Hi Jens

Thank you for the link to the book.

Re: “How can the “SAQ team” determine that one of the 6 leads is out of tune?”

If the antenna is operating correctly, the currents in each download should have a similar magnitude and be substantially in phase. Monitoring the downlead currents would, in principal, tell you if there is a fault. I do not know if the SAQ team monitor downlead current during operation.

The following blog on Alexanderson and the Grimeton antenna system might be of interest: https://www.plextek.com/giants-and-small-antennas/

Best regards

Marcus

Hi,
I found this book at “archive,org” :
“Technical Description Of The Alexanderson System For Radio Telegraph And Radio Telephone Transmission
by Bucher, Elmer Eustice”

There are a lot of detailed information in this book to find.
There is also shown a drawing where voltages and currents are matched in individual antennas of
the multiple tuned Antenna.

I find it impressive that the Alexanderson antenna requires “only” 180 KW in comparison to a “Marconi flat top” antenna, which would require 1330 KW.

A less specific question for me is:
How can the “SAQ team” determine that one of the 6 leads is out of tune?

by,
Jens