View Single Post
  #212   Report Post  
Old March 30th 07, 08:28 AM posted to rec.radio.amateur.antenna
Richard Clark Richard Clark is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 2,951
Default Revisiting the Power Explanation

On Fri, 30 Mar 2007 02:59:38 GMT, Cecil Moore
wrote:

XMTR--x--1WL 450 ohm line--y--1WL 450 ohm line--50 ohm load


Keith Dysart wrote:
Did you swap x and y in the second last sentence and really mean
"There are reflections to the left of x but no reflections to
the left of y"?


No, a properly calibrated Bird wattmeter will measure
some reflected power to the left of y but zero
reflected power to the left of x.


You clearly have never calibrated a Bird Wattmeter for a 450 Ohm Line
(or any line).

As for this "some" power. "Some" power can be "measured" by any of a
half dozen ways to improperly use instrumentation. It doesn't lift
the gravitas of a "hint" to proof.

Hint: Point x achieves

.... yadda yadda yadda ...
a concept that presently
seems to be beyond your comprehension.


This must be the 80% of correct that is moot.

73's
Richard Clark, KB7QHC