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Sigtronics Aviation Intercom Technical Information

On this page you will find intercom instructions, parts lists, and installation information you may download. The files are in Adobe PDF format and can be opened by Adobe Acrobat Reader. You will need Acrobat Reader 5.0 or higher. Click on the Get Acrobat button below to download your free copy from Adobe.

For technical information on the use or installation of Sigtronics products not covered here, E-mail Technical Support: tech@sigtronics.com or call Monday through Friday 8:00 am to 4:30 pm Pacific Time. 909 305-9399

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Last revised: Wednesday, November 23, 2016

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INSTALLATION AND OPERATING INSTRUCTIONS
Listed Alphabetically by Model Number

RES
RES
Installation and Operating Instructions
Model: RES (Out of Production)
Remote Stereo Music Switcher for Single Seat Aircraft or Non-Sigtronics Intercoms.
 
RES-2
RES-2
Installation and Operating Instructions
Model: RES-2
Remote Stereo Music Switcher for Single Seat Aircraft or Non-Sigtronics Intercoms.
 
RES-400
RES-400 Installation and Operating Instructions
Model: RES-400 (Out of Production)
Remote Stereo Music Switcher for SPA-400 Intercoms.
 
RES-401 / RES-601
RES-401 Installation Instructions
Models: RES-401 and RES-601
Remote Stereo Music Switcher for SPA-400 / SPA-600 Intercoms.
Operating Instructions
Models: RES-401 and RES-601
Remote Stereo Music Switcher for SPA-400 / SPA-600 Intercoms.
 
RMS-440 / RMS-640
RMS-640
Installation Instructions
Models: RMS-440 and RMS-640
Remote Stereo Music Switcher for SAS-440 / SAS-640 Intercoms.
Operating Instructions
Models: RMS-440 and RMS-640
Remote Stereo Music Switcher for SAS-440 / SAS-640 Intercoms.
 
SAS-440 / SAS-640
SAS-640 Intercom
Installation and Operating Instructions
Models: SAS-440 and SAS-640
Panel Mount Intercom with Auto Squelch and Pilot Isolate.
Figure 4 Installation Drawing Modification
Models: SAS-440 and SAS-640 (Diode Mod.)
Figure 4 installation drawing modification for Non Audio Panel, Single Radio installations.
 
SCI-S4 / SCI-S6
SCI-S6 Intercom
Installation Instructions
Models: SCI-S4 and SCI-S6
Panel Mount Intercom with Dual Stereo Music Inputs, Pilot Isolate, and Crew Isolate.
Operating Instructions
Models:SCI-S4 and SCI-S6
Panel Mount Intercom with Dual Stereo Music Inputs, Pilot Isolate, and Crew Isolate.
SCI Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Upgrade Overview
Models: SPA-400 to SCI-S4
Upgrading a SPA-400 intercom system overview.
Upgrade Overview
Models: SPA-600 to SCI-S6
Upgrading a SPA-600 intercom system overview.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Audio Panel: King KMA 24 Audio Panel
Radio: Garmin GNC250/XL
Radio: Terra TX760D
 
SCI-4 / SCI-6
SCI-6 Intercom
Installation and Operating Instructions
Models: SCI-4 and SCI-6
Panel Mount Intercom with Dual Controls, Pilot Isolate, and Crew Isolate.
SCI Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Upgrade Overview
Models: SPA-400 to SCI-4
Upgrading a SPA-400 intercom system overview.
Upgrade Overview
Models: SPA-600 to SCI-6
Upgrading a SPA-600 intercom system overview.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Audio Panel: King KMA 24 Audio Panel
Headset Jacks: U-174/U
Radio: Microair 760
 
SDB-K / SDB-KH (SPA-4Si / SPA-4SiH)
SDB-K Intercom Installation and Operating Instructions
Models: SDB-K and SDB-KH
Stereo Panel Mount Intercom System for Aircraft with Dual Audio Panels.
SDB Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
 
SDB-800
SDB-800 Intercom Installation and Operating Instructions
Model: SDB-800
Panel Mount Intercom System for Aircraft with Dual Audio Panels.
SDB Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
 
