Hi Danny,
Thanks for this, it is the most cost effective solution yet. I'll need to
find assistance in building the kit and putting it in an enclosure (doable
with some asking and patience).
73
Ron Miller
-----Original Message-----
From: For blind ham radio operators [mailto:[log in to unmask]]
On Behalf Of Dan B Dyer Jr,/Danny
Sent: Saturday, June 16, 2012 9:26 PM
To: [log in to unmask]
Subject: Tentec $19 noise bridge kit
Hi all, I tried to answer Ron Millers' post to one of these lists, =
yesterday evening, about a noise bridge, but I'm not at all sure it =
reached him. So, figuring more than one of you might be interested, here's
the essence of a friends' two notes sent to me several years = back.
I called Tentec last evening, June 15, 2012, but found them closed at = the
time. For some reason, I couldn't get the link to work either, But = this
will give you something to go on. =20 Danny Dyer, Wb4idu.
"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......"""
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