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Old November 1st 08, 06:03 AM posted to rec.radio.shortwave
David Eduardo[_4_] David Eduardo[_4_] is offline
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First recorded activity by RadioBanter: Jun 2007
Posts: 1,817
Default KFI transmitter off the air


"Telamon" wrote in message
...


Ok, Don't call the modules "finals" then but what is the output voltage
to the antenna? I would like to know what the RF current is as the
output is supposed to be 50KW.


Almost all phasors or lines are50 or 52 ohms today.

You know the skin effect will concentrate all the current into the
conductor skin. I wanted to calculate the current density.

I wonder what the power loss is in the hardline from transmitter to
antenna?


The line manufacturers all have specs on loss as a function of frequency.

I expect the parallel solid state design will have much lower voltage
and higher current than older tube designs. It would then follow that
transmitter destruction is more likely to result from connector problems
in a solid state transmitter where the higher voltage tube designs would
result from insulator breakdown or flashover.


It all ends with a match to 50 ohm line at the output fitting on top of the
box.