Hi i have a midland cb (UK) and i want to fit a roger bleep kit to it what i need to know is which wires are the transmit and receive on the mic plug. the kit has got pin 2 has one of them but the guy in my electronic shop told me that that is the ground wire if i can tell him which is which he can fit the kit
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Here is the wire diagram for several common mics in relation to a 4 pin CB. Most recent 4 pin CB's such as Midland, Cobra, Connex, Uniden, etc can use 4 pin mics. The wiring is actually depending on the mic rather than the CB so long as the CB's are 4 pin as well. Once you go back to late 80's the 4 pin design was a little different. Anything new it is simpler.
1- Shield (Ground)
2- Yellow (Audio)
3- Red (Transmit)
4- White (Receive)
Astatic - 4 wire
static - 6 wire
1- Shield & Blue
Cobra CA Series
1- Shield & Black
Galaxy DC-521S - 4 wire
1- Shield & Black
Turner RK56 Road King
1- Shield & Red
Hi,my name is John. Start with checking your Squelch and RF GAIN wide open. Check that your antenna is grounded good and no metal objects are blocking it. Turn the MIC GAIN to MAX. Key the Mic, the needle should move or a light should come on. Try another MIC. if it doesnt. Let me know how it does, could be something internal that I can help you with.....hope this was very helpful...
If this is a stock cobra 148 gtl 40 channel am plus side band, they don't to my knowledge come with a built in r beep. Some roger beeps are instaleed through the transmit circuit on the mic, so if not in the know Don't try to fix it.Some microphones have a beep built in. I used to install beeps on these radios using the pa/cb switch to turn them on. also try the nb switch or the swr/rf switch.