[TenTec] Scout

[Ed Worst]

Hi Shawn,

I just turned my Scout on and indeed there is a spurious signal at 14.332MHz
with no antenna on the radio.  The signal is much lower in level than you
indicate in your posting, though.  From the sound of it, it sounds like it
may be from the counter.  That could be radiating, or perhaps conducting a
signal into a point in the radio.  It would take careful measurements and
calculations to determine exactly why this is happening.  I guess I'd poke
around with some bypass caps or some insulated shielding to see if any of it
makes a difference.  You could also send Ten-Tec an email - they may have
some suggestions.

As for the grounding problem in the car, the first thing that comes to mind
is that the Saturn is half plastic / half metal.  That's less shielding from
the antenna on the outside to the radio on the inside.  It would be
interesting to try your radio in someone else's car to see if there's a
difference.

Sounds like you're going to have some fun solving those two puzzles.  Good
luck.

73,
ed - k9ew

----- Original Message -----
From: "Shawn Upton" <kb1ckt@yahoo.com>
To: <tentec@mailman.qth.net>
Sent: Friday, October 03, 2003 7:11 AM
Subject: [TenTec] Scout


> I've noticed an S5 signal at or about 14.332MHz on my
> Scout.  Is this normal?  I had the radio in my car,
> car off or on, I can hear it (2000 Saturn SL, no abs).
>  I'm wondering what it is--I haven't had a chance to
> check it out on a home supply yet.
>
> Also:  when I put it into the car, it had nothing but
> RF feedback on 20m.  I tried to put a 2.5' piece of
> RG8 braid to a metal ground point in the car; I had an
> FT240 core around the antenna coax (two turns) and no
> luck.  Antenna was both an 8.5' whip and a hamstick
> (tried at seperate times).  Antenna mount was a 3
> magnet magmount.  I could probably use a wider piece
> of grounding braid--but should it be that touchy to
> RF?  I mean, I have a friend who runs his Scout on a
> cig lighter, and while his antenna was a ball mount
> type, he didn't have a RF ground of any--and his radio
> worked.  Mine appears not to work w/o a 1/4 wave
> radial attached directly to the radio.
>
> Shawn KB1CKT
>
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