HYT TR-800 User manual

Contents
Revision History...................................................................................................................1
General ................................................................................................................................1
Repeater Overview ..............................................................................................................3
Software Specification..........................................................................................................5
Circuit Description..............................................................................................................10
MPU Pins...........................................................................................................................16
Programming Guide...........................................................................................................18
Part List 1(Logic Board Unit)..............................................................................................32
Parts List 1 (Power Management Board Unit)....................................................................39
Adjustment Description......................................................................................................42
Duplexer Instructions .........................................................................................................49
Battery Revert....................................................................................................................52
Troubleshooting Flow Chart...............................................................................................56
Disassembly and Installation .............................................................................................59
Exploded View ...................................................................................................................64
Parts List 2.........................................................................................................................65
Wiring Diagram ..................................................................................................................67
Packing ..............................................................................................................................68
Logic Board Top View ........................................................................... 错误！未定义书签。
Logic Board Bottom View...................................................................................................70
Power Management Board Top View.................................................................................71
Power Management Board Bottom View ...........................................................................72
Logic Board Schematic ......................................................................................................73
Power Management Board Schematic ..............................................................................74
Specifications.....................................................................................................................75

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Revision History
P/N Release Date Revision
8130080000000 2007-2-3 Initial Release
General
Manual Scope
This manual is intended for use by experienced technicians familiar with similar types of
communication equipment. It contains all service information required for the equipment and is
current as of the publication date.
Safety and General Information
The following general safety precautions as would normally apply, should be observed during all
phases of operation, service and repair of this equipment.
5This equipment should be serviced by qualified technicians only.
5Do not modify the repeater for any reason.
5To avoid electromagnetic interference and/or compatibility conflicts, do not operate your
repeater when you are near 380V AC mains or above.
5For vehicles with an air bag, do not place a repeater in the area over an air bag or in the air bag
deployment area. Air bags inflate with great force. If a repeater is placed in the air bag
deployment area and the air bag inflates, the repeater may be propelled with great force and
cause serious injury to occupants of the vehicle.
5Turn off your repeater prior to entering any area with a potentially explosive atmosphere.
5To avoid possible interference with blasting operations, turn off your repeater when you are
near electrical blasting caps, in a blasting area, or in areas posted: “Turn off two-way radio.”
Obey all signs and instructions.
5Do not charge your back-up battery in a potentially explosive atmosphere
5Do not expose the repeater to direct sunlight over a long time, nor place it close to heating
source.
5Do not place the repeater in excessively dusty, humid areas, nor on unstable surfaces
5Connect to the lightning arrester prior to the antenna which is installed outdoors, and the
chassis or equipment housing must be connected to an absolute earth ground, to minimize any
possible shock hazard from lightning strike.
5Please make sure no stress on the antenna joint during transportation or installation.

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Caution:
This equipment generates, uses, and can radiate radio frequency energy and, if not installed or
used in accordance with the owner’s manuals, can cause interference to radio communications.
HYT endeavors to achieve the accuracy and completeness of this manual, but no warranty of
accuracy or reliability is given. All the above specifications and design are subject to change without
notice due to continuous development.
No part of this manual may be copied, reproduced, translated, stored in a retrieval system,
distributed, or transmitted in any form or by any means, electronic or mechanical, for any purpose
without the express written permission of HYT.

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Repeater Overview
1. Speaker ①
2. LED Indicators
Red LED ② lights while the main radio is transmitting, and flashes while receiving.
Green LED ③lights while the slave radio is transmitting, and flashes while receiving.
Dark red LED ④lights while DC power supplies and the AC power fails.
Orange LED ⑤lights while the repeater in setup state and goes out while in knockdown state.
Blue LED ⑧lights while the RPT/OPT is active, and goes out while inactive.
3. Repeater Setup/Knockdown ⑥
The Setup button is a momentary contact switch that enables or disables the main radio of TR-800.
4. LCD Display ⑦
Display current channel number, frequency, power level, receive status, etc.
5. Power Switch/Volume Control Knob ⑨
The Power Switch is located in the center of the knob, short press of which turns repeater on,
and long press for 1 second turns repeater off. Rotate the Volume Control knob clockwise or
counter-clockwise to adjust the volume for a desired level.
6. Microphone Hook ⑩
7. RPT Button, OPT Button
Press the RPT button to enable uni-directional repeater, and press the OPT button to
enable bi-directional repeater.
8. Scan Button, Monitor Button
Press the Scan button to initiate repeater scan, which can be activated only when in

