On Fri, 2 Apr 1999 19:13:56 -0500 "brad roope" <w1rqbrad@mdc.net> writes:
>
>Hello:
>
>A friend of mine has one of the first manufactured PT2500 Amplifiers
>manufactured by B&W.
What is the serial # Brad? I sold quite a few of them when I was a B&W
dealer.
I had 2 of the first 10 built by B&W here and made a few changes for them
but they were all in the RF deck.
Plate voltage is "about 3500VDC" ( from the manual) in standby. It will
drop to around 3200V under full load with a stiff 240VAC line.
He would like to know if there were any major
>changes
>made in the power supply. He is not sure of what the Load /No Load
>Plate
>voltage should be. The manual said 3800 Volts, but this was lined out
>and
>it said 3450V Exactly what his meter reads. The actual voltage
>measured
>with a high voltage and a Fluke meter lower.
That sounds like the Viewstar manual. B&W copied it at first and revised
it later.
73 Carl KM1H
>
>I would like to know what the typical power output and plate voltage
>should be for these amplifiers, and if anyone knows if the earlier
>designs
>produced less power output.
1500W nominal on all bands with 100W drive. 10M may be a bit lower if
the customer installed the input assy. In reality, the amp will usually
do 1800W + on most bands.
A real stable amp that was never marketed correctly.
73 Carl KM1H
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