Several years ago I ordered StennHeiser on-ear noise-cancelling
headphones for reducing noise on aircraft. This was not a luxury
purchase but following orders of my audiologist to protect my hearing
"always" when flying.
Previously, I had to remove hearing aids and insert foam ear-plugs,
which meant I was totally deaf for any in-flight conversation. The
StennHeiser's cost me about $150, and did reduce noise slightly, but
were very uncomfortable to wear with hearaids. Removing hearing aids
and I was back in my silent incommunicado world.
So I bought the $300 Bose QC2 (QC15 were not made back then) with
comfortable around-ear muff. This proved to be a good investment
later when I upgraded to Phonac OTR hearing aids which would
absolutely be incompatible with on the ear styles. I gave my
StennHeiser to my then-new wife who only used them a couple times.
I have not tried them in the noisy shack when I run the 8877 blower
(because I am running eme digital modes which are a text mode). Soon
I will be trying to run CW eme and the Bose may help a lot to
minimize blower noise so I can copy extreme weak signals.
BTW I have a pair of Sony MDR-V600 stereo headphones that have done
good service for copying weak signals for over a decade. They are
over the ear muffs which I must use with my OTR hearing aids.
Recently, I have been playing with the NR settings of the K3 to find
a good compromise with quieting vs distortion of sounds (F1-2 works
fairly well for me as any distorting of sound makes it harder to
understand speech). For weak CW cranking down the bandwidth to
100-Hz is the best vs NR. Definition: weak CW < -6 dB SNR...signal
strengths about -170 dBm.
73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com
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