Data A default frequency center
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It is *1.50 by default.
As I often use JT65 and no other data mode, how to set it to *1.28 by default ?? 72 from FO land |
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Here's the K3 OM's comment on the PITCH control:
PITCH CW sidetone PITCH, PSK center pitch, FSK / AFSK MARK tone and shift (pg. 31), or FM tone setup (pg. 29) For DATA A, the manual doesn't really state how to shift Fc. Matt Zilmer Consultant - Product Management Dept. Magellan Navigation / MiTAC Digital Corp. Tel: (909) 394-6052 Cell: (909) 730-6552 In status quo voluntas non sufficit -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of F5LCI Sent: Monday, September 24, 2012 1:49 PM To: [hidden email] Subject: [Elecraft] Data A default frequency center It is *1.50 by default. As I often use JT65 and no other data mode, how to set it to *1.28 by default ?? 72 from FO land -- View this message in context: http://elecraft.365791.n2.nabble.com/Data-A-default-frequency-center-tp7563234.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ 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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Thank you, I had tried PITCH without result for DATA A I feel less alone... 72 Le Mon, 24 Sep 2012 22:52:28 -0000, Matthew Zilmer <[hidden email]> a écrit: > Here's the K3 OM's comment on the PITCH control: > > PITCH > CW sidetone PITCH, > PSK center pitch, > FSK / AFSK MARK tone and > shift (pg. 31), or FM tone setup (pg. 29) > > For DATA A, the manual doesn't really state how to shift Fc. > > Matt Zilmer > Consultant - Product Management Dept. > Magellan Navigation / MiTAC Digital Corp. > Tel: (909) 394-6052 > Cell: (909) 730-6552 > In status quo voluntas non sufficit > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of F5LCI > Sent: Monday, September 24, 2012 1:49 PM > To: [hidden email] > Subject: [Elecraft] Data A default frequency center > > It is *1.50 by default. > As I often use JT65 and no other data mode, how to set it to *1.28 by > default ?? > > 72 from FO land > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Data-A-default-frequency-center-tp7563234.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > 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 |
Re: Data A default frequency center
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Use SHIFT to change Fc. The default can;t be changed, but you can use
the I and II selectivity setups. 73, Lyle KK7P >> For DATA A, the manual doesn't really state how to shift Fc. ______________________________________________________________ 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 F5LCI
Well, technically, DATA A doesn't need a way to change Fc. Since the K3 doesn't actually process anything in DATA A, it's all up to whatever external sound you're using.
There was some yammering about allowing a shift of Fc for DATA A, for example to 1.28 KHz, a while ago. This was for JT65A which has an offset center from the nominal 1.5 KHz used in DATA A. I don't recall the results of that email thread, because it was several years ago. No - whatever issues you find, you're not alone on this reflector. 73, Matt Zilmer Consultant - Product Management Dept. Magellan Navigation / MiTAC Digital Corp. Tel: (909) 394-6052 Cell: (909) 730-6552 In status quo voluntas non sufficit -----Original Message----- From: [hidden email] [mailto:[hidden email]] Sent: Monday, September 24, 2012 4:16 PM To: [hidden email]; Matthew Zilmer Subject: Re: [Elecraft] Data A default frequency center Thank you, I had tried PITCH without result for DATA A I feel less alone... 72 Le Mon, 24 Sep 2012 22:52:28 -0000, Matthew Zilmer <[hidden email]> a écrit: > Here's the K3 OM's comment on the PITCH control: > > PITCH > CW sidetone PITCH, > PSK center pitch, > FSK / AFSK MARK tone and > shift (pg. 31), or FM tone setup (pg. 29) > > For DATA A, the manual doesn't really state how to shift Fc. > > Matt Zilmer > Consultant - Product Management Dept. > Magellan Navigation / MiTAC Digital Corp. > Tel: (909) 394-6052 > Cell: (909) 730-6552 > In status quo voluntas non sufficit > > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of F5LCI > Sent: Monday, September 24, 2012 1:49 PM > To: [hidden email] > Subject: [Elecraft] Data A default frequency center > > It is *1.50 by default. > As I often use JT65 and no other data mode, how to set it to *1.28 by > default ?? > > 72 from FO land > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/Data-A-default-frequency-center-t > p7563234.html Sent from the Elecraft mailing list archive at > Nabble.com. > ______________________________________________________________ > 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 |
Re: Data A default frequency center
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Even with JT65A (JT65-HF) one does not want Fc=1.26. The JT65 decoder looks for "sync" tones at 1.26 +/- 1 KHz but since the actual JT65 signal extends up about 250 Hz from the sync tone, the filter should pass *at least* 250 - 2500 Hz (L0=0.25, HI=2.50 or BW=2.20, FC=1.38). Since "NOR" in DATA A is FC=1.50, BW=0.40, the easiest way to handle a different "default" is to save modified values as NORM1 or NORM2 and recall the appropriate one rather than <NOR>. 