This project is to develop a way to use a Codan 9350 or 3040 automatic antenna with an Icom radio. Most Icom radios support the Icom AH-4 ATU, so the approach is to design a protocol converter that converts the protocol used by the 9350 and 3040 to the AH4 protocol to allow full integration with the Icom radios that support the AH-4.
The ic9350 Protocol Converter uses the interface uses the radio's ATU interface in the way that Icom intended, and will not disrupt radio operation .
|Steady on||Tune success|
|1 flash||Tune failed||Tune fail signaled by 9350 / 3040|
|2 flashes||START signal < 250ms||RESET received from Icom|
|3 flashes||/TUNE low prior to initiation||Tested without internal pull-up - fault could be no connection to 9350 / 3040.|
|4 flashes||Timeout waiting for /START, /TUNE at completion||25 second timeout|
|5 flashes||Timeout waiting for IND||1000ms|
|6 flashes||Timeout waiting for TUNE||1000ms|
Table 2 shows the STATUS LED indications. Note the 25 second timeout waiting for START, /TUNE, /IND at completion of a tune process,
Fig 1 shows an ic9350 prototype constructed on a PCB design by Mark Kyle, VK4KZK. The boards are designed to take 4 Pole PC Mount Plugable Header (Jaycar HM3104 and HM3124) for both radio and antenna connections (though in this prototype, the radio side is direct wired).
Fig 2 shows the ic9350 complete in a UB5 Jiffy box (box dimensions 83 x 54 x 31mm not including connectors etc). To connect to the 9350 / 3040, and standard Codan cable is used, the radio end connector is cut off and the appropriate four wires are terminated on the plugable header at the right hand side of the picture.
|1.02||26/02/2017||Updated for v1.03 3040 support.|
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