Funkwerk ATR833A Instruction Manual
Operation and Installation
(Document-No. 01.1411.010.71e)
P/N 833A-(1xx)-(1xx)
ATR833A - OLED
VHF Communication
Transceiver
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
2 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
Change History
Revision Date Description of Change
1.00 20.07.2010 FAV – First Release – 2-Knob-HMI
1.01 31.08.2010
New operation function SW V6.1
Microphone-Muting for single-PTT
Squelch default
Correction after internal review
1.02 07.12.2010 Correction of Compliance
2.00 31.05.2011
New cable harness
New remote control, beginning with SW V6.4
List of the Service Bulletins (SB)
Services bulletins are to be inserted in the manual and to be put down
in this table.
SB Number
Rev.
No. Issue Date Entry Date Name
Survey of Variants
Part Number Description
P/N 833A(000)-(000) Base variant (four-knob)
P/N 833A(100)-(100) Two-knob HMI
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
3Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
CONTENTS
1GENERAL........................................................................................................... 5
1.1 Symbols ................................................................................................... 5
1.2 Abbreviations ........................................................................................... 5
1.3 Customer Support.................................................................................... 6
1.4 Features................................................................................................... 6
2OPERATION ....................................................................................................... 7
2.1 Controls ................................................................................................... 7
2.2 ON/OFF ................................................................................................... 9
2.3 Display ..................................................................................................... 9
2.4 Basic Settings ........................................................................................ 11
2.4.1 VOL - Volume............................................................................ 12
2.4.2 SQL - Squelch ........................................................................... 12
2.4.3 DIM – Display Brightness .......................................................... 13
2.4.4 VOX - Voice Activation Speech Level for the Intercom ............. 13
2.4.5 DWM - Dual Watch Mute........................................................... 14
2.4.6 INT - Intercom-Volume .............................................................. 14
2.4.7 EXT - Volume of the External Audio Input ................................. 15
2.5 Frequency Setting.................................................................................. 16
2.5.1 8.33 / 25 kHz Channel Width Selection ..................................... 16
2.5.2 Manual Frequency Input............................................................ 16
2.5.3 Recall a Frequency from the User Memory............................... 17
2.5.4 Recall a Frequency from the List of the 10 Last Used............... 18
2.5.5 Store a Frequency into the User Memory.................................. 18
2.6 Dual Watch Operation............................................................................ 20
2.7 Transmission ......................................................................................... 22
2.8 Reception............................................................................................... 22
3CONFIGURATION ............................................................................................ 23
3.1 SPC - Channel Spacing......................................................................... 23
3.2 Energy Saving Mode – Automatic Display Darkening............................ 24
3.3 PTT-Button Selection............................................................................. 25
3.4 EXT – External Audio Input’s Behavior.................................................. 26
3.5 Microphone Input Sensitivity (MLS/MLD/MRS/MRD)............................. 27
3.5.1 MLS – Left Standard microphone Input Sensitivity.................... 27
3.5.2 MLD – Left Dynamic Microphone Input Sensitivity .................... 27
3.5.3 MRS – Right Standard Microphone Input Sensitivity................. 27
3.5.4 MRD – Right Dynamic Microphone Input Sensitivity ................. 27
3.6 TST - Test Mode.................................................................................... 28
3.7 Master Reset ......................................................................................... 28
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
4 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
4INSTALLATION ................................................................................................ 29
4.1 Advices and Tips ................................................................................... 29
4.2 Telecommunication Data ....................................................................... 29
4.3 Scope of delivery ................................................................................... 29
4.4 Unpacking and Inspecting the Equipment.............................................. 30
4.5 Mounting ................................................................................................ 30
4.6 Equipment Connections......................................................................... 31
4.6.1 Microphone-Connection ............................................................ 31
4.6.2 Headset-Connection.................................................................. 31
4.6.3 Audio-Input................................................................................ 32
4.6.4 Remote Control Panel ............................................................... 32
4.7 Wiring................................................. Fehler! Textmarke nicht definiert.
4.7.1 Conductor Cross Section........................................................... 33
4.7.2 Connector – Pin Allocation ........................................................ 33
4.7.3 Wiring with Cable Harness BSKS833S/BSKS833D .................. 35
4.7.4 Wiring with older Cable Harness BSKS833T............................. 40
4.8 Antenna ................................................................................................. 41
4.8.1 Antenna Selection ..................................................................... 41
4.8.2 Installation Recommendation .................................................... 41
4.9 Microphone / Intercom settings.............................................................. 42
4.10 Post-Installation Check .......................................................................... 43
4.11 Accessories ........................................................................................... 43
4.12 Drawings................................................................................................ 44
4.12.1 Dimensions................................................................................ 44
4.12.2 Mounting Advices ...................................................................... 45
5APPENDIX ........................................................ Fehler! Textmarke nicht definiert.
