Echomax 2000 and rf limited xtreme 2018

[smoke blower]

I have three cobra 2000 and the echomax 2000 and xtreme 2018 Mike will not work on either of my cobra 2000. When I key the Mike it has a weird squealing in the speaker. The problem isn't TalkBack it isn't in either radio the echomax 2000 doesnt have TalkBack the xtreme 2018 does but I turn it all the way down but neither will work on either cobra 2000

[Bombero]

Hey..

1) Try turning your mic gain down.

2) Inadequate ground on the antenna or case of the radio.

3) The radios ground wire location.

4) High antenna SWR normally caused from lack of ground.

5) Inadequate shielding in the mic cord.

6) Check for loose or broken solders/wires in the mic connector.

7) Make sure the mics are wired for the intended radio.

Bombero

[smoke blower]

Also both mikes work on a cobra 29 Ltd with know problem. I and using a 4pin to 5 pin connector to be able to use these mikes on the cobra 2000 is maybe the mikes need to be wired for 5 pin instead of using the 4 pin to 5 pin adaptor

-- Sunday, 28 June 2015, 17:43 PM --

I just tried turning the Mike gain down all the way and still same issue also my swrs are 1.2 I have a mfj anilizer and checked them

[MDYoungblood]

It sounds to me to be the 4pin to 5pin adapter is bad. I'm not sure about the Echomax but the 2018 should wire up to the cobra 2000 using a 5pin plug, try that, if the Echomax also a 6 wire mic cord it should wire up too, you'll have to figure out the pinout.

3's

Greg

[smoke blower]

Thanks I will try to put a 5 pin on each radio and see what happens do I need to use 5 wire hookup on both mikes or does only 4 wires hook up. The 4pin to 5 pin connector I bought brand new from **Non Sponsor**

(edited by MDY, removed **Non Sponsor**)

[MDYoungblood]

Yes the switching ground and the mic element ground need to be separate or the radio will still squeal.

3's

Greg

[smoke blower]

OK thanks GREG THAT must be the problem I don't have all 5 wires hooked up or really I have both grounds tied together for the 4 pin

[MDYoungblood]

I have heard several complaints about those adapters not working, I also got one for my Washington to try 4pin mics, ended up rewiring it to work.

3's

Greg

[smoke blower]

I will try to wire them for the cobra 2000 tomorrow and see what happens I just got to figure out what wire goes to what pin

[Stoneman]

I have a echo max, when I hook mine up to the 2000 I gotta drop the mic gain on the radio...Other then that all is good...