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WA5VJB makes several log periodics: https://www.wa5vjb.com/products1.html Note, Kent spent a LOT of time developing these antennas. They are made for a specific dielectric constant for FR4/G10. The

There are also available printed LPs with included antenna factors already documented. And.... considerably less $$ than the referenced Amazon units. Just do a www search. Dave -

I use this PC board-based log-periodic antenna for EMI searching: https://www.amazon.com/gp/product/B07NS8M3Y1 To be reasonably useful I put a preamp right on the antenna connector.

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

Hi Charlie, Can I assume G is dBi not dBd Cheers Dave [email protected]> wrote:

Hello Dave I'd be interested to know more about your disc dipole experiment, size and materials etc? A Google search brought up nothing. 73s Tracey G5VU

A better option to the discone is the bicone. Sure, it's larger, but behaves a bit more like the LP over frequency, but without the directionality. For his purpose, the discone may serve as the

I agree 100%, Dave. At least if directionality is the goal. Since the OP originally posted a vertical antenna, I presumed he wanted omni-directionality with flat gain over a large bandwidth. And if

I presume G is gain. Is that in dB or the numerical ratio before the 10log[ratio]? Dave - W?LEV [email protected]> wrote: -- *Dave - W?LEV*

The Schwartzbeck log periodic is by far the better antenna. They offer a far flatter response response and are directional. Directionality allows one to do a better job of finding RF emission

In general, a log-periodic antenna will give flatter gain response over a wide frequency range than will a vertical antenna. But the log-periodic antenna is more directional (in the direction of the

I am asking first about the PCTEL OP451 antenna, but also in comparison with, say, a Schwarzbeck USLP 9143 Log Antenna ( http://schwarzbeck.de/Datenblatt/K9143B.pdf ) As I need the antenna as a mobile

Close... https://www.everythingrf.com/rf-calculators/antenna-factor-calculator

Anybody used PCTEL OP451 ( 450 MHz – 6 GHz, VSWR <2.0:1, 50 Ohm ) wideband antenna with TinySA Ultra ? It is a good match? Anybody had any experience with this one