[Amps] Salt water dummy loads

[David Cutter]

Sea water freezes around 1.25 to 1.5C depending on depth and is about 5% 
"salt" if I remember rightly, ie much more than your dummy load which will 
still freeze at about the same as tap water.  It will grow algae unless you 
put something in it, but that will alter the resistance, so do that first. 
Keep it cool and in the dark and that will slow the growth.  I suggest a 
dark container, not clear glass.  This is from my experience in the vending 
trade, I'm not a chemist.

Since the electrodes are passing ac, not dc, I'm guessing that on each half 
cycle there will be recombination.  It's cheap enough to replace the water 
and electrodes at regular intervals, just keep checking the swr I suppose 
and don't run it too hot.

David
G3UNA


> Jim Thomson wrote:
>> 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