CWT Calibration
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I have deduced that the bars in the CWT display are 25 Hz apart.
Does anyone know if that's right? WL ______________________________________________________________ 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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Hi Wilson,
> I have deduced that the bars in the CWT display are 25 Hz apart. > Does anyone know if that's right? Can you hear a 25 Hz pitch difference when it's hot on the short wave bands? If so, congratulations! You can admit it if you used a frequency counter. In my opinion CWT is a very good tool to get close to another station quickly. And no one realy no one has complained to me in a QSO so far that I was 25 Hz away from his transmitting frequency. 73/72 de Ingo, DK3RED - Don't forget: the fun is the power! www.qrp4fun.de - [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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That’s about where I set my IT!
Sent from my iPhone ...nr4c. bill > On Jul 16, 2020, at 6:22 PM, Ingo Meyer, DK3RED <[hidden email]> wrote: > > Hi Wilson, > > >> I have deduced that the bars in the CWT display are 25 Hz apart. >> Does anyone know if that's right? > > Can you hear a 25 Hz pitch difference when it's hot on the short wave bands? If so, congratulations! You can admit it if you used a frequency counter. > > In my opinion CWT is a very good tool to get close to another station quickly. And no one realy no one has complained to me in a QSO so far that I was 25 Hz away from his transmitting frequency. > > > 73/72 de Ingo, DK3RED - Don't forget: the fun is the power! > www.qrp4fun.de - [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] 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 Ingo Meyer, DK3RED-2
Looks like 25 Hz per step to me. I can hear 10 Hz delta at the beat note I
prefer <450 Hz. Wes N7WS On 7/16/2020 3:19 PM, Ingo Meyer, DK3RED wrote: > Hi Wilson, > > >> I have deduced that the bars in the CWT display are 25 Hz apart. >> Does anyone know if that's right? > > Can you hear a 25 Hz pitch difference when it's hot on the short wave bands? > If so, congratulations! You can admit it if you used a frequency counter. > > In my opinion CWT is a very good tool to get close to another station quickly. > And no one realy no one has complained to me in a QSO so far that I was 25 Hz > away from his transmitting frequency. > > > 73/72 de Ingo, DK3RED - Don't forget: the fun is the power! > www.qrp4fun.de - [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 Ingo Meyer, DK3RED-2
I use CWT to ensure that I do NOT zero beat the caller. I want my signal to
be at a tone noticeably above or below that of everyone else (very important to QRP op in a pileup). I haven't tried to quantify the hz/bar, I simply tune to around 5 ticks away and it seems to work well. Ken ke4rg -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Ingo Meyer, DK3RED Sent: Thursday, July 16, 2020 6:19 PM To: [hidden email] Subject: Re: [Elecraft] CWT Calibration Hi Wilson, > I have deduced that the bars in the CWT display are 25 Hz apart. > Does anyone know if that's right? Can you hear a 25 Hz pitch difference when it's hot on the short wave bands? If so, congratulations! You can admit it if you used a frequency counter. In my opinion CWT is a very good tool to get close to another station quickly. And no one realy no one has complained to me in a QSO so far that I was 25 Hz away from his transmitting frequency. 73/72 de Ingo, DK3RED - Don't forget: the fun is the power! www.qrp4fun.de - [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] ______________________________________________________________ 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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On the presumption of a worst case (for me) simplex receiver condition
for the other station, them filtered down to 50 Hz; I use XIT to not be zero beat (which used to be expected once upon a time) with no greater than 25 Hz offset (stay within that 50 Hz filter). Then one must only look (P3) at the station the DX is currently working to see if plus or minus 25 Hz should be used. Then watch patterns, does the other station move the receiver at all, switch plus for minus... is there a pattern? (Random, never is). Paying attention to details means easier success rates. ;-) If split, use the same observations, but turn off XIT and use the other VFO for TX (allowing you to hear the station being worked as well). EVERY operator has a pattern, humans are just wired for consistency. Find it, predict it, make that contact. 73, Rick NK7I dit dit On 7/16/2020 9:27 PM, [hidden email] wrote: > I use CWT to ensure that I do NOT zero beat the caller. I want my signal to > be at a tone noticeably above or below that of everyone else (very important > to QRP op in a pileup). I haven't tried to quantify the hz/bar, I simply > tune to around 5 ticks away and it seems to work well. > > Ken ke4rg > ______________________________________________________________ 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 Wilson Lamb
Not an operating question.
Didn't use a counter...was actually trying an old BC-221 frequency meter and wanted a quick indicator of drift. I made my estimate using the Pitch setting...changing pitch and retuning. Also moved signal and retuned to return CWT to middle, then read freq increment from display. WL ______________________________________________________________ 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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