[NLRS] Mystery Amplifier!!

[John Oehlenschlager]

I have found an amplifier shown in the attachment.  It is 13.5" x 8" x =
4".   It has a 7 pin terminal strip, pins 1 and 2 are positive power,  3 =
and 4 are negative power.  The remainder are not used.  I don't know =
what the voltage or current requirements are.

The electronics are five parallel transistor amplifiers fed from a power =
divider and combined at the output side.  the transistors are labeled as =
SD 1019-5 or 404120-6.  The vendor is apparently SSM (whoever they are). =
 I have not been able to identify the transistors but they look to be =
about 50 watt units.

There are several numbers on the chassis but no vendor identification.   =
some of the numbers are 12909 assembly 103008, 403974-c and cc120877.

My best guess is that this is for a cellular base station in the 850 to =
900 MHz band.  Any help in identifying the amplifier or the transistors =
would be appreciated. =20

John O.   K0JO



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