Speaking of SGC's 2002. Last night I had a CW QSO with a fellow who was
operating one from batteries. He had 3 carriers, one big and 2 weak ones
about 300khz above and below his main carrier. He put the rig back on the
DC supply but no change. I've heard one other 2020 sound like this. You
might want to take a listen on another receiver and check this out.
N4LQ
-----Original Message-----
From: "Ron McConnell" <rcmcc@earthlink.net>
To: <tentec@contesting.com>, "Ten-Tec Argo V/516" <ten-
tec516@yahoogroups.com>, "HFPack" <hfpack@yahoogroups.com>, "QRP-L" <qrp-
l@lehigh.edu>, "QRPp-I" <QRPp-I@yahoogroups.com>
To: <tentec@contesting.com>
Date: Fri, 1 Nov 2002 12:53:18 -0500
Subject: [TenTec] Argonaut V/516 Supply Voltage sensitivity. >=12.0Vdc
>
> "...12.1 v at which point the signal has a
> pronounced chirp on CW."
>
> "...audio becomes distorted also..."
>
> And finally,
> Ten-Tec says, "...12V is the lower limit..."
>
> (sigh)
>
> I still plan to get an Argonaut V/516,
> but I am a bit disappointed in this outcome.
> My plans are to shift the SGC SG-2020
> to full time portable/mobile use
> because of its rugged, brick-like construction
> and use the Argonaut V for my desk rig.
>
> My main complaint with the SG-2020 is that
> it is not small (12Vdc, 7AH) gel-cell battery
> friendly, even at qrp xmit levels.
> Any momentary slip below 12.0Vdc results
> in distortion. Now it seems the Argonaut V
> has the same characteristics. I use a
> 17AH battery for home that I keep on float,
> so hopefully the Argo V will be happy.
> I expected that with all the DSP horsepower
> that 4AH batteries or smaller probably
> would not be realistic, but 7AH or even larger?.
>
> For the SG-2020, I ended up using one of
> W4RRY's battery boosters to keep the voltage
> at 13.8Vdc. http://www.fastq.com/~w4rry/
> When I get around to using the Argo V portable,
> it looks like it will be better off with a boost, too.
>
> 73,
>
> Ron McConnell
> w2iol
>
>
>
>
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