TenTec
[Top] [All Lists]

[TenTec] SWR meter glitch on Scout 555

To: tentec@contesting.com
Subject: [TenTec] SWR meter glitch on Scout 555
From: Casey <casey@tomochka.com>
Reply-to: casey@tomochka.com, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 03 Jan 2012 07:40:10 -0600
List-post: <mailto:tentec@contesting.com>
Hi All,

My Scout's meter is behaving strangely. Actually, I think the meter is OK, but the supporting circuitry is on the fritz. Perhaps someone here with more electronics experience than I could suggest some test procedures or likely components for failure?

- With the rig idle, regardless of whether the meter switch is swr or fwd the meter "twitches" upward half scale about every 5 to 30 seconds - Fwd power seems to indicate correctly, but if I'm using Tune as soon as I switch it off the needle rises to 3/4 scale then drops to zero. Doesn't seem to happen if I just key the rig.
- The needle deflects left (down) in SWR mode regardless of the true SWR.

Voltage at the meter is about .1V at idle, rising to about 2.5V on Fwd mode, 30W out. The coil measures about 2K ohms.

Ideas?

73,

Casey, TI2/NA7U

<Prev in Thread] Current Thread [Next in Thread>