[Hammarlund] TV Baluns again

[Glen Zook]

I contacted my amateur radio friend who was employed
in the cable TV industry for over 30 years about why
TV baluns are supposed to make it down to at least 5
MHz (and generally make it all the way down to the AM
broadcast band).  Here is his reply:

"Because there are so-called "sub-band" 6 MHz wide
channels beginning at 5 MHz and going upwards ...
these channels are typically used for reverse feeds
like from city council meets, high school athletics,
etc ... then at the headend they are processed from
sub-band RF to audio/video and then placed back onto
the cable system at RF via a modulator."

Thus I am still convinced that a TV balun definitely
is the "way to go" for an inexpensive method of
matching the coaxial fed antennas to the balanced
antenna terminals of many of the boat anchor
receivers.  Yes, you can build or buy a balun that is
designed for the amateur bands and it may, or may not,
work better than the TV baluns.  Also, you can build
or buy an antenna tuner (just hook up a commercial
antenna tuner "backwards") that will probably do as
good or even better job of matching the receiver to
the antenna.  But, considering the work required
and/or the cost, using a TV balun does make a lot of
sense since they do work!

Glen, K9STH

=====
Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

__________________________________
Do you Yahoo!?
Yahoo! Finance: Get your refund fast by filing online.
http://taxes.yahoo.com/filing.html