Most contacts occur
between stations tuned to about the same frequency.
• VFO B can serve as a holding register for a second frequency of interest, then swapped
with VFO A as needed (see A<>B).
• + - Tuning rates:
Tapping K or L selects VFO tuning rate LSB, USB, DIG (10Hz, 100Hz,
1kHz, 2.5kHz, 5kHz), CW, CWR (1Hz, 10Hz, 100Hz, 1kHz, 2.5kHz), AM, FM (100Hz, 500Hz,
1kHz, 2.5kHz, 5kHz). SSB stations often align on 0.5 or 1.0kHz boundaries.
• A->B To copy VFO A’s frequency to VFO B: Tap N>A->B. Tapping also copies VFO
A’s mode and filter settings to VFO B as well.
• B->A To copy VFO B’s frequency to VFO A: Tap N>B->A. Tapping also copies VFO
B’s mode and filter settings to VFO A as well.
• A<>B VFO A and B swap: Tap N>A<>B to exchange VFO frequencies, modes, and
all other settings.
RIT
Incremental Tuning, or receive incremental tuning, provides a means of adjusting the
receive frequency without affecting your transmit frequency. This control is sometimes
called a clarifier since it can be used to tune in SSB voice signals. But RIT can also be used
in all modes, in the event that a station calls you slightly off-frequency. RIT and XIT use the
tuning rate (1/10/100/200/300 Hz), taping K or L.
XIT
XIT or transmit incremental tuning, adjusts the transmit frequency without affecting the receive
frequency. RIT and XIT use the tuning rate (1/10/100/200/300 Hz), taping K or L.
• To use RIT or XIT: First, tap G RIT (RX mode) or tap G XIT (TX mode).
This turns on the "+0" on the display. Then adjust the offset using RIT/XIT knob.
• To zero the RIT/XIT offset tap H.
J VFO lock/unlock
When the mode is activated, the inscription appears in the upper line of the display "LOCK",
frequency tuning is not possible. To deactivate the mode, press the button J again.
TRANSMIT SETTINGS
• Voice Modes (SSB, AM, FM)
Choose a mode: Tap D to select A / B, F or G mode.
• MON, Monitor Push N>MON in the bottom line for MON on. Hold PTT to set the voice
monitor level, rotate MAF GAIN knob. High MON settings may result in audio clipping or
distortion. Start with 3 to 5.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
• Adjust mic gain level Push METR and select MIC, rotating MTUNE/MULTI.
While speaking into the mic, adjust F>09 > Gain > MIC (mic gain).
While speaking, adjust mic gain for maximum 10 bars on a scale. Mic gain for the
TX-500 mic is typically 10-20.
• CMR Speech compression: To use speech compression, tap N>CMR in the top line.
Basic Operations
CMR ECHO VOX D METR
Menu Up Menu Down SubMenu
TX Metr MIC
+
12
+
<< TONE MON >>
F
!
TX-500’s receive filter passband. In general, a narrow passband reduces interference
(QRM) and noise (QRN), while a wider passband improves fidelity. In voice modes, CW
and DIG modes long push E selects low-cut (LF) and high-cut (HF) frequency.
Pushing E select number of filter (1-4)RX, (1-2)TX. These functions remove low- or
high-pitched interfering signals. Reducing the width or shifting the passband may attenuate
an interfering signal above or below the desired one.
• PRE/ATT Preamp L and Attenuator D turns on the RF preamp. It should be used
only when signals are very weak. Preamp gain can be set on a per-band basis. D turns
on the 20-dB RF attenuator, which can protect the receiver from strong interfering signals.
• NR Noise reduction removes random background noise (hiss or static). It has a
characteristic “hollow” sound. Higher settings may attenuate weak signals. Tap N>NR
turns on noise reduction, holding N>NR and displays its setting, which can be adjusted
using the knob MTUNE/MULTI. Tap return to exit the setting display. Tap N>NR again
to turn noise reduction off.
• NB Noise blanking C can eliminate repetitive noise such as that from power lines,
appliances, and vehicle ignitions systems. The NB setting is adjusted in the same way as
NR (see above).
