[UK-CONTEST] Replacement PA transistor for M. Modules 144/1296 Transverter?

Paul_group paul_group at greenrover.demon.co.uk
Thu Nov 25 09:01:25 PST 2010


On 25/11/2010 16:33, Alex GM3ZBE wrote:
> Hi,
> I'm toying with the idea of taking part in the 23cms UK AC contests so
> I've just been resurrecting a Microwave Modules 144 to 1296 Transverter
> - I last used it in 1988 !  I've discovered that the 2SC1594 PA
> transistor has an open circuit base to emitter junction.  It's probably
> a forlorn hope, but anyone got any idea of a source for a replacement?
> Or a suggestion for an alternative.  The drive transistor is still
> working and gives +21dBm out.  I suppose another possibility might be a
> more modern PA module, 10dB gain would take it back up to the original
> 1.5W level.  I guess cost might be a problem, it's probably not worth me
> spending serious money on such and old unit.
>
> Any suggestions welcome.
> 73
> Alex
>

Alex I'd look at the Mitsubishi RA18H1213G which will be not far of 
saturated output between 10 and 20W with +21dbm of drive.

-- 
73 de Paul GW8IZR IO73TI
http://www.gw8izr.com


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