[Antennaware] russian vertical

Martin Kratoska marcom@centrum.cz
Wed, 28 Aug 2002 19:29:47 +0200


It should be probably the "UW4HW" vertical which is a biconical monopole fed
via 75 ohm coax. Nothing to do with ladder lines, antenna tuners or such
silly things. Tried to get more info because the original which I get
translated by an Ukrainian was too brief. It would be rather interesting to
have full description with more details.

73 Martin, OK1RR
ok1rr@qsl.net
http://www.qsl.net/ok1rr
----------------------------------------
The difference between theory and practice in theory
is less than the difference between theory and practice in practice.


----- Original Message -----
From: "Jonathan Williams" <jonvwill@iastate.edu>
To: <antennaware@contesting.com>
Sent: Wednesday, August 28, 2002 6:58 PM
Subject: Re: [Antennaware] russian vertical


> For feeding such an antenna, you might try open wire ladder line or 450
Ohm
> "window wire".  You'll need a balanced-line tuner to make it work, but the
> losses will be manageable for reasonably short feed line runs.
>
> We've had good luck using almost this exact same antenna at portable Field
> Day sites.
>
> While I can't comment on the number of radials for the "Russian Vertical",
> ours uses twenty 12-foot radials (with good mid-Iowa soil for the ground
> plane).  Obviously, for a more permanent installation, one could use 40 or
> more radials 20 feet long each (.4 lambda at the lowest frequency) or
longer.
>
> Jonathan
> N0YM
>
> At 05:33 PM Sunday 8/25/2002, you wrote:
> >Listening on Hf, most of russian om use a vertical antenna.
> >The vertical, should be 11Mt tall, and works from 10 to 40mt.
> >What i want know is the way of fedding and how many radials they use.
> >
> >
> >Thanks,
> >73 de ik7ytt Andy
> >
>
>
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