[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
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
> "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
> 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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