I have 3 roofing filters, 400Hz for CW and digital, 2.8kHz for SSB and 13kHz for listening to broadcast stations. But I should have selected 500Hz 5-pole and 2.7kHz 5-pole instead of 400Hz and 2.8kHz. I have very strong local power line noise, often S3 to S5 level. Steep filter like 8-pole filters sometimes internally worsen the noise level and cause less S/N to weak signals. When I need to use GRITTY for very weak DX RTTY signal, I have to widen the passband to more than 500Hz for better S/N.
73 de JH3SIF, Keith > 2015/09/28 23:57、dw <[email protected]> のメール： > > Hello gang, > Just ordered my first K3. > I haven't ordered any filters or accessories yet. > Want to wait and see what I really will need. > > I'd like to illicit your experience with the use of crystal filters for > CW. > What filter do you find you use the most and why? > I won't be using the K3 for contesting....just casual CW-only DXing and > occasional rag-chews. > Of late, I've really enjoyed getting on 40m and 30m at sunrise. > > Many thanks in advance > N1BBR :-] > > -- > [email protected] > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
