At 09:54 PM 1/10/2007, Roger Parsons wrote:
>... "When the Navy (I believe it was) and their
>contractors developed coax and the resulting
>connectors for use on board their ships they named
>them UHF" ...
>And a little Googling will show that the US Navy
>developed neither coax nor 'UHF' connectors!
>Coaxial cable: Herman Affel (1893-1972), Lloyd
>Espenschied (1889-1986): AT&T Bell Telephone
>Laboratories, 1929. (Siemens and Tesla had both also
>earlier patented the concept, but did not describe the
>application for radio frequencies.)
And, even earlier than that (1850s) Kirchoff described the
propagation charateristics in a coaxial transmission line as being a
case of a second order differential equation based on Kelvin's
observation that propagation might be similar to the diffusion
equation. Sometime later Heaviside formulated a generic version of
the transmission line equations derived on Maxwell's equations.
So, coaxial lines, in at least some forms, antedate Affel's work.
>UHF Connector: E. Clark Quackenbush - 'Invented in
>the 1930's' - Amphenol
>The all-new Yahoo! Mail goes wherever you go - free your email
>address from your Internet provider. http://uk.docs.yahoo.com/nowyoucan.html
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