[Elecraft] Noise Canceling Headsets

[Paul Christensen]

Anyone know of a noise-canceling (NC) boom mic headset (NC in the 
headphones, not mic)?  I see plenty of combination headsets where the NC is 
in the mic path, but not the headphones.   Bose and Sennheiser have 
combination NC headsets designed for the aviation industry -- and the NC 
function is in the mic + headphone circuits, but pricing is nearly as high 
as the altitude for which they're designed.

Or, perhaps a clamp-on mic boom with electret mic element?  This would allow 
for attaching a mic boom on to the NC headphones of one's choice.  The mic 
cabling could be run in parallel with, or inserted into, the coiling of 
headphone cable.

Paul, W9AC