[RFI] Hum in Bose QC2 headphones

[Gary Smith]

Though not a RFI issue, perhaps someone has the solution?

When I connect my Bose QC2 noise cancelling headphones to my K3 I get 
a hum which is only heard in the right headphone. It sounds like a 60 
cycle hum and touching anything metal in any way connceted to the 
radio resolves the problem completely. 


I've turned off all the different pieces of gear associated with the 
radio and I can get some reduction, just not an elimination of the 
buzz. If I were to say attach a wire to my wrist while at the 
station, it would be perfect. Of course that's not a good option for 
several reasons but it does resolve the issue. 


I remember this being an issue when I tried these with my laptop. The 
headset works great with my MP3 player with no hum. The hum is only 
when plugged in & when used strictly for noise cancelling, they work 
great. These headphones are awesome for CW and I would like to find a 
workable fix if possible.

Idears?

Thanks,

Gary
KA1J