Topband: Repost: 160m balun

deuhs at earthlink.net deuhs at earthlink.net
Sun Dec 21 09:12:23 EST 2003


Hello,

With all the talk about installing chokes, I built one yesterday with 50 feet of RG8 flex wraped around (single turn)
a 4 inch PVC pipe (total about 15 inches).  

Installed it last night...

One question(?) Do I have to suspend the choke off the ground or is OK lying next to my vertical?

Greg
K0PJ/9
Hy-tower vert with MK-160 add-on, 4000 feet of radials.

-----Original Message-----
From: Bob Tellefsen <n6wg at earthlink.net>
Sent: Dec 20, 2003 11:29 PM
To: Topband Reflector <Topband at contesting.com>
Subject: Topband: Repost:  160m balun

Bill Tippett says this message went astray somehow,
so here it is again.

Tom
For the air-wound balun on my 160m vertical,
I used a plastic laundry detergent tub.  It
is slightly tapered, so each turn is slightly
different from the next, but nothing significant.
I wound mine with RG58 and spaced the turns one
conductor diameter apart.  That's about 1/4 inch
spacing.  I think I must have around 12 turns or
so on the tub.  I hold each turn in place with black
plastic tie wraps.  It works very well, so far as I
can tell.  Totally cheap too :-)  It should work ok
with larger size coax as well, since the bending
radius is fairly large.

73, Bob N6WG
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