John,
I am using a 1A thermo-couple meter and 1/2 ratio current transformer
(to get a 4A range) since 2 years on 500kHz, without any problem.
At 500kHz the values it shows are give or take 10%, so it is OK for
tuning the antenna / controlling antenna current but I wouldn't rely
on it for measuring the exact current.
73, Rik ON7YD - OR7T
At 06:41 19/01/2010, you wrote:
Hello....
Can the typical thermo-couple amp meter be placed in the antenna
lead-in. I have had several fail open after a few days use. They were
not close to any metallic grounded objects, or subject to over current.
No lightning
73 John / VE7BDQ (VX9BDQ)
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