WARNING! WARNING! Dr. Robinson! (Remember "Lost in Space"_
The MFJ is VERY susceptable to false (High, or Infinite) readings due to
nearby sources of RF. I have a BC station on 630khz 1 mile away that
makes the MFJ useless for real antenna measurements....
Good Luck!, 73, DX de Pat, AA6EG/N6IJ email@example.com
On Tue, 13 May 1997, Dale Martin wrote:
> Thanks to all who sent me comments and suggestions. The general
> consensus for N-type connectors (and that is, indeed, what we found
> at the base of the antenna, this afternoon) is to seal them, in spite of
> their 'weatherproof' rating.
> Since it has been discussed a couple of times before and I was dumb
> enough to not have saved the thread away properly, I will not reprise the
> responses on the reflector....if you want to know what the specific
> comments were, I will be happy to respond directly with a summary.
> By the way, the antenna is a G7-144, mounted on a 5 ft mast atop the
> penthouse (equipment/mechanical room) roof of a 9 story building at
> Johnson Space Center. It's been up there for at least 10 years.
> On our arrival there, I saw immediately that the connector N-type
> and was unsealed. Fearing the worst, I removed the feed from the
> antenna and, to my delight, found the female section nice and clean
> and shiny; same with the male connector. I put the end on a dummy
> load and we ran swr checks from the repeater -- flat! Nothing
> reflected. I put my MFJ-259 on the antenna and found infinity SWR.
> We are replacing the antenna as soon as the new one (another
> G7-144) gets here. We will also seal the connector at the antenna
> Dale Martin, KG5U
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