KX3-2M CW Drift
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I have two KX3's each with a 2M module. Both units have had the temp calibration done to them. When using CW, there is a noticeable drift in the received CW side tone. It has an unsable warble back and forth slowly +/- ~10 HZ or so. Is this the natural drift of the 2M unit I'm seeing here? If so I'm assuming that's as good as it gets.
Chris K6OZY ______________________________________________________________ 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 Message delivered to [hidden email] |
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This is within spec, though we're still looking at ways to further reduce it.
73, Wayne N6KR On Aug 17, 2014, at 4:20 AM, Chris Johnson <[hidden email]> wrote: > I have two KX3's each with a 2M module. Both units have had the temp calibration done to them. When using CW, there is a noticeable drift in the received CW side tone. It has an unsable warble back and forth slowly +/- ~10 HZ or so. Is this the natural drift of the 2M unit I'm seeing here? If so I'm assuming that's as good as it gets. > > Chris > K6OZY ______________________________________________________________ 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 Message delivered to [hidden email] |
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Mine drifts like crazy on 6 meters but I haven’t done the temp. comp. Will that help ? It’s not my main 6 meters radio (my K3 is) so it hasn’t been a big concern.
> On Aug 17, 2014, at 12:21 PM, Wayne Burdick <[hidden email]> wrote: > > This is within spec, though we're still looking at ways to further reduce it. > > 73, > Wayne > N6KR > > On Aug 17, 2014, at 4:20 AM, Chris Johnson <[hidden email]> wrote: > >> I have two KX3's each with a 2M module. Both units have had the temp calibration done to them. When using CW, there is a noticeable drift in the received CW side tone. It has an unsable warble back and forth slowly +/- ~10 HZ or so. Is this the natural drift of the 2M unit I'm seeing here? If so I'm assuming that's as good as it gets. >> >> Chris >> K6OZY > > > > ______________________________________________________________ > 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 > Message delivered to [hidden email] ______________________________________________________________ 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 Message delivered to [hidden email] |
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I strongly recommend doing the temperature compensation. On 6 meters this will leave you something like just +/- 3 Hz of "hunting."
73, Wayne N6KR On Aug 17, 2014, at 9:32 AM, Brian Hemmis <[hidden email]> wrote: > Mine drifts like crazy on 6 meters but I haven’t done the temp. comp. Will that help ? It’s not my main 6 meters radio (my K3 is) so it hasn’t been a big concern. > >> On Aug 17, 2014, at 12:21 PM, Wayne Burdick <[hidden email]> wrote: >> >> This is within spec, though we're still looking at ways to further reduce it. >> >> 73, >> Wayne >> N6KR >> >> On Aug 17, 2014, at 4:20 AM, Chris Johnson <[hidden email]> wrote: >> >>> I have two KX3's each with a 2M module. Both units have had the temp calibration done to them. When using CW, there is a noticeable drift in the received CW side tone. It has an unsable warble back and forth slowly +/- ~10 HZ or so. Is this the natural drift of the 2M unit I'm seeing here? If so I'm assuming that's as good as it gets. >>> >>> Chris >>> K6OZY >> >> >> >> ______________________________________________________________ >> 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 >> Message delivered to [hidden email] > ______________________________________________________________ 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 Message delivered to [hidden email] |
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In reply to this post by Ozy
Date: Sun, 17 Aug 2014 09:36:46 -0700
From: Wayne Burdick <[hidden email]> To: Brian Hemmis <[hidden email]> Cc: Elecraft Reflector <[hidden email]> Subject: Re: [Elecraft] KX3-2M CW Drift Message-ID: <[hidden email]> Content-Type: text/plain; charset=windows-1252 I strongly recommend doing the temperature compensation. On 6 meters this will leave you something like just +/- 3 Hz of "hunting." 73, Wayne N6KR ------------------ I have run tests on 6m at 5w simulating JT65 operation: Before doing the Temp Comp drift was up to 54-Hz After it was a couple Hz as Wayne stated. My test shows a big "bump" in the drift curves which I suspect is a bad temp point in the compensation process. I will repeat Temp Comp to see it this artifact disappears. http://www.kl7uw.com/KX3_FREQ_DRIFT_TABLE.pdf I have not tested at 2m. 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: [hidden email] ______________________________________________________________ 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 Message delivered to [hidden email] |
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