Something to keep in mind....
Even in a quiet location with a -10 dBd gain very directional antenna, the
preamp can be thousands of feet from the antenna on 160 with no ill effects.
My eight vertical array, for example, has about 600 feet of F6, then 2000
feet of F11, then the preamp. It limits on propagated noise even in
daylight.
Of course there are things that might make a remote amplifier useful, such
as very lossy feedlines and very low gain antennas, but even 3000 feet of
F11 type cable between antenna and preamp isn't an issue with normal
antennas. What might be an issue is a compact loop or other very negative
gain antenna.
----- Original Message -----
From: <k1fz@myfairpoint.net>
To: "Don Kirk" <wd8dsb@gmail.com>
Cc: "Topband" <topband@contesting.com>
Sent: Thursday, September 25, 2014 2:55 PM
Subject: Re: Topband: Remote pre-amp power source
Hi Don,
Pre-amp requires 12-18 volts at 130ma. (low band DXing- nightime use)
This solar charger puts out 20 volts that could be reduced to 15 volts
with a three legged regulator. I was hoping to find a pre-assembled
charger & battery, but may have to build one.
http://www.harborfreight.com/15-watt-solar-battery-charger-68692.html
73
Bruce-K1FZ
What is the operating current and voltage of the preamp you plan to
use? Since it sounds like the preamp will be powered on all the time this
information will be key in the selection of the battery capacity and solar
panel rating.
Don (wd8dsb)
On Thu, Sep 25, 2014 at 1:30 PM, wrote:
Anyone using, or know of a source, for a compact battery with solar
cell charger, to power a remote antenna pre-amp ?
73 Bruce-K1FZ
www.qsl.net/k1fz/pennantnotes.html
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