This is my concern.
I built a saltwater load in a 500gr coffee jar, it certainly works as
suggested. I have not tried it with more than 100 watts but I did put power
into it for a fair few minutes. The outer of the jar had noticeably warmed
but I didn't conduct any tests of a more scientific nature. Though I have
not used the load in several months the water in the jar looks essentially
as it did originally. Will have to measure it again when I get home.
I'm not (yet) comfortable with the thought of power being dissipated in an
un screened device such as this. In one of the articles I have seen it
mentioned not using a conductive container but I cannot see why that would
not work. Take a metal can and insert a single conductor into the centre of
the salt water such that the container acts as the other conductor and
essentially screens the load at the same time. Not tried this yet but seems
to me it would be the same thing.
Cheers
Martin, HS0ZED
-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Danny Pease
Sent: 17 July 2010 01:38
To: amps@contesting.com
Subject: Re: [Amps] Salt water load
A shielded load it is not, probably pretty easy to work quite a few stations
with it. Maybe a short stealth antenna design is possible with it? Use some
2 inch PCV and caps for a container and several feet of wire and make a
broadband dipole. ;-)
NG9R
------------------------------
http://www.qsl.net/k5lxp/projects/SaltLoad/SaltLoad.html
Has anybody actually tried these things ?? He show flat swr on 10m.
I'm thinking if a bigger version is feasible.. like 10-20-30 gals. And
maybe using
cu strap or cu tubing for the probes. With the amount of salt involved, I
would
not expect any algae, nor freezing problems. The boiling point might also
be raised
a little, don't have a clue by how much though. >1 gal.... glass is not
feasible for the most
part, but all sorts of plastic, and polycarbonate containers are available,
that will easily
handle 100+ deg C
later... Jim VE7RF
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