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On the thread "...Making a Q meter":

On 8/10/2022 15:42, Dr. David Kirkby, Kirkby Microwave Ltd wrote:

if you look at the description of the group

/g/Test-Equipment-Design-Construction

In reviewing the listed subjects, I would like to query the group on relatively simple "Electric field strength" measurements.

I have successfully made measurements in the past utilizing Tektronix 2700 series spectrum analyzers, but I would be interested in less costly ways to compare HF and VHF antennas to a dipole standard.

In my retirement years, I no longer have such available to me.

I am aware of the need for 5 to 10 wavelengths separation between the tested and sampling antennas, as well as ground reflections, for electric field tests. Also simple diode detectors with DC amplifiers, are seldom linear, nor are the input impedances, reliable for accurate comparisons, utilizing a calibrated attenuator for "A" and "B" comparisons.

Anyone have something to offer on the subject?
Ray, W4BYG


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