High Def Forum - Your High Definition Community & High Definition Resource

Go Back   High Def Forum - Your High Definition Community & High Definition Resource > High Definition Viewing Mediums, HDTVs > Flat-Panel TVs
Rules HDTV Forum Gallery LINK TO US! RSS - High Def Forum AddThis Feed Button AddThis Social Bookmark Button Groups

Flat-Panel TVs Plasma, LCD RSS - Flat-Panel TVs

Homemade HD Antenna

Reply
AddThis Social Bookmark Button
 
Thread Tools
Old 06-20-2008, 11:13 AM   #76
Okely Dokely!
 
sartor's Avatar
 

Join Date: Aug 2007
Location: Lansing MI
Posts: 83
Default

Nice job and info XDrox!
Your info on Wire thickness or gauge is important I think!

I got a 19" HDTV for the bedroom, and cheaped out using
Dollar store metal coat hangers when I made the HD antenna for it! Recently, the signal was just not stable, especially when comparing it to the first antenna I made using old household hangers.

So I replaced the cheap/thin gauge dollar store metal on the
latest antenna with the thickest old coat hanger wire in the house
I could find, and the picture is much better, and stable!

So the bottom line --> Use the thickest metal coat hangers or
wire that you can buy to make this antenna!
__________________
SHARP LC-42D85U
Toshiba D-R560 DVD Recorder
Sony STR-D1090 + Polk 10A Speakers
sartor is offline   Reply With Quote
Old 09-01-2008, 06:42 PM   #77
My plasma is High Def.
 

Join Date: Aug 2008
Posts: 8
Default

Well I want to thank you all of you for sharing your experience with making homemade antenna. I have looked through the entire posting at this site, and another great site that has lot of great info on the subject at lumenlab, and took from it some of the ideas to build my own homemade antenna.

I have used the dimensions from the youtube homemade antenna. Which calls for spacing between whiskers of 5 inches apart and 7 inches long V-shaped whiskers. I have tried something different with the whiskers in order to bring in high VHF channels. Instead of open V, I have closed the Vs into a loop like the older set top single bowtie antennas. I used inch electrical conduit pipe, inch plastic U-shaped pipe wall mounts for insulators, 12 gage galvanized steel wire, screws and nuts with washers to hold it together.

I was very impressed when I prompt this up on top of a couch next to the window downstairs and was able to pickup my strongest stations at the same strength as I get with my old RS VU-90 antenna that is 25 feet higher up. I live in Longmont Colorado 80501. Almost all stations I should be able to receive from 20 feet height. These stations are coming from Lookout Mountain. All stations that broadcast signal there I receive very well (2.1 (85%), 4.1 (75%), 31.1 (80%)). I also get DT 20.1 and 25.1, 14.1 (80%), and 59.1 at very strong (85-90%), and 7.1 (75%), But the stations that are supposed to come from Morrison Mountain are little week, 6.1 (60%), 9.1 (60%) when I put my antenna all the way up the rooftop mast (about 32 feet from ground). This tower is one peak farther from me. I am able to pick up analog 7 and 9 very clear (9 has ghosting).

With out the reflector the bonus is that I can get relay stations for CBS (4.1) and Fox (31.1) from Fort Collins (5.1, 5.2, 22.1 all about 80%) again very strong.

One more note: Grounding the coax on entry to the house improves the signal reception by about 5% in my case. (the original setup that I have inherited from previous owner did not have any ground on the mast or the coax, luckily for us our trees are another 20 feet higher then the antenna, plus there is a hill top with tall trees cresting about 2000 feet away between my house and the towers which helps to ground the sky when the storm comes trough my neighborhood. That is plus against lightning, but hinders reception. Thanks to the digital switch I have remedied this while trying to improve my reception).
Attached Images
File Type: jpg Bowtie4noReflector.jpg (94.0 KB, 141 views)
File Type: jpg bowtie4anotherView.jpg (95.8 KB, 105 views)
File Type: jpg bowtie4closeup1.jpg (97.5 KB, 93 views)
File Type: jpg bowtie4closeup2.jpg (91.7 KB, 82 views)
File Type: jpg bowtie4onRoof.jpg (69.8 KB, 92 views)
File Type: jpg bowtie4roofTopTest.jpg (86.3 KB, 92 views)
longmonter is offline   Reply With Quote
Old 09-01-2008, 06:49 PM   #78
My plasma is High Def.
 

