[Lowfer] dead bands

[Andy - KU4XR]

With the finally increasing activity of Cycle 24, all the lower
frequencies will begin to degrade for long distance paths.
This will maybe push the low power ( Part-15 ) operators into 
the challenge of improving the radiation efficiency of their
transmit antennas. Up to this point, you could just about throw
a wire out of a window on the end of a cane pole and get a signal
out hundreds of miles, ( Gee, was there somebody who did that ?? )
Part-15 Ops don't have the luxury of turning on the big Leen-ee-r,
so great effort goes into squeezing every MilliOHM of Rrad from the
radiator system. I remember reading a post from John A. - W1TAG
about going for weeks at a time without even a hint of long distance
propagation. The Class " D " Switching type PA using the Complimentary
pair transistors ( 2N2907A/2N2222A ) gives a very good efficiency
in its output, So the challenge will start to focus on reducing any
losses to a minimum in the coils, and filters, and increasing the
efficiency of the antenna. Jay - W1VD told me awhile back when I was
trying to improve the antenna for " XR " - " Every OHM counts " 
drop one in the loss area, or gain one in the radiation area, and 
it will make a difference. Plus he told me to get the extra 5 feet 
in antenna height above ground if I could, and it would make a
noticable difference in signal at a distance. My antenna project
to get that height was definitely worth the effort.

Every Ounce Counts !!!  73 guys ::: 



Andy - KU4XR - EM75xr - Friendsville, TN. USA
LOWfer Beacon " XR " @ 185.29875 KHz ( QRSS-60 )
Coordinates:  N:  35º 43' 54" - W:  84º 3' 16"
http://www.myspace.com/beaconxr
http://webpages.charter.net/ku4xr/


--- On Tue, 4/13/10, Mike.WE0H <we0h at gmx.com> wrote:

> From: Mike.WE0H <we0h at gmx.com>
> Subject: Re: [Lowfer] dead bands
> To: "Discussion of the Lowfer (US, European, & UK) and MedFer bands" <lowfer at mailman.qth.net>
> Date: Tuesday, April 13, 2010, 10:57 PM
> There has been some solar storms
> lately. The bands have been from great 
> one moment to closed tight the next moment.
> 
> Mike
> WE0H
> /16
> 
> 
> 
> Paul D wrote:
> > Anyone copying any beacons. I've been looking for WEB
> last couple of nights.No luck. We were gone for a few days
> when I came back sunday WMS was down, finals have been
> replaced, antenna current down due , I think , to the wet
> ground. WMS barely showing up on Ralphs grabber.in the
> daytime.
> > 
> > What kink of luck are you guys having?
> > 
> > Paul k5wms
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