In article , Scottm wrote:

You may have some reasonable success using a cable television balun. These
are available at radio shack or other parts supply houses and are very
cheap. I've played around with several of them. Most exhibit response
roll-off as you get down to 80 meters and below. Depending on what you want
to pick up, this may or may not be a problem. They are designed to match
300 ohms to 75 ohms. This should be close enough for SWL work. You will
have to purchase or make an adaptor to go from PL-259 to F.

I find they are pretty doubtful even on 40M, but they are great on six and
ten. You can pump ten watts through one without any real problem for
transmitting on 6M, too. Losses might be too much to do that on lower
bands.

75 ohm feedline is cheap, and of course a dipole cut for the band should
be a 75 ohm load to begin with.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."