Johnson Matchbox 250-24 VSWR Bridge Head

February 24th 07, 05:35 PM posted to rec.radio.amateur.antenna

harry

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First recorded activity by RadioBanter: Feb 2007

Posts: 3

Johnson Matchbox 250-24 VSWR Bridge Head

I have recently purchased two different VSWR Bridges.

One was made by Johnson.

The second is a clone.

Both use a fifty ohm resistor in series with the signal path. This
strikes me as a lossy setup. Is there a theory of operation posted or
a text which can explain the operation of the bridge?

Thanks

Harry

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