I miss Earl too...he always told me I was loud...HE was always loud, and
usually working somebody i couldn't hear...he also did some great work with
Flags, early on...
73, w5xz, dan
--- On Fri, 5/31/13, Carl wrote:
From: Carl
Subject: Re: Topband: PHASING SHUNT FED TOWERS
To: "
- Original Message -
From: "Jon Zaimes AA1K"
To: "160"
Sent: Friday, May 31, 2013 4:31 AM
Subject: Re: Topband: PHASING SHUNT FED TOWERS
On 5/31/2013 12:43 AM, Tree wrote:
K6SE was the first guy I saw doing this - with much shorter towers than
mine.
Som
Phasing towers and even detuning structures in AM broadcast radio
systems is not without a multitude of variables which as Tom points out
require so much testing, a good calibrate FSM with reliable check
points, cable measurement with expensive equipment, on and on. not
taking these steps may
I have a system with two gamma matched towers that works pretty well. I
did all I could to make them appear to be similar. The gamma dimensions
and capacitance are identical - and I used a loading wire on top of one of
them - making it longer and longer until the match was similar.>>>
Results
On 5/31/2013 12:43 AM, Tree wrote:
K6SE was the first guy I saw doing this - with much shorter towers than
mine.
Somewhere in my files I have a copy of a four-page letter Earl sent to
K2UU describing in detail the K6SE phased towers -- one of the few
multielement transmit arrays in use on t
I have a system with two gamma matched towers that works pretty well. I
did all I could to make them appear to be similar. The gamma dimensions
and capacitance are identical - and I used a loading wire on top of one of
them - making it longer and longer until the match was similar.
After that -
I did try it with two shunt fed towers on 160 meters 1/4 apart using a
Wilkinson power divider and had little success >>>
Because of mutual coupling, antennas with unidirectional patterns have
grossly dissimilar impedances at each element. The elements, provided they
have reasonable loss, hav
I did try it with two shunt fed towers on 160 meters 1/4 apart using a
Wilkinson power divider and had little success and then read in ON4UN’s Lowband
book that phasing shunt fed tower was very difficult if possible at all. You
might take a look at his book and see if those comments are still