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uni-directional mode (forward directional, i.e., RPT is active while OPT is inactive).
Short press the Monitor button to display channel frequency by turns of slave radio Rx
frequency, slave radio Tx frequency, main radio Rx frequency, main radio Tx frequency; long press it
to monitor the activities on the current channel. The main radio processes monitoring while OPT is
active, the slave radio processes monitoring while OPT is inactive.
9. “Up” Button and “Down” Button
Press the “Up” or “Down” button to select a desired channel.
10. RJ45 Connector
Plug the desktop microphone or palm microphone into this port to input audio, or plug the
programming cable into this port to program both radios.
11. Antenna Connector
The N connector is for connecting with the main radio’s antenna, while the BNC connector
is for the slave radio’s antenna.
When using duplexer, choose the correct adaptor on the back of TR-800 according to your
antenna connector type.
12. Fan
The fan is temperature-controlled with continuously variable speed as temperature changes.
13. AC Power Inlet (with Switch )
14. Accessory Connector (DB15/F)
Used for external control equipment or link equipment.
15. Grounding Lug
For lightning protection, this terminal must be connected to an absolute earth ground via a thick
copper wire, or use lightning arrester if necessary.
16. DC Power Inlet
The power supply would auto-revert to backup battery once the AC mains fails. This DC port also
provides floating charge function with approximate 400mA current.
17. DC Fuse
The 15A/32Vdc fuse protects against battery polarity reversal.

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Software Specification
Basic Operation
Short press the Power Switch to turn on the repeater; rotate the Volume Control knob clockwise to
adjust the volume for a comfortable listening level. Press the “Up” or “Down” button to select a desired
channel, then the repeater operates as you set.
To achieve the basic repeater functions, the radio must be in the repeater setup, and operates in the
uni-directional or bi-directional repeater mode.
Repeater Hang Time
When the repeater stops receiving upon signal off, the transmitter remains transmitting for a
programmed time period, which reduces delay on conversation due to the setup of repeater link. The
Repeater Hang Time can be activated when in forward directional repeater only.
Frequency Display
Short press the Monitor button displays the frequency in the turn of: slave radio Rx frequency, slave
radio Tx frequency, main radio Rx frequency, main radio Tx frequency.
Monitor
If the monitor function is set by your dealer, long press the programmed Monitor key while in receive
mode, to hear activities on current channel. The monitor function is disabled while in the bi-directional
repeater mode. Two operation modes listed below are provided for you to choose via the programming
software.
A. Carrier Squelch-Momentary
Hold down the Monitor key to open CTCSS/CDCSS signalling squelch. Release it to close the
signalling squelch.
B. Squelch Off-Momentary
Hold down the Monitor key to open carrier squelch; release it to close the carrier squelch.
Scan
The scan function can be activated while in the forward directional repeater mode only. Press the Scan
button to initiate repeater scan (if scan parameter is applicable). The Scan Interval Time and Dropout
Delay Time are configurable via the programming software.
CTCSS/CDCSS
Set up talkgroups/users with unique CTCSS/CDCSS to prevent unwanted conversations on the same
frequency. If CTCSS/CDCSS is set on current channel, a CTCSS/CDCSS match will be required on an
incoming call. If not set, the radio unmutes to all calls within the communication range on current channel.
Your dealer may preset CTCSS/CDCSS on certain channels.
Note: This feature does not mean that your conversation will not be heard by others.

