[Lowfer] TAG in NE IL - WOLFIE Filter (longwire antennas)
Steve Ratzlaff
steveratz at wildblue.net
Tue Jun 23 16:35:25 EDT 2009
Hi Andy,
My primary LF receive antennas are unterminated longwires, one E/W 1600' and
one N/S 400'. Even the short one is directional at LF (at least at NDB
freqs) and fills in what the E/W doesn't get. I string them along the
property E/W line which goes over fences partly then into the woods; I keep
them about 10-15' off the ground. I use a basic 3:1 turns ratio matching
transformer and a simple single short ground rod feeding the several hundred
foot coax run to the shack. These are the best LF antennas I've ever had the
luxury to use. If you have room to string longwires, I highly recommend
giving it a try. (I have other antennas such as large vertical amplified
loops, which work OK but nothing like the big longwires, though the loops
have good HF performance too.)
But all the antennas are huge noise magnets currently, with the high storm
static from the east, with little to no night LF reception possible, at
least for aural reception. I mainly DX NDBs and only the stronger signals
are audible at night, with S9+10 to +30 noise levels presently. Even a
narrow audio filter can't cut through such noise to hear weak signals.
73,
Steve AA7U
NE Oregon
----- Original Message -----
From: "Andy - KU4XR" <ku4xr at yahoo.com>
To: " European & UK) and MedFer bandsDiscussion of the Lowfer (US"
<lowfer at mailman.qth.net>
Sent: Tuesday, June 23, 2009 1:14 PM
Subject: Re: [Lowfer] TAG in NE IL - WOLFIE Filter
>
> Garry; - out of curiousity, have you tried using the built in
> Experimental WOLF filter ?? It has helped me. Plus since John is
> locked on freq. I also have used software DSP filtering down to
> 10hZ with results.
>
> I am inclined to agree with John however on the E/W ; N/S , and
> the very high summer static levels. You've probably got an
> advantage on me with your loop vs. my Crossed 80 meter dipole and
> 160 Windom.
>
> I have thought about a long wire ant. meandering thru the woods,
> at about 7 foot above ground, mounted on trees using electric fence
> insulators. Has anyone tried that for a low noise ant ?? if so;
> what was your experience ??
>
>
>
> Andy - KU4XR - EM75xr - Friendsville, TN.
> LOWfer Beacon " XR " @ 184.322 KHz ( QRSS-60 )
> Coordinates: N: 35* 43' 54" - W: 84* 3' 16"
> http://www.myspace.com/beaconxr
>
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