Hi Jim,
Never heard about the cable not being for outdoor use.
It is essential to fill the body of the plugs with silicone grease to
prevent the accumulation of condensed water.
Connectors may not be left unprotected from the weather even for one day.
I use that stuff across my rotators together with a few CF12-50 cables.
Main feed lines are LCF78-50 or RG218.
In total 13 such cables are turned on my 4 towers, 8x LCF12-50, 5x FSJ4-50.
73
Peter, DJ7WW
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim
Thomson
Sent: Samstag, 16. Januar 2016 14:57
To: towertalk@contesting.com
Subject: [TowerTalk] Andrew FSJ4-50 issues
A buddy is having issues with his Andrew FSJ4-50 flexible coax. It's
being used on a rotating tower.
He used FSJ4-50 from each yagi to the tower, then spliced ( via a male to
female 7-16 din) into
more FSJ4-50 heading down the tower. At the bottom of the rotating tower
is the remote switch box.
On the 40m coax connector, at the remote switch box, there is water coming
out of it ! The splice
was encased in heat shrink, with the glue glop inside. Also at each
balun.
We think the cable coming down the tower is toast. Is this FSJ4-50
intended to be used outdoors ??
I looked at some old postings from 2006, and it appears that FSJ4-50 was to
be used indoors only, for
jumpers etc. The other postings indicated it did not have any UV protection
on the outer jacket.
I THINK I also read somewhere a long time ago that FSJ4-50 was prone to
water ingress.
Does anybody know the real story on this stuff ? It can be replaced with
the rigid andrew 1/2
inch regular heliax. It doesn't have to flex for this application....on a
rotating tower. At the base
of the tower, where the remote switch box is, there is a single, flexible
piece of coax, used
for rotating the tower, like 213-U...then the 213-U is spliced into more
(normal rigid) 1/2 inch heliax,
and off to the shack area.
The concern here is... if FSJ4-50 is pone to water ingress, then he may well
be in for more problems,
since all the coax runs down the tower are also FSJ4-50
Thanks in advance.... Jim VE7RF
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