[Elecraft] Question K3
Joe Subich, W4TV
lists at subich.com
Sun Aug 16 21:24:33 EDT 2009
Jack,
> It the radio was transmitting, the frequency will be the
> transmit frequency along with the appropriate indicators.
> If the radio is in split mode, the two frequencies probably
> won't be the same, but will all the info in the IF command,
> it should be very clear what is going on.
I've checked the IF; response and the reported frequency
(operating frequency) never changes ... it is always VFO A.
The split flag works as documented .. that's why I said the
software author should use the FB; data for transmit frequency
when the split flag was "on".
Believe me, I pay very close attention to frequency and mode
data from ALL rigs because we have to be able to decode it
correctly in microHAM Router.
73,
... Joe, W4TV
> -----Original Message-----
> From: Jack Brindle [mailto:jackbrindle at earthlink.net]
> Sent: Sunday, August 16, 2009 8:26 PM
> To: Elecraft List
> Cc: tom wylie; lists at subich.com
> Subject: Re: [Elecraft] Question K3
>
>
> You might want to recheck this response. When operating
> split, the IF
> response will have the split indicator set. It will return
> the current
> frequency at the time the response was sent. If the radio was in
> receive mode, it will indicate the receive frequency along with the
> VFO which was active, and an indicator saying this was
> receive. It the
> radio was transmitting, the frequency will be the transmit frequency
> along with the appropriate indicators. If the radio is in
> split mode,
> the two frequencies probably won't be the same, but will all
> the info
> in the IF command, it should be very clear what is going on.
>
> Logging programs usually just issue IF; commands unless they
> are given
> a reason to issue separate FA; or FB; commands. It is very
> easy for a
> program to miss the VFO B frequency for this reason. When IF
> response
> indicates split being active, it gives the logging program a
> very good
> reason to issue the separate FA and FB commands.
>
> So, the IF response _does_ change from transmit to receive, and the
> indicated frequency will change if the two VFOs are set to different
> frequencies and the K3 is in split mode.
>
> - Jack B, W6FB
>
> On Aug 16, 2009, at 5:12 PM, Joe Subich, W4TV wrote:
>
> >
> > Tom,
> >
> >> Is there any way to tell my logging software the frequency of VFOB?
> >
> > That's a question for the author of your software. The K3 will
> > indicate "split" (in the "IF" data) when transmitting on VFO B and
> > receiving on VFO A. The logging software should then record your
> > transmit frequency from the response to the FB; (VFO B
> freq) poll and
> > log the receive frequency from either the FA; (VFO A freq) or IF;
> > (Operating Frequency).
> >
> > In Elecraft's CAT implementation, the frequency reported in the IF;
> > data does not change between transmit and receive when in
> split mode.
> > I don't have access to a Kenwood rig for comparison.
> >
> > The fix lies entirely within your software.
> >
> > 73,
> >
> > ... Joe, W4TV
> >
> >
> >
> >
> >> -----Original Message-----
> >> From: elecraft-bounces at mailman.qth.net
> >> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of tom wylie
> >> Sent: Sunday, August 16, 2009 3:57 PM
> >> To: elecraft at mailman.qth.net
> >> Subject: [Elecraft] Question K3
> >>
> >>
> >> Through habit with my MP quite often in Contesting or
> pileup woking,
> >> I TX on my 2nd VFO and use the main VFO as a sort of RIT
> with all its
> >> filters etc.
> >>
> >> When I do this with the K3, the frequency being logged by
> my logging
> >> software (logger32) is ALWAYS the main VFO frequency,
> which obviously
> >> moves as I tune.
> >>
> >> Is there any way to tell my logging software the frequency of VFOB?
> >>
> >> Tom
> >> GM4FDM / GA4FDM
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>
> -Jack Brindle, W6FB
> ==============================================================
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