[Lowfer] ARGO Cal.

[DTX]

The ARGO calibration is to an audio signal, so if you have a CW offset of
700hz, set the rx to the RF frequency and then expect to see a 700.000hz
line on the screen.  If you see 700.100 then you can tell ARGO to allow for
that ,1hz but here is how you can go wrong<G>.

The "sense" of the signal, i.e. if you tune the rx up 10hz, does the audio
go up or down 10hz?  Against WWV or whatever you are using for the reference
signal.   And then after getting that all working in the right direction,
you may find that when you bandswitch from 5Mhz down to the bottom range,
there may be a mixer inversion that will make the offset tracking "wrong."
Which is why those of us who can get WWVL well enough to use the 60Khz
carrier do it that way.  Are you in an area where you can receive and use a
100Khz loran-c station?

Gary WA6DTX
----- Original Message -----
From: "Peter Barick" <A20PJB1@wpo.cso.niu.edu>
To: <lowfer@mailman.qth.net>
Sent: Tuesday, December 17, 2002 2:26 PM
Subject: [Lowfer] ARGO Cal.


> Re: ARGO Use And Rx Calibration
>
> I'm unfamiliar with ARGO but have collected past emails on ARGO topics.
> These and the installation guide are of help, but one point is still
> unclear and concerns "rx calibration." It's been mentioned only on this
> list and references a 60kHz signal for calibration. Out of my bandwidth,
> as my rx is a Drake R8 and coverage starts at 100kHz. So what to do?
>
> Can I use WWV at, say, 5.0mHz and would I then use ARGO to check for
> ... what?
>
> I see that ARGO's Setup has an offset factor, how do I determine if it
> is needed? and how much? and for which rx mode, ie, usb, lsb, cw?
>
> Thanks in advance,
> Peter
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