SPA-400 / SPA-400N
SPA-400 Intercom
Installation and Operating Instructions
Model: SPA-400
Panel Mount Intercom, Standard 4 Place.
Installation and Operating Instructions
Model: SPA-400N
Panel Mount Intercom, 4 Place High Noise Version.
Comm Radio Transmit
Models: SPA-400 and SPA-400N
Comm Radio Transmit Trouble-Shooting Guide
Helpful Hints
Model: SPA-400N
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Audio Panel: King KA 134 Audio Panel
Audio Panel: King KMA 20 Audio Panel
Audio Panel: King KMA 24 Audio Panel
AUX Audio: Auxiliary Audio Input
Headset Jacks: U-174/U
Radio: Apollo SL-40
Radio: Becker AR 3201
Radio: Becker AR 4201
Radio: Com 120
Radio: Flightline FL-760
Radio: Funkwerk ATR833
Radio: Garmin GTR 225
Radio: Garmin GNC250/XL
Radios: ICOM A-200 and A-210
Radios: ICOM A20 and A21
Radios: ICOM A3, A6, A15, A22, and A24
Radio: King KX 155 and KX 165
Radio: King KY 97A
Radio: King KY 195B
Radio: King KY 197A
Radio: MGL V6
Radio: Microair 760
Radio: Narco COM 810
Radio: Narco COM 810+
Radio: Narco MK12D
Radio: Sporty's SP-400
Radio: VAL Com 760
Radio: VAL Com 2000
Radio: Yaesu FTA-550
 
SPA-4S / SPA-4SN
SPA-4S Intercom
Installation Instructions
Model: SPA-4S and SPA-4SN (Current Production)
Panel Mount 4 Place Stereo Intercom. Standard and High Noise Versions.
Operating Instructions
Model: SPA-4S and SPA-4SN (Current Production)
Panel Mount 4 Place Stereo Intercom. Standard and High Noise Versions.
Installation Instructions
Model: SPA-4S and SPA-4SN (Out of Production)
Serial Numbers: 4603444 and lower
Panel Mount 4 Place Stereo Intercom. Standard and High Noise Versions.
Operating Instructions
Model: SPA-4S and SPA-4SN (Out of Production)
Serial Numbers: 4603444 and lower
Panel Mount 4 Place Stereo Intercom. Standard and High Noise Versions.
Helpful Hints
Model: SPA-4SN
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
AUX Audio SPA-4S: Auxiliary Audio Input
AUX Audio SPA-4SN: Auxiliary Audio Input
Radio: Garmin GNC250/XL
Radios: ICOM A3, A6, A22, and A24
Radios: ICOM A-200 and A-210
Radio: King KY 97A
Radio: Microair 760
Radios: TERRA TMA 330D, TMA 340D, and TMA 350D
Radio: Apollo SL-40
 
SPA-4Si / SPA-4SiH (SDB-K / SDB-KH)
SPA-4Si Intercom Installation and Operating Instructions
Models: SPA-4Si and SPA-4SiH
Stereo Panel Mount Intercom System for Aircraft with Dual Audio Panels.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
 
SPA-600 / SPA-600N
SPA-600 Intercom Installation and Operating Instructions
Model: SPA-600
Panel Mount Intercom, Standard 6 Place.
Installation and Operating Instructions
Model: SPA-600N
Panel Mount Intercom, 6 Place High Noise Version.
Comm Radio Transmit
Models: SPA-600 and SPA-600N
Comm Radio Transmit Trouble-Shooting Guide
Helpful Hints
Model: SPA-600N
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Headset Jacks SPA-600: U-174/U
Headset Jacks SPA-600N: U-174/U
 
SPE-2 / SPE-4
SPE-2 Intercom
Installation and Operating Instructions
Model: SPE-2 (Out of Production)
Permanent Intercom, 2 Place.
Installation and Operating Instructions
Model: SPE-4 (Out of Production)
Permanent Intercom, 4 Place.
 
SPO-20 / SPO-40
SPO-20 Intercom
Operating Instructions
Model: SPO-20 (Out of Production)
Transcom Portable Intercom, 2 Place.
Operating Instructions
Model: SPO-40 (Out of Production)
Transcom Portable Intercom, 4 Place.
 
SPO-22 / SPO-42 / SPO-62 / SPO-82 / SPO-102
SPO-22 Intercom
Operating Instructions
Models: SPO-22, SPO-42, SPO-62, SPO-82, and SPO-102
Transcom II Portable Battery Powered Intercom with Aux In and Out Jacks.
Helpful Hints
Models: SPO-22N, SPO-42N, and SPO-62N
Helpful Hints for Communicating in Unusually High Noise Environments.
 
