[Lowfer] Scrutinize this antenna

[jrusgrove at comcast.net]

Dex

A larger turns ratio to the antenna might yield more signal ... but if you're already limited by 
atmosheric noise there's no sense in doing so as the s/n ratio won't improve. Don't argue with 
success.

Jay W1VD  WD2XNS  WE2XGR/2




----- Original Message ----- 
From: "Dexter McIntyre W4DEX" <dexter.mc at gmail.com>
To: "Discussion of the Lowfer (US, European, &amp;UK) and MedFer bands" <lowfer at mailman.qth.net>
Sent: Sunday, February 26, 2012 1:32 PM
Subject: [Lowfer] Scrutinize this antenna


> I've used many different antennas for LF reception over the past 20+
> years.  A 10 foot diameter tuned loop with a balanced coupled preamp
> most of the time proved to be the best for 1750 and 2200 meter
> reception.  Last summer I ran a 500 foot length of 75 ohm coax down into
> the heavily wooded area to the south east side of the hill where our
> house is located.  Over the 500 foot span the ground drops about 80 feet
> in elevation.  This puts ground level at the house above the tree tops
> at the far end of the coax.  Initially I had the coax connected to a
> single turn loop about 80 feet long by 40 feet high.  That wire didn't
> last very long due to several tree limbs falling and breaking the wire.
> So I just tied the ends of one section of the wire that went over one of
> the trees to the coax.  The wire did receive of course but no better
> than my 2200 meter transmit antenna.  So using some transformers I had
> wound for other projects I came up with what's in the rough diagram at
> the link below.  After multiple comparisons over the past months this
> makeshift antenna has proven to be a good performer from LF up through
> the AM BC band.  So I ask the antenna experts their thoughts and
> suggestions to possibly improve upon this haphazard design.
>
> http://dl.dropbox.com/u/15095569/w4dex/lf_rx_ant.jpg
>
> Dex
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