Join Date: Aug 2008
Posts: 8
Default

Here is my attempt at bowtie 8. I am still to test this bowtie 8 from top of my rooftop mast (32 feet from ground (17 ft roof line + 15ft mast)). Where DT 6.1 (uhf18) and 9.1 (uhf16) come in stronger. It is unable to bring these in strong for lock at ground level. Since I am not able to get 100% signal strength on any of my channels I will get Winegard HDP-269 pre-amp and see if it can make the week stations stronger with out dropouts.

Last pic is a list of stations I should be able to receive and a rough sizing diagram for my bowtie 8 (station listing is current but distances are out dated, these distances were true when these stations were broadcasting from downtown Denver. Now some stations are on a Lookout Mountain and Mount Morrison.)

I have started this project as I am not sure what will work for me with out the need to spend lots of money (return shipping and restocking charges can add up quickly).

Longmonter
Attached Images
File Type: jpg Copy of bowtie8final.jpg (104.4 KB, 125 views)
File Type: jpg bowtie8finalCloseup.jpg (99.9 KB, 89 views)
File Type: jpg bowtie8diagram_.jpg (60.0 KB, 95 views)
longmonter is offline   Reply With Quote
Old 09-08-2008, 08:18 AM   #79
How can anyone watch standard def?
 

Join Date: Sep 2008
Posts: 26
Default

Would it make a difference if the antenna were made from twisted #10 versus a solid #12 wire. I have some 2/1 #10 and made one with it but was only able to pickup the same as I get with my current tower antenna (bad balun).
baddew is offline   Reply With Quote
Old 09-09-2008, 06:28 PM   #80
A couch and an HDTV to go please.
 

Join Date: Sep 2008
Location: Bristol County, MA
Posts: 10
Default

Interesting stuff. Thanks for sharing.
elmoleaf is offline   Reply With Quote
Old 09-13-2008, 12:48 PM   #81
Toshiba Rezga 42HL167
 

Join Date: Sep 2008
Location: South Milwaukee WI
Posts: 10
Default Custom antenna

Nice!!
Sporty is offline   Reply With Quote
Old 09-13-2008, 12:53 PM   #82
Toshiba Rezga 42HL167
 

Join Date: Sep 2008
Location: South Milwaukee WI
Posts: 10
Default Custom antenna

I did some research and this is what I made.

7" long 3/4" steel strapping spaced 5 3/4" Apart down the board.
Hooked it up to a amplified table top antenna external antenna input jack so I can ramp up
the gain if I want.
Went from 12 to 32 channels.


Running this setup into a Toshiba Rezga 42HL167 with fantastic results!!

Last edited by Sporty; 09-13-2008 at 01:20 PM. Reason: added info
Sporty is offline   Reply With Quote
Old 09-18-2008, 08:11 AM   #83
How can anyone watch standard def?
 

Join Date: Sep 2008
Posts: 26
Default

Where did u get the straps for this setup; also if u used a full backing would it stop the signal since I thought the signal only came from the front of this type antenna. thanks
baddew is offline   Reply With Quote
Old 09-19-2008, 06:20 PM   #84
My plasma is High Def.
 

Join Date: Aug 2008
Posts: 8
Default

Quote:
Originally Posted by baddew View Post
Would it make a difference if the antenna were made from twisted #10 versus a solid #12 wire. I have some 2/1 #10 and made one with it but was only able to pickup the same as I get with my current tower antenna (bad balun).
I think it will work, but solid wire is stronger, thus it will stay in place better.
longmonter is offline   Reply With Quote
Old 09-19-2008, 06:30 PM   #85
My plasma is High Def.
 