• NF in SSB and AM modes, B turns on auto-notch, which locates and suppresses one
or more carriers automatically, Push N>NF to enable or disable the Notch Filter.
• TONE (Transmission tone). The transceiver will transmit a single tone. Pressing “Tone”
N>TONE again puts the transceiver in RX mode. A long press of TONE displays the
selection mode NORMAL (1000 Hz) or DUAL (two tones of 1000 Hz and 2000 Hz).
The transmission power is approximately 50%.

MODE SELECTION
Each mode is described briefly below. Later sections cover each mode in detail. Tap D
one or more times to select USB (LSB), CW (CWR), DIG, AM or FM mode. Long push
selects alternate modes, such as CW reverse (CWR). Also, long push returns normal mode.
• SSB modes: Mode is a narrow-banded voice mode that conserves space in crowded
band segments. It’s the most popular mode overall. LSB (lower sideband) is usually used
on 160, 80, and 40 meters, while other bands use USB (upper sideband).
• CW mode requires very little bandwidth, providing a high signal-to-noise ratio that’s ideal
for low-power use. It’s also a popular mode for DXing and contests.
• CWR mode reversing the received sideband in CW mode. This may reduce the level
of interference (QRM).
• AM mode is characterized by its good fidelity. It is much less power-efficient than SSB.
• AM amateur operation is often found on 160, 80, 40, and 10 meters.
• FM mode is most often used for local communications, and can be found on 10m and up.
• DIG mode typically use a computer connected to the transceiver to send/receive text.
Although SSB modes can also be used for this purpose, the TX-500’s audio-based data
modes (E) optimize settings for data rather than voice.
VFOs A and B
The TX-500 provides two VFOs. Use of VFO B is optional. Each VFO has independent
frequency, mode, and filter settings:
• VFO A normally controls both the receive and transmit frequency. Most contacts occur
between stations tuned to about the same frequency.
• VFO B can serve as a holding register for a second frequency of interest, then swapped
with VFO A as needed (see A<>B).
• + - Tuning rates:
Tapping K or L selects VFO tuning rate LSB, USB, DIG (10Hz, 100Hz,
1kHz, 2.5kHz, 5kHz), CW, CWR (1Hz, 10Hz, 100Hz, 1kHz, 2.5kHz), AM, FM (100Hz, 500Hz,
1kHz, 2.5kHz, 5kHz). SSB stations often align on 0.5 or 1.0kHz boundaries.
• A->B To copy VFO A’s frequency to VFO B: Tap N>A->B. Tapping also copies VFO
A’s mode and filter settings to VFO B as well.
• B->A To copy VFO B’s frequency to VFO A: Tap N>B->A. Tapping also copies VFO
B’s mode and filter settings to VFO A as well.
• A<>B VFO A and B swap: Tap N>A<>B to exchange VFO frequencies, modes, and
all other settings.
RIT
Incremental Tuning, or receive incremental tuning, provides a means of adjusting the
receive frequency without affecting your transmit frequency. This control is sometimes
called a clarifier since it can be used to tune in SSB voice signals. But RIT can also be used
in all modes, in the event that a station calls you slightly off-frequency. RIT and XIT use the
tuning rate (1/10/100/200/300 Hz), taping K or L.
Adjust the level using the F>16 > CMR Level or long push N>CMR. High CMR
settings may result in distortion. Start with 1 to 30.
• ECH Echo: The radio also has a built in reverberator that enables enhancing the transmitted
audio slightly. A very small amount of reverberation can enhance the signal but too much
makes it difficult to copy. Default is “DISABLE”.
Press F>17 ECH > Delay (times) to toggle to delay times , depth, and level.
Before using this feature on the air, you should experiment with the adjustments while
transmitting into a dummy load and having a friend listen to your signal on a nearby
receiver.
• POWER Set the power level (10-100%): tap POWER in the top line and rotate the knob
MTUNE/MULTI. Do not use MIC gain to set power level. Set mic gain to a fixed level as
described above.
