In message <3.0.5.32.19980325224020.007ab910@pop.global.co.za>, Peter
Hers <peterhrs@global.co.za> writes
>I am repairing a Trans World Electronics T1000 1kW linear amplifier, and
>need to find a source for PT9790 transistors. These were made by TRW,
>which was taken over by Motorola some years back. Motorola tells me that
>the PT9790 was discontinued in 1995, and they no longer have any stock.
>I have considered substitutes, eg: MRF429, but this may cause imbalance
>unless I replace all eight final tr's - could be rather expensive!
>
>Help! Can anyone direct me to a source for PT9790, or provide any other
>advice?
>
I'm sorry to bring gloom but yesterday two suppliers told me that MRF429
has been made obsolete.
What voltage does this amp. run on?
Steve
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