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

[Jim Brown <k9yc@audiosystemsgroup.com>]

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
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