Losing radio contact

[86M20J]

ZERO corrosion under the antenna or anywhere else on my plane. Getting a new coax and antenna right now. Coax is being provided by the shop as they didn’t install a new coax when they put the 650 in.  Either way, they are test flying it Friday and problem should be gone. Thanks for all the info. 

[bradp]

On 4/8/2021 at 9:58 PM, 86M20J said:

Turns out I need a new antenna. 28 days is the fastest I can get one. Anyone have one lying around they want to sell??

What are you looking for.  I have a used 7 antenna but no guarantees on that one.  

[bradp]

Fwiw my radio issues in the past have been solved by a multimeter ring out between the coax shield and the conductor - and/or- 

A little digital SWR meter 

 

[Will.iam]

On 1/6/2021 at 9:39 PM, Mike A said:

This may be overly simple, but have they checked that the unit is tight and secure in the housing?  My 430W was acting similar about 6 months into having it installed and a quarter turn with an allen wrench eliminated the issue. 

Is this allen screw the mounting screws to the rack? 

[Mike A]

Just now, Will.iam said:

Is this allen screw the mounting screws to the rack? 

Yes.