5.1 Frequency/Channel-Plan ....................................................................... 46
5.2 Technical Data....................................................................................... 47
5.3 Environmental Conditions ...................................................................... 49
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
5Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
1 GENERAL
This manual contains information about the physical, mechanical and
electrical characteristics, as well as information about installation and
operation of the aeronautical VHF voice radio ATR833A.
1.1 Symbols
Advices whose non-observance can cause damage to the
device or other parts of the equipment.
Information
1.2 Abbreviations
Abb. Name/subject Definition
ATC Air traffic control
DIM Dimming Display brightness
EXT External audio input
FREQ Frequency
INT Intercom On-board communication
(no radio transmission)
PTT Push to Talk activates radio transmission
SEL Selection
SQL Squelch Noise suppression when no strong
radio signal is received
VOL Volume Volume of received radio signal
VOX Voice activated intercom Intercom is activated by speech volume
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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1.3 Customer Support
In order to facilitate a rapid return of shipments in case of repairs, please
follow the instructions of the input guide “Reshipment RMA” provided at
the Service-Area within the Funkwerk Avionics web portal
www.funkwerk-avionics.com.
Any suggestions for improvement of our manuals are
Informations on software updates are available at Funkwerk
Avionics web portal www.funkwerk-avionics.com.
1.4 Features
•VHF communication transceiver with 6W output power in 160mm
format
•Frequency range 118,000 to 136,975 MHz
•Automatic selection of 8,33/25 kHz channel spacing
•4 microphone inputs (2 x standard, 2 x dynamic)
•Voice controlled intercom for up to 4 microphones, can be
deactivated for use with external intercom
•Dual-watch technology, simultaneous monitoring of two
frequencies
•Auxiliary audio input
•Memory for up to 100 user-definable named frequencies
•User-defined frequency list exportable/importable to/from PC (via
RS232) - PC software available at www.funkwerk-avionics.com
•Easy recall of the 10 last used frequencies
•OLED display for best readability under all conditions
•Configurable energy saving
To avoid unintentional permanent transmission, the
transmitter automatically stops transmission after two
Minutes of uninterrupted operation.
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2 OPERATION
2.1 Controls
CHANGE
Interchange
active and
standby
frequency
DW
Activate /
Deactivate
dual watch
reception of
standby
frequency
SET
Short press:
Choose item to
be adjusted with
Very long press:
Access
configuration
menu
FREQ
Rotary
knob
Change
underlined
value
ON/OFF
VOL/SEL
Rotary knob
Adjust value or
select item given
within the display’s
lower left corner:
Choosen with :
adjust VOLume,
squelch, etc.
Choosen with :
SELect item from list
of frequencies
CURSOR
Short press:
Set underline
to select which
value to be
changed with
Long press:
In MEM only:
add name to
memory item
MEM
Short press:
Access user frequency
memory / list of last
used frequencies
Long press:
In MEM only: store
frequency/name
Use together to adjust
volume, squelch or other setting
Use together to change
standby frequency
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
8 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
ON/OFF Switch On press button for approx. 0.5 s
Switch Off press button for approx. 2 s
DUAL
WATCH
Activates/Deactivates the mode for mutual
reception of standby frequency
(indicated by “DW” instead of “SBY” for
standby frequency)
SET
1. Choose item volume/squelch/etc. to be
adjusted by
Æpress button shortly
2. Shortcut to volume setting
Æpress button for at least 1.5 seconds
3. Enter configuration menu
Æpress button for at least 5 seconds
CURSOR
1. Move underline within standby frequency,
to be adjusted by
Æpress button shortly
2. Add name to frequency within memory
Æpress button for at least 1.5 seconds
CHANGE Interchange active and standby frequency
MEM
1. Access user defined frequency list.
Æpress button shortly once
2. Access list of 10 last used frequencies
Æpress button shortly twice
3. Store active freq. to selected memory
Æpress button for at least 1.5 seconds
VOL / SEL
Rotary
Knob
1. Adjust volume or other item selected by
, e.g. volume, squelch, DIM level, etc.
2. Select frequency from user memory or list
of last used frequencies
FREQ
Rotary
Knob
Change the underlined value
(i.e. adjust standby frequency, or input
character when entering name)
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2.2 ON/OFF
Turn the device on with
ON: press button for 0.5 s
OFF: press button for 2 s
After turning-on the display shows the software version as follows:
(Example)
Device Name
ATR833A
Software-Version
e.g. v6.0
The Start Screen indicates device type and software version.
