1925 Vintage DF Aerial

DF aerial image provided by John Wise
This picture of an MFDF aerial on the liner S.S. Leviathan may be typical of the aerial that was used with Marconi's Marine DF. This picture is dated 3rd January 1925 and came from WELL ILLUSTRATED magazine.
This is the entire antenna mechanism for the 1925 vintage Marconi D/F set. What's not shown is the detector and amplifier electronics. (Image via textbook Practical Radio) 

Contributors and Credits:

1) DF aerial image provided by John Wise <jaceywise(at)apple15.freeserve.co.uk>
2) Lewis Bodkin  <05bodkin555(at)gmail.com>
3) Practical Radio by James Moyer and John Wostrel 1924

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Apr 11/18