[TowerTalk] Comparing K9AY Loop and KB7GF Shared Apex Loop Array?

[Dan Schaaf]

For my K9AY loop, It was recommended to me by W8WWV to lay some radials on 
the ground, mostly to insure a consistent ground from wet season to dry 
season here in FL. So, I laid 15 radials @ 15 ft long each. I used garden 
staples to hold them down and after a season of cutting the lawn, the 
radials have just disappeared below the grass cuttings mulch.



Best Regards
Dan Schaaf
=================================
K3ZXL www.k3zxl.com
60 Meters www.60metersonline.net
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NOBSKA www.nobska.net
Cape Cod Instruments www.gnm-inc.com
Tel: 941-766-0706
Fax: 941-766-0707
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-----Original Message----- 
From: john at kk9a.com
Sent: Monday, August 12, 2013 8:01 AM
To: towertalk at contesting.com
Cc: ericrosenberg.dc at gmail.com
Subject: Re: [TowerTalk] Comparing K9AY Loop and KB7GF Shared Apex Loop 
Array?

In Aruba, I had a K6SE(sk)pennant 6' from my TX vertical and I found it to
be a useful antenna. It is a good 160m RX antenna. I had played with a
K9AY loop however went with the pennant because it was not ground
dependant. The K9AY loop does have the direction switching advantage.
Unfortunately with a small lot and a lot of local noise, there is only so
much you can do.

GL,
John KK9A aka P40A

To: Tower Talk Mailing List <towertalk at contesting.com>
Subject: [TowerTalk] Comparing K9AY Loop and KB7GF Shared Apex Loop Array?
From: Eric Rosenberg <ericrosenberg.dc at gmail.com>
Date: Sun, 11 Aug 2013 14:24:16 -0400

I'm in need of a decent 160 receive antenna that can fit in my 144 ft
(N-S) x 44 ft (E-W) noisy urban lot. I'm surrounded by (old) power lines
and near a high power AMer (WFED, formerly WTOP) at 1500 kHz. The 160 and
80m inverted L's and 40m half-square run N-S from the back of the lot to
the front.

I've played with EWE's and Pennants, both of which are rather mediocre.
Generally speaking, the Inv-L's have been better, albeit noisier, receive
antennas.

I've looked at K9AYs and now the KB7GF array, which seem to be quite
similar. I'd like to think I can fit either in my backyard, but if I do,
they will be very close to the TX antennas... *maybe* 20 feet from the
verticals, and certainly underneath all the wires. Is one substantially
better than the other?

A major criteria is that the horizontal sections (wires) have to be 10
feet above the ground... I don't want to behead anyone walking in the
backyard!

Is this all a pipe dream?

Sagely advice is appreciated.

73,
Eric W3DQ
Washington, DC

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