I have a CDM1250 I'm borrowing from a friend for the time being, it is supposedly programmed to only output audio from the front mic plug. What would be the pin outs to plug it in to wire a plug or audio jack for it? Thanks
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CDM1250 radio output
- Thread starter iceman977th
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mmckenna
I ♥ Ø
The front microphone jack on these CDM series radios is an RJ-48, 10 pin jack. The outer two pins (1 & 10) are used by the telephone style handsets for received audio. It'll be a low speaker level, but you should be able to pick up audio there. I've never used a handset with any of mine, so this is from prior research. I do believe there is a setting in CPS where you tell it what kind of microphone you are using. That -could- turn the received audio on/off at the mic jack, so if it doesn't work, that -might- be the issue.
You can also pick up received audio off the rear 20 pin connector. You can use the older 16 pin connectors on these just fine, you won't miss anything useful on the two outer sets of pins.
Speaker Audio is on Pins 1 & 16 (don't ground either one)
Flat RX Audio is on Pin 11 with Pin 7 as the ground
You can also pick up received audio off the rear 20 pin connector. You can use the older 16 pin connectors on these just fine, you won't miss anything useful on the two outer sets of pins.
Speaker Audio is on Pins 1 & 16 (don't ground either one)
Flat RX Audio is on Pin 11 with Pin 7 as the ground
Thanks for the info. I think this one was set up to only output audio from the front jack, I can't find a setting to change it with the way it's programmed. I plan on taking it to the shop in the morning and having them unlock it for me.
I'm not aware of a way to turn off Rx audio at the accessory connector via CPS or hardware. It is possible to disable the front speaker by unplugging it, but that still leaves the external speaker and flat audio outs plus the handset audio still live.
For the pinouts: batlabs.com
Search tags: The Professional or Waris Series of radios includes:
HT750 HT1250 HT1550 EX500 EX600 EX560 EX650 PR860
CDM750 CDM1250 CDM1550 HT1250LS+ CDM1550LS+ CDM1550LS
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If someone asks a question about one model,
the answer usually pertains to most, if not all.
They are all programmed with HVN9025 CPS.
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Would that not leave Accessory Pin 11 active or would it disable that also?
(I am still learning something new every day. Thank you for this tidbit.)
For the OP, the setting is found in the CPS at Radio Configuration ---> Accessory Configuration tab. Toward the bottom, just above the Ignition Sense is a check box labeled Handset. If checked, the radio behaves as described. If unchecked, the audio amp functions normally giving audio to the front speaker and Pins 1 and 16 on the Accessory Connector.
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No, has no affect on Filtered or Flat RX Audio. Pin 11 comes way before the audio/speaker amplifier.
Handset Audio is not checked, so I'm not sure what it is then. I'm starting to wonder if it's the internal speaker.
Project25_MASTR
Millennial Graying OBT Guy
Every post GM300 piece of technical literature I've read had simply referred to unplugging the internal speaker if using an external speaker.
I'd pop her open and see if the speaker is unplugged.
I'd pop her open and see if the speaker is unplugged.
Ding ding ding. I'm an idiot. Someone before him unhooked the speaker. Took it apart and plugged it back in, and it works fine. Lol
Just an FYI: many of the Moto products 'float' both sides of the external speaker output above ground to create a balanced output. Grounding either side of the output will let the magic smoke out.
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