• VOX Selects push-to-talk (PTT) or voice-operated (VOX) transmit (G icon on). VOX
hold time is set with F>14 VOX > MIC (time, ms). F>13 VOX L (VOX level)
should be set to trigger at normal speech level, but not in response to incidental noise.
Start with low settings (10-20).
• VOX Transmitter keying method: The VOX switch selects either VOX or PTT keying for
CW mode. Most operators use VOX, allowing the transmitter to be keyed immediately
whenever a hand key or keyer paddle is used. Tap N>VOX_D in top line and rotate
TUNE/MULTI or tap F>14 > VOX > CW (time ms).
• METR You can switch the transmit bar graph from MIC, ALC, PWR, SWR, PWR Num,
SWR Num, by tapping N>METR in the top line. Rotate MTUNE/MULTI knob.
• CW modes (CW,CWR) To swith modes tap D to select C (CW normal). In some
cases an interfering received signal can be eliminated by switching to D (CW reverse)
using long push D.
• CWPITH Set sidetone pitch using CWPITCH. The ideal pitch for most operators falls in
the range of 400-600 Hz. The receiver’s passband will be centered at the pitch you select.
Tap N>CWPITCH and rotate TUNE/MULTI or F>02 > CW Pitch (Hz). Set sidetone
volume using AF GAIN in TX mode, F ON.
RECEIVE SETTINGS
• RF gain is normally left at SSB, AM, FM, DIG(-0) and CW(+3). Reducing RF gain may be
useful in some strong-signal conditions.
• SQL Squelch is used to mute the receiver until a signal appears. The control adjusts the
signal threshold required for squelch to “open,” unmuting the receiver.
• IF DSP Virtual Intermediate Frequency: Specifies the Mode of the Receiver.
ENABLE: This is the operating mode, utilizing all DSP features of the radio. This mode
uses a virtual Intermediate Frequency, which is offset from the operating frequency by a
few kHz. This is similar to ‘homodyne’ technology.
DISABLE: When IF is disabled, the radio operates in simple Direct Digital Conversion
mode, and has soft reduced performances.
• FILTER DSP filter tuning functions (LF/HF) The (LF/HF) control is used to shape the
Basic Operations
13
XIT
XIT or transmit incremental tuning, adjusts the transmit frequency without affecting the receive
frequency. RIT and XIT use the tuning rate (1/10/100/200/300 Hz), taping K or L.
• To use RIT or XIT: First, tap G RIT (RX mode) or tap G XIT (TX mode).
This turns on the "+0" on the display. Then adjust the offset using RIT/XIT knob.
• To zero the RIT/XIT offset tap H.
J VFO lock/unlock
When the mode is activated, the inscription appears in the upper line of the display "LOCK",
frequency tuning is not possible. To deactivate the mode, press the button J again.
TRANSMIT SETTINGS
• Voice Modes (SSB, AM, FM)
Choose a mode: Tap D to select A / B, F or G mode.
• MON, Monitor Push N>MON in the bottom line for MON on. Hold PTT to set the voice
monitor level, rotate MAF GAIN knob. High MON settings may result in audio clipping or
distortion. Start with 3 to 5.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
• Adjust mic gain level Push METR and select MIC, rotating MTUNE/MULTI.
While speaking into the mic, adjust F>09 > Gain > MIC (mic gain).
While speaking, adjust mic gain for maximum 10 bars on a scale. Mic gain for the
TX-500 mic is typically 10-20.
• CMR Speech compression: To use speech compression, tap N>CMR in the top line.
TX-500’s receive filter passband. In general, a narrow passband reduces interference
(QRM) and noise (QRN), while a wider passband improves fidelity. In voice modes, CW
and DIG modes long push E selects low-cut (LF) and high-cut (HF) frequency.
Pushing E select number of filter (1-4)RX, (1-2)TX. These functions remove low- or
high-pitched interfering signals. Reducing the width or shifting the passband may attenuate
an interfering signal above or below the desired one.
• PRE/ATT Preamp L and Attenuator D turns on the RF preamp. It should be used
only when signals are very weak. Preamp gain can be set on a per-band basis. D turns
on the 20-dB RF attenuator, which can protect the receiver from strong interfering signals.
