Need help with microphone conversion cable

[AtLarge]

Morning all and Merry Christmas! Got time on my hands with the greatly reduced holiday activities so, I want to make a conversion cable that will let me use a Yaesu 8 pin microphone on a Cobra 4 pin radio.



Pin 8 Mic to Pin 2 (Mod / Audio)
Pin 7 Mic Gnd to Pin 1 Shield (Ground & Common / Shield-Com)
Pin 6 PTT to Pin 3 (TX)
Pin 5 PTT Gnd to Pin 4 (RX)

If someone(s) could take a moment to confirm this looks right before I wire it up I would appreciate it.

 

[camaro1]

pin 8 to pin 2
pin 7 to pin 1
pin 6 to pin 3
pin 5 to pin 1

this is only if your cobra radio has receive audio without the mic plugged in. some cobra radios need the rx pin grounded to receive

 

[AtLarge]

Dang it. Thanks for the reply. Didn't think of that. I just checked that and yes, the mic has to be plugged in for the audio to work on the radio.

In your list pin 4 on the on the cobra side isn't used or I need to take RX to ground on pin 1 along with 7?

 

[camaro1]

if your cobra needs the mic plugged in to receive then you will need to come up with a way to ground pin 4 when just receiving and un ground it when you go to transmitt, so with the mic you want to use its not a simple plug swap to make it work

id look for a different mic to use on the cobra

 

[AtLarge]

Bummer. I agree, too much trouble for this. I only have one other radio and it's a Uniden 980 SSB. It does work without the mic plugged in so, maybe this would be a better candidate?



I was given the Yaesu mic and was told it had high quality output which is why I wanted to try and use it. I don't have any problem with the stock Uniden mic but, have read it's mediocre.

I found this pinout on the interwebz for that model with the 6 pins. So,
Pin 8 Mic to pin 1 Modulation.
Pin 7 Mic Gnd to pin 5 Ground.
Pin 6 PTT to pin 3 TX.
Pin 5 PTT Gnd to pin 2 RX.

 

[Shadetree Mechanic]

Which yaesu mic is it? Just wondering if it has a dynamic element or condenser? If it is a condenser, it will need power from the radio to work. I have seen people use a battery box for them too.

 

[AtLarge]

Got it sorted. No idea what the model of the mic is. No label other than the Yasue name and looks to be for the FT-847 FT-920 FT-950. Camaro1 was very close but, it's actually:
Yaesu - Cobra
7 = 1
8 = 2
6 = 3
5 = 4

Works ok. Wouldn't say it's any better than what I had already but, at least I can use it as a back up. Hate to have it sitting around with nothing to connect it to. Thanks Guys!