STONE CREEK 1000 SOLID STATE AMPLIFIER

                               BY

                            W4NFR
 

THIS AMPLIFIER IS A SOLID STATE 1000 WATT HF AMPLIFIER.
IT REQUIRES 4-10 WATTS OF RF DRIVE FOR 1 KW OUTPUT.
THE TRANSISTORS ARE (4) VRF-2933 DEVICES. IT FEATURES
HEAT SENSING. I ADDED A THERMOMETER TO MEASURE THE
TEMPERATURE.

THERE ARE TWO 4" FANS TO PUSH AND PULL AIR THRU THE HEAT
SINK TUNNEL AT A 100 CFM AIR FLOW RATE. THERE IS A SEPERATE
SWITCH FOR EACH FAN.

THE AMP FEATURES A SINGLE ON/OFF SWITCH  WHICH ACTIVATES
A CONTACTOR RELAY FOR THE MAIN POWER ON. THE OTHER SWITCH
IS TO ENABLE OR DISABLE THE AMPLIFIER.

THERE IS SMALL THERMOMETER TO INDICATE THE HEATSINK TEMP.

THERE IS A 6 BAND DIPLEXER FILTER TO PROTECT THE OUTPUT
DEVICES. ANY REFLECTED POWER IS SENT TO A BUILT - IN DUMMY
LOAD. EACH BAND IS SELECTED VIA A FRONT PANEL BAND SWITCH.
THERE IS A LED INDICATOR FOR EACH BAND SELECTED.
 

 
 

THIS IS THE 6 BAND DIPLEXER RF FILTER FROM R3KBO. VERY WELL MADE AND
WORKS EXTREMELY WELL. I ADDED BNC CHASSIS CONNECTORS FOR THE IN
AND OUTPUT.

 
 

BELOW IS THE ACTUAL POWER AMPLIFIER, MOUNTED ON THE COPPER HEAT SPREADER
AND THE ALUMINUM HEAT SINK. AVAILABLE FROM R3KBO ON EBAY. IT IS A VERY WELL
MADE AMPLIFIER.

 

THIS IS AN END VIEW OF THE ALUMINUM HEAT SINK TUNNEL

 

TOP VIEW OF THE STONE CREEK 1000 AMPLIFIER
THERE IS A BNC CHASSIS CONNECTOR AT THE OUTPUT.

SIDE VIEW OF AMP PALLET MODULE WITH FANS ON INPUT AND OUTPUT FOR COOLING

 

METER TO MONITOR THE 50 VDC POWER SUPPLY VOLTAGE
 

 
 

INTERIOR CONSTRUCTION

INSIDE THE FRONT PANEL

REAR VIEW DURING CONSTRUCTION PLUS AIR INTAKE GRILL

SIDE VIEW SHOWING THE MEAN WELL POWER SUPPLY

THE MEAN WELL POWER SUPPLY SWINGS OUT FOR MAINTENANCE
 

RF IN AND OUT VACUUM RELAYS PLUS THE BIAS KEYING RELAY

I ADDED BNC CHASSIS CONNECTORS FOR THE RF IN AND OUT OF DIPLEXER FILTER

 

SIDE VIEW OF PS FILTER, WHICH CAN SWING OUT FOR MAINTENANCE
 

FRONT AND SIDE VIEW OF AMPLIFIER UNDER CONSTRUCTION

50 VDC HOOKUP FOR THE AMPLIFIER
 

AC POWER ON/OFF RELAY
 

3 DB RF INPUT PAD. THIS IS TO INSURE A 50 OHM INPUT LOAD AND CUT THE INPUT POWER IN HALF

TOP AIR INLET FOR FANS

BELOW IS THE SCHEMATIC DIAGRAM FOR THE AMPLIFIER

 
 
 

-THE END-