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Time-out Timer (TOT)
The feature allows for efficient use of channels by limiting the maximum time of each transmission. It
protects the radio from damage caused by long time transmission. Once a continuous transmission
exceeds the preset time (15～1200s programmable), the transmission will be automatically terminated
and alert tone will be heard. The alert tone ceases upon the release of the PTT.
Selectable Squelch Level (SQL)
Squelch levels from 0 to 9 are selectable via the programming software.
Voice Compander/Scrambler
The voice compander/scrambler feature may be enabled/disabled via the programming software. The
emphasis/de-emphasis function needs to be disabled while the scrambler feature is enabled, and
enabled while the scrambler feature is disabled.
High/Medium/Low Power Programmable
High/Medium/Low power is selectable via the programming software.
Programmable Channel Spacing
A wide/narrow channel spacing is selectable via the programming software.
Repeater Modes
Knockdown Mode
Setup Mode
Base Station
Forward Directional
Repeater
Reverse Directional
Repeater
Bi-directional Repeater
PC Programming Mode

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Modes Description
Mode Description
Knockdown Press the SETUP button while the repeater is power on. The repeater
enters knockdown mode once the orange LED goes out.
Setup
Base Station
Press RPT and OPT buttons when the SETUP orange LED is on. The
radio enters base station mode once both the RPT and OPT blue
LEDs go out.
Forward
Directional
Repeater
Press RPT and OPT buttons when SETUP orange LED is on. The
repeater enters forward directional mode once the RPT blue LED is
on while the OPT blue LED goes out.
Reverse
Directional
Repeater
Press RPT and OPT buttons when the SETUP orange LED is on. The
repeater enters reverse directional mode once the RPT blue LED
goes out while the OPT blue LED is on.
Bi-directional
Repeater
Press RPT and OPT buttons when the SETUP orange LED is on. The
repeater enters bi-directional repeater mode once both the RPT and
OPT blue LEDs are on.
PC Programming The repeater enters PC programming mode once command is
received from PC, while the SETUP orange LED is on.
Repeater Setup/Knockdown
Press the Setup button located on the front panel to toggle between repeater setup and knockdown,
with LED indications. While in setup state, both radios turn on at power up; in knockdown state, only
receive radio turns on at power up. There are three repeater types: base station, uni-directional and
bi-directional in the repeater setup state. The repeater is initialized to base station mode when it toggles
from knockdown to setup state. But in the knockdown state, the repeater works only as a receiver.
In base station mode, the repeater function is disabled, with the slave radio as a receiver and the main
radio as a transmitter. In bi-directional repeater mode, the front panel PTT is disabled.
The repeater setup/knockdown status will be recorded after the repeater power failure. (E.g. If the
repeater operates in forward directional mode, it will still work in such mode after the power recovers)
PC Programming Mode
Connect the PC with the repeater via programming cable. Data can be transmitted from PC to the
repeater. Repeater LCD displays “PROGRAMMING” while reading/writing data from/into the radio, with
red LED flashes indicating programming the main radio, and then green LED flashes indicating
programming the slave radio. The repeater needs to reset for proper operation after programming
is finished.

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LCD Display
LCD Icon Description
Indicator Description
1. Displays zone/channel number
2. Displays zone/channel name up to 12 alphanumeric characters
(preprogrammed by your dealer)
3. Displays channel frequency
4. Displays preprogrammed function
1. Displays zone/channel number
2. Displays transmit power level (the 4th digit: H, M, L)
3. Displays preprogrammed function
Appears when the current channel is already in use
Appears when the Monitor key is pressed to disable CTCSS/CDCSS, DTMF,
2-Tone/5-Tone decoding.
Appears when the repeater is unmuted upon the Monitor key is pressed.
A Indicates the future development feature.
SCAN Appears while repeater scanning.
CALL Appears when transmitting a selective call.
Appears when a message is received.
Reserved
Reserved

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LED Indicator
LEDs indicate real-time radio status shown as the following table:
LED Description Indicates:
Tx Red
1. Lights while the main radio is transmitting.
2. Flashes while the main radio is receiving.
3. Flashes while the main radio is monitoring channel activities.
4. Flashes while programming the main radio.
Rx Green
1. Lights while the slave radio is transmitting.
2. Flashes while the slave radio is receiving.
3. Flashes while the slave radio is monitoring channel activities.
4. Flashes while programming the slave radio.
RPT Blue, ultra bright 1. Lights while the RPT is active.
2. Goes out while the RPT is inactive.
OPT Blue, ultra bright 1. Lights while the OPT is active.
2. Goes out while the OPT is inactive.
SETUP Orange 1. Lights while in the Setup state.
2. Goes out while in the Knockdown state.
BAT Dark red 1. Lights while the backup battery supplies power.
2. Goes out while the AC mains supplies power.

