Thanks for this info, Danny.

It's much appreciated.

73 from Tom Behler: KB8TYJ

----- Original Message ----- 
From: "Danny Dyer" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, May 08, 2006 1:03 AM
Subject: TentecNoiseBridge


> Hi Tom and All, here's the essence of a friend's last summer's posts to me
> re
> this little noise bridge kit, still in production, from tentec.  Hope it
may
> help someone, DD
>
> "There's a noise bridge board kit on the Ten-Tec site:
>
> http://radio.tentec.com/kits/Accessory
>
> This is the description:
>
> ""Have you ever wondered what good one of those
> "R X Noise Bridges" could do for YOUR station setup?
> Are you baffled by your antenna tuner or "transmatch"?
>
> The 1051 is easy to build and super-easy to use. No
> "R-X" controls, calibration or calculations needed.
> Just connect it between your rig and antenna tuner,
> set receiver to desired operating frequency, and
> adjust the antenna tuner until the distinctive
> modulated pulses (NOT just straight "noise"!) drop
> to an easily-recognized "null" indicating that the
> tuner offers a 50-ohm match to your transceiver
> with NO on-the-air nervous experimenting with the
> tuner controls!""
>
> -----
>
> This is a board kit only and costs $19
> plus shipping.  From the size of the one 14-pin DIP
> chip I'd say the board is probably about 2.5" x 3.5"
> or so.  It would need to be mounted in some sort
> of enclosure, _And _Remember! Transmitting into receive noise bridges
> will destroy them, so unless Ten-Tec built in some
> sort of transmit bypass, we'll have to have some sort
> of T/R arrangement that cuts out the bridge when you
> transmit.  I've emailed Ten-Tec asking them about
> that..................Ten-Tec got back to me.  The board kit antenna
> bridge runs on anything from 9-12V at very low
> current.
> It does not have any transmit bypass capability so
> that has to be added.  A rotary switch could be rigged
> to do that.  Since the bridge produces a beeping
> on its own, that could be used as a reminder to
> switch it out BEFORE you transmit.  This means that once you are tuned,
you
> *must*
> remember each time to switch out the bridge before
> you transmit, or you'll fry it......"""
>