Buck wrote:

I am considering making an HF antenna out of 300 ohm TV twinlead. I
am thinking of making an OCF or CF dipole and using an MFJ-941 tuner
to tune it to the various ham bands. I will be using an IC-706 MKII
which transmits from 5 to 100 watts output.

Here are a few questions:

How much power can the twin-lead handle?
Radio shack has both the old thin twin-lead as well as the low-loss
foam version. I realize that the low-loss will be better for the feed
line portion, does it make a difference in the antenna portion?

Since the antenna tuner has a balun in it, I won't be using a balun.
The purpose of the antenna will be to keep it in the car and to set it
up for portable operations on occasions. When practical to do so, I
may leave one of these antennas in locations where I visit frequently
and wish to operate.

Thank you for your comments.


If you make a folded dipole to match your 300 ohm feedline impedance
then you should use the low-loss. If you're just going to short the
wires together and treat it as one fat wire then use any old thing.

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Tim Wescott
Wescott Design Services
http://www.wescottdesign.com