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Circuit Description
Repeater Communication Interface & Display Unit
Theory of Operation
Setup/Knockdown (U0107D, Q0101, Q0103, Q0106, Q0107 and Q0108):
The Setup/Knockdown state at power-up can be configured via HR-800 programming software. The
electronic switch, Q0106 and Q0108, causes the Setup/Knockdown action by applying or removing
voltage at the ignition control, pin15, of “J0102-Main”. After power-up, the Setup or Knockdown state
may be changed remotely with a signal from pin10 of “J4-Slave” or locally through the front panel
SETUP. S0102 is a momentary contact switch that is debounced by the Q0103/Q0107 latch circuit. The
orange “SETUP” LED, CR0102, illuminates to indicate the Setup state.
As the Setup/Knockdown circuit goes from the Knockdown to the Set-up state, Q1 is momentarily turned
on by Q0108 via the C0101/R0103 timing circuit. The push to talk (PTT) input of the slave radio, pin8 of
“J4-Slave” is pulled low by Q0101 and keys the transmitter. The “Rx” LED, CR0105, will briefly flash
during the moment that Q0101 is conducting.
Forward Audio Routing (U0103A, U0104A, U0104D and U0105A):
The audio gate, U0104D, quarter of an analog switch BU4066B, enables and disables the audio from
front panel MIC audio input. U0104D is turned on with an active dc level high driven at the output of
NAND gate U0103A-3 by the front panel PTT input. The slave radio audio output from pin5 of
“J0104-Slave” is routed to a potentiometer, RV0101. The output of RV0101 is applied to another switch
U0104A. U0104A is enabled once a valid signal is received and will route the audio to transmitter. The
external audio input, ACC Relay audio, is routed to another potentiometer, RV0103. The output of
RV0103 is applied to the second half of U0105, an operational amplifier NJM2904. U0105A, R1106 and
R0118 make a buffer amplifier for the link audio. All the “forward” audio will mix together and route
through S0101-5 to the main microphone transmitter audio, pin2 of “J0106-Main”.
Reverse Audio Routing (U0104B and U0104C):
Part of front panel MIC audio is routed to the input of U0104B, quarter of the analog switch BU4066B.
The output of U0104B is also controlled with an active low input by the front panel PTT. Audio present on
pin5 of “J0102-Main” is routed through S0102-7 to a potentiometer, RV0102, which is used to adjust the
audio level for proper deviation. As with the forward direction, the audio output of RV0102 is applied to
an analog switch U0106A. This switch turns on only if a valid signal is detected and pin6 of U0104 goes
high.
Forward and Reverse Key-up (Q0102, U0103, U0107, Q0105, Q0111 and Q0116):
When a valid input signal is present at the slave radio, pin6 of “J0104-Slave” will be pulled low and turn
off Q0105 through two NAND gates, U0107B and U0107C, along with RPT enable trigger. A dc level
high output from Q0105 will be applied to pin37 of U0110 and keys the main radio PTT through output
from pin12. The red “Tx” LED, CR0106, illuminates.

