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denton June 12th 04 07:26 PM

noise bridge readings??
 
I am working on a project to build a switchable impendence balun network to
go between my 450 ohm twin lead and auto antenna tuner, using a Palomar rx
noise bridge.
I am somewhat confused interpretating the noise bridge readings, and the
Palomars book is a bit vague on interpretating the resistance vs the xl and
xc readings.
I guess I should take the readings and plug them into a smith chart..but I
know even less how to interpolate that little beastie.
any help?



Henry Kolesnik June 13th 04 12:42 AM

From memory one control tells you R and the other is Xc or Xl depending
which way from zero. So set it for R then X and keep on till you get no
improvement.

--
73
Hank WD5JFR
"denton" wrote in message
...
I am working on a project to build a switchable impendence balun network

to
go between my 450 ohm twin lead and auto antenna tuner, using a Palomar rx
noise bridge.
I am somewhat confused interpretating the noise bridge readings, and the
Palomars book is a bit vague on interpretating the resistance vs the xl

and
xc readings.
I guess I should take the readings and plug them into a smith chart..but I
know even less how to interpolate that little beastie.
any help?






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