Starting to get sick of radios

No fix the mikes. Should take a few minutes each. Take apart the plug, usually a wire is broken there. If you ground the mike pin for RX you will have wide open TB in TX, meaning out of control squeal. You would have to turn the mike gain so low just to talk that no one would hear you.

 

You are welcome. A long time ago in a galaxy far far away switch contacts were plated with hard non oxidizing metals such as Rhodium, Platinum, and others. Since the parts have started coming from China they are essentially pot metal. New Cobras sitting in their boxes on the ship over here will arrive with the CA-73 mike contacts actually black from oxidation and corrosion in the moist salty air. Ditto for the new noise canceling mikes assembled with parts made in China. Even new you should clean the switch before use with a lubricating cleaner. While you can get this at Rat Shack paying eleven dollars for a 4 oz can sucks. Not to mention their formula contains too much oil and too little cleaner. Never use WD40 for this there is an acidic component to their formula. A better choice is a 13 oz can of Puretronics 5000 for $6.95 from All Electronics.

http://www.allelectronics.com/make-a-store/item/PTR-5000/CONTACT-CLEANER-AND-LUBRICANT-13-0Z/1.html

Even with the $7 charge to mail it to you it is still a better deal than burning gas to drive to Rat Shack and the formula is superior. Helps to search the site for a few more items you can use to make the shipping a better deal, so long as you keep to the $7 minimum. Some of your mikes may be similar switch problems and some could be the broken wire.

Do not use this stuff for cleaning controls, a non lubricating hexane is better.

http://www.allelectronics.com/make-a-store/item/PTR-3500/CONTACT-CLEANER-13.25-OZ/1.html

Many Wallmarts carry the same thing for $4 in the CRC line. For any switches however you need to use the lubricating cleaner.

 

So all that big talk out of Channel Jumper and it turned out he was just a punk? roflmao

 

Kind of jumps right out at you don't it! I think we are beginning to see who we need to go to ask questions about problems. Hope he has the time to continue to help out.

 

Glad you found your problem. FYI, that cap is used as a DC Blocker. It helps keep Circuit Ground separate from Chassis Ground. You'll find a bunch of them if you look.