SB SPCL @ ARL $ARLX021
ARLX021 Christmas Eve SAQ Alexanderson Alternator Transmission Set

ZCZC AX21
QST de W1AW
Special Bulletin 21  ARLX021
> From ARRL Headquarters
Newington CT  December 22, 2016
To all radio amateurs

SB SPCL ARL ARLX021
ARLX021 Christmas Eve SAQ Alexanderson Alternator Transmission Set

The Alexander Association has announced that it plans to have Alexanderson
alternator transmitter SAQ on the air for its traditional Christmas Eve
transmission. The 200 kW Alexanderson alternator will transmit on 17.2 kHz on
the morning of Christmas Eve, December 24, starting with transmitter tune-up at
 around 0730 UTC. The message transmission will take place at 0800 UTC.

"Since the plant is old, there is always the risk that the transmission will be
 cancelled on short notice," the Association said in an announcement. Repairs
following an early October fire in the longwave antenna, attributed to arcing,
had put the Christmas Eve transmission in jeopardy this year.

Dating from the 1900s, the Alexanderson alternator - essentially an AC
generator run at extremely high speed - can put out 200 kW but typically is
operated at less than one-half that power level. Once providing reliable
transatlantic communication, it is now a museum piece and only put on the air
on special occasions. It was built in the 1920s.

Christmas Eve activity will also take place on Amateur Radio frequencies from
SK6SAQ on or about 7.035 and 14.035 MHz (CW). Send reception reports of SAQ or
SK6SAQ via email at, info@alexander.n.se .

NNNN
/EX

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