Sport 200
Sport 200 Intercom
Installation and Operating Instructions
Model: Sport 200
Panel Mount Intercom, 2 Place, High Noise.
Comm Radio Transmit
Model: Sport 200
Comm Radio Transmit Trouble-Shooting Guide
Helpful Hints
Models: Sport 200 and Sport 200S
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
Audio Panel: King KMA 24 Audio Panel
Headset Jacks: U-174/U
Radio: Apollo SL-40
Radio: Becker AR 3201
Radio: Becker AR 4201
Radio: Filser Electronic ATR 500
Radio: Flightline FL-760
Radio: Garmin GTR 200
Radios: ICOM A3, A6, A14, A22, and A24
Radio: ICOM A4
Radios: ICOM A20 and A21
Radios: ICOM A23 and A5
Radios: ICOM A-200 and A-210
Radio: King KX 99
Radios: King KX 155 and KX 165
Radio: King KX 175B
Radio: King KY 197A
Radio: Microair 760
Radio: Sporty's SP-200
Radio: Sporty's SP-400
Radio: TRIG TY 91
Radio: Vertex Standard VXA-300
Radio: XCOM VHF760
Radio: Yaesu FTA-750
 
Sport 200 S
Sport 200S Intercom
Installation Instructions
Model: Sport 200 S (Current Production)
Panel Mount Intercom, 2 Place, Stereo, High Noise.
Operating Instructions
Model: Sport 200 S (Current Production)
Panel Mount Intercom, 2 Place, Stereo, High Noise.
Installation Instructions
Model: Sport 200 S (Out of Production)
Serial Numbers: 4801700 and lower
Panel Mount Intercom, 2 Place, Stereo, High Noise.
Operating Instructions
Model: Sport 200 S (Out of Production)
Serial Numbers: 4801700 and lower
Panel Mount Intercom, 2 Place, Stereo, High Noise.
Helpful Hints
Models: Sport 200 and Sport 200 S
Helpful Hints for Communicating in Unusually High Noise Environments.
SPA Panel Template
Models: SCI, SDB, SPA, and Sport 200 S
Panel Templates for intercoms.
Figure 4 installation drawing modification for specified audio panels, radios, and jacks.
AUX Audio: Auxiliary Audio Input
Radios: Apollo SL-30 and SL-40
Radio: Becker AR 3201
Radio: Becker AR 4201
Radio: Filser Electronic ATR 500
Radio: Filser Electronic ATR 600
Radio: Flightline FL-760
Radio: Funkwerk ATR 833
Radios: ICOM A3, A6, A22, and A24
Radio: ICOM A4
Radios: ICOM A23 and A5
Radios: ICOM A-200 and A-210
Radio: King KX 125
Radio: King KY 97A
Radio: King KY 197A
Radio: KRT 2, KRT 2A
Radio: MGL V10
Radio: Microair 760
Radio: Sporty's SP-200
Radios: Vertex Standard VXA-300 and VXA-710
Radio: XCOM VHF760
Radio: XCOM VHF760 and Auxiliary Audio Input
Radio: Yaesu FTA-550
 
SRE-2 / SRE-4
SRE-2
Installation and Operating Instructions
Model: SRE-2 (Out of Production)
Remote Mounted Intercom, 2 Place.
Installation and Operating Instructions
Model: SRE-4 (Out of Production)
Remote Mounted Intercom, 4 Place.
 
ST-400 / RES-400
ST-400 Intercom
Installation and Operating Instructions
Model: ST-400 / RES-400 (Out of Production)
Panel Mount Intercom, Standard 4 Place with Remote Stereo Music Switcher.
Manufactured Before 10/1995
 
ST-400 / ST-600
ST-400 Intercom
Installation Instructions
Model: ST-400 / ST-600
Stereocom Panel Mount Intercom, Standard 4 and 6 Place with Remote Amplified Stereo Music Switcher.
Operating Instructions
Model: ST-400 / ST-600
Stereocom Panel Mount Intercom, Standard 4 and 6 Place with Remote Amplified Stereo Music Switcher.
 
