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Author Topic: Here is another OTA Antenna Design  (Read 1321 times)
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Hyper
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« on: Jul 06 2010 11:39:42 »

Here is another OTA Antenna Design

This one is made by forum member professorbolin, i dont think he would mind if i shared the pic.

Maybe he will tell us what is costs to make and how well it works! Certainly looks like it would work well.





 ;D


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My son Evan, taken from his family and friends on March 26, 2010 at the age of 15. We love you and miss you Evan. We will see you again soon in heaven. I miss you son. You were the best son a dad could have. I am so proud of you. Save a place for me.
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« Reply #1 on: Jul 06 2010 11:56:16 »

Here are the plans I found on the internet.

Inside a farm house in a rual area about 30 miles south of Chicago Illinois, this very antenna pulled in an ACTUAL 40 HDTV channels with great reception strength in the signal meter for each channel.

For the back reflector, I used a BBQ Grill cover that you buy at Home depo. They are made to cover a dirty grill as to keep your food sanitary. They work great for this application!

Total cost for this build was less than 7.00 Total United States Dollars. The Balun splitter alone, was 5.50 USD at radio Shack.
« Last Edit: Jul 06 2010 12:13:51 by professorbolin » Logged
professorbolin
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« Reply #2 on: Jul 06 2010 11:58:59 »

Here is the Fifth(5th) Photo that I could not upload the first time.
« Last Edit: Jul 06 2010 12:02:09 by professorbolin » Logged
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« Reply #3 on: Jul 06 2010 12:08:45 »

Thanks for the plans!
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My son Evan, taken from his family and friends on March 26, 2010 at the age of 15. We love you and miss you Evan. We will see you again soon in heaven. I miss you son. You were the best son a dad could have. I am so proud of you. Save a place for me.
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« Reply #4 on: Jul 06 2010 12:11:51 »

I believe it will be the best money ever spent by any one who builds this antenna. Everybody enjoy!!



Helpfull hint! stay with the plans! My friend made one, and thought if he made the V's bigger they would get better reception. It didn't! Change the design and you change the wave's signal reception it brings in.
Stick to the plans and you will receive an awsome signal!

I would like to see some photos of the antennas made from these plans.
« Last Edit: Jul 06 2010 12:19:52 by professorbolin » Logged
El_Viejo
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« Reply #5 on: Dec 20 2011 12:52:36 »

Here is a pix of the RS one that sells for $40.  I bought 2 very similar to it about 6-7 years ago on close-out at $2.50 apiece.  El_Viejo

Yes, they call it a 4 bay, but they are only showing 3.  Three would not work very well.
« Last Edit: Dec 20 2011 12:54:24 by El_Viejo » Logged

E_V
The old tomcat sat on the backyard fence, his feet were full of blisters; his head was up and his tail was down, and the wind blew through his whiskers.
Ubuntu 18.04.1 LTS AMD64 ASUS M4A7XTD EVO
True FTA: DMSI Hotdish90 (37") for 91W, 97W and 103W; Samsung JS851C11 (33") for 123W ITC; DN pro plus for 118 ITC & 125W; Winegard DS3101 1Meter 103W, Prodelin 1.2m for 99W-C.    All going to a Amiko Nano HD, an OpenBox S9, Linkbox 9000i Local, and Manhattan 1978.
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« Reply #6 on: Feb 19 2012 03:31:13 »

Here is a design that is supposed to approach the performance of an 8-bay.   It is tuned mainly for USA UHF channels 14-51 but with a screen reflector it should pick up signal all the way down to physical channel 7.  I haven't built it yet but others have raved about this design.

I did try the youtube coathanger antenna but found it to be pretty weak and the whiskers were too short which made it almost useless for lower channels.
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Tinker
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« Reply #7 on: Feb 25 2012 07:55:14 »

1) Why do the wires have to cross on the board?

2) Why does the Balun have to be in the middle?

3) If all the elements are cut to the same length, wouldn't it be tuned to one channel?
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El_Viejo
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« Reply #8 on: Apr 19 2012 10:49:08 »

The wires cross to keep everything in phase.  Without it they would cancel each other ( upper and lower halves).  Receive antennas are not as critical frequency (channel) wise as it would be if used to transmit.  I am not sure but I think the variable angle between the whiskers has a bearing on the band width.  E_V
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E_V
The old tomcat sat on the backyard fence, his feet were full of blisters; his head was up and his tail was down, and the wind blew through his whiskers.
Ubuntu 18.04.1 LTS AMD64 ASUS M4A7XTD EVO
True FTA: DMSI Hotdish90 (37") for 91W, 97W and 103W; Samsung JS851C11 (33") for 123W ITC; DN pro plus for 118 ITC & 125W; Winegard DS3101 1Meter 103W, Prodelin 1.2m for 99W-C.    All going to a Amiko Nano HD, an OpenBox S9, Linkbox 9000i Local, and Manhattan 1978.
Countryboy.1949
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« Reply #9 on: Apr 20 2012 12:34:19 »

Here are the plans I found on the internet.

Inside a farm house in a rual area about 30 miles south of Chicago Illinois, this very antenna pulled in an ACTUAL 40 HDTV channels with great reception strength in the signal meter for each channel.

For the back reflector, I used a BBQ Grill cover that you buy at Home depo. They are made to cover a dirty grill as to keep your food sanitary. They work great for this application!

Total cost for this build was less than 7.00 Total United States Dollars. The Balun splitter alone, was 5.50 USD at radio Shack.

I built one like this from a video I saw on You Tube. You can't see the top left bow tie, but it's there....picks up three stations from appx. 65 miles away....I'm in a very rural area. Been meaning to put a reflector on the back but haven't just yet. It's just setting on the floor of my deck in the back yard. But all three channels come in cystal clear.

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