Re: LF: Re: Screening an LF Loading Coil

[Paul Nicholson <vlf0403@abelian.org>]

Takes me back to the 1970's when I was a student working for
Gerald David at Aerial Facilities in Chesham building these
things -

 http://www.ingenia.org.uk/Ingenia/Articles/240

which worked incredibly well thanks to the ingenuity of some
people at Bradford Uni who designed the adjustable center
conductor of the cavity so that the overall temperature
coefficient of the 'barrel' as we called the cavities, was close
to zero.   Bandwidths of a few kHz at VHF with insertion loss
of less than 1dB were normal.

Gerald was a wonderful larger than life character, I could
relate many stories about life at AFL in those days - not
least Gerald's specialised driving techniques applied to the
country lanes of Buckinghamshire.  There were many jokes about
ensuring the barrels were empty and Friday lunchtimes at the
pub were generally devoted to that.

--
Paul Nicholson
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