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Old September 17th 03, 10:32 PM
M. J. Powell
 
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In message ,
Richard Harrison writes
Richard Clark wrote:
"Has anyone here actually measured SWR without using a diode?"

I did something similar and could have used the same rig to measure SWR
in a feedline.

I used a wire loop which included a thermoammeter suspended from a
horizontal antenna element. I pulled this along the element to measure
its current distribution using a long tow rope and a telescope.

Pulled along a transmission line wire, this would have produced the
currents at the minima and maxima along the wire. From these we could
calculate SWR.


This was a common task for the students at Marconi College in the 50's.

The meter was read with binoculars.

Mike
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M.J.Powell
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Old September 17th 03, 11:26 PM
Richard Harrison
 
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Mike Powell wrote:
"This was a common task fot the students at Marconi College in the
`50`s."

The student practice had a commercial application. It was in the same
decade but at a different locale. It was during the tune-up of a SW
broadcast curtain array near Lisbon, Portugal.

Best regards, Richard Harrison, KB5WZI

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