QSL MANAGER FOR TM40ULIS - QSL VIA REF BURO
Transceiver Collins 618T-2 modified in 618T-3 by installing a High Voltage Power Supply model A8 (27.5 V DC primary power source). The wiring of the 618T-2 must be modified before installing the High Voltage power supply model A8.
I currently use this transceiver on the 20 m band.
Control unit 714E-2 (USB - LSB - AM)
Receiver : BC312 with DM21-M Dynamotor
Transmitter : ART13 with DY12 Dynamotor
The DY12 Dynamotor was modified to feed the filaments, the relays and the autotune motor with a separate 28 V DC power supply.
BC312 and ART13/DY12 - General view
ART13 - Antenna current and plate current
ART13 - Additional capacitors for 80 m and 40 m bands
Modified DY12 Dynamotor to feed the filaments, the relays and the autotune motor with a separate 28 V DC power supply
Separate 28 V DC power supply to feed the filaments, the relays and the autotune motor
DY12 Dynamotor power supply
Website address of the ARACCMA (association dedicated to amplitude modulation, personal constructions and collectors of old transmitters, receivers …)
HOMEBREW HF LINEAR AMPLIFIER
Tested tubes : 3CX1500A7 - YU-158 (3CX1500A7) - YC-257 (3CPX1500A7)
HIGH TENSION POWER SUPPLY
AM STATION PROJECT
Power supply for use with a Collins 618S-4 HF transceiver outputting :
7906975 Last modified: 2017-02-17 09:25:50, 8850 bytes
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