Taking the headphones off and laying them on the desk seems to boost the
SNR of a CW signal significantly. Helps with closely spaced QRM too.
It's been known to RO's since the "olden days."
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 1/12/2018 2:13 AM, Petr, OK1RP/M0SIS wrote:
Hi all,
there is an interesting article about the improving perceived loudness by
6dB and that of the background noise by 3dB, resulting in a net 3dB
improvement in the signal's SNR on CW...
https://plus.google.com/100312042524727617304/posts/gtNciqaFQk5
BTW: be careful as there are a little mistakes in frequencies difference for
fourth chord etc.
1) CQ Jan 18, page 17, Fig.1. (b): 697Hz-523Hz=174Hz (almost fourth chord)
and NOT 80Hz as described
2) CQ Jan 18, page 18, Tab.1: eg. E4-F4=19.6Hz NOT 19.55Hz,
F#/Gb-F5=41.533Hz NOT 42.53Hz etc.
Is there somebody who configured his K3 for that and tested it already?
73 - Petr, OK1RP
-----
http://ok1rp.blogspot.com
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