Want to Wire a Turner RK 70 mic to a Uniden Grant XL. Having problems. New at this.

[DJaHaM]

So I was wondering.. if anyone would be so kind as to show me the wiring diagrams to both the Turner RK 70 Microphone and the Uniden Grant XL Cb Radio. Or if anyone knows what 4 wires from the mic goes to what number of the 5 pin female connector would be a life saver and a time saver 2. Thanks so much... The Newbie ; Andy.

Cheers Mates!!!

 

[Handy Andy]

Since you didn't say RK70 or it's J suffix, can only presume BASIC so here goes...

Your Turner Mic;

Has a 4 POLE - DOUBLE THROW switch - spring loaded plunger.

Three of these Poles are used, One for Audio Out and SPECIAL CONDITION,
One uses 3 Traces for Common mode Switching RX to TX with Common - but is NOT GROUNDED.

The Mic leaves you access and has 4 "holes" or traces -
Trace 1 = Audio
Trace 2 = Transmit
Trace 3 = Common
Trace 4 = Receive

HOWEVER, your Grant XL or Cobra 148GTL - use 5 wires.

BOARD ground on Radio is SEPARATE from Shield (Audio) Ground - Treat this accordingly.

Traces 2, 3 and 4 - don't need anything special - Radio provides the "RETURN PATH" for grounding the SWITCHING mode - Receive to Transmit.

Due to this Mics' sensitivity and Ground / Shielding requirements - SOLDER SHIELD of Mic Cord to LOCATION 2 in diagram. It is the Battery Negative Terminal - also your Audio Common - you'll need that for the Grant / Cobra 5-pin radio.

So Grant - Cobra is as Follows...

Pin 1 - Audio
Pin 2 - SHIELD
Pin 3 - Speaker Ground (Uses Common Switching AT Radio)
Pin 4 - COMMON SWITCHING
Pin 5 - Transmit

Audio wire is your wire wrapped in Shield - ok? - Goes to - Pin 1 on Mic Plug!

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See attached for review...