[TowerTalk] sloper : grounded coax

[Julio Peralta]

I had an RFI problem that I fought for years. I have been able to track
it to the shield of the feed line going to  my Carolina Windom wire
antenna. It was conducting RF into the shack when other antennas were
being used. I tried both a Radioworks and MFJ line Isolator and they
both worked to eliminate the RFI.

Some have said that neither isolator meets the specs the companies
advertise but they work for me.

Julio, W4HY

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Federico Zanini
IK3UMT
Sent: Sunday, December 04, 2005 6:32 PM
To: towertalk at contesting.com
Subject: [TowerTalk] sloper : grounded coax


Hi All
Just a question :
I own a 40-80-160 alpha-delta DX-A double half sloper (coax braid
connected to the top of tower). It works fine but i note some rfi
problem as coax braid offer a good path to RF into my shack (a coax
choke was made at feedpoint). Tower is grounded, so, is it useful to
connect coax braid to tower on lowest possible point in order to offer
an alternative "low resistance" path to rf current flowing down ???? How
much useful a device like radioworks "line insulator" is for my problem
?? Thank you very much. 73 de federico ik3umt

_______________________________________________

See: http://www.mscomputer.com  for "Self Supporting Towers", "Wireless
Weather Stations", and lot's more.  Call Toll Free, 1-800-333-9041 with
any questions and ask for Sherman, W2FLA.

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