Cessna 120-140 Association

Who has mounted a PTT switch on their yoke? Mine currently has a velcro switch on the yoke, but that won't work once I relocate the plugs to behind the seat. Trying to get some ideas on how to do it. I've seen one with a decent design, but haven't seen any others.

The one I've seen:

That setup looks snazy and I would suggest you pursue that idea if you have the means. However... the velcro mounted switch will still work. The PTT switch just pulls a line LOW from the radio. I wired mine in directly to the back of the headset plug behind my panel but it can just as easily be wired direct to the radio. Get a schematic of your radio and you will see the PTT wire in the pinout. You then need to remove the plug from your PTT cable and solder it to your wires. It's simply a normally open switch.

Joshua

Good idea, thanks Joshua, I hadn't thought of that. There should be two wires inside that cable, right? One goes to ground and one goes to the PTT pin on the radio?

Yes. Mind had four wires but it was just two separate normally open switches in the same housing. Use an ohm meter and see which wires are on the same switch then ignore two of the wires. One to ground, one to the PTT wire.

FYI, the tip of the mic jack is PTT so that will be easy to find.

Have you seen the product from one of our member. Pretty neat.
https://www.cessna120-140.org/Classified/talkclip.htm

5115 wrote: ↑Wed Feb 13, 2019 8:53 pm Have you seen the product from one of our member. Pretty neat.
https://www.cessna120-140.org/Classified/talkclip.htm

NICE! I guess I overlooked that one. I'll be going to a mini Ipad and 4flight shortly, that would make for a great mounting device If I can get it to work.

I also hard wired my PTT to the radio and use a velcro PTT.

I would like this better.

Hi,
I'm late to this discussion but I too am looking for a yoke mount PTT solution. I notice the link above is no more, but I'm curious what it was! Does anyone have a picture or description?


Thank you,
Mark

I'd also like to mount my PPT switches on the yoke. I've seen some with holes drilled in the control yoke shaft and the wire run inside the shaft. Is this an accepted method or a really bad idea? I would think it would be a very small hole, 1/8"or less. I would like to put a grommet in the holes, but have never seen a grommet that small. My radio came with the PPT switches already wired into the harness. No problem rewiring the switches. I've never seen the coiled wires used with the velcro attached switches sold by the foot. It appears that the switches in the photo have the coiled wire connection.

Steve A H

Not as pretty, but I ended up just coiling the switch around the yoke then tucking it into the panel. Works great and is clean. I cut the end of the switch and wired it directly to the radio.

Chewie/Mark,

Sorry...I probably shouldn't have jumped in and interfered with your request. We're kind of in the same situation.

Thanks, Tamer for the pic. I did some research on drilling a small hole in the shaft to run the wire inside...general conclusion is it probably isn't a good idea at best, and may require more than a log entry by the IA. I probably will do just what you did with the velcro ptt...wire it to the radio. I had it zip tied to the shaft and ran under the bottom of the panel to the portable intercom in my first 140.

Also, I did find some coiled wire at Summit Racing and a few other places. Most use 18 gauge wire.

Steve A H