K3 filter options
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I´m going to purchase another K3 unit and just wonder wich filters put on.
On the 1st i have: Main rx: 2.7 / 2.1 & 400hz for cw I use only for serious dx and contesting SSB, starting on CW and thinking about Digi modes. Anyone could tell me if i have better choices changing this filter setup? 73´s and tnx in advance PY2ADR / Z¨Y2C Adriano ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Ardriano,
I have the same set-up PLUS the 200Hz filter (for when the going gets really tough) for digging in a crowded contest band. 73 Arie PA3A Op 3-1-2011 20:16, Adriano schreef: > I´m going to purchase another K3 unit and just wonder wich filters put on. > > On the 1st i have: Main rx: 2.7 / 2.1& 400hz for cw > > I use only for serious dx and contesting SSB, starting on CW and thinking about Digi modes. > > Anyone could tell me if i have better choices changing this filter setup? > > 73´s and tnx in advance > > PY2ADR / Z¨Y2C > Adriano > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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In reply to this post by Adriano Perazio
>On the 1st i have: Main rx: 2.7 / 2.1 & 400hz for cw
Those are pretty good choices. I have settled on 2.7, 1.8, and 250. I "told" the K3 that the 1.8 was 2.1, so the 1.8 switches in at dsp bw = 2.1. Just normalize, then use only HI CUT until FL2 switches in. The 1.8 sounds great that way on SSB. You can go much lower with HI CUT if QRM is heavy. I "told" the K3 that the 250 was 400, so the 250 switches in at dsp bw = 400. The 250 works great for CW and RTTY. On RTTY, even with dsp bw = 300, you get a nice symmetrical FFT/waterfall, with no visible attenuation at the mark or space frequency. Dave Hachadorian, K6LL Yuma, AZ . ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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On 1/3/2011 12:27 PM, Dave Hachadorian wrote:
> I have settled on 2.7, 1.8, and 250. That would be my first choice as well. I started with 2.7, 1.8, and 400, then added 250. In a CW or RTTY contest, I wouldn't be without 400 or 250. I mostly run the IF between 400 and 200. A 1.8 roofer is simply too wide for CW, and there are times when 250 is too narrow. I have never heard a 2.1 roofer in a K3, so can't comment on that. 73, Jim ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Like Dave and Jim I would recommend 2.7/1.8/400/200 along with a 13 KHz (FM) filter if needed. I have tried the 1.5 KHz narrow SSB filter and find to too tight in nearly all conditions ... the 1.8 KHz will be used more often and the 1.5 provides very little added benefits in really crowded conditions. I find the 400 Hz filters (measured bandwidth 420 - 450 Hz) to be significantly better than the 500 Hz, 5 pole filters (measured 480 to 490 Hz) and the 200 Hz filter is a useful "narrow" filter when needed compared to the "250 Hz" filter which measures more than 350 Hz at the - 6dB points. With 2.8/1.8/400/200 Hz, my only wish is that there were three more slots or at least that I could use the 13 KHz filter for AM and ESSB transmit (without resorting to calling the 13 KHz filter a 6 KHz filter). 73, ... Joe, W4TV On 1/3/2011 3:51 PM, Jim Brown wrote: > On 1/3/2011 12:27 PM, Dave Hachadorian wrote: >> I have settled on 2.7, 1.8, and 250. > > That would be my first choice as well. I started with 2.7, 1.8, and > 400, then added 250. In a CW or RTTY contest, I wouldn't be without > 400 or 250. I mostly run the IF between 400 and 200. A 1.8 roofer is > simply too wide for CW, and there are times when 250 is too narrow. > > I have never heard a 2.1 roofer in a K3, so can't comment on that. > > 73, Jim > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Tnx everybody for the answers
I´ll for the 2.7 / 1.8 / 400 / 250hz 73´s PY2ADR -----Mensagem original----- De: Joe Subich, W4TV [mailto:[hidden email]] Enviada em: segunda-feira, 3 de janeiro de 2011 19:54 Para: [hidden email] Cc: Adriano Assunto: Re: [Elecraft] K3 filter options Like Dave and Jim I would recommend 2.7/1.8/400/200 along with a 13 KHz (FM) filter if needed. I have tried the 1.5 KHz narrow SSB filter and find to too tight in nearly all conditions ... the 1.8 KHz will be used more often and the 1.5 provides very little added benefits in really crowded conditions. I find the 400 Hz filters (measured bandwidth 420 - 450 Hz) to be significantly better than the 500 Hz, 5 pole filters (measured 480 to 490 Hz) and the 200 Hz filter is a useful "narrow" filter when needed compared to the "250 Hz" filter which measures more than 350 Hz at the - 6dB points. With 2.8/1.8/400/200 Hz, my only wish is that there were three more slots or at least that I could use the 13 KHz filter for AM and ESSB transmit (without resorting to calling the 13 KHz filter a 6 KHz filter). 73, ... Joe, W4TV On 1/3/2011 3:51 PM, Jim Brown wrote: > On 1/3/2011 12:27 PM, Dave Hachadorian wrote: >> I have settled on 2.7, 1.8, and 250. > > That would be my first choice as well. I started with 2.7, 1.8, and > 400, then added 250. In a CW or RTTY contest, I wouldn't be without > 400 or 250. I mostly run the IF between 400 and 200. A 1.8 roofer is > simply too wide for CW, and there are times when 250 is too narrow. > > I have never heard a 2.1 roofer in a K3, so can't comment on that. > > 73, Jim > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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