TRANSFORMER TF1RX17YY MICROTRAN
MILITARY STANDARD AUDIO TRANSFORMER

TRANSFORMERS FROM TF1RX SERIES BUILT TO MIL-T-27A GRADE A CLASS R TEMP
MAX OPERATING ALTITUDE 50,000 FEET

NO MFR DATA THIS PART - FOLLOWING FROM ACTUAL SAMPLES

MARKINGS:

     MICROTRAN M2470 
        TF1RX17YY
   1,2 75 OHMS  55MA DC
     3,4 300 OHMS  0DC
     5,6 600 OHMS  0DC
         400-4000 CY
           0DBM

PHYSICAL:

   HERMETICALLY SEALED
   CYLINDRICAL METAL CASE 1.3125" (33.33MM) OD 
   NAVY/AIR-FORCE GRAY PAINT - BLACK PRINTING
   HEIGHT ABOVE MOUNTING SURFACE 1.625" H
   SQUARE METAL FLANGE MOUNT 1.375" SQUARE
   MOUNTING HOLES ALL FOUR CORNERS 0.125" D
   CORNERS ROUNDED 0.125" R
   BELOW MOUNTING SURFACE WITH 1" D HOLE
   TERMINALS 6 CERAMIC ISOLATOR STAND OFF WITH SOLDER LUG

WINDINGS:

   THREE ISOLATED WINDINGS

   1-2 75-OHM NOM / DCR=~3.5 OHMS / DC OKAY TO 55MA

   3-4 300-OHMS NOM / DCR=16.25 OHMS / NO DC

   5-6 600-OHMS NOM / DCR=24.0 OHMS / NO DC


MEASURED RESPONSE WITH SINGLE ENDED CLASS A DRIVE TRANSISTOR BIASED TO 
IDLE AT 50MA FROM A 24VDC SUPPLY (USING A NEVE B183AM CARD IN HIGH POWER 
MODE... BECAUSE IT WAS CONVENIENT)... OVERALL GAIN SET TO 30DB. TAKING
OUTPUT FROM 600 OHM TERMINALS AND TERMINATED 600 OHMS

LINEARITY +/- 2DB 50HZ TO >25KHZ 
THD 0.035% 1KHZ AT +14DBM