"Chuck Olson" wrote in message ...

"Rich Grise" wrote in message
news
Or, does anyone have a UHF-TV log-periodic design that they'd share? :-)

Thanks,
Rich

Lo and behold, here is one http://tinyurl.com/665r5a but it's a throw-back
to a simpler time when the HP42S calculator was an engineer's prized tool.
If you have a 42S, punch it in and use it. Otherwise, this is mainly a
learning tool to show how simple the calculations are. I think this design
could be put onto a Lotus123 calculating spread sheet where all the output
data windows would suddenly by filled up upon entering the needed input
data.


I'm really disappointed in the comcast customer's website - - I tried to access the program later in the evening and found it required I sign in - - even though I specified the file to be "public". Let me know if you have trouble getting the file. I would appreciate any recommendation for a better way to access the Word document than the use of this comcast facility.

On Mon, 24 Nov 2008 16:07:35 -0800, Chuck Olson wrote:
"Rich Grise" wrote in message

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

Lo and behold, here is one http://tinyurl.com/665r5a but it's a throw-back
to a simpler time when the HP42S calculator was an engineer's prized tool.
If you have a 42S, punch it in and use it. Otherwise, this is mainly a
learning tool to show how simple the calculations are. I think this design
could be put onto a Lotus123 calculating spread sheet where all the output
data windows would suddenly by filled up upon entering the needed input
data.

Too late! I've already built the 4-bay bowtie:
http://www.youtube.com/watch?v=EWQhlmJTMzw

But I used ER70S-2 1/16 weld filler rod (stiffer than a coathanger, and
copper-plated; solders like a dream):
http://mysite.verizon.net/richgrise/...QuadBowTie.jpg

And it works just spiffy! I had to go to Whittier Electronics to get
the balun, since RS seems to have dropped them from their line-up:
http://www.whittierelectronics.com/

It was $2.99; the rest of the antenna was free. :-)
(yes, I'm really that broke. )-; )

Thanks,
Rich

"Rich Grise" wrote in message
news
On Mon, 24 Nov 2008 16:07:35 -0800, Chuck Olson wrote:
"Rich Grise" wrote in message

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

Lo and behold, here is one http://tinyurl.com/665r5a but it's a
throw-back
to a simpler time when the HP42S calculator was an engineer's prized
tool.
If you have a 42S, punch it in and use it. Otherwise, this is mainly a
learning tool to show how simple the calculations are. I think this
design
could be put onto a Lotus123 calculating spread sheet where all the
output
data windows would suddenly by filled up upon entering the needed input
data.

Too late! I've already built the 4-bay bowtie:
http://www.youtube.com/watch?v=EWQhlmJTMzw

But I used ER70S-2 1/16 weld filler rod (stiffer than a coathanger, and
copper-plated; solders like a dream):
http://mysite.verizon.net/richgrise/...QuadBowTie.jpg

And it works just spiffy! I had to go to Whittier Electronics to get
the balun, since RS seems to have dropped them from their line-up:
http://www.whittierelectronics.com/

It was $2.99; the rest of the antenna was free. :-)
(yes, I'm really that broke. )-; )

Thanks,
Rich

Thanks, Rich - - it looks great. I'm going to try putting one together,
too - - the phased quad bow-tie is very popular so it must be a good
performer. And the price is right.

Chuck

"Chuck Olson" wrote in message
...

"Rich Grise" wrote in message
news
Or, does anyone have a UHF-TV log-periodic design that they'd share? :-)

Thanks,
Rich

Lo and behold, here is one http://tinyurl.com/665r5a but it's a throw-back
to a simpler time when the HP42S calculator was an engineer's prized tool.
If you have a 42S, punch it in and use it. Otherwise, this is mainly a
learning tool to show how simple the calculations are. I think this design
could be put onto a Lotus123 calculating spread sheet where all the output
data windows would suddenly by filled up upon entering the needed input
data.

Sorry about the filename not working. This one should work:

http://tinyurl.com/5qxh9u

On Fri, 05 Dec 2008 19:32:03 -0800, Chuck Olson wrote:
"Chuck Olson" wrote in message

"Rich Grise" wrote in message
news
Or, does anyone have a UHF-TV log-periodic design that they'd share?
:-)

Sorry about the filename not working. This one should work:

http://tinyurl.com/5qxh9u

Too late! ;-) I've already made the "coat hanger" four-bay bowtie, but
with weld rod rather than hangers. ;-)

It was on youtube:
http://www.youtube.com/watch?v=EWQhlmJTMzw

Thanks!
Rich

In article ,
says...
On Fri, 05 Dec 2008 19:32:03 -0800, Chuck Olson wrote:
"Chuck Olson" wrote in message

"Rich Grise" wrote in message
news Or, does anyone have a UHF-TV log-periodic design that they'd share?
:-)

Sorry about the filename not working. This one should work:

http://tinyurl.com/5qxh9u

Too late! ;-) I've already made the "coat hanger" four-bay bowtie, but
with weld rod rather than hangers. ;-)

It was on youtube:
http://www.youtube.com/watch?v=EWQhlmJTMzw

Thanks!
Rich



Yep, it's all about the antenna. Hell, even a dipole tuned to the
midpopint of the band used for HD would get better performance.

On Nov 19, 3:45*pm, Rich Grise wrote:
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? :-)

Thanks,
Rich

I suspect Rich is Virginia Newbon, she's using at least 40 male
aliases in most newsgroups existant. Literally, that's hundreds if not
a thousand.