Hi Lynn and Rosie!
Its great to hear from you after a long time!
Incoming signals are received in identical amplitude and phase by each
wire of a two-wire Beverage. The job of the Reflection Transformer is
to convert the in-phase antenna currents into "push-pull" transmission
line currents for transmission back to the feedpoint netrwork of the
two-wire Beverage. The engineering challenge is to preserve the phase and
amplitude balance of the "antenna currents" while at the same time
generating the 180 degree out-of-phase "transmission line currents" for
transmission back to the feedpoint network!
The reflection transformer for far-end termination of a two wire Beverage
is described in detail in Vic Misek's classic "The Beverage Antenna
Handbook" second edition, page 55. The 17th Edition of the ARRL Antenna
Handbook page 13-17 also describes a two wire Beverage with a reflection
transformer termination. The same references describe the
required feedpoint network for a two-wire Beverage.
73!
Frank
W3LPL
donovanf@sgate.com
On Tue, 26 Nov 1996, L. L. Lamb wrote:
> I understand everything but the reflection transformer. Perhaps I just
> missed it in my readings. Do you mind filling me in ...and others as well?
--
FAQ on WWW: http://www.contesting.com/topband.html
Submissions: topband@contesting.com
Administrative requests: topband-REQUEST@contesting.com
Sponsored by Akorn Access, Inc & KM9P
|