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When the reverse key-up function is enabled, as in the bi-directional repeater configuration, S0101-8
must be on. Q0116 is a dc amplifier (buffer) for the Rx Carrier signal from pin6 of “J0102-Main”. An active
low state at the input of the NAND gate U0107A, one quarter of a MC14011B, will be conversed to a high
state to drive the buffer for the Rx Carrier signal. The active low level of Rx Carrier signal, along with the
OPT enable signal, cause a series of NAND gates, U0103D, U0103C and U0103B to generate a high dc
level to turn on Q0102. The output of Q0102 is pulled low for pin8 of “J0104-Slave” and keys the
transmitter of slave radio. The green “Rx” LED, CR0105, illuminates.
Q0111 is used to prevent the simultaneous active state on PTT and Rx Carrier signal of “J0102-Main”,
which possibly causes unwanted tie condition of keying of both radios.
Accessory D-SUB 15pin receptacle (“J0103-Acc”)
The accessory D-Sub, “J0103-ACC”, is connected to “J0102-Main” and “J0104-Slave” to supply Rx
audio and PTT for linked radios (repeaters) or external controllers. Receive audio and PTT activation
from the linked facilities are applied to the repeater for transmission.
Display Unit (U0110, PB01-PB06, K02, Q0113 and Q0118)
All the functional triggers of enable and disable come from keypad PB01 to PB06. K02 is an encoder
switch for front speaker audio output adjustment. A high output from pin37 of CPU U0110 will turn Q0119
on, driving the base of Q0118 to go low. The backlight LED for the keypad, CR0107, CR0108,
CR0111-CR0114 illuminate. Another backlight driver, Q0113, is controlled by Q0114 through the output
from pin17 of U0110.
Peripheral Circuitry (U0108, U0109, KR00 and KR03)
Operating power bus for all the electronics originates from the switch power 13.8Vdc output, pin9 of
“J0107-Slave”, and goes through U0109 and U0108 to obtain the reference voltages of 9Vdc and 5Vdc.
KR00 is a DPDT relay driven by transistor Q0123. The output from pin25 of U0110 will turn on/off Q0123,
which activates relay KR00 to toggle the front speaker audio routes from slave radio or from main radio.
KR03 is another SPDT relay for audio test requirement. A dc level high output from pin26 of U0110 will
turn on Q0124 and keys relay KR03. The receive audio to the speaker is blocked and routes only to pin8
of the front RJ45 connector J0109.
IMPORTANT NOTE
Using CTCSS/CDCSS tones may have a lower probability
to open squelch than carrier operation. But the CTCSS
codes near 100Hz and 150Hz have a high false opening
probability due to 50Hz AC power harmonics. Countries
having 60Hz AC power may have false opening on 120Hz
and 180Hz. CTCSS code 254.1Hz has a high probability
of squelch tails.

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Figure Block DiagraⅠm

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Power Management
Theory of Operation
Battery Revert Circuit:
A voltage reference network consisting of CR0212, CR0213, R0268, and VR0209 provides a stable
voltage reference of 7.5Vdc. This reference voltage, at the anode of VR0209, is applied to the negative
input of the Over Voltage Detector U0206B-6, to the positive input of AC Fail Detector U0206A-3, and to
the positive input of the Low Battery Detector U0205B-5. Operating positive supply voltage for the
integrated circuits is obtained from the TR-800 power supply through CR0212 when the TR-800 is
operating on AC mains input power. The supply voltage is obtained through CR02013 when the station is
operating on the battery.
During normal operation under AC mains power, the negative input of the AC Fail Detector U0206A-2 is
more positive than the positive input U0206A-3. The output of U0206A-1 is low and Q0224, the driver for
relay KR01, and Q0216, the “BATTERY ON” driver, are turned off. When AC mains power is lost, the
voltage at U0206A-2 becomes lower than the reference voltage applied to U0206A-3. The output at
U0206A-1 then goes high and turns on both Q0224, which activates relay KR01 and transistor Q0216,
which provides a low at the output point “BATTERY ON”. The “BAT ON” LED, CR0219, illuminates to
indicate the DC power supply is operating.
If the battery voltage falls below approximately 10.2Vdc, the output at U0205B-7 will go high. This action
turns on Q0218 that shunts the base drive to Q0224 through CR0217 and turns off the relay. Q0218 also
provides a low through CR0218 at output point “BAT LOW”. This auxiliary output might be used to key a
portable radio to signal the repeater operator that the battery has exceeded the low voltage limit for the
radios. Hysteresis is provided by the feedback network consisting of CR0221, R0289 and R0288 from
the output of U0205B-7 to the positive input U0205B-5. The reference voltage at the positive input of
U0205B-5 is increased such that the battery voltage must rise above 12Vdc before relay KR01 will
reactivate and place the TR-800 back on battery power. This latching action is used to prevent
excessively deep discharging of the battery.
The repeater will remain turned off until either AC mains return or a charged battery is substituted for the
discharged battery. The circuit consisting of C0233, R0285, R0286, CR0220, R0287 and Q0217 resets
U0205B-7 to low upon the return of the AC mains power.
Capacitor C0234 at the negative input of U0205B-6 smoothes the variation in the battery voltage
between the transmit radio keyed and unkeyed conditions. Capacitor C0230 at U0206A-2 input, in
conjunction with C0234 at U0205B-6, ensures proper resetting of U0205B with the return of the AC
mains power.
The Over Voltage Detector consisting of U0206B and resistors R0274, R0275 and R0271 monitors the
DC output of the TR-800 power supply. If the voltage exceeds 16.4Vdc, the output of U0206B-7 goes
high and turns on relay driver Q0224. The station switches to battery power although there is no
indication at the “BAT ON” output point.
Zener diodes VR0210, VR0211, VR0212, VR0215 and VR0216 protect the electronics from damage by
accidental static discharge.

