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Guest Message by DevFuse

Photo

Coat Hanger Antenna


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19 replies to this topic

#1 OFFLINE   timmmaaayyy2003

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Posted 29 January 2009 - 01:31 PM

I just wanted to post my experience with the "Coat Hanger Antenna" that has been seen on the internet.

http://www.metacafe....bought_amazing/

The process involves creating an 8 element UHF antenna out of a board and coat hangers (as the name implies).

All I can say is, IT WORKS!!!:D

I built mine using copper wire (12 ga). Other than that, the only modification I added to it was 2 6 foot wires added at the matching transformer so it will pick up the VHF in addition to the UHF. Best of all, it didn't cost me a dime since I had all the supplies already.

I have it mounted in the attic of a one story house and my signal strength is in the low 70's to 100 YMMV.

Now if only I could get DTV to add all the sub channels to my AM21.:rolleyes:
Phil B.

I guess I picked the wrong week to stop sniffin' glue! :D

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#2 OFFLINE   smackman

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Posted 29 January 2009 - 02:22 PM

You say you added 2 6 foot wires at the transformer for VHF. Did you put one section of 6 foot wire under each screw? Did you pont the wires up like a "V" with this 6 foot addition?
Thanks in advance
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#3 OFFLINE   BattleZone

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Posted 29 January 2009 - 02:33 PM

This video is just showing how to make a DIY UHF bow-tie panel antenna. But such antennas are already very cheap; mine cost less than $20, and is out-door worthy and came with a mount for a pole.

Still, it's always interesting and fun to be able to make something useful yourself.

#4 OFFLINE   Retro

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Posted 29 January 2009 - 02:41 PM

Does aluminum foil still work?:lol:

#5 OFFLINE   timmmaaayyy2003

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Posted 29 January 2009 - 03:49 PM

You say you added 2 6 foot wires at the transformer for VHF. Did you put one section of 6 foot wire under each screw? Did you pont the wires up like a "V" with this 6 foot addition?
Thanks in advance


That's exactly how I did it. The one VHF station in my area is now at 100%.
Phil B.

I guess I picked the wrong week to stop sniffin' glue! :D

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#6 OFFLINE   timmmaaayyy2003

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Posted 29 January 2009 - 03:51 PM

This video is just showing how to make a DIY UHF bow-tie panel antenna. But such antennas are already very cheap; mine cost less than $20, and is out-door worthy and came with a mount for a pole.

Still, it's always interesting and fun to be able to make something useful yourself.


Ah, but with mine I saved $20 and in our current situation....

Hey, $20 is $20:D
Phil B.

I guess I picked the wrong week to stop sniffin' glue! :D

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#7 OFFLINE   Tom Robertson

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Posted 29 January 2009 - 04:25 PM

Awesome, timmmaaayyy2003!

To me, this isn't a project about $$ (ok $20 is $20), but about having fun building something that is simple and works.

Congrats!
Tom

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#8 OFFLINE   beakor

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Posted 29 January 2009 - 04:42 PM

Do you have a picture to share?

#9 OFFLINE   timmmaaayyy2003

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Posted 29 January 2009 - 06:31 PM

Here you go.

antenna.jpg [
Phil B.

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#10 OFFLINE   beakor

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Posted 29 January 2009 - 06:56 PM

nice! Its always fun to build things.

#11 OFFLINE   Tom Robertson

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Posted 29 January 2009 - 08:20 PM

Again, awesome job!

Thanks for the picture.

Tom

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My real treasures: 5 Grandchildren - S, D, M, M, C ; Now 5! Great-Grandtibbers - B, H, J, A, and M (Born 7/31/2011)


#12 OFFLINE   dhhaines

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Posted 29 January 2009 - 08:33 PM

timmmaaayyy2003 looks good.

One question though, how far are you from the your local stations transmitters ?
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#13 OFFLINE   dodge boy

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Posted 30 January 2009 - 06:22 AM

Here you go.

[ATTACH]17282[/ATTACH][


Pretty Slick....
How far are you from the stations?
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#14 OFFLINE   smiddy

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Posted 30 January 2009 - 07:29 AM

Nice design. I have put together similar antenna in the past.
Aaron 'smiddy' Smith

#15 OFFLINE   sweep49

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Posted 30 January 2009 - 09:02 AM

By gosh that looks a lot like my CM4228 after I removed the directional screen. Don't have the VHF rods on it however. Nice job.

#16 OFFLINE   rlgold88

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Posted 30 January 2009 - 11:24 AM

The top and bottom X or (where the wires cross) Should they be touching or not if I am using Non coated 10gauge wire?

#17 OFFLINE   Scott in FL

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Posted 30 January 2009 - 11:39 AM

The top and bottom X or (where the wires cross) Should they be touching or not if I am using Non coated 10gauge wire?


They should not touch. Even if you're using insulated wire you should still try to keep the two wires apart by a 1/4 inch or so where they cross. Have a look at this picture and you can see how Channel Master keeps the wires apart: http://www.solidsign...oom=Large#xview

Looks like a CM4221 with the reflector screen removed: a 4-bay bowtie antenna.

#18 OFFLINE   hasan

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Posted 30 January 2009 - 02:54 PM

I just wanted to post my experience with the "Coat Hanger Antenna" that has been seen on the internet.

http://www.metacafe....bought_amazing/

The process involves creating an 8 element UHF antenna out of a board and coat hangers (as the name implies).

All I can say is, IT WORKS!!!:D

I built mine using copper wire (12 ga). Other than that, the only modification I added to it was 2 6 foot wires added at the matching transformer so it will pick up the VHF in addition to the UHF. Best of all, it didn't cost me a dime since I had all the supplies already.

I have it mounted in the attic of a one story house and my signal strength is in the low 70's to 100 YMMV.

Now if only I could get DTV to add all the sub channels to my AM21.:rolleyes:


I love RF experiments!

This is basically a 4 bay bow-tie ....performance could be improved significantly with a reflector screen behind the bow ties. I like the modification adding a VHF dipole at the feed point. It does introduce matching issues and will modify the bow tie antenna pattern somewhat, but the key is:

1. It's cheap
2. It's fun
3. It worked!!!

Congrats on your efforts and thanks for posting your little RF experiment.

...hasan, N0AN

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#19 OFFLINE   hdtvfan0001

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Posted 30 January 2009 - 03:19 PM

I just wanted to post my experience with the "Coat Hanger Antenna" that has been seen on the internet.

Your real last name doesn't happen to be Popeil by some chance? :D:lol:
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#20 OFFLINE   Nick

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Posted 30 January 2009 - 04:26 PM

Looks similar (not simular) to several experimental home-brew antennae I fabricated as a kid back in the day. There is very little new under the Sun, just variations on a theme, modifications and improvements.

I once made a bathroom phone with coathanger wire, and a tv remote out of a Prince Albert tobacco can, back before there were tv remotes.

The greatest 'discovery' for youse guys is that you don't always have to get your stuff ready-made at RS or BB.

Edited by Nick, 30 January 2009 - 04:35 PM.

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