Ian Jackson writes
Post by Ian Jackson Post by Bernie
"As it happens, there are clues in the signal itself. Like all
international radio, the Buzzer operates at a relatively low frequency
known as â€œshortwaveâ€. This means that â€“ compared to local radio,
mobile phone and television signals â€“ fewer waves pass through a
single point every second. It also means they can travel a lot further."
Zaria Gorvett graduated with a Bachelor's degree in Biological Science
from the University of Exeter, UK and a Master's in Medical Microbiology
from the London School of Hygiene and Tropical Medicine, UK. Zaria has
traveled extensively, and she has done work with a conservation NGO
based in Tobago.
I'd stick to the biology hen.
I missed Burny's OP as his addy is caught in my privacy.net filter, and
I never read Ian Jackson's stuff, but the last time this subject came
around I offered a PoV after consulting an expert on Soviet systems.
The Soviets/Russians tend not to throw away systems that have been
replaced, moving them instead down the order of priority. In association
with this, they have backups for backups for backups, including for some
systems as the last-but-one stage, HF CW. Of course, there is one major
system of theirs that has undergone fundamental modification, and the
old parts of it couldn't then be integrated into it as the philosophy of
its deployment had changed; they are now in museums.