• NR Noise reduction removes random background noise (hiss or static). It has a
characteristic “hollow” sound. Higher settings may attenuate weak signals. Tap N>NR
turns on noise reduction, holding N>NR and displays its setting, which can be adjusted
using the knob MTUNE/MULTI. Tap return to exit the setting display. Tap N>NR again
to turn noise reduction off.
• NB Noise blanking C can eliminate repetitive noise such as that from power lines,
appliances, and vehicle ignitions systems. The NB setting is adjusted in the same way as
NR (see above).
• NF in SSB and AM modes, B turns on auto-notch, which locates and suppresses one
or more carriers automatically, Push N>NF to enable or disable the Notch Filter.
• TONE (Transmission tone). The transceiver will transmit a single tone. Pressing “Tone”
N>TONE again puts the transceiver in RX mode. A long press of TONE displays the
selection mode NORMAL (1000 Hz) or DUAL (two tones of 1000 Hz and 2000 Hz).
The transmission power is approximately 50%.

MODE SELECTION
Each mode is described briefly below. Later sections cover each mode in detail. Tap D
one or more times to select USB (LSB), CW (CWR), DIG, AM or FM mode. Long push
selects alternate modes, such as CW reverse (CWR). Also, long push returns normal mode.
• SSB modes: Mode is a narrow-banded voice mode that conserves space in crowded
band segments. It’s the most popular mode overall. LSB (lower sideband) is usually used
on 160, 80, and 40 meters, while other bands use USB (upper sideband).
• CW mode requires very little bandwidth, providing a high signal-to-noise ratio that’s ideal
for low-power use. It’s also a popular mode for DXing and contests.
• CWR mode reversing the received sideband in CW mode. This may reduce the level
of interference (QRM).
• AM mode is characterized by its good fidelity. It is much less power-efficient than SSB.
• AM amateur operation is often found on 160, 80, 40, and 10 meters.
• FM mode is most often used for local communications, and can be found on 10m and up.
• DIG mode typically use a computer connected to the transceiver to send/receive text.
Although SSB modes can also be used for this purpose, the TX-500’s audio-based data
modes (E) optimize settings for data rather than voice.
VFOs A and B
The TX-500 provides two VFOs. Use of VFO B is optional. Each VFO has independent
frequency, mode, and filter settings:
• VFO A normally controls both the receive and transmit frequency. Most contacts occur
between stations tuned to about the same frequency.
• VFO B can serve as a holding register for a second frequency of interest, then swapped
with VFO A as needed (see A<>B).
• + - Tuning rates:
Tapping K or L selects VFO tuning rate LSB, USB, DIG (10Hz, 100Hz,
1kHz, 2.5kHz, 5kHz), CW, CWR (1Hz, 10Hz, 100Hz, 1kHz, 2.5kHz), AM, FM (100Hz, 500Hz,
1kHz, 2.5kHz, 5kHz). SSB stations often align on 0.5 or 1.0kHz boundaries.
• A->B To copy VFO A’s frequency to VFO B: Tap N>A->B. Tapping also copies VFO
A’s mode and filter settings to VFO B as well.
• B->A To copy VFO B’s frequency to VFO A: Tap N>B->A. Tapping also copies VFO
B’s mode and filter settings to VFO A as well.
• A<>B VFO A and B swap: Tap N>A<>B to exchange VFO frequencies, modes, and
all other settings.
RIT
Incremental Tuning, or receive incremental tuning, provides a means of adjusting the
receive frequency without affecting your transmit frequency. This control is sometimes
called a clarifier since it can be used to tune in SSB voice signals. But RIT can also be used
in all modes, in the event that a station calls you slightly off-frequency. RIT and XIT use the
tuning rate (1/10/100/200/300 Hz), taping K or L.
XIT
XIT or transmit incremental tuning, adjusts the transmit frequency without affecting the receive
frequency. RIT and XIT use the tuning rate (1/10/100/200/300 Hz), taping K or L.
• To use RIT or XIT: First, tap G RIT (RX mode) or tap G XIT (TX mode).
