One thing I would add: I found RF getting into me O2 primarily through the
headphone connector and the CW paddles connector on the back panel.
Ferrites on each fixed the problem I had no problem with RF on the mic,
although the input to the W2IHY 8-Band did have a problem on 10 meters when
I cut the cable to the right length for the shack, which turned out to be
8'...a nice quarter-wave on 10! Duh! A ferrite fixed that, too.
I should by stock in Amidon....
Ron N6AHA
----- Original Message -----
From: "Dave Tipton" <dave@lodave.org>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>;
<k3ndm@verizon.net>
Sent: Monday, March 20, 2006 9:32 AM
Subject: Re: [TenTec] RF Getting back into Rig Problem
> Thanks to all for your suggestions. It seems that this is a fairly common
> issue. Here are the things I've gleaned.
>
> 1) Antenna, albeit resonant, being so close to the shack (20 feet
> overhead) may be apt to coupling to ground in the rain.
> 2) Toroids, Toroids, Toroids. At least 1 for each input to the rig,
> including on the power leads.
> 3) I need to install an earth ground, and potentially share it with my
> satellite TV's ground.
> 4) TenTec needs to seriously look at this issue, because it sounds like
> it's a VERY common one and maybe indicative of a design flaw.
>
> In regards to number 4, I still love this rig. I will not be giving it
> up any time soon. Just need to make some mods to the way things are set
> up.
>
> G <goofyham@highstream.net> wrote:
> I had a problem with my O1 & O2 with the TT 706 mic. Key stuck and RF in
> the
> audio. I found that when I pointed the beam right over the shack the
> problems started. I was able to eliminate almost all the problems by
> taking
> the 706 mic apart and using kitchen foil placing it around the little PC
> board pre amp and leaving a tab to put under one of the bottoming mounting
> screws, that grounded the foil. I first put black tape on the board to
> insulate it from the foil. Yes, the shack is grounded to a common 2, 8
> foot
> ground rods 5 feet apart.
> I also found last year when I had the key stuck problem it turned out to
> be
> the PTT button switch. It was bad. Had to bang on it to get back to
> receive.
> My 2 cents.
> George
>
>
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