TT:
If I recall correctly, Mike and Jim have their own range,
with the unit under test on one tower, and an HP spectrum
analyser connected to a dipole on another tower, many
wavelengths distant. Tower heights were on the order of
60'. A calibrated attenuator was used with the SA.
The testing methodology was described on their website,
back when they sold me the 3 el, 3 years ago now.
Comments regarding narrowbanded antennas, current,
drive point impedance and fwd gain, all noted.
Theoretically, the steppIR could be a bit better
than a canonical yagi...in practice, it's hard to tell,
because the differences are too small to matter.
But it IS fun to talk about.
n2ea
jimjarvis@ieee.org
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See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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