Yep, have seen this before.
Most likely the diodes in the SWR/ALC ckt have blown due to a nearby
lightning surge. These are D2 and D3 on the low pass filter board.
Look at the SWR and FWD positions on the Omni. Bet they are showing great
error.
73
Bob K4TAX
----- Original Message -----
From: "Robert" <bigmack@usa.net>
To: <tentec@contesting.com>
Sent: Thursday, January 24, 2002 12:40 AM
Subject: [TenTec] Hi SWR!?!?!
> My usually rock solid Omni VI+ is doing an auto shutoff when I put any
> power above about 50 watts into the Cantenna dummy load, and into the
> Thunderbird. I don't understand what is happening, I pulled all the coax,
> ran a short (5') piece of RG8 from the VI+ directly to the dummyload, and
> it still popped the shutoff.. I put the digital SWR meter back inline and
> gave it juice again, and, the swr meter show a peak of about 1.46:1 (high
> in my book) but I cant seem to get any output power without the power
> supply shutting down.. Anybody seen anything like this before? I am going
> to measure SWR on the tuner to see if I see anything strange, but, it is
> completely out of the loop right now...
>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> Robert McAdams
> KA5PPX - General Class
> Ten Tec Omni VI+ & Drake R8B
> HyGain SuperThunderbird Yagi @70'
> BC245XLT & highly mod-ed Pro-2006
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
>
|