On Wed, 19 Nov 2008 18:14:27 -0500, Tam wrote:
"Rich Grise" wrote in message
news
My current UHF antenna is a 14" Radio Shack clip lead clipped from the
center of my coax to the venetian blind. I have to hand-adjust it for
the channel, weather conditions, phase of the moon, etc. I can do this
because I can _see_ an indication of signal strength.

Well, with this new Fascist "No More Free TV" crap, I'm gonna need a
real UHF antenna. My budget is exceedingly limited, but I have a supply
of materials (GTAW filler rod, with some coppery-colored coating, so it
solders like a dream, and is as stiff as piano wire) to build an antenna
with.

But I've been searching the web for some weeks now, and I can't seem to
find any kind of formula, except there was this program I downloaded -
LPDA.EXE, which runs on DOS. Unfortunately, it's in Russian or Polish or
Uzbekistani - one of those East Yurp languages. Here's a screen snap:
http://mysite.verizon.net/richgrise/...rog-Output.gif

Which I went through pretty much by-guess-and-by-gosh - can anybody read
that stuff?

There are a lot of factors I don't know about, like "Tau", and all of
the specific designs on the web are flat - something is telling me I
want one of those pyramid-shaped ones, but I really don't know the
difference (between that and flat) - it's probably something to do with
bandwidth or F/B ratio or whatever.

My local library has no ARRL Antenna Book (!), and did I mention I have
a seriously limited budget?

So, how do I pursue this? It'd be nice to have a program that will
calculate the whole thing for me, but am I dreaming? If I want to send
myself to Log-Periodic School, where should I start?

Or, does anyone have a UHF-TV log-periodic design that they'd share? :-)

Before you get too far, be sure you know what you need. This is based on
post 2/09 channel assignments. You will need to cover either a) CH2 - CH51
b)CH7 - CH51
c) CH14 - CH51


This won't do at all! Two of my favorite stations are ch. 56 & ch. 58.
=:-O

I've got 2-13 covered by my external VHF folded dipole. (It's an RV).

Are the channel frequencies going to be all changed around? I suppose
I should email those two stations. I don't know much about DTV, other
than I have to buy a damn box and I need a "better" antenna.

Thanks,
Rich