Jim has helped me in a number of ways, both RXEQ and getting good TX
audio from my K3.
I'm pretty much deaf above 1200 Hz, lots of sudden, very loud noises in
my bulletproof and immortal period 50 years ago. Jim's RXEQ suggestion
gave me about 30 dB of higher frequency boost ... turn down the lows,
raise the highs, and turn up the AF Gain. I generally run mine around
12 o'clock, much above that and distortion gets really bad. I don't
know if that's in my headset [Heil ProSet from Elecraft], or clipping in
the audio amp. 30 dB is only about a third of my hearing loss above
1200 Hz, but it does still make a BIG difference.
I found my "sweet spot" for pitch just by experimentation with the pitch
control. On sideband ... which you won't find me on much, very hard
copy ... at DSP BW around 2.1 or a little less, I shift it down. For
RTTY, I use the 915 Hz setting in the K3 and MMTTY.
Many years ago, while a high school senior with a part-time relief op
job at a coastal marine station, the OT's taught me that when the noise
on the Holy Frequency was really bad, lay the cans on the desk.
Somehow, this lowers the noise and not the signal. The VA has given me
some very good hearing aids, they don'w work under the headphones, but
using them with the headphones on the desk does often improve the SNR of
very weak signals.
Good luck,
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org
On 2/5/2015 5:36 PM, Jim Brown wrote:
On Thu,2/5/2015 4:45 PM, Don Wilhelm wrote:
Your real answer depends on your particular hearing loss, so no one
else can say what your particular "desired pitch" can be.
Yes. There are several types of hearing loss. That which comes with old
age is a loss of high frequencies; what you appear to have is likely the
result of excessive noise exposure, and can be anything from a big
"hole" in the middle of frequency response to massive loss of highs to
ringing.
If your loss is mostly highs, it can be PARTIALLY compensated using
RXEQ. Simply turn down the lower bands and turn up the higher ones. If
it's the ringing that drives you nuts, try setting the CW RX pitch
lower. Play with it and see what works for you. You can also do these
things in combination.
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