Eaton 94455-1 biconical EMC antenna. Antenna factor ?
"Robert Lacoste" see-alciom-dot-com wrote in message
...
Hello,
I am looking for the antenna factors table for a Eaton 94455-1 biconical
antenna (20MHz to 200MHz). Does someone have a calibration table for a
similar antenna around, or a manual for this antenna model ?
More exactly I have found some K factors for it but they seems wrong,
except if I'm wrong with the units somewhere. I have a table with figures
ranging from "47" (65MHz) up to "59" (200MHz). Assuming these figures are
in dB/m this would give a gain of -44dBi at 160MHz (K = 20 log(F in MHz) -
G - 29.8 isn't it ?). The result is not reasonnable... and not at all
compatible with the measurements.
Are my K factor figures wrong, or is my calculation wrong somewhere ?
Thanks for your help !
Yours,
Robert
A quick look on Google turned up at least one company offering to sell the
instruction manual for this antenna. Might be worth a try.
Fundamentally the value should be close to, but less than a half-wave wire
dipole at the frequency of interest.
Chris
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