This turns on the "+0" on the display. Then adjust the offset using RIT/XIT knob.
• To zero the RIT/XIT offset tap H.
J VFO lock/unlock
When the mode is activated, the inscription appears in the upper line of the display "LOCK",
frequency tuning is not possible. To deactivate the mode, press the button J again.
TRANSMIT SETTINGS
• Voice Modes (SSB, AM, FM)
Choose a mode: Tap D to select A / B, F or G mode.
• MON, Monitor Push N>MON in the bottom line for MON on. Hold PTT to set the voice
monitor level, rotate MAF GAIN knob. High MON settings may result in audio clipping or
distortion. Start with 3 to 5.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
• Adjust mic gain level Push METR and select MIC, rotating MTUNE/MULTI.
While speaking into the mic, adjust F>09 > Gain > MIC (mic gain).
While speaking, adjust mic gain for maximum 10 bars on a scale. Mic gain for the
TX-500 mic is typically 10-20.
• CMR Speech compression: To use speech compression, tap N>CMR in the top line.
TX-500’s receive filter passband. In general, a narrow passband reduces interference
(QRM) and noise (QRN), while a wider passband improves fidelity. In voice modes, CW
and DIG modes long push E selects low-cut (LF) and high-cut (HF) frequency.
Pushing E select number of filter (1-4)RX, (1-2)TX. These functions remove low- or
high-pitched interfering signals. Reducing the width or shifting the passband may attenuate
an interfering signal above or below the desired one.
• PRE/ATT Preamp L and Attenuator D turns on the RF preamp. It should be used
only when signals are very weak. Preamp gain can be set on a per-band basis. D turns
on the 20-dB RF attenuator, which can protect the receiver from strong interfering signals.
• NR Noise reduction removes random background noise (hiss or static). It has a
characteristic “hollow” sound. Higher settings may attenuate weak signals. Tap N>NR
turns on noise reduction, holding N>NR and displays its setting, which can be adjusted
using the knob MTUNE/MULTI. Tap return to exit the setting display. Tap N>NR again
to turn noise reduction off.
• NB Noise blanking C can eliminate repetitive noise such as that from power lines,
appliances, and vehicle ignitions systems. The NB setting is adjusted in the same way as
NR (see above).
• NF in SSB and AM modes, B turns on auto-notch, which locates and suppresses one
or more carriers automatically, Push N>NF to enable or disable the Notch Filter.
• TONE (Transmission tone). The transceiver will transmit a single tone. Pressing “Tone”
N>TONE again puts the transceiver in RX mode. A long press of TONE displays the
selection mode NORMAL (1000 Hz) or DUAL (two tones of 1000 Hz and 2000 Hz).
The transmission power is approximately 50%.
Basic Operations
14
Menu Up Menu Down NumFil Sel
RX SBB FIL-1 LF 600
E
Menu Up Menu Down NumFil Sel
RX SSB FIL-3 HF 3000
E ×3
Menu Up Menu Down NumFil Sel
RX SSB FIL-3 LF 600
Menu Up Menu Down NumFil Sel
RX SSB FIL-3 HF 2700
EXAMPLE (RX) SSB FILTER ADJUSTMENT: (CHANGE FIL-3)
Set FIL-3: Bandwidth: 2.4 kHz; Passband: 600Hz to 3kHz
1. Long-Push E to enter filter
adjustment menu. The parameter
to be adjusted is shown in the bottom
line of the display.
2. Push N>
NumFil until FIL-3
is selected (in the bottom line).
3. Push N>Sel once to select “HF”.
The display might now look like this:
“RX SSB FIL-3, HF2700”.
(‘2700’ might be any other value).
4. Rotate MTUNE/MULTI
to change 2700 to 3000
(notice the frequencies
are in Hz, not in kHz).
5. Push E to save changes and exit the filter adjustment menu.
6. CHECK YOUR WORK:
Push E a few times until FIL-3 is selected.
It should now display 2.40 k.

MODE SELECTION
Each mode is described briefly below. Later sections cover each mode in detail. Tap D
one or more times to select USB (LSB), CW (CWR), DIG, AM or FM mode. Long push
selects alternate modes, such as CW reverse (CWR). Also, long push returns normal mode.
