Just a note to say that I find my unterminated 400' Beverage extremely
useful as a 160m Rx antenna and have never bothered with a terminated
Beverage. Over the last five days, the atmospheric noise here at sunrise
has been quite high and I estimate I would have worked less than 50% of the
European DX that I have if I did not have the Beverage.
My main Tx antenna is an inverted vee with the apex at 90'.
My Beverage is half on a neighbour's land and has to be virtually
invisible. Under these circumstances, I want the antenna to be as
inconspicuous as possible - I do not want a visible termination, let alone
a feeder on the neighbour's property.
For people in my situation, an unterminated Beverage is a VERY GOOD ANTENNA
INDEED!!!
Vy 73,
Steve, VK6VZ
Ernesto,
Unterminated Beverages are not worth the bother!
My suggestion would be to put a 9:1 transformer at each end of your
Beverage wire. Then install a separate coax cable from each end, back to
your shack.
Attach each cable to a cable tv "A/B" switch. It must be of the type that
automatically self terminates the unselected port. Many common, low cost
types
are available at Radio Shack in the US. This will produce a true properly
terminated,
bi-directional Beverage with one wire.
Just requires more coax.
Cheers, Dick, W1ZC Mason, NH
-----Original Message-----
From: owner-topband@contesting.com
[mailto:owner-topband@contesting.com]On Behalf Of LU5CW Ernesto
Grueneberg
Sent: Friday, December 03, 1999 4:42 PM
To: topband@contesting.com
Subject: Topband: terminated or not?
Hi Topbanders...
I have the following question: what, besides the lack of unidirectionality,
are the effects of not using a resistor at the end of a beverage?
I dont have the space to string multiple antennas, nor the will to build a
reversible system. For example, down here, EU is at 45 degrees, and the
pacific is LP to EU... So thinking about using just one for both directions,
but I dont want to compromise EU performance too much.
Any information very much appreciated. Thanks and Bye.
Ernesto LU5CW
mailto:lu5cw@geocities.com
http://pagina.de/lu5cw
http://badpower.com.ar
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