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ICOM push to talk switch

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dale1rv6(at)comcast.net
Guest

Posted: Mon Jan 08, 2007 12:57 pm Post subject: ICOM push to talk switch

Greetings,

Can anyone tell me how to make a PTT switch for my handheld?



I just bought an Icom A24. It came with a headset adapter. I tried to make a

simple push to talk switch. That did not work, may have bungled it up. I

thought all I needed was a 1/8 inch plug connected to a spring button switch

to close 2 wires. It appeared to work. Seemed like the outlet for the PTT

was defective because if I put a slight pressure on the plug it made a

noise. So I did exploratory surgery, could not tell if outlet for PTT was

bad, molded rubber design blocked view of details.  But I did see 3 wires

(red, blue, white) going in and only expected 2. I amputated what was left

of PTT outlet. The female outlet for the mic is fine, and I have access to

those wires as the outlet is 2 piece closed with simple nut & bolt. Inside

are 3 wires; red, blue, white. Is it possible to wire up a PTT without too

much complexity?

Thanks,

Dale



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Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Mon Jan 08, 2007 3:44 pm Post subject: ICOM push to talk switch

All you need is the 1/8" jack that fits into the PTT ( push to talk input

jack) and a N.O. (Normally Open) momentary switch.  Parts could be

relatively expensive....  maybe $4.00 at the local electronics shop so save

up.   There is no polarity to worry about. If you use a shielded wire you

can use the shield to the ring side of the jack and the centre conductor to

the tip of the jack.



I have that system with the same radio in my plane... Works like a charm.



Noel



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_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

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