SB-200 input SWR

[k4kgw]

A plate VOLTAGE of 500 ma.?  ma. refers to current, not voltage.  And yes,
150 watts is far more drive than this amp needs.  Other than that cannot
help.

Keith

"John Q." wrote:

> I am new to the list and new to this SB-200.  Running a Yaesu FT1000D
> through a SB-200 with new RF parts (matched) 572b's. All Harbach mods
> are installed.
> I notice that when my internal tuner is turned off and I try to put the
> signal into the active amp, I get extremely high swr. This clamps the
> outgoing signal. I then turn on the 1000's internal tuner and it tunes
> the output such that it is workable with the input of the SB-200.
> Is this a common issue when solid states drive this tube amp?  With 100
> watts tuned for input, I get only >400 watts out of the amp. With 150
> watts driving, I can get 600 or 650 but at a plate voltage of over
> 500ma. Is that plate voltage too high and is 150 watts driving the amp
> an incorrect driving power?
> What can one expect in power (real watts) from an SB-200 driven by a
> modern transceiver?
> Thanks
> Jan Sluchak
>
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