At 23:51 4/6/2005 -0500, you wrote:
>Well Mostly correct there, I've got the power back up, still not full bore,
>but did find out why the power was coming up slowly, it was the exciter, one
>of the coils was loose, fixed it and power back up, but still missing some.
>200 in for 120 out, so not quite there yet.
Time for a Z-matcher or isolator.
Bob NO6B
> Might see about the cables, I
>think they were originally cut for 147 Mhz, might need to be changed to get
>a better match.
A 2 MHz move will not make a difference w.r.t. duplexer cavity
intercabling. If you don't have a Z-matcher or isolator, try changing the
length of the cable between the amp & duplexer. Also remember that when
you insert the wattmeter in line with that cable, you're changing the
length of that cable & hence the impedance the amp sees. IMO these kinds
of loss measurements can only be properly done with an isolator on the amp
output.
Bob NO6B
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