My goal is to have a "good-enough" and cost-effective antenna for the 600 MHz - 6 GHz spectrum
As a probe for scanning how the spectrum is occupied and at what power levels are the signals.
I think I need an Isotropic/omnidirectional probe, as I am not really interested in "finding" the source.
I don't know how much the Schwartzbeck log periodic antenna cost, in what price range it sits?
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Regarding TinySA Ultra, with any of the mentioned antenna, I must use TRACE > CALC > TABLE TRACE (and save it to SD)?
And create a trace containing a 8 point linear interpolation of the AF versus frequency from the antenna gain graph
I can calculate/estimate AF from the gain graph here: https://www.everythingrf.com/rf-calculators/antenna-factor-calculator
Is it ok(ish) to "approximate" the 20 points graph to only 8 points in the TABLE TRACE?
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Also, looking at the Narda SRM-3006 probe (E Field Probe 27MHz - 3GHz), it could also have vertical polarization like my above-mentioned PCTEL OP451?
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Is there something I must know about the (big?) differences between measuring E-field (Narda) and scanning the signals power levels (dBm or Watts)?
At the moment I have this as a starting point:
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source: 2
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And, as I only receive/measure "in the air" and don't know the emitting antenna's aperture, how can I go from there?
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