Humminbird Model DC 25 R. The mic key is stuck in the send position. I disconnected the mic wire but the radio still does not recieve. Does the mic have to be connected to recieve signal? If so where can Iget a mic?
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The CM300 is programmable using Motorola propietary software, cable and RIB (radio interface box). The software is primarily available to Motorola dealers. The easiest way to have the radio programmed is to take or send your mobile radio to a dealer. Typically programming is around $25 for this unit.
If you provide the model number, it would be possible to give you more information about your radio. It can be VHF or UHF, 25, 40 or 45 watt. You could also google the model number. The model number begins with AAM50...
Yes as long as the features and pin configuration of the connectors are the same. In its simplest form, the microphone/cable would only be carrying 3 wires; transmit audio, PTT to TX and ground. Of course others would have for the different switches, keys and other features (if present in your model).
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
It is not typical but neither is there a problem with the radio.
Transmit Power output is loosely dependent on the:
1. Frequency or channel you are transmitting. Normally, Marine Band VHF are calibrated for max (25 in your radio) at Ch16 or 156.800Mhz;
2. If the SWR of the antenna is not a flat 1.0, power tends to go down;
3. After some time, the TX side of the radio needs to be re-calibrated;
4. Power Supply - some radios will push max output only when powered with 13.8 and tends to go down when used with 12 volts.
Hope this be of some help/idea. Post back should you need additional information.
Good luck and kind regards.