PRECISION FREQUENCY SOURCE
MODEL Y-313-16A
FREQ. 160 MHz
INPUT -15 V dc
SERIAL 26539
7039
GREENRAY INDUSTRIES
MECHANICSBURG PA

hand written note:
"pin 1 GND
pin 2 -15V
50mw sine wave
+-.005% @ +15 to +60 C
-15V <= 100ma"

gray painted metal can sodered sma connector
screw stud on each corner 2" square 4" tall