ST-440 / ST-640
ST-640 Intercom
Installation Instructions
Model: ST-440 / ST-640
Panel Mount Intercom with AutoSquelch, Pilot Isolate, and Remote Stereo Music Switcher, 4 and 6 Place.
Operating Instructions
Model: ST-440 / ST-640
Panel Mount Intercom with AutoSquelch, Pilot Isolate, and Remote Stereo Music Switcher, 4 and 6 Place.
Figure 4 Installation Drawing Modification
Models: ST-440 and ST-640 (Diode Mod.)
Figure 4 installation drawing modification for Non Audio Panel, Single Radio installations.
 

MODIFICATION INSTRUCTIONS
Listed Alphabetically by Model Number

SDB-800
SDB-800 Intercom Sidetone Modification
Model: SDB-800 (Current Production)
Serial Numbers: 1151486 A and B to Current
Panel Mount Intercom Transmit Sidetone Modification for Circuit Board 1528
Sidetone Modification
Model: SDB-800 (Out of Production)
Serial Numbers: 1151004 A and B to 1151485 A and B
Panel Mount Intercom Transmit Sidetone Modification for Circuit Board 1440
 
SPA-400 / SPA-600
SPA-400 Intercom
Dual SPA Installation
Model: SPA-400 and SPA-600 (Current Production)
It allows pilot and co-pilot to transmit and receive on the aircraft radio and intercom between themselves, while back passengers can have a separate conversation without interrupting the front two.
Sidetone Modification
Model: SPA-400 and SPA-600 (Current Production)
Serial Numbers: SPA-400 S/N 6069006 to Current and SPA-600 S/N 1102528 to Current
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1528
Sidetone Modification
Model: SPA-400 and SPA-600 (Out of Production)
Serial Numbers: SPA-400 S/N 6053486 to 6069005 and SPA-600 S/N 1101839 to 1102527
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1440
Sidetone Modification
Model: SPA-400 (Out of Production)
Serial Numbers: 61960 to 6053485
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092-4
Sidetone Modification
Model: SPA-400 (Out of Production)
Serial Numbers: 60975 to 61959
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092-3
Sidetone Modification
Model: SPA-400 (Out of Production)
Serial Numbers: 60500 to 60974
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092-2
Sidetone Modification
Model: SPA-400 (Out of Production)
Serial Numbers: 60001 to 60499
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092
ICS Load Modification
Model: SPA-400 and SPA-600
This modification is used when a Sigtronics SPA Intercom is connected to a radio or audio panel that has a low impedance headphone output (less than 100 ohms).
SPA Intercom and Portable Push-To-Talk Switches
Model: SPA-400 and SPA-600
Installation instructions for the use of Portable Push-To-Talk Switches with a Sigtronics Panel Mount Intercom System.
External Mic Interrupt Modification
Model: SPA-400, SPA-600, ST-400, and ST-600
Problem: The intercom stays hot or live all the time no matter what position the intercom squelch is set to. Most common with Terra radio equipment, King KY-92 radios, and a few others.
Pilot Isolate Option
Model: SPA-400 and SPA-600
Add pilot isolate to a SPA intercom system.
Music Input
Model: SPA-400, SPA-400N, SPA-600, and SPA-600N
Music input options for Sigtronics SPA panel mount intercoms.
 
Sport 200
Sport 200 Intercom
Sidetone Modification
Model: Sport 200 (Current Production)
Serial Numbers: 6202993 to Current
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1528
Sidetone Modification
Model: Sport 200 (Out of Production)
Serial Numbers: 6202355 to 6202992
Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1440
ICS Load Modification
Model: Sport 200
This modification is used when a Sigtronics Sport 200 Intercom is connected to a radio or audio panel that has a low impedance headphone output (less than 100 ohms).
 
RES-400 / RES-600
RES-400
Low Power Music Source Modification
Model: RES-400 and RES-600 (Out of Production)
Music Switcher low power music source modification; Monaural wiring instructions; Notes on music sources with floating speaker outputs.
 
ST-400 / ST-600
ST-400 Intercom
Dual ST Installation
Model: ST-400 and ST-600 (Current Production)
It allows pilot and co-pilot to transmit and receive on the aircraft radio, listen to music, and intercom between themselves, while back passengers can have a separate conversation and music without interrupting the front two.
Older ST-400 / ST-600 Units and Four Wire Speaker Output Music Systems
Model: ST-400 and ST-600 (Out of Production)
Serial Numbers: RES-400 S/N 1002922 and lower and RES-600 S/N 1050604 and lower
Older ST-400 / ST-600 with the RES-400 or RES-600 stereo music switchers manufactured before 10/1995.
 

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