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Fuse F0203-15A and diode and CR0215 provide protection from reverse polarity if the battery is
inadvertently connected “backward”.
Variable speed, Temperature controlled Fan Circuit:
The TL431AILP is a three-terminal programmable shunt regulator diode. This monolithic IC voltage
reference operates as a low temperature coefficient zener that is programmed from 6Vdc to 12Vdc with
a resistor network consisting of R0296, R0297 and an NTC thermistor Rth0201. Q0219 operates as a
fast power switch between “ON” and “OFF” (similar to PWM mode) controlled by the output at cathode of
TL431AILP. The rotating speed of brushless fan is voltage controlled at collector of Q0219. The higher
temperature, the higher power supply to the fan, hence the faster it rotates.
Battery charging (Float Maintenance) Circuit:
The battery charging circuit is intended for use with sealed lead acid gel cell batteries. The charging
current, limited to approximately 400mA, is used to maintain a “float” charging condition on the battery.
After operating the TR-800 station on the battery for long periods of time, or if the battery reaches the low
battery limit of the revert circuit, the battery must be recharged with an external high-current charger.
Recharging with the internal trickle charger requires an extended period of time.
The trickle charging voltage is derived from AC mains. Resistors R0269 limit the charging current to
approximately 400mA to a partially discharged battery (terminal voltage of 12Vdc). Once the battery is
fully charged, the current will decrease to 10 to 25mA to float the battery at a terminal voltage of 13.6Vdc.
NOTE
This trickle charger is intended to maintain the
battery for long periods of time between power
failures and is not intended for charging a fully
discharged battery. If the battery is completely
discharged, it must be removed and charged via a
battery charger with higher current capability.
Figure Block DiagramⅡ

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Glossary
Bi-directional Repeater:
A repeater configuration in which the main and slave radios perform both receive and transmit functions.
The audio and Rx Carrier signals from the receiver of the slave radio are routed to the transmitter of the
main radio. Unlike the unidirectional case, though, the audio and Rx Carrier signals of the receiver of the
main radio are also routed to the transmitter of the slave radio.
Cross band repeater:
A repeater in which the slave radio operates in a different frequency band than the main radio. Example:
the slave radio operates on 162.075MHz in the high band VHF and the main radio operates on
452.025MHz in the 450-470MHz UHF band. Cross-band repeaters may be either unidirectional or
bi-directional.
Main Radio:
The radio that performs the transmitting functions in the TR800 repeater station in the general
unidirectional application.
Relay Delay Time:
The time duration the repeater remains in transmit mode after an active or valid signal is no longer
detected.
Repeater Knockdown:
To deactivate a repeater or to remove it from service. Only the slave radio turns on at power up.
Repeater Setup:
To activate a repeater or to place it into service. Both radios turn on at power-up (repeater functional).
Single band repeater:
A repeater in which both the slave radio operates in a same frequency band. Example: receive at
455.075MHz and transmit at 460.075MHz in the 450-470MHz UHF band.
Slave Radio:
The radio that performs the receiving functions in the TR800 repeater station in the general
unidirectional application.
Unidirectional Repeater:
A repeater configuration in which the slave radio receives signals only from the field radios and the main
radio transmits signals only to the field radios.

