[GreenKeys] SAQ VLF using 5-bit tape
Duncan Brown
duncanancy at earthlink.net
Fri Dec 24 11:32:48 EST 2021
The annual transmission from SAQ on the 17.2 Kc Alexanderson Alternator
was done this morning. You can watch the startup and transmission on
YouTube: https://www.youtube.com/watch?v=Ecg2UrKvNr8
Alexanderson Alternators operating on around 17 Kc with an antennas 2.5
Km long was the standard for commercial long distance transmissions;
until hams showed you could do it with 5 tubes and a 100ft antenna, 100
years ago this month.
Note that the Morse "wheel" to send the "VVV DE SAQ" was actually done
from a five bit teletypewriter tape. The machine then converted it into
Morse to key the transmitter. Many radio stations would receive news
and telegrams by teletypewriter, but transmit them by Morse. So there
were mechanical machines to do the translations, in both directions.
73 &Seasons greetings.
Duncan
K2OEQ
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