Hi Clive I had the same good experience with the 1.8kHz Inrad filter in the old FT-1000MP, so I moved that filter across to the K3 (with a change in mounting board)... and have not regretted it.
Because the filter has such a restricted bandwidth, I configured the filter to switch in at a WIDTH setting of 1.9kHz to avoid the bandwidth being further narrowed by the DSP as well. The SHIFT setting is also very critical for the best voice intelligibility. My particular filter requires a fc setting of either 1.25 or 1.30kHz, and anything outside of that range sounds very noticeably worse. Once the 1.8kHz filter has been carefully set up, and its settings stored in the NORM II SSB memory for easy recall, the SHIFT and WIDTH controls hardly ever need to be touched... which is exactly what the SSB contester requires. 73 from Ian GM3SEK >-----Original Message----- >From: [email protected] [mailto:elecraft- >[email protected]] On Behalf Of Clive Lorton >Sent: 31 March 2014 10:58 >To: [email protected] >Subject: Re: [Elecraft] K3 in WPX SSB with 2.7 roofer > > >On 31 Mar 2014, at 06:47, Al Lorona <[email protected]> wrote: > >> For years I have heard folks state that 1.8 kHz is mandatory for SSB >contesting... but I have never understood how one could put up with this >narrow bandwidth for long. I need more information hitting my ears and am >perfectly happy with letting the famous 'ear-brain' filter extract the >maximum from that information. > >Morning all, First post here from a new K3 owner. > >I have used a Inrad 1.8 kHz filter in my old Icom 756 and just loved it. I've >just built K3 8098 and find the 1.8kHz filter much more uncomfortable to >listen to in normal use. It is different beast. But I expect it will come into its >own when digging that weak signal out of the QRM! > >At the moment I'm just enjoying learning to drive it.... > >Clive G8POC > >______________________________________________________________ >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]
