Author Topic: Must the HM-133 pcbs be used with the IC-880  (Read 3023 times)

bobfrost

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Must the HM-133 pcbs be used with the IC-880
« on: 2015-08-21, 03:00:32 »
I do not need the functionality of the microphone buttons and need to know if the RR can be used without the HM-133.  If so, what are the strapping configurations for the Control and Remote units?

sm2o

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Re: Must the HM-133 pcbs be used with the IC-880
« Reply #1 on: 2015-08-21, 08:36:13 »
I have not tested but after looking at the 880 schematics it looks like a HM-103 would work with the strappings from the chapter ICOM CI-V or most other simple ICOM mics like HM-36 but then you need a converter from circular connector to RJ-45

73 de mike

bobfrost

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Re: Must the HM-133 pcbs be used with the IC-880
« Reply #2 on: 2015-08-22, 00:29:04 »
If I understand, you think it might work with the strappings from the ICOM CI-V or other ICOM mics but I take it you are also indicating I would need to use the mic for which the strappings apply.  That is not use the original 880 microphone?
73
Bob

sm2o

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Re: Must the HM-133 pcbs be used with the IC-880
« Reply #3 on: 2015-08-22, 08:55:29 »
Hi

yes the HM-133 has no ordinary PTT signal it only send PTT over the serial protocol, so if you want to use HM-133 you must have the adapters

73 de mike