Hello Tatsuro,
I have used David Clark Aviation headsets and attached the Heil HC-4
mike element to the boom.
The results are fantastic. I use these on Field Day as well and they
drown out the sound of the generator which is usually very loud and very
close.
A slightly more comfortable but less noise reduction aviation headset
is by Pilot Avionics. I have a commerative headset which I received as a
gift which might not be appropriate in Japan because it celebrates the
American P-51 which was used during the unpleasentness between our two
countries. I took this unit to a friend who was able to mold a new
mike holder, almost indistinguishable from the original, to hold the heil
HC-4. This headset works well when there are other conversations in the
room but does not drown out the generator noise. I prefer this headset
when flying because it permits me to hear the sound of the engine.
Good Luck in your Quest and 73 from Dan, KW4T
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