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Old 15-Jan-2012, 10:48 PM   #1
issoz
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Location: 199 scioto Ave chullicothie ohio 45601
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Need help coat hanger antenna

I live at ############## Chillicothie, Ohio 45601 and I built a coat hanger antenna and placed in the attic I'm only able to pick up channel who 53 should I be able to pick up more stations his way or will I need to buy a antenna to pick up more stations any help would be greatly appreciated. Tryed turning directions and also different locations and got same out come.

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Issoz

20': http://www.tvfool.com/?option=com_wr...67d937783bed01
50': http://www.tvfool.com/?option=com_wr...67d96bc487fc65

Last edited by GroundUrMast; 15-Jan-2012 at 11:08 PM. Reason: Protected OP's personal information
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Old 16-Jan-2012, 12:53 AM   #2
Electron
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Tv antennas and Tv reception

There are Many tv stations/channels to receive. Install a http://www.antennasdirect.com , DB4e antenna with a CPA19 preamp aimed at 9 degree magnetic compass. Above the roof at about 25 feet or so above ground will be Ok. Here is how to aim antennas , http://www.kyes.com/antenna/pointing/pointing.html. Here are some places to buy antennas and etc. , http://www.solidsignal.com , http://www.amazon.com. Here are some antenna mounts , http://www.ronard.com/909911.html , http://www.ronard.com/34424560.html , http://www.ronard.com/ychim.html , http://www.ronard.com
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Old 16-Jan-2012, 2:15 AM   #3
Dave Loudin
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The antenna that Electron recommended will work. If you still feel the least bit handy, I recommend visiting http://m4antenna.eastmasonvilleweather.com/index.html. The designs documented there evolved from the antenna you built, and could work very well for you. However, don't be tempted to try for WOWK on VHF channel 13. It's too weak for bowtie antennas to pick up.
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Old 16-Jan-2012, 3:03 AM   #4
ghz24
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Yeah if the model you built has wiskers shorter than ~9 inches long or spaced closer than ~8.5 inches just pitch it. (not tuned to new uhf band)

Quote:
The designs documented there evolved from the antenna you built
That's sound advice. If you want a DIY project.
The best of his 8 bays model at > 17 dBi on all but the 2 lowest channels. And break 19 dBi at the best frequency. All those are raw gain not net

Last edited by ghz24; 16-Jan-2012 at 3:11 AM.
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Old 16-Jan-2012, 1:58 PM   #5
marty slater
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ghz24 any more INFO for us that are challenged
witch one of the ANTs Dave would you recommend
marty
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Old 16-Jan-2012, 2:05 PM   #6
issoz
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spec i used

I made the bow ties 7 inches long by 3 inches wide spaced 5 3/4 apart am I right I should have used 9 inches what should the with be and spaced 8 1/2 apart and is this for 4 bay or 8 bay Antenna?
Thanks
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Old 16-Jan-2012, 4:50 PM   #7
issoz
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dementions of antenna needed

I used 7 inches for bow ties should i have used 9 inches and spaced them 5 3/4 apart should I have used 8 1/2 is the new digital spec 9 inches and spaced 8.5 also is this for 4 or 8 bay antenna all help is greatly appreciated.

Thanks
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Old 16-Jan-2012, 5:49 PM   #8
Electron
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Tv antennas and Tv reception

"All those are raw gain not net." The common understanding in the every day world is like saying , Up To.
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Old 16-Jan-2012, 6:11 PM   #9
Electron
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Tv antennas and Tv reception

The DB2e and DB4e are studies of how to design more gain in a tv antenna and have a flat gain across the channels of reception. Antennas Direct has done and has gone beyond what the experminters do in tuning antennas. And put all of that into a production antenna.

Last edited by Electron; 18-Jan-2012 at 6:54 AM.
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Old 20-Jan-2012, 4:38 AM   #10
ghz24
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best whisker

That would depend on your desires.
If you want highest gain deep fringe type then go for an 8 bay.
In general longer wider spaced whiskers are better for low channels/frequencies shorter closer stacked ones are better for high channels. So tune to your suit your needs and locally available channels.
This is a 8 bay forward swept elements and reflector the whiskers are 10.286 Inches long and about 9 1/2 inches apart.
This is not my model it's one that mclapp posted on an antenna development forum. I'm pretty sure that's his site. And these are his pet project.
All gains are dBi

Code:
raw max	19.02			net max	18.967010607		SWR max 3.2944555157
min	16.93			min	15.7627488201		min     1.0829705732
							
Average 18.1965789474			Average 17.6330333435		2.045216139
The SWR gets excessive at the lowest 2 and the highest 3 channels. In the middle it's good. The 4 bay models are lower gain, easier to aim, and probably (I haven't really looked at the 4 bay models) do better SWR wise at the ends of the band.
As far as VHF high (7-13)the 8 bays have some. (didn't run the scans)
Hope that these generalities help you decide on a best for you build.
BTW A grey-hoverman variant as a DIY all around antenna is probably an easier build with ~ 15 dBi UHF and good VHF high as well.

This was to be my dx antenna but I am questing for extreme gain.

4nec2 modeling program is free and gives build dimensions from others models.(with very shallow learning curve,easy) If you wanted to exactly duplicate the above model.

Quote:
"All those are raw gain not net." The common understanding in the every day world is like saying , Up To.
If you want to know the raw gain, netgain , and SWR for center frequency of all US UHF channels you can look it up in my spreadsheet (no macros)
Quote:
Antennas Direct has done and has gone beyond what the experminters do in tuning antennas. And put all of that into a production antenna.
And they magically know you want channel 14 but don't care about channel 49 too!
Oh, that's right they make compromises too only for the average user.


Quote:
and is this for 4 bay or 8 bay Antenna?
The 8 bay is two 4 bays stacked so both and either.

Last edited by ghz24; 20-Jan-2012 at 6:28 AM. Reason: add link
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Old 20-Jan-2012, 3:35 PM   #11
marty slater
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thanks ghz24 thats what i am going to try next
9.5x9 i am fairly handy an for 10-12 bucks
will see what happens
Marty
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Old 22-Jan-2012, 4:50 AM   #12
Electron
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Tv antennas and Tv reception

If requested , Antennas Direct will provide complete technical information of the DB2e and the DB4e antennas. The DB2e and DB4e have nice flat response across the UHF tv channels , how flat is the response of the home made antennas??

Last edited by Electron; 23-Jan-2012 at 4:27 AM.
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