[Amps] Pineapple UHF SSPA Board/heat Sink Assys, BLF 872, BLF 861A, MRF377, LQ801

[Patrick Barthelow]

Saturday, Pineapple Technology near our Radio Club's coffee shop had  a big house cleaning.  They are a big commercial Solid StateTV transmitter  Manufacturer.  So I went over to see what was being hauled out the door....Turns out Lots of goodies. but I am over my head here, but have an interest in EME QRO components, and a build for TX EME on 432 and 1296.  Among the 100 lbs or so of aluminum heat sinked boards are a number fully populated, that use pairs of Motorola BLF 872s, LDMOS devices for which the data Sheets show 300W capability/device between 470 and 800 mHz.  The engineer there said these were tuned to 470mHz. and run on 28-32 VDC.   
There were several heat sinked board arrays with a square duct layout with huge heat sinked fins inside the duct, with huge fans to pump air.
The many boards had active devices of:  BLF 861A, BLF 872, MRF377, Polyfet LQ 801  BTW they still have a 50 KW fan cooled roll around Bird Dummy Load for sale at $500.

Also tossed and picked up,  were numerous 32V 75 amp power supplies some working, some dead on arrival, according Pineapple Q/A.    I am interested in learning how to take these boards to 432 for High Power EME Transmitters.   Are there any good tutorials on tweaking these high power RF amps?  The board layouts seem to closely match the Motorola/Freescale Semi Dwgs, and applications notes.  Any ham SSPA experts near Sacramento California that can tame these beasts?  

Best Regards,   
Pat  AA6EG
 apolloeme at gmail.com,  apolloeme at live.com