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F6CKE France flag France

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Ham Member Lookups: 2464

 

QSL MANAGER FOR TM40ULIS - QSL VIA REF BURO

COLLINS 618T

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)

 

AM STATION

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

 

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 …)

http://www.araccma.com/

 

HOMEBREW ROTOR

Control unit

 

HOMEBREW HF LINEAR AMPLIFIER

Tested tubes : 3CX1500A7 - YU-158 (3CX1500A7) - YC-257 (3CPX1500A7)

 

 

 

 

 

YC-257 (3CPX1500A7)

 

YC-257 (3CPX1500A7)

 

3CX1500A7

 

 

 

 

 

 

 

 

HIGH TENSION POWER SUPPLY

 

 

 

 

 

 

 

AM STATION PROJECT

Collins 618S-4

Power supply for use with a Collins 618S-4 HF transceiver outputting :
- 27.5 V DC (with ASTEC LPS355 power supply)
- 250V DC
- 600 V DC
- 115 V 400 Hz (with Rotary inverter)
- 6.3 V 400 Hz phase-shifted by 20 ° (for choppers)

Phase shift tests (in French) :

 

 

 

 

 

 

7906975 Last modified: 2017-02-17 09:25:50, 8850 bytes

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