Copper Talk » Ask The Tech » Microphone Wiring » K40 processor mic wiring and thanks « Previous Next »

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Ind224
Posted on Sunday, December 28, 2003 - 12:00 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Got a K40 compressor mic and want to try it on a Cobra 2000...do I need to do the resistor/diode inside the radio? Looks like it uses the hot line to charge the cap?? I don't know the mic color code either..no info from American :(

Any experience with the on air audio/tone etc?

And thanks for fixing me on my D104...long story short the squeal is gone and it was the shield going to 2 instead of 4...DUH!!!!

Thanks and Happy New Year
Ind224
Stu
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Tech833
Posted on Friday, January 02, 2004 - 2:50 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Stu,

The cobra uses 8 volts on the switching line to key the radio. You may choose to not do the resitor/diode mod, since this is enough to charge the cap. However, every time you turn your radio on, it will key up for a second while the cap charges. Not a problem, this will not harm anything.
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Ind224
New member
Username: Ind224

Post Number: 9
Registered: 12-2003
Posted on Sunday, April 03, 2005 - 1:21 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)

Well, I never did hook this up to the Cobra but it kicks butt on my Grant XL.
No more 7v battery hassles with the +3 mobile I was using ... very loud and I never knew that it had a adjustment. Open window at 50MPH and all they hear is your voice.Try that with the D104 hand held!!!
I'd recommend this to anyone that wants a power mic and more gain than they will ever use.
Just wired it up like a normal mike to the Grant and did not have to diode or resistor as you said.
Thanks again,
Stu

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