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MPU Pins
Repeater front panel
(MPU Model: uPD780114, CRYSTAL: 9.8304MHz）
Pin No. Pin Name I/O Description
1 AVref I Connect VDD
2 AVss I To GND
3 IC(VPP) I To GND (programming pin) short-circuit resistor added
4 VDD I +5V
5 Vss I GND
6 X1 I Clock Input
7 X2 O Clock output
8 RESET I Knockdown
9 XT1 I NC Connect VDD
10 XT2 I NC Open
11 SHIFT O Clock Frequency Shift Active: H
12 PTT/O O Main radio PTT signal output control Active: L
13 RxD2 I Analog serial data input (slave MPU communication)
14 TxD2 O Analog serial data output (slave MPU communication)
15 RSW0(DN) I Encoder knob [DOWN] button input High/low level
16 RSW1(UP) I Encoder knob [UP] button input Rising Edge / Falling Edge
active
17 LCDBL/LED0 O LCD backlight control/LED0 Active: H
18 LCDCS/LED1 O LCD chip selection output/LED1
19 LCDSOD/LED2 I/O LCD data reading/LED2 (LCD/LED I/O)
20 LCDDAT/LED3 O LCD data output/LED3
21 LCDCLK/LED4 O LCD clock output/LED4
22 EVss I GND
23 E VDD I Connect VDD (programming pin)
24 AFTest O Audio test control
25 SpkSW O Main/slave speaker output control
H: Main unit outputs L: slave radio outputs
26 RXD1 I Serial data input (main MPU communication)
27 TXD1 O Serial data output (main MPU communication)
28 SETUP/O O Repeater setup output Active: H
29 HOOK/RXD0 I Palm microphone HOOK input/serial data input Active: L
30 TXD0 O Serial data output PTT active: L
31 RLED O RedLED Active:H
32 GLED O Green LED Active: H
33 PTT I Palm microphone PTT key input PTT Active: L
34 OPT/O O OPT signal output Active: H

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35 RPT/O O RPT signal output Active: H
36 KEYBL O Keypad backlight control Active: H
37 Rx Tone/I I Slave radio signal input Active: L (external pull-up resistor
connected)
38 SETUP/I I SETUP signal input On: H (rising edge trigger)
39 OPT/I I OPT key input Active: L (external pull-up resistor connected)
40 RPT/I I RPT key input Active: L (external pull-up resistor connected)
41 DN I DN key input Active: L (external pull-up resistor connected)
42 UP I UP key input Active: L (external pull-up resistor connected)
43 SCAN I SCAN key input Active: L (external pull-up resistor connected)
44 MONI I MONI key input Active: L (external pull-up resistor connected)

TR-800 Service Manual
－18 －
Programming Guide
Overview
This section describes the programming and setup of the TM-800 series radios and the front panel
controller for use in both unidirectional and bi-directional repeater configurations. In the unidirectional
repeater configuration, one radio operates as the receiver of the repeater and the other radio operates
as the transmitter of the repeater. In the bi-directional repeater configuration, each radio can receive or
transmit. However, the radio that is connected to J0102-Main will be referred to as the “Main radio’ and
the radio that is connected to J0104-Slave will be referred to as the “Slave radio”. Refer to the “Repeater
Communication Interface and Display Unit” section for additional information.
Programming
Programming Tools
The programming software (HR800E) is used to program the Main radio and Slave radio for the desired
repeater configuration.
The front panel controller is programmed with internal DIP switch settings..
Unidirectional Repeater
Main Radio Programming
1. Read the Main radio and Slave radio (The red LED flashes and then follows the green LED).
2. After the radios are read, select “Zone Information” of “Main” from the opening HR800E “Tree View”
window.
3. Enter the transmit frequency for the repeater in both “Rx Frequency (MHz)” and “Tx Frequency
(MHz)” areas.
4. Select the same signaling encode and decode based on the type of operation that is required (None,
CTCSS/CDCSS).
5. Select the power output level through a dropdown arrow button. Three levels, High, Middle and Low
power can be chosen based on your application and local regulatory requirements.
6. Select a “Narrow” bandwidth or a “Wide” bandwidth as defined by the radio licensing authority. You
have the choice of 12.5kHz for narrow bandwidth and 25kHz bandwidth at the moment.