Technical Information in PDF |
Installation and Operating Instructions | | Installation and Operating |
| Installation and Operating |
| Installation and Operating |
| Installation and Operating |
| Panel Template |
| Installation |
| Operating |
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Radio Specific Installation Instructions Figure 4 installation drawing modification for specified radios. | | | | |
| SPA-400 For ICOM A3, A6 , A22, A24 Radios | SPA-400 For King KA 134 Audio Panel | SPA-400 For King KMA 20 Audio Panel |
| | | SPA-400 For U-174 / U Headset Jacks |
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Modification | | 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. |
| Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1528, (SPA-400 S/N 6069006 to Current & SPA-600 S/N 1102528 to Current) |
| Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1440, (SPA-400 S/N 6053486 to 6069005 & SPA-600 S/N 1101839 to 1102527) |
| Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092-4, SPA-400 Panel Mount, S/N 61960 to 6053485 |
| Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092-3, SPA-400 Panel Mount, S/N 60975 to 61959 |
| Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092-2, SPA-400 Panel Mount, S/N 60500 to 60974 |
| Panel Mount Intercom Transmit Sidetone Modification Circuit Board 1092, SPA-400 Panel Mount, S/N 60001 to 60499. |
| 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). |
| Installation Instructions for use on Sigtronics Panel Mount Intercom Systems |
| This modification applies to a Sigtronics SPA-400/600 or ST-400 / ST-600 installations. |
| Add pilot isolate to a SPA-400 / SPA-600 Intercom. |
| Music input options for Sigtronics SPA panel mount intercoms. |
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Trouble-shooting | | Instructions designed to assist avionics technicians in diagnosing comm? radio transmit problems following intercom installation. |
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Helpful Hints | | Communicating in Unusually High Noise Environments |