Hi All,
I'm sure that the Epsom salts trick works well, but seems to require
quite a high level of maintenance. At my remote Rx site I use multiple
ground rods to terminate my Beverages. I find that using 3 rods, then
bringing the termination resistance back up to the 500 ohm that it
should be using a fixed resistor, works very well. The total
termination resistance then stays fairly constant through both wet and
dry seasons.
I do also check the resistance from time to time, using a little
portable 100 Hz AC source that I made. The source is connected to the
opposite end of the wire from the termination, and can therefore be used
to check the wire continuity as well. I have found that trying to make
DC measurements is very unreliable, as the variable electrochemical
effects alter the measurements quite considerably. The 100 Hz does NOT
give the same results as using an RF source would, but at least it
allows a stable reference to be noted, against which future measurements
can be compared.
73 Greg ZL3IX
On 2011-01-17 19:09, Mike Waters W0BTU wrote:
> I forget how often, Mark. I think it depended on when rain washed it away. The
> performance would fade, and a fresh application instantly restored it.
>
>
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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