[Lowfer] new guy troubles Argo...

[DTX]

Assuming you can receive WWV at 5,10 or 15MHz in AM mode, one of the best
(easiest ?) ways to calibrate Argo is with the very precise 500 and 600
hertz tones that alternate _most_ of the hour.  You can check their web site
for a listing of which minutes have which tone.  A few minutes are blank,
some have a voice message and the first minute of each hour is 440 hetz, the
A above middle C.  Since it is AM, the accuracy and stability of the
receiver have no effect on the frequency of the tone recovered.

(www.boulder.nist.gov and go to the services provided area)

I recently got a new computer with the sound integrated on the
motherboard....have to put 612.5 into the Argo calibration window when
listening to the 600hz tone.

Gary WA6DTX
----- Original Message -----
From: "Eric Smith" <eric@willow.nutstreet.net>
To: <lowfer@mailman.qth.net>
Sent: Monday, November 10, 2003 2:22 PM
Subject: RE: [Lowfer] new guy troubles Argo...


> > What mode should my receiver be in? CW? RTTY? AM? LSB? USB?
> >
> > What Hertz level should I be looking at on Argo? 1000 Hz?
>
> Hi, Bow,
>
> This reply will probably draw laughter from the rest of the crowd, because
> the only receiver I have stable enough to do QRSS work is my home stero
> system tuned to AM.  It was with this system and my DDS exciter (acting as
> a BFO) that I made the KFI capture.  That is the ONLY narrow-band capture
> I've ever made.
>
> But since no one else has answered your question, let me try:
>
> Argo displays the frequency of the audio received.  This can be
> callibrated with a known source and the Argo display can be tweaked to
> then show whatever you want ... some make it show "0 Hz" on the center
> frequency they want to watch, and others make it show something like "300"
> in the center when monitoring 185.300 and center on that frequency.  Then,
> a signal at 301 on the screen is at 185.301 kHz.
>
> With Argo 134 (the version I have) ... and this probably comes with other
> versions ... is the file ArgoTuning.txt.  Look in the directory (or FOLDER
> ... I keep forgetting .. WINDOWS!) where you unzipped argo and you should
> see this file.  I see that it is actually a response from Lyle to an email
> sent by me last February on "rx setup" and is a very detailed explanation
> of what I've just touched on here.  Tells you how to do it.
>
> Please let me know if you don't have this file and I'll get it to you.
>
> Others who know better, please expand on this for us, and tell me where
> (and if) I'm wrong, because I'm about to start doing more listening, too.
>
> Bow and I appreciate it.
>
> Thanks,
> Eric
>
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