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AM antenna update [message #25826] Thu, 04 May 2006 23:25 Go to next message
Paul C. is currently offline  Paul C.
Messages: 218
Registered: May 2009
Master
Well, I was very unhappy with the non performance of a commercial AM antenna I purchased. The one I had bought claimed to be a "loop" but opening up the sealed black plastic case show it was not. And it didn't work. At all.

I made a quicky trash can parts loop antenna that is working great. Simply wrapped 5 turns of magnet wire around a rectangular piece of plastic cut from the bottom of a detergent jug.

I found this article (link below) about "The Ultimate AM Loop Antenna". As I was about to gather parts for it I found both a kit version and assembled version on eBay.

These "Ultimate Loop Antennas" are made by Jeff Burns. He has them on eBay quite often. They sell for $22 plus $7 shipping for the kit, and $33 plus $20 shipping for the assembled version. This antenna is 17" wide x 21" tall.

There is also a smaller assembled version for $26 plus $12.50 shipping. These prices are US Dollars. 9" wide x 11" tall. These are assembled.

I ordered the kit version. It just arrived today. All the wood was cut to size, edge of the base attractively routed, all holes drilled, and the wood nicely sanded. Screws and other hardware have an attractive bright brass or gold colored finish. Also included is wire for the loop, a terminal strip for connecting wiring, and a piece of 300 ohm twinlead to connect to your tuner or receiver. There are some clear plastic feet to go on the bottom of the base. There is even an instructional DVD.

All you need for the kit version is to stain and varnish. I checked the fit of the parts, and they fit perfectly. Right now the stain is drying overnight (I used Minwax stain). In the morning I will use a spraycan type poly acrylic varnish to seal it. This stuff dries in 30 minutes between coats.

After the poly coating dries it won't take 15 minutes to assemble. I'll be listening to AM by the time I finish my second cup of coffee. If it works as well (and should work better) than my "Jug-tenna" I will be a VERY happy camper!



Re: AM antenna update [message #25828 is a reply to message #25826] Fri, 05 May 2006 08:58 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18786
Registered: January 2001
Illuminati (33rd Degree)

Great link, Paul, thanks! I'm amazed that a commercial product would be anything else since loops work so well for the AM band.


Re: AM antenna update [message #25829 is a reply to message #25828] Fri, 05 May 2006 10:29 Go to previous messageGo to next message
Paul C. is currently offline  Paul C.
Messages: 218
Registered: May 2009
Master
Have the Ultimate AM Loop kit assembled, hooked up to my tuner and... SUCCESS! Pulling in daytime AM stations I have not heard before. Will see what happens tonight... but with what I am pulling in now, am very optimistic.

Re: AM antenna update [message #25830 is a reply to message #25829] Fri, 05 May 2006 11:37 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18786
Registered: January 2001
Illuminati (33rd Degree)

Yeah, I have the C Crane Select-A-Tenna which is a tuned loop. It pulls in radio from several hundred miles away. On many of my tube radios, I hand wound a loop similar to yours and placed it on a cardboard form. Works great! Most of my radios have a loop built-in, but a couple of them have a connector for an external antenna. I always put a loop on them. Best deal for the AM band.


Re: AM antenna update [message #25831 is a reply to message #25830] Fri, 05 May 2006 20:30 Go to previous messageGo to next message
Paul C. is currently offline  Paul C.
Messages: 218
Registered: May 2009
Master
Here is the finished antenna:

Re: AM antenna update [message #25832 is a reply to message #25831] Fri, 05 May 2006 20:31 Go to previous messageGo to next message
Paul C. is currently offline  Paul C.
Messages: 218
Registered: May 2009
Master

Try again...

Re: AM antenna update [message #25833 is a reply to message #25832] Sat, 06 May 2006 00:45 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18786
Registered: January 2001
Illuminati (33rd Degree)

Looks great! I know that works well!


Re: AM antenna update [message #25834 is a reply to message #25826] Sat, 06 May 2006 22:51 Go to previous messageGo to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)
All that work and you could have bought one for $500. Scroll down link. (Sorry, just pulling your chain.)

Do you Dx? What AM receiver are you using?


Re: AM antenna update [message #25835 is a reply to message #25834] Sat, 06 May 2006 23:29 Go to previous messageGo to next message
Paul C. is currently offline  Paul C.
Messages: 218
Registered: May 2009
Master
You bet! And it WORKS and WORKS WELL!

I have an Onkyo T-4500 tuner.

Mainly wanting to hear some FM stations in the 45-60 mile range, but also wanted to get more than 2 AM stations. I couldn't understand why I had a dial full of AM stations in my car, but could only pick up two, and very poorly, in the house. The Godar Model 10 AM just did not work.

But the "Ultimate AM Loop Antenna" works like a charm. At night I am pulling in stations from all over... Atlanta, Georgia, Houston and Dallas area, even San Antonio, Tx. St. Louis, MO, Chicago, IL, and more.

Go to eBay and search for "ultimate AM antenna".

Re: AM antenna update [message #25836 is a reply to message #25833] Wed, 10 May 2006 20:21 Go to previous messageGo to previous message
Paul C. is currently offline  Paul C.
Messages: 218
Registered: May 2009
Master
With the "Ultimate AM Antenna", from here on the Gulf Coast I am picking up at night:

KLVI-AM 560 Beaumont, TX 5,000 watts (day & night) 190 miles

WSB-AM 750 Atlanta, GA 50,000 watts 550 miles

KBAP-AM 820 Ft. Worth, TX 50,000 watts 440 miles

WWL-AM 870 New Orleans, LA 50,000 watts 90 miles (so clean it sounds FM day or night)

WLS-AM 890 Chicago, IL 50,000 watts 980 miles

KMOX-AM 1120 St. Louis, MO 50,000 watts 730 miles

KXKW-AM 1130 Shreveport, LA 50,000 watts 270 miles

WOAI-AM 1200 San Antonio, TX 50,000 watts 470 miles

And many closer stations. This loop antenna certainly exceeds all expectations I had for AM.

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