Date: Sun, 12 Apr 2015 15:24:27 -0400
From: "Joe Subich, W4TV" <lists@subich.com>
To: towertalk@contesting.com
Subject: Re: [TowerTalk] [Bulk] Re: antenna choices for K4XS
K7LXC and N0AX published two widely respected *scientific* studies
of tribander performance using validated measurement techniques to
directly compare the performance of the tested antennas against a
standard (dipole). These were field tests not some modeling exercise
that failes to capture real world losses in the antenna design.
In those tests, the Mosley antennas TA-33, PRO-57B and PRO-77 were
the *worst* performers in their respective (small and large tribader)
categories. The TA33 averaged LESS than 1 dB gain compared to a dipole
on 20 meters and LESS than 1.5 dB gain compared to a dipole on 10
meters. The PRO57B and PRO77 both averaged LESS than 1 dB gain
compared to a dipole on 20 meters and more than 1 dB *LESS* gain
compared to a dipole on 10 meters.
73,
... Joe, W4TV
## Oh this just cracks me right up ! Megabuck Mosley PRO 57 / 77
has essentially no gain on any band.
The kicker is.... the PRO-57/77 has LESS gain on 10m vs the paltry
TA-33 !!! WTF ?
## I mean..come on folks. LESS than 1 db gain on 20M.....vs a dipole for
the 57/77 .
57/77 has NEGATIVE GAIN on 10M.....by > 1 db.....vs a dipole.
## My conclusion is.... if you want some gain on 10M.... a dipole will do the
trick...and has
>1db more gain than the megabuck mosely.
## 55/77 has LESS than 1db gain on 20M....vs a dipole.
## No wonder a 2 el F12 will wipe the floor with a mosley..and so will a
gotham quad.
What the mosley will do is provide some FB and FS and that’s about it.
Jim VE7RF
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