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/images/LP-Prog-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? :-)
> 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/images/LP-Prog-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?
Are you seriously THAT hard up for cash? :->
> 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? :-)
Try this - go to your local hardware or whatever store that sells a suitable log-periodic antenna with camera and tape measure in hand. Record it all and then go home and duplicate. Or easier still, buy it, take home, duplicate, then return for a refund.
> 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/images/LP-Prog-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? :-)
David L. Jones wrote: > On Nov 20, 9:45 am, Rich Grise <r...@example.net> 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/images/LP-Prog-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?
> Are you seriously THAT hard up for cash? :->
>> 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? :-)
> Try this - go to your local hardware or whatever store that sells a > suitable log-periodic antenna with camera and tape measure in hand. > Record it all and then go home and duplicate. Or easier still, buy it, > take home, duplicate, then return for a refund.
> Dave.
You don't really need a new antenna. If your current antenna is working such that you get a good picture then it should work as a digital tv antenna.
On Wed, 19 Nov 2008 22:45:19 GMT, Rich Grise <r...@example.net> 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.
Reminds me of the famous, very expensive Dick Smith Electronics Coa-Thanger antenna.
In article <pan.2008.11.19.22.45.03.655...@example.net>, Rich Grise <r...@example.net> wrote:
>Or, does anyone have a UHF-TV log-periodic design that they'd share? :-)
Most of the wideband TV antennas I've seen, seem to be log-periodic in the VHF range, but to use a reflector and a bunch of auxiliary elements (which don't appear to stick to the L-P taper schedule) for the UHF.
You might want to consider a different approach - have you seen this one?
-- Dave Platt <dpl...@radagast.org> AE6EO Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads!
> 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/images/LP-Prog-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
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
"Rich Grise" <r...@example.net> wrote in message news:pan.2008.11.19.22.45.03.655469@example.net... > 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/images/LP-Prog-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
Upisi najnizju radnu frekvenciju : enter lowest frequency Upisi najvisju radnu frekvenciju : enter highest frequency
Duzina antene: length of antena Broj elemenata: number of elements
Pritisni taster za proracun antene: press a key to calculate antenna
Duzina 1. elem. length of first element
Pritisni taster za nastavak Press any key to continue
Duzina zavrsnog kratkospojenog odsecka: length of final shorted section Upisi precnik dipola: enter diameter of the dipole
Upisi ulaznu otpornost (ohm): Entry resistance (weird in original)
Impedanca napojnog voda: feeder impedance (not sure what this is)
Upisi precnik napojnih provodnika: diameter of feeding leeds (my guess these are two bars that hold elements)
razmak izmedju napojnih provodnika: distance between feeder leeds (and distance between two bard holding elements)
You owe me a beer. BTW, its Croatian or Serbian. I kind of understand some 90%.
On Wed, 19 Nov 2008 18:14:27 -0500, Tam wrote: > "Rich Grise" <r...@example.net> wrote in message > news:pan.2008.11.19.22.45.03.655469@example.net... >> 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/images/LP-Prog-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.