• SSB modes: Mode is a narrow-banded voice mode that conserves space in crowded
band segments. It’s the most popular mode overall. LSB (lower sideband) is usually used
on 160, 80, and 40 meters, while other bands use USB (upper sideband).
• CW mode requires very little bandwidth, providing a high signal-to-noise ratio that’s ideal
for low-power use. It’s also a popular mode for DXing and contests.
• CWR mode reversing the received sideband in CW mode. This may reduce the level
of interference (QRM).
• AM mode is characterized by its good fidelity. It is much less power-efficient than SSB.
• AM amateur operation is often found on 160, 80, 40, and 10 meters.
• FM mode is most often used for local communications, and can be found on 10m and up.
• DIG mode typically use a computer connected to the transceiver to send/receive text.
Although SSB modes can also be used for this purpose, the TX-500’s audio-based data
modes (E) optimize settings for data rather than voice.
VFOs A and B
The TX-500 provides two VFOs. Use of VFO B is optional. Each VFO has independent
frequency, mode, and filter settings:
• VFO A normally controls both the receive and transmit frequency. Most contacts occur
between stations tuned to about the same frequency.
• VFO B can serve as a holding register for a second frequency of interest, then swapped
with VFO A as needed (see A<>B).
• + - Tuning rates:
Tapping K or L selects VFO tuning rate LSB, USB, DIG (10Hz, 100Hz,
1kHz, 2.5kHz, 5kHz), CW, CWR (1Hz, 10Hz, 100Hz, 1kHz, 2.5kHz), AM, FM (100Hz, 500Hz,
1kHz, 2.5kHz, 5kHz). SSB stations often align on 0.5 or 1.0kHz boundaries.
• A->B To copy VFO A’s frequency to VFO B: Tap N>A->B. Tapping also copies VFO
A’s mode and filter settings to VFO B as well.
• B->A To copy VFO B’s frequency to VFO A: Tap N>B->A. Tapping also copies VFO
B’s mode and filter settings to VFO A as well.
• A<>B VFO A and B swap: Tap N>A<>B to exchange VFO frequencies, modes, and
all other settings.
RIT
Incremental Tuning, or receive incremental tuning, provides a means of adjusting the
receive frequency without affecting your transmit frequency. This control is sometimes
called a clarifier since it can be used to tune in SSB voice signals. But RIT can also be used
in all modes, in the event that a station calls you slightly off-frequency. RIT and XIT use the
tuning rate (1/10/100/200/300 Hz), taping K or L.
XIT
XIT or transmit incremental tuning, adjusts the transmit frequency without affecting the receive
frequency. RIT and XIT use the tuning rate (1/10/100/200/300 Hz), taping K or L.
• To use RIT or XIT: First, tap G RIT (RX mode) or tap G XIT (TX mode).
This turns on the "+0" on the display. Then adjust the offset using RIT/XIT knob.
• To zero the RIT/XIT offset tap H.
J VFO lock/unlock
When the mode is activated, the inscription appears in the upper line of the display "LOCK",
frequency tuning is not possible. To deactivate the mode, press the button J again.
TRANSMIT SETTINGS
• Voice Modes (SSB, AM, FM)
Choose a mode: Tap D to select A / B, F or G mode.
• MON, Monitor Push N>MON in the bottom line for MON on. Hold PTT to set the voice
monitor level, rotate MAF GAIN knob. High MON settings may result in audio clipping or
distortion. Start with 3 to 5.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
• Adjust mic gain level Push METR and select MIC, rotating MTUNE/MULTI.
While speaking into the mic, adjust F>09 > Gain > MIC (mic gain).
While speaking, adjust mic gain for maximum 10 bars on a scale. Mic gain for the
TX-500 mic is typically 10-20.
• CMR Speech compression: To use speech compression, tap N>CMR in the top line.
TX-500’s receive filter passband. In general, a narrow passband reduces interference
(QRM) and noise (QRN), while a wider passband improves fidelity. In voice modes, CW
and DIG modes long push E selects low-cut (LF) and high-cut (HF) frequency.