After that screen the device changes into normal operation (direct input
mode).
The radio starts with the same frequencies and settings from before
being switched off.
2.3 Display
ATR833A
v6.0
118.000
124.910
A
CT
SBY
VOL 03
RX
A
BCDEFGH
BAT
RX
Cursor marking:
Set position with , adjust
value with
Use of standby
frequency:
RX = receiving
in dual watch
mode
Item choosen by
, or when
accessing
frequency list:
Adjust value or
select number
with
Low Battery warning
User-defined name, when
selecting frequency from
user memory
Use of active frequency:
TX = transmitting
RX = receiving
Te = timeout (solve and push PTT
to re-enable transmissions)
Fixed label for
active frequency
Label for standby
frequency:
DW = dual watch active
SBY = no dual watch
Standby
frequency
Active
frequency
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
10 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
Display Meaning Remark
ACT Fixed label for active
frequency
SBY Label for standby frequency,
when no dual watch activated
Dual watch mode allows
intermittent monitoring of
standby frequency activity
DW Label for standby frequency,
when dual watch mode
activated
Dual watch mode allows
intermittent monitoring of
standby frequency activity
118.000 Active Frequency Frequency used for
transmissions and
receptions
124.910 Standby frequency May be monitored in dual
watch mode
RX Receiving on this frequency Usually on active
frequency; can also happen
on standby frequency when
dual watch activated
TX Transmitting on active
frequency
PTT pressed
Te Transmission ended
automatically after 2 minutes
continuous transmission
Press PTT shortly to
re-enabel transmissions
VOL 03 Volume level for receiving
SQL 03 Squelch level Radio signal strength
threshold required for
reception; suppresses
noise and weak/distant
transmitter
DIM 07 Display brightness
VOX 05 Vox level Speech level that activates
the intercom
DWM -2 Dual watch mute Reduction in volume for
dual-watch-reception on
standby frequency
INT 04 Intercom volume
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
11Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
Display Meaning Remark
EXT 02 Volume of external audio-
signals
Set to 00, if no external
device attached, to prevent
noise pickup
MEM 00 Item from user memory Substitutes standby
frequency; can have name,
if provided by user. Active
frequency can be stored
into this entry with long
press on
LST 00 Item from list of last used
frequencies
Substitutes standby
frequency
ABCDEFGH User-provided name for
frequency within user
memory
Displayed while selecting
from user memory, when
the user has provided a
name for this specific
memory entry
BAT Very low supply voltage Transmission only with
reduced power possible
(decreased radio range!)
F1 … F7 Internal failure Device must be sent back
to the manufacturer
2.4 Basic Settings
To choose between the following settings, use the button:
0. VOL ....... Volume (chosen by default)
1. SQL ....... Squelch
2. DIM ........ Display Brightness
3. VOX ....... Speech level required to activate the intercom
4. DWM ..... Dual watch mute
5. INT ........ Intercom volume
6. EXT ....... Volume of external audio signals
…. back to Volume
(can also be reached by long press of or 12 seconds inactivity)
The chosen setting can be adjusted by the rotary knob.
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2.4.1 VOL - Volume
Can be reached by a long press of the button, but is also
automatically chosen by the radio after 12 seconds of user
inactivity.
Adjusts the volume of received radio signals by turning the
knob. The higher the value, the louder the reception of radio signals.
ACT
123.450
SBY
118.910
VOL 03
2.4.2 SQL - Squelch
By short pressing the key once, with the help of the rotary
knob the squelch level can be adjusted.
This is a threshold that has to be exceeded by radio signal levels from
other senders, in order to activate the reception circuitry. The higher the
number, the stronger the radio signals have to be in order to be received.
ACT
123.450
SBY
118.910
SQL 07
The setting for the squelch depends on different factors. For motor
aircrafts an initial higher setting is typically appropriate, gliders may use
settings lower value. Lower numbers means higher input sensitivity. This
allows receptions of weaker signals (radio stations at higher distance),
but can also result in pickup of own-aircraft radio interference sources
(engine, strobe lights).
The VOL setting controls the volume of received radio
signals only.
It does neither control the volume of the intercom nor the
external audio input, for these use the INT and EXT settings.
Range: 01 - 16
Range: 01 - 10
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2.4.3 DIM – Display Brightness
By short pressing the key twice, with help from the rotary
knob the display’s illumination can be adjusted.
