Topband: Low frequency RX antenna
Tim Duffy
k3lr at k3lr.com
Thu Oct 3 23:13:06 EDT 2024
Hello Lee;
Great to hear from you.
Yes – I have a pair of VE3DO loops – spaced 5/8 wave length – aimed at Europe (also can be switched to 225). Then a single VE3DO loop for 135/315 degrees. It is all about more choices. I have a HI-Z 8 circle and a HI-Z 4 square – also spaced 500 feet apart – broadside on Europe.
There is a 5 element parasitic vertical Yagi for 160 that we use for TX and RX – that has tremendous F/B (for 15 KHz of the band). This was published in the Yagi chapter of the last three editions of the Low Band DXing book.
So 3 main sets of RX antennas. Any two of these RX antenna arrays can be fed to the DX Engineering NCC-2 for antenna combining to develop incredible directive patterns.
Beverages need to be away from towers and other antennas to work well. I just cannot get them far enough away on this property to work – so they are gone. The short vertical arrays work great. Twice we have worked over 100 countries in a weekend on 160 meters with this setup.
I am 1 mile from Ohio J
73
Tim K3LR
From: Lee Hiers [mailto:lee.hiers at gmail.com]
Sent: Thursday, October 3, 2024 1:04 PM
To: Tim Duffy
Subject: Re: Topband: Low frequency RX antenna
So you're using the VE3DO loops to augment the Hi-Z and tx antenna - just to have more choices? Presumably the loops are better at some times than the other choices, correct?
And, the Hi-Z circle arrays are generally considered better than Beverages these days, aren't they? I'm surprised you don't have Beverages....
73 de Lee, AA4GA
On Sun, Sep 29, 2024 at 11:07 PM Tim Duffy <k3lr at k3lr.com> wrote:
Greg, W8WWV has done some new work on the VE3DO loop.
I use 3 of them here at K3LR.
Greg's latest paper is here:
http://www.k3lr.com/engineering/VE3DO/OptimizedDOLoop.pdf
73
Tim K3LR
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