yes it is a cm300, it has no sound at all, could they have disabled it inside?

I got a cm300 with no plug in the back to activate internal speaker, does anyone have a pinout for it?

Does the cm200 and the cm300 use the same rss or do they require different versions?

Does anyone have mark watkins email ? He's an old friend that helped me a great deal to get started in the radio business, kinda lost track of him in the last year or so and would like to chat with him again.
>>>>>>>Gary

Does the cm300 require a different cable than the m1225? to go from rib to radio.

Was wondering about the GP68 portables, are they a good radio? are they programmed via the front panel? the price seems awfully cheap.

Was wondering about the GP68 portables, are they a good radio? are they programmed via the front panel? the price seems awfully cheap.

Thanks, thats what i needed to know, also does anyone know of a source to buy motorola vhf radios used online?

I need a power supply for a quick charger and was wondering what the output voltage should be? i thought it was 12 vdc but the plug is too small for the charger...