BROADCAST TRANSMITTERS                          

DEDICATED TO THE CONTINUED SUPPORT OF RCA BROADCAST TRANSMITTERS

KITS EXCLUSIVE TO 35/50 KW TRANSMITTERS.

MI-563394-1 SCREEN GRID SUPPLY BYPASS KIT.    ISSUED - 5/24/82.

  PURPOSE - TO IMPROVE THE VIDEO BYPASSING OF THE SCREEN AND GRID SUPPLIES.  THIS IS ACCOMPLISHED BY INSTALLING A 10 OHM RESISTOR IN SERIES WITH A 2 UF 2000V CAPACITOR FROM THE VISUAL SCREEN BLEEDER RESISTOR R4 TO GROUND.  ALSO, IN THE AMPLIFIER CABINET, INSTALLING A 4 UF 350 V ELECTROLYTIC CAPACITOR FROM CR13 TO GROUND.

MI-563394-2 THERMOSTAT COMPENSATION KIT.    ISSUED - 10/8/82.

PURPOSE - TO COMPENSATE THE THERMOSTATS FOR RADIATION FROM THE VISUAL CHIMNEY.  THIS IS ACCOMPLISHED BY CHANGING THE CABINET ALARM THERMOSTAT IN THE AMPLIFIER CABINET TO 170 DEGREES F. AND THE SHUTDOWN TO 200 DEGREES F.  ALSO, INTERCHANGING THE TWO THERMOSTATS IN THE POWER SUPPLY CABINET WITH EACH OTHER.

MI-563394-3 VISUAL SCREEN SUPPLY CONVERSION, 120 MA.    ISSUED - 10/20/82.

PURPOSE - TO INCREASE THE SHUT-DOWN TRIP POINT AND THE FOLD-OVER CURRENT-LIMIT SET-POINT OF THE MI-563209 VISUAL SCREEN SUPPLY TO 120 MA.  LATER, A NEW SCREEN SUPPLY MI-563429 WITH A CAPABILITY OF 250 MA WAS INSTALLED IN ALL 35/50 KW TRANSMITTERS.

MI-563394-4 CIRCULATOR COAX, REPLACEMENT KIT.    ISSUED - 2/3/83.

PURPOSE - REPLACES OLD CABLES AT THE VISUAL DRIVER OUTPUT, THE CIRCULATOR TO COUPLER AND CIRCULATOR TO LOAD WITH COAX OF TEFLON DIELECTRIC CONSTRUCTION, TO INCREASE RELIABILITY AND POWER HANDLING CAPABILITY.

MI-563394-5 HIGH POWER SCREEN SUPPLY INSTALLATION KIT.    ISSUED - 4/25/83.

PURPOSE - PROVIDES INSTRUCTIONS AND COMPONENTS NECESSARY TO UTILIZE SCREEN POWER SUPPLY (250 MA) MI-563429 IN A TTG-35/50 TRANSMITTER.

MI-563394-6 CAVITY COMPONENT KIT.    ISSUED - 1/9/85.

PURPOSE - TO REPLACE SEVERAL OF THE CAVITY PLASTIC TUNING RODS AND ONE METAL RING. TO AFFORD IMPROVED MECHANICAL STABILITY IN THE TUNING ASSEMBLIES.

MI-563394-7 METERING RESISTOR KIT.    ISSUED - 2/1/85.

PURPOSE - TO REPLACE THE METERING RESISTOR R11 IN THE AMPLIFIER CABINET, TO INCREASE THE POWER RATING TO 0.5 OHM 190 WATTS.

MI-563394-8 PLATE OVERLOAD SENSOR/METERING RESISTOR KIT.    ISSUED - 8/26/87.

PURPOSE - TO REPLACE THE PLATE OVERLOAD SENSOR A3U1 AND PLATE CURRENT METERING RESISTOR A3R11, FOR IMPROVED RELIABILITY.