[TOEC] [CCF] SAC CW 2012 RESULTS PUBLISHED

[Mikael Rytky]

My point is that looking at the dial does-not-help on the accuracy level that is called for here. The dial WILL show 3510.000 but the TX-frequency may be off by this amount anyway. The dial just shows what you command the radio to do, not what it really does after 10 years of use.

How can we ever track down a 200 Hz fault if the operator only can report in 1 kHz resolution?

One more suggestion to the operator:

-Find out which RBNs are going to be used. Test your frequency accuracy against them before the contest to get a feeling of how much off you are.

Best regards,
Mikael SM6VJA


> From: jpe at student.uwasa.fi
> To: vfr_micke at msn.com; torvald at eurab.se; toec at contesting.com
> Date: Sun, 11 Nov 2012 11:29:44 +0200
> Subject: Re: [TOEC] [CCF] SAC CW 2012 RESULTS PUBLISHED
> 
> I guess most of us take a look at the frequency dial of the transmitter?
> But as you say, your rule 3 applies. :)
> 
> 73 Jari OH6BG
> 
> -----Original Message-----
> From: TOEC [mailto:toec-bounces at contesting.com] On Behalf Of Mikael Rytky
> Sent: Sunday, November 11, 2012 11:14 AM
> To: torvald at eurab.se; toec at contesting.com
> Subject: Re: [TOEC] [CCF] SAC CW 2012 RESULTS PUBLISHED
> 
> 
> So, nobody knows his/her accurate transmitter frequency and nobody can
> report what frequency we thougt we were using with better resolution than
> 1 kHz through the log?
> 
> If I'm 499 Hz off without knowing it (log will say I was spot on), I cant do
> anything about it. I just get a penalty afterwards....
> 
> Mikael SM6VJA
> 
> > Date: Sun, 11 Nov 2012 09:52:43 +0100
> > From: torvald at eurab.se
> > To: toec at contesting.com
> > Subject: Re: [TOEC] [CCF] SAC CW 2012 RESULTS PUBLISHED
> > 
> > Hi!
> > 
> > The Cabrillo frequency resolution is 1 kHz so 3509.800 is shown as 3510.
> > 
> > 73
> > Torvald SM2EZT
> > 
> > Mikael Rytky skrev 2012-11-11 09:43:
> > > Hi!
> > >
> > > Just a brief comment on SM6Z being 200 Hz off frequency limit.
> > >
> > > -Any
> > >   rig thats been in use for some years may have drifted 100Hz or more
> due
> > >   to ageing of the frequency reference and due to lack of regular 
> > > service. A drift of 100 Hz may even occur during the contest due to
> generated heat. Very few of us do have the possibility to check the
> Transmitter
> > >   frequency with such an accuracy. And even fewer will ever do so.
> > >
> > > So I'm pretty sure that SM6Z just has relied on the frequency readout of
> the tranciever. With CAT this may have been proved. But CAT wont come to all
> shacks. I think its a bit harsh reducing his result for that.
> > >
> > > A couple of suggestions, if 100 Hz slices really is the way to go:
> > >
> > > 1. SAC management should use dedicated RBN-receivers used for
> off-frequency-checking that are checked and calibrated regarding frequency
> accuracy. Today nobody knows the status of the RBN-data, any piece of junk
> can be behind the readings from RBN. Yes, many RBNs said the same thing, but
> still.
> > >
> > > 2. When 1. is implemented, a small reasonable deviation from 3510 should
> be allowed when reading RBN data due to the facts about our radios mentioned
> above.
> > >
> > > 3. When operating, keep a safe distance to 3510 if your not sure of the
> status of your radio.
> > >
> > > Best regards to all
> > > Mikael SM6VJA
> > >   		 	   		
> > > _______________________________________________
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> > > TOEC at contesting.com
> > > http://lists.contesting.com/mailman/listinfo/toec
> > >
> > >
> > 
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