TYPE TCF POWER LINE CARRIER FREQUENCY-SHIFT TRANSMITTER EQUIPMENT - 3 FREQUENCY -10 WATT / 1 WATT / 10 WATT
TYPE TCF POWER LINE CARRIER FREQUENCY-SHIFT TRANSMITTER EQUIPMENT-1 WATT/10 WATT FOR ALL RELAYING APPLICATIONS
TYPE TCF POWER LINE CARRIER FREQUENCY-SHIFT TRANSMITTER EQUIPMENT -10 WATT/10 WATT FOR ALL RELAYING APPLICATIONS
TYPE TCF POWER LINE CARRIER FREQUENCY-SHIFT RECEIVER EQUIPMENT-TRANSFER TRIP
TYPE TCF POWER LINE CARRIER FREQUENCY-SHIFT RECEIVER EQUIPMENT- WITH RELAY OUTPUT FOR SUPERVISORY CONTROL AND TELEMETERING
TYPE TCF POWER LINE CARRIER FREQUENCY SHIFT RECEIVER EQUIPMENT FOR DUAL PHASE-COMPARISON CARRIER RELAYING
TYPE TCF-10 POWER LINE CARRIER FREQUENCY SHIFT RECEIVER EQUIPMENT FOR DUAL PHASE - COMPARISON CARRIER RELAYING (SPCU, SKBU, OR SIMILAR SYSTEMS)