Thank god for Bose

[PilotMedic865]

Found out the A20 with my issued low impedance mic does not work well with a GA adapter, as it causes an unbearable humming noise, especially at night with the lights on. So, rather than buy another headset I bought the GA cord from Bose for the same price and 5 minutes later my problems are fixed. Do the opposite when I need to swap back to mil configuration.


Sent from my iPad using Tapatalk

 

[RyanB]

They are certainly a premium brand.

 

[Let'sgoflying!]

I wonder, electronically, what the problem was?

 

[PilotMedic865]

Idk. Probably a combination of 5ohms being boosted to 50ohms for the mic to work and less than stellar avionics in a trainer.

 

[IK04]

When we got our civilian Gentex HGU-56 helmets, the entire harness had to be changed to the military harness to work on the CH-47F digital ICS. The bad humming and feedback was unbearable...

Impedance matching is critical!