Telex Pt-300 Push-To-Talk Switch

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Part# 11-03861
MFR Model# 63966000


Attaches to any control wheel. Simple installation, no tools required. Simply wrap hook and pile strap around control wheel. Provides instant communications when used with any headset or Telex flexible boom mike. With 6 ft. coiled cord, jack and plug.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


Great product and wired in nicely to my Cessna 172M. Good Electrical schematic

Charles L Verified Purchase


December 21, 2021

I bought this Telex PT-300 push to talk switch to replace an identical one that I had used for 32 years. This product is obviously well made to have lasted that long in the blistering heat of Phoenix.

R. H
February 24, 2017

Did not work out of the box with my intercom system (PS Engineering PM3000), with button up behaved as though intercom had infinite squelch but did work as expected with button depressed. Proper functioning required small wiring modification. Otherwise 5 stars.

Matthew T
August 4, 2020

I gave it a four stars because its replacing one that got me chewed out by ATC (it stuck during transmission). Works excellent but when they go bad youre screwed if youre back up handheld isnt charged (what idiot brings an uncharged handheld and no charger to a plane...guess who!). I trained with these decades ago so Ill keep using them until I buy a plane with a yoke mounted PTT.

January 16, 2020

I like the product but the first time I used it it tends to stick. I would have hoped it would perform better for a few years

Jim T
July 16, 2018

Unfortunately the one I bought was not made to the quality of the older one it was replacing. Wire gauge was smaller and It would get stuck in the open position, which is unacceptable and unsafe in aviation. I would have to unstick it by pulling out on the button. not reliable enough for me.

December 4, 2018

Had to send back, I had no side tone with this PTT.

December 21, 2020

It worked for a bit. Then the buttons were sticking. For the cost of it compared to others, I do not recommend it.

November 15, 2020

I started out using Telex +30yrs as a student pilot. Never had a problem. Now that Im an aircraft owner Ive had two that would stick after a flights. Stuck mike in the pattern is not only embarrassing but could have the tower telling you to call them after landing....NOT GOOD!

January 10, 2021


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Can this be used to key up Yaesu Fta-750l with headset adapter?

Yes, this is compatible with the Yaesu headset adapter.

Q: Will this work with my intercom or do I need to modify it like the David Clark PTT?

Yes, this PTT provides instant communications when used with any headset or Telex flexible boom mike.

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