[TowerTalk] Strange happening with 10 Meter Beam

john at kk9a.com john at kk9a.com
Wed Oct 28 15:39:39 EDT 2015


That is pretty strange.  It would have been interesting to check the
resistance between the DE halves with an ohm meter before swapping it out.
 Anyway it is good to hear that it is working now!

GL
John KK9A

To:	towertalk at contesting.com
Subject:	Re: [TowerTalk] Strange happening with 10 Meter Beam
From:	Herbert Schoenbohm <herbert.schoenbohm at gmail.com>
Date:	Wed, 28 Oct 2015 13:11:51 -0400


John, The the problem was neither VSWR (very low) or Beam Direction (any
direction) even on the ground no signals were apparent except very very
weak ones were heard on ten in any direction. It appeared that a dummy
load was at the end of the feed line. The beam is one the ground at 10
feet and the insulator cup were changed and the beta rods installed.
Immediately the signals started to come in and the rig came to life on 10
meters. It appears the cups were acting more like a resistive element and
took out the signals but provided a good load for VSWR measurements. I
installed the beta rods which the manual said are 36 inches long....but no
where in the book does it give me the distance from the Driven Element for
the shorting bar on the boom and I looked at every page....... The manual
just refers to it as "L" but does not say the distance of "L".....Do you
have nay idea?.\


Herb, KV4FZ

On 10/28/2015 12:39 PM, john at kk9a.com wrote:
Low SWR is not a bad thing. My homebrew 6el 10m beams have 1.1:1 SWR 28-29
MHz and they work very well.  Does the SWR increase outside the 10m band?
Is the antenna pointing the correct direction?

John KK9A



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