[Elecraft] Copying CW and Pitch

[Dave Cole]

Yup, I have a notch at the old sweep frequency as well...  :)

73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources

On 3/14/21 4:13 PM, Brian D wrote:
> Iworked for years on 405 line TV transmitters. I had a notch of at least
> 40dB at 10.125khz. I was surprised how quickly it disappeared when 405 line
> TV closed down, to be replaced by a rolloff at 16kHz.
> 
> I now roll off much lower, and keep moving my default cw sidetone as it
> seems to produce a notch after a few contests, I'm currently at 650Hz but
> will try 700 again soon.
> 
> 
> 
> Dave Cole <dave at nk7z.net> wrote:
> 
>>> One of the most common forms of hearing loss starts at the high
>>> frequencies and works its way down with age, but that's far from
>>> universal. When one or more notches develop at certain frequencies, it's
>>> often the result of noise exposure at work.
>>>
> 
>