Pushing E select number of filter (1-4)RX, (1-2)TX. These functions remove low- or
high-pitched interfering signals. Reducing the width or shifting the passband may attenuate
an interfering signal above or below the desired one.
• PRE/ATT Preamp L and Attenuator D turns on the RF preamp. It should be used
only when signals are very weak. Preamp gain can be set on a per-band basis. D turns
on the 20-dB RF attenuator, which can protect the receiver from strong interfering signals.
• NR Noise reduction removes random background noise (hiss or static). It has a
characteristic “hollow” sound. Higher settings may attenuate weak signals. Tap N>NR
turns on noise reduction, holding N>NR and displays its setting, which can be adjusted
using the knob MTUNE/MULTI. Tap return to exit the setting display. Tap N>NR again
to turn noise reduction off.
• NB Noise blanking C can eliminate repetitive noise such as that from power lines,
appliances, and vehicle ignitions systems. The NB setting is adjusted in the same way as
NR (see above).
• NF in SSB and AM modes, B turns on auto-notch, which locates and suppresses one
or more carriers automatically, Push N>NF to enable or disable the Notch Filter.
• TONE (Transmission tone). The transceiver will transmit a single tone. Pressing “Tone”
N>TONE again puts the transceiver in RX mode. A long press of TONE displays the
selection mode NORMAL (1000 Hz) or DUAL (two tones of 1000 Hz and 2000 Hz).
The transmission power is approximately 50%.
FREQUENCY MEMORIES
V/M (VFO/Memories), The TX-500 has 100 general-purpose frequency memories
(00-99), Each memory stores VFO frequency, modes, and other settings.
To store a general-purpose memory (00-99): Push I, then locate the desired memory
by rotating the MTUNE/MULTI knob. The VFO frequencies presently stored in each memory
will be shown as you scroll through them. When you reach the desired memory number,
push N>VFO ->Mem to finish, or tap I to cancel.
To recall a general-purpose memory: Push I, then select memory 00-99 using
MTUNE/MULTI. Tap I to exit.
To erase a general-purpose memory: While scrolling through memories to save
or recall, push H.
DIG MODES (Audio Data Modes)
Many audio-generated data transmissions can be heard on the bands, using PSK31, RTTY,
JT65 and other modes. A computer,sound card, and appropriate software are normally
used. DIG mode is provided for this purpose.
Unlike SSB modes, DIG disables MIC and enables use AUDIO cable (connector REM/DATA).
Also DIG mode has individual audio level settings. Upper sideband is the default.
RX / TX switching can be via CAT cable (see Remote Control). You can also use the VOX
function (see Basic Operations).
DIG mode settings: tap F>13 VOX L > DIG > (vox level)
F>14 VOX > DIG > (time, ms)
SPLIT AND XIT
Sometimes you’ll hear a DX station being called by many other stations. To ensure that he
has a clear transmit channel, the DX station may say “UP” or “DOWN” to indicate that he’s
listening above or below his transmit frequency.
Advanced Operating
Mem->VFO VFO->Mem
80 ---.---.---
15
09 > Gain > DIG (level settings)
AUDIO CABLE

To use split, first tap N>A->B to set VFO B to the same mode, frequency, and filter
settings as VFO A. Then tune VFO B up about 2 kHz. Finally, tap N>SPL (the J icon
will turn on). VFO B is now controlling your transmit frequency.
This is where the A<>B switch comes in: it reverses the A and B VFOs so that you’re
temporarily receiving on your transmit frequency. During this time, tune VFO A around a bit to
see if you can identify who is presently working the DX station, then position yourself just above
this frequency. With any luck your next transmission will occur right where he’s listening.
XIT as an alternative to split: If you’re trying to preserve VFO B as a holding register tuned
someplace else in the band, you may want to use XIT rather than split in the above situation.
In this example, you’d turn on XIT and rotate the offset control to about +2.00 kHz. You’ll
then be transmitting 2 kHz above VFO A. To do the equivalent of A<>B, you can briefly turn
RIT on as well. Turn off RIT to listen to the DX station.
