[CQ-Contest] Impressive demonstration of one dB of signal strength impro

Jim Brown k9yc at audiosystemsgroup.com
Fri Aug 23 13:59:39 EDT 2019

On 8/23/2019 8:27 AM, Hans Brakob wrote:
> I have severe high-frequency hearing loss, but even before that loss I preferred a CW pitch of around 350-400cps (it was before they invented Hz).
> It was easier to separate from ambient noise, and the “difference percentage” also made it easier to distinguish from other nearby competing signals.

Yes, this is good advice, because the human ear-brain system works on 
percentage bandwidth. This provides greater separation between signals 
very close in frequency.

73, Jim K9YC

More information about the CQ-Contest mailing list