ACT
123.450
SBY
118.910
DIM 08
2.4.4 VOX - Voice Activation Speech Level for the Intercom
By short pressing the key three times, with the help of the
rotary knob, the threshold value for VOX can be adjusted.
VOX defines the crew’s speech volume that is required to activate the
intercom functionality. The higher the value, the louder you need to
speak in order to activate the intercom.
Exception: VOX 01 corresponds to “always on”
The internal filter circuitry has the ability to distinguish between engine
noise and speech.
ACT
123.450
SBY
118.910
VOX 05
In case of very noisy backgrounds or use of uncompensated
microphones, the automatically VOX functionality may not work
satisfying. In these cases, it is possible to deactivate the VOX
automatism with VOX 01, and to use an external intercom-switch.
The default Squelch setting is SQ05 (up to SW V5.7: SQ07).
High values can suppress weak signals. Squelch is not
related to any function of the Intercom.
Range: 01 - 10
Range: 01 - 10
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2.4.5 DWM - Dual Watch Mute
By short pressing the key four times, with help from the
rotary knob the muting of the volume level for receptions on the standby
frequency (when having dual watch active) can be controlled. This allows
acoustic distinction between both frequencies.
See 2.6 for further information about the dual watch mode.
ACT
123.450
SBY
118.910
DWM -2
Lower numbers (= larger values negative) indicate lower volume for dual
watch receptions, higher numbers (= smaller values negative) louder
volume. The highest value 00 indicates having the same volume for dual
watch receptions as for receptions on the active frequency.
2.4.6 INT - Intercom-Volume
By short pressing the key five times, with help from the
rotary knob the intercom volume level can be controlled.
The intercom functionality is the on-board crew-internal communication
for multiple-seated powered aircraft.
The intercom can be activated
•automatically whenever someone speaks into a microphone by use of
the VOX functionality (see 2.4.4 for adjusting the required speech
level), or
•manually by use of an external intercom switch
The higher the value, the louder the intercom.
ACT
123.450
SBY
118.910
INT 03
If the intercom is deactivated by cabling, the intercom
volume cannot be adjusted. The radio indicates this by
displaying INT --
Range: -8 - 00 (-8 is more muted, 00 is no muting)
Range: 01 - 10
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2.4.7 EXT - Volume of the External Audio Input
By short pressing the key six times, with help from the
rotary knob, the volume from the connected external audio signals
(Warning tones, music, etc…) can be set.
The higher the value, the louder the volume of the external audio signal.
A value of 00 deactivates the external audio input.
ACT
123.450
SBY
118.910
EXT 03
When no other device is connected to the external audio
input, the input should be muted by selecting 00, in order to
prevent noise by pickup of on-board interferences.
The priority of the external audio input in comparison to radio
receptions can be configured, see 3.4.
Range: 00 - 10
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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2.5 Frequency Setting
Frequency setting is always done by the two steps of
1. entering a new standby frequency to the desired value, and then
2. interchanging the new standby frequency and the previous active
frequency by using .
Entering a new standby frequency can be done by
a) manual input,
b) recall of previously stored frequencies from the user memory, or
c) recall from the list of the last 10 used frequencies.
2.5.1 8.33 / 25 kHz Channel Width Selection
Whether a frequency is used with channel width 8.33 kHz or 25 kHz, is
automatically determined by the value of the frequency entered, and
requires no additional user activity.
Channels used with 25 kHz width are entered in multiples of 25kHz:
123.500, 123.525, 123.550, 123.575, 123.600 etc. These are compatible
with the old 25kHz-only radios. To use the same frequencies with
8.33kHz width, the frequency values entered are increased by 5kHz:
123.505, 123.530, 123.555, 123.580, 123.605 etc.
This numbering scheme used for this distinction is internationally
standardised by ICAO, and consistently used in official documents (like
e.g. the VFR navigation charts) and phraseology used by ATC.
For more detailed information please refer to chapter 5 – but as said
above, for correct channel width selection this knowledge is not required.
2.5.2 Manual Frequency Input
The standby frequency is input by
•selecting with the button which part of the frequency to
change, and
•changing the selected part with the rotary knob.
The selected part of the frequency is marked with the underline.
interchanges the newly set standby frequency and the former active
frequency.
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
17Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
When having the channel selection configured for 8.33 kHz steps, the
frequency is input in three steps:
123.450 →123.450 →123.450
When having the channel selection configured for allowing 25 kHz
channels only, the frequency is input in two steps:
123.450 ↔123.450
2.5.3 Recall a Frequency from the User Memory
To access the user memory frequency list, press once, and select
one of the 100 memory entries with the turn knob. The
selected memory entry substitutes the former standby frequency.