RECEIVE AUDIO EQUALIZATION RX EQ
The TX-500 provides 3 bands of receive audio equalization via the F>18 EQL > RX
menu entry. EQ RX can compensate for physical acoustics (of the room, headphones,
internal speaker, external speaker), tailoring the audio to your personal preference.
TRANSMIT AUDIO EQUALIZATION TX EQ
Most microphones, including the TX-500, will provide good audio quality with little or
no EQ TX. High settings can cause distortion.
If required, transmit audio equalization can compensate for microphone and voice
variations.
F>18 EQL > TX works exactly the same as EQ RX, and can be used during transmit.
EQ TX is not applicable to CW. While adjusting EQ TX, monitor your voice using
headphones (use N>MON to set the level), or listen to your transmitted signal on another
receiver. If you hear distortion, reduce all EQ TX bands. You may also have excessive mic
gain or compression.
Do not use the hand speaker-mic at the same time as monitor F function
in voice modes: A B F G
CROSSMODE OPERATION,
(CW-in-SSB) Cross-mode operation is possible in some cases. For example, you could set
up VFO A for SSB receive, and VFO B for CW transmit, then enter N>SPL.
!
!
Advanced Operations
16
SPL

Accessories
HAND SPEAKERMIC
Hand speaker-mic, The hand speaker-mic was designed specifically for the TX-500.
It includes a high-quality mic element, speaker, rugged plug, PTT switch and external
speaker plug.
POWER CABLE
The power cable for external power source DC 9-15V with 3A FUSE.
MICROPHONE AND HEADPHONE ADAPTER WITH PTT
With this adapter, you can connect a regular headset or microphone and headphones.
The adapter also has a PTT button to control TX/RX.
17
AUDIO CABLE
You can use digital modes (Audio Data Modes) with this cable. The cable connects to the
PC, the connectors are used — a microphone PC (3.5 mm jack) and headphones PC
(3.5 mm jack).
GND
V+
FUSE
MIC (3.5 mm socket )
PHONE (3.5 mm socket )
PTT (switch button)

CATUSB CABLE
The TX-500 can interface to most common types of computers via included CAT cable.
It has an PL2303 chipset and uses driver, that can be downloaded from www.lab599.com
CW ADAPTER
With this adapter you can connect a CW key through a 3.5mm jack connector.
Key reverse can be enabled in the menu.
Accessories
18
3.5 mm jack
(CW key)
USB
2.0

Firmware Upgrades
New features and improvements are available to all TX-500 owners via firmware upgrades.
Please visit the Discovery TX-500 software page (www.lab599.com) to obtain our free
firmware download application, TX-500 Utility. This program runs on OS Windows.
CHECKING YOUR FIRMWARE REVISION
After switching on, the software version number will appear for a while.
PROGRAM VERSION UPDATE
Connect the TX-500 to a computer and run TX-500 Utility, which will load new firmware. In
the TX-500 utility, select the downloaded new firmware file and select the com port to which
the TX-500 transceiver is connected. While holding the third top function key, turn A
the TX-500. The screen will display "The loader is waiting…". Сlick "update" on the utility,
the software update process you will see on the computer screen and TX-500 screen. Do
not turn off the computer and the transceiver until the download is complete. After the
software download is complete, turn off the transceiver and turn it on again. Check the new
version when you turn it on.
Firmware ver 1.00.00
A
19
The loader is waiting...
CAT-USB cable
TX-500 Discovery firmware update

Remote Control
COMPUTER CONTROL AND LOGGING
With appropriate software, any computer with an RS232 or USB port can be used to control
the TX-500. Use CAT-USB cable (see page “Accesories”). Third-party logging and
contesting software is available for various computers and operating systems. Select
KENWOOD TS-2000 as the target radio.
Its САТ Interface is fully compatible with the KENWOOD TS-2000’s CAT Command set.
COM PORT SETTINGS:
● RIG Type: TS-2000
● Baud rate: 9600
● Data bits : 8
● Parity: NONE
● Stop bits: 1
20
CAT-USB cable
USB
2.0