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Showing posts from March 6, 2017
 4 decodes of WD2XSH/17  all -29  2017-03-06 01:26   WD2XSH/17   0.475648   -29   0   FN42pb   0.1   PA0O   JO33hg   5630   49   2017-03-05 23:04   PA0O   0.475602   -30   0   JO33hg   0.2   SV8RV   KM07ks   2042   142   2017-03-05 22:58   PA0O   0.475602   -25   0   JO33hg   0.2   SV8RV/1   KM07ks   2042   142   2017-03-05 22:10   PA0O   0.475601   -27   0   JO33hg   0.2   EA7HPM   IM67xj   2017   214 QTX  and IRF540Z  ( my last one  i smoked 9)  this version has about 2500 pF  G-S  It can run at 5A 22V   with the highest output sofar but at 100W input level everything heaths up coils and IRF the antenna current meter  relative  60-70%   must be close to  100W  rf  the standard IRF540 measured 2700pF this one is second best   about  antenna  50% it is very critical in tuning  the IRF540 starts in self oscillating mode  then the output and current sudden drops to very low I can get 100W level with the QTX but on the edge  and only with the Z ve

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