In the lower left corner of the display, the number of the memory entry
selected is indicated by [MEM xx] (with xx = 00 … 99).
If a name has been provided by the user for this memory entry, it is
displayed next to the memory entry number during the selection process.
ACT
123.450
SBY
121.270
MEM 17 HAMBURG
interchanges the newly set standby frequency and the former active
frequency, and leaves the memory list menu.
In order to speed up the entering of new frequencies, it is
possible to configure the radio to allow entering of those
frequencies only that are used with 25 kHz channel width.
Please refer to chapter 3.1 for information on this
configuration.
However, when choosing this option, please keep in mind to
re-enable 8.33 kHz channel selection before flying into areas
where 8.33 kHz channels are used.
Entry number (Range: 00 – 99)
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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Alternatively, the memory access automatically ends after a timeout, or
can be ended by pressing twice. The former standby frequency has
now been substituted by the frequency selected from the memory.
2.5.4 Recall a Frequency from the List of the 10 Last Used
The radio automatically keeps track of the last 10 used active
frequencies. To access this list, press twice, and select one of the 10
list entries with the turn knob. The selected memory entry
substitutes the former standby frequency.
In the lower left corner of the display, the number of the list entry
selected is indicated by [LST xx] (with xx = 00 … 10).
ACT
123.450
SBY
118.700
LST 01
Key interchanges the newly set standby frequency and the former
active frequency, and leaves the last used list menu.
Alternatively, the list access automatically ends after a timeout, or can be
ended by pressing once. The former standby frequency has now
been substituted by the frequency selected from the memory.
2.5.5 Store a Frequency into the User Memory
The active frequency can be stored into any entry of the user memory.
This is achieved by a long press on when having the user memory
entry to be overwritten selected.
The following example stores the frequency 124.350 MHz of KONSTANZ
into the user memory entry 17:
List entry „00“ contains the last standby frequency from the
MEM menu.
Entry number (Range: 00 – 10)
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
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Step •Display (Example)
1. Have frequency to be stored set as
active frequency
ACT
124.350
SBY
135.700
VOL 03
2. Enter memory list:
•Press
once in order to access
the user memory. (This overwrites the
former standby frequency.)
ACT
124.350
SBY
122.000
MEM 00 KEMPTEN
3. Select the memory position to be used
•with
ACT
124.350
SBY
121.270
MEM 17 HAMBURG
4. Overwrite the selected memory entry
•with a long press of .
•The success is indicated by copying
the active frequency into the memory
entry (same as standby frequency).
•A previously defined name is
automatically cleared.
ACT
124.350
SBY
124.350
MEM 17
You can now leave the user memory access by pressing twice or by
waiting for the timeout.
Alternatively, you can add a name of up to 8 characters to the
selected memory entry:
•While having the memory entry
selected, i.e. coming from step 4 above
when adding the name to the new
stored frequency, or else coming from
step 3 above when adding the name to
an existing memory entry:
5. Place the cursor into the name field
•with a long press of
ACT
124.350
SBY
124.350
MEM 17
ATR833A / P/N 833A-(1xx)-(1xx)
Operation and Installation
20 Dokument-Nr.: 01.1411.010.71e / Revision: 2.00
6. Enter the name
•by changing the selected character
with , and advancing the selection
with , just as when manually
entering a standby frequency.
ACT
124.350
SBY
124.350
MEM 17 KONSTANZ
7. Store the name
•either with a long press of ,
•or with a long press of .
ACT
124.350
SBY
124.350
MEM 17 KONSTANZ
You can now leave the user memory access by pressing twice or by
waiting for the timeout.
2.6 Dual Watch Operation
The ATR833A comprises one receiver, therefore DUAL-Watch
(simultaneously monitoring two frequencies) is implemented by
alternating automatically between the active and the standby frequency.
With dual watch mode active, basically the standby (lower) frequency is
tuned in, shortly interrupted in regular intervals by tuning in the active
(upper) frequency for a fraction of a second.
Every then detected radio signal on the active (upper) frequency has
priority, and pauses the dual watch monitoring of the standby (lower)
frequency, as long as the reception/transmission continues on the active
(upper) frequency.
Transmissions are always done one the active frequency.
The dual watch mode is activated by pressing , and indicated by a
changing the “SBY” label for the standby frequency to “DW”.
ACT
123.450
DW
135.700
VOL 05
The dual watch mode is deactivated by pressing again, and by any
operations changing either of the frequencies.
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