OK I've just checked this out and Vic is entirely correct.....boosting the cw tone frequencies certainly does cause a drop in signal when the dsp bandwidth crosses from 150 to 100Hz, NR or no NR. (and conversely cutting those frequencies leads to a sudden increase in signal at the crossing point - it's quite dramatic)
Glad I found this out before cqww but a little bemused as to why this 'feature' hasn't been better circulated; I've been using my K3 for a year now and have never seen mention of this. Thanks for the heads up Vic (I think that's the term...!) Stewart, GW0ETF Vic K2VCO wrote: > > GW0ETF wrote: > >> I find RX EQ settings have a significant effect on NR; I have boosted the >> 400-800Hz channels a few dB and that causes the cw note to appear to >> 'jump >> out at you' under NR along with reduction in the noise. Can't remember NR >> settings but it's not extreme and I aim for least echoing and character >> softening... > > This is not the best approach because of the following: when the 50 and > 100 Hz DSP filters are enabled the RX EQ is disabled (I forgot the > reason for this, but Lyle explained it to me). So the effect of > narrowing the bandwidth is that the signal suddenly drops several dB! > > If you want to use the RX EQ for this the best way to do it is to leave > the desired bands at 0 dB and *reduce* all others by the amount of > 'boost' that you prefer. > -- > 73, > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > -- View this message in context: http://n2.nabble.com/K3-NR-%28was-making-K3-RX-audio-like-K2%29-tp1556080p1558772.html Sent from the Elecraft mailing list archive at Nabble.com. _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