73, ... Joe, W4TV On 9/25/2012 10:56 AM, Matthew Zilmer wrote: > Well, technically, DATA A doesn't need a way to change Fc. Since the K3 doesn't actually process anything in DATA A, it's all up to whatever external sound you're using. > > There was some yammering about allowing a shift of Fc for DATA A, for example to 1.28 KHz, a while ago. This was for JT65A which has an offset center from the nominal 1.5 KHz used in DATA A. I don't recall the results of that email thread, because it was several years ago. > > No - whatever issues you find, you're not alone on this reflector. > > 73, > > Matt Zilmer > Consultant - Product Management Dept. > Magellan Navigation / MiTAC Digital Corp. > Tel: (909) 394-6052 > Cell: (909) 730-6552 > In status quo voluntas non sufficit > > > -----Original Message----- > From: [hidden email] [mailto:[hidden email]] > Sent: Monday, September 24, 2012 4:16 PM > To: [hidden email]; Matthew Zilmer > Subject: Re: [Elecraft] Data A default frequency center > > > Thank you, > I had tried PITCH without result for DATA A I feel less alone... > 72 > > Le Mon, 24 Sep 2012 22:52:28 -0000, Matthew Zilmer <[hidden email]> a écrit: > >> Here's the K3 OM's comment on the PITCH control: >> >> PITCH >> CW sidetone PITCH, >> PSK center pitch, >> FSK / AFSK MARK tone and >> shift (pg. 31), or FM tone setup (pg. 29) >> >> For DATA A, the manual doesn't really state how to shift Fc. >> >> Matt Zilmer >> Consultant - Product Management Dept. >> Magellan Navigation / MiTAC Digital Corp. >> Tel: (909) 394-6052 >> Cell: (909) 730-6552 >> In status quo voluntas non sufficit >> >> >> -----Original Message----- >> From: [hidden email] >> [mailto:[hidden email]] On Behalf Of F5LCI >> Sent: Monday, September 24, 2012 1:49 PM >> To: [hidden email] >> Subject: [Elecraft] Data A default frequency center >> >> It is *1.50 by default. >> As I often use JT65 and no other data mode, how to set it to *1.28 by >> default ?? >> >> 72 from FO land >> >> >> >> -- >> View this message in context: >> http://elecraft.365791.n2.nabble.com/Data-A-default-frequency-center-t >> p7563234.html Sent from the Elecraft mailing list archive at >> Nabble.com. >> ______________________________________________________________ >> 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 > 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 mzilmer
Hi Matt, I agree completely. Apart from reporting a (too much) "exact" JT65 frequency, a very minimal advantage of FC 1.28 is that you see the right "band" and can narrow the filter ...provided the QSO is on the center of the JT65 waterfall. (I was feeling alone, only on this topic !) Regards & 72 from FO land. Le Tue, 25 Sep 2012 14:56:30 -0000, Matthew Zilmer <[hidden email]> a écrit: > Well, technically, DATA A doesn't need a way to change Fc. Since the K3 > doesn't actually process anything in DATA A, it's all up to whatever > external sound you're using. > > There was some yammering about allowing a shift of Fc for DATA A, for > example to 1.28 KHz, a while ago. This was for JT65A which has an > offset center from the nominal 1.5 KHz used in DATA A. I don't recall > the results of that email thread, because it was several years ago. > > No - whatever issues you find, you're not alone on this reflector. > > 73, > > Matt Zilmer > Consultant - Product Management Dept. > Magellan Navigation / MiTAC Digital Corp. > Tel: (909) 394-6052 > Cell: (909) 730-6552 > In status quo voluntas non sufficit > > > -----Original Message----- > From: [hidden email] [mailto:[hidden email]] > Sent: Monday, September 24, 2012 4:16 PM > To: [hidden email]; Matthew Zilmer > Subject: Re: [Elecraft] Data A default frequency center > > > Thank you, > I had tried PITCH without result for DATA A I feel less alone... > 72 > > Le Mon, 24 Sep 2012 22:52:28 -0000, Matthew Zilmer > <[hidden email]> a écrit: > >> Here's the K3 OM's comment on the PITCH control: >> >> PITCH >> CW sidetone PITCH, >> PSK center pitch, >> FSK / AFSK MARK tone and >> shift (pg. 31), or FM tone setup (pg. 29) >> >> For DATA A, the manual doesn't really state how to shift Fc. >> >> Matt Zilmer >> Consultant - Product Management Dept. >> Magellan Navigation / MiTAC Digital Corp. >> Tel: (909) 394-6052 >> Cell: (909) 730-6552 >> In status quo voluntas non sufficit >> >> >> -----Original Message----- >> From: [hidden email] >> [mailto:[hidden email]] On Behalf Of F5LCI >> Sent: Monday, September 24, 2012 1:49 PM >> To: [hidden email] >> Subject: [Elecraft] Data A default frequency center >> >> It is *1.50 by default. >> As I often use JT65 and no other data mode, how to set it to *1.28 by >> default ?? >> >> 72 from FO land >> >> >> >> -- >> View this message in context: >> http://elecraft.365791.n2.nabble.com/Data-A-default-frequency-center-t >> p7563234.html Sent from the Elecraft mailing list archive at >> Nabble.com. >> ______________________________________________________________ >> 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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The suppressed carrier frequency (what the K3 display shows) is actually
what is expected as the ORG used in JT65. When you observe the Reverse Beacon, it will list an offset, + or - from that ORG frequency. That means, in a sense that the 'correct' way to describe a JT65-HF QSO would be the ORG frequency, and if you wanted more accuracy, an offset to that ORG. In other words, no other manipulation of the display frequency is required. Any offset applied to the ORG or displayed rig frequency, in an attempt to more accurately state where the tones really are, would mess up the users of the Reverse Beacon. (Now having said that, it is always fun to see the wildly different offsets listed when a signal is copied by a few dozen stations -- I can always tell who is running a K3 or other rig with decent master oscillator because the offset frequencies will be the same within a Hertz or two.) 73, Bob, WB4SON ______________________________________________________________ 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
73, Bob, WB4SON
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