Re (Elecraft ) 160 m loop a big failure

[mikerodgerske5gbc]

Don, I'm certainly sad to hear your having problems. Do you have any excess ladder line in the shack? That's about the only thing I can think of.

My only rfi has been in amplified speakers on 17m. The feedpoint of my
80 m delta loop is 25' from the shack over the house. The house is not inside the loop but under one corner.
300 ohm line come inside to a manual tuner. The old mfj had a 1:1 balun and the palstar I now use is 4:1 but the 1:1 worked. Their is a gap vertical inside the loop. I used to run 500 w but now run qrp most of the time.
Did you have the issue at 100w and is shack on ground or basement level.

Also some commented on loops being
Nvis antennas and they are on the cut frequency but the elevation take off angle comes down at multiple wavelengths. Their pattern is best compromise at 3 or 4 wavelengths.

73
Mike R

Sent from my spy ring
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[Mel]

Don,


You might also consider making it a three sided loop with the apex away from the house to a friendly tree.  Several hams are doing it that way and the patterns are not the same as a square loop, but the match and multiband operation is equal,  a thought.

Mel, K6KBE



________________________________
From: Mike Rodgers <[hidden email]>
To: "[hidden email]" <[hidden email]>
Sent: Sunday, October 16, 2011 12:28 PM
Subject: [Elecraft] Re (Elecraft ) 160 m loop a big failure

Don, I'm certainly sad to hear your having problems. Do you have any excess ladder line in the shack? That's about the only thing I can think of.

My only rfi has been in amplified speakers on 17m. The feedpoint of my
80 m delta loop is 25' from the shack over the house. The house is not inside the loop but under one corner.
300 ohm line come inside to a manual tuner. The old mfj had a 1:1 balun and the palstar I now use is 4:1 but the 1:1 worked. Their is a gap vertical inside the loop. I used to run 500 w but now run qrp most of the time.
Did you have the issue at 100w and is shack on ground or basement level.

Also some commented on loops being
Nvis antennas and they are on the cut frequency but the elevation take off angle comes down at multiple wavelengths. Their pattern is best compromise at 3 or 4 wavelengths.

73
Mike R

Sent from my spy ring
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
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Please help support this email list: http://www.qsl.net/donate.html
______________________________________________________________
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Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html