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pr4oo speaker mic
Posted: Wed Oct 03, 2007 4:02 pm
by kd5wfy
does anyone know the pin out used for motorola's pr400 handheld radios. i have a headset that i would like to use with this radio. any infomation on this subject would be greatful. thanks
brian
newalla fire dept
Re: pr4oo speaker mic
Posted: Wed Oct 10, 2007 8:53 am
by Bat2way
The colors are referencing a HMN9030 type Motorola speaker-mic cord wires.
Large pin | Tip=Speaker (black) Sleeve=Speaker (red) (Balanced audio output)
Small pin | Tip=Mic hi (white) Sleeve=Ground (blue)
Make sure your headset has an electret-type of mic (needs voltage) or a pre-amp if not.