K3 - NR and Rx equalisation

[GW0ETF]

For those who spend much time fretting about the
efficacy of the K3's Noise Reduction system
('worse/better/different settings' since last
update....) why not have a play with the Rx
equalisation settings?

On cw with a 700Hz offset I find changing the 800Hz
'channel' has a marked effect on received audio
without NR as you'd expect but the difference when the
NR is engaged can be quite remarkable. I can vary this
between seemingly attenuating the received audio
somewhat to increasing it substantially as if an extra
stage of AF amplification has been switched in.
Presumably a few dB extra at the sidetone frequency is
giving the NR more to work on....

I haven't tried phone but it obviously won't be so
simple; trial and error I guess.

73,

Stewart Rolfe, GW0ETF (K3 #145 with all the latest)

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[Gary, W7TEA]

Thanks Stewart--that does make quite a difference.

73, Gary W7TEA

GW0ETF wrote

For those who spend much time fretting about the
efficacy of the K3's Noise Reduction system
('worse/better/different settings' since last
update....) why not have a play with the Rx
equalisation settings?

On cw with a 700Hz offset I find changing the 800Hz
'channel' has a marked effect on received audio
without NR as you'd expect but the difference when the
NR is engaged can be quite remarkable. I can vary this
between seemingly attenuating the received audio
somewhat to increasing it substantially as if an extra
stage of AF amplification has been switched in.
Presumably a few dB extra at the sidetone frequency is
giving the NR more to work on....

I haven't tried phone but it obviously won't be so
simple; trial and error I guess.

73,

Stewart Rolfe, GW0ETF (K3 #145 with all the latest)

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