Join Date: Aug 2008
Posts: 8
Default

Quote:
Originally Posted by longmonter View Post
Here is my attempt at bowtie 8. I am still to test this bowtie 8 from top of my rooftop mast (32 feet from ground (17 ft roof line + 15ft mast)). Where DT 6.1 (uhf18) and 9.1 (uhf16) come in stronger. It is unable to bring these in strong for lock at ground level. Since I am not able to get 100% signal strength on any of my channels I will get Winegard HDP-269 pre-amp and see if it can make the week stations stronger with out dropouts.

Last pic is a list of stations I should be able to receive and a rough sizing diagram for my bowtie 8 (station listing is current but distances are out dated, these distances were true when these stations were broadcasting from downtown Denver. Now some stations are on a Lookout Mountain and Mount Morrison.)

I have started this project as I am not sure what will work for me with out the need to spend lots of money (return shipping and restocking charges can add up quickly).

Longmonter
Well, I did roof top test, but had difficulties. It just did not perform better then bowtie 4. There were two problems with my set up.
1. I did not connect both balun's same on each section,
2nd. One of my 20" coax cables was dropping signal strength.

So I have to do a retest once I fix that connecting cable and reconnect baluns in correct fashion. That should then improve its performance.

I have also received my Winegard HDP-269 pre-amp. Now my signal on my weakest station stays with out dropping. It is not as strong as my old radio shack distribution amp, but it is less noisy. I highly recommend it. Signal strength is same as before, but no drops is nice.

There are some other antenna ideas I am working on, will post more once I realize these.
longmonter is offline   Reply With Quote
Old 10-01-2008, 11:02 AM   #86
Toshiba Rezga 42HL167
 

Join Date: Sep 2008
Location: South Milwaukee WI
Posts: 10
Default Strapping

Quote:
Originally Posted by baddew View Post
Where did u get the straps for this setup; also if u used a full backing would it stop the signal since I thought the signal only came from the front of this type antenna. thanks
You can find it at lumberyards.
I just made a new one with 1" strapping that really works nice.


http://www./avs-vb/showthread.php?t=798265&page=28

Post 826 and 828
Sporty is offline   Reply With Quote
Old 05-25-2009, 02:37 PM   #87
My plasma is High Def.
 

Join Date: May 2009
Posts: 6
Default Works great

Used electric fence wire I had and a board. Signal went from about 20on rabbit ears to over 60 even without the amplifier. I also have a Radio Shack outdoor that don't work as well as the amplified rabbit ears. I'm thinking abou canceling my cable subscription, lol. The pic is better.
Nitrain is offline   Reply With Quote
Sponsored Links
Go Back   High Def Forum - Your High Definition Community & High Definition Resource > High Definition Viewing Mediums, HDTVs > Flat-Panel TVs
AddThis Social Bookmark Button
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads to Homemade HD Antenna
Thread Thread Starter Forum Replies Last Post
Homemade antenna Jerry Iverson Local HDTV Info and Reception 60 09-01-2009 11:28 PM
Help with antenna selection sjt1985 Local HDTV Info and Reception 24 06-01-2009 02:33 PM
HD locals plans 18 is # 1 DISH Network Forum 9 05-18-2009 09:57 PM
Confused about HD antenna : ( kanterra Local HDTV Info and Reception 7 04-24-2009 10:30 PM
UHF Antenna Gain Comparison Charts stampeder Local HDTV Info and Reception 29 03-04-2009 10:05 PM
Have Strong Antenna Signal (100), but Local HD channels are choppy and pixelated annointed3 Local HDTV Info and Reception 14 11-09-2008 05:21 AM


All times are GMT -6. The time now is 07:51 AM.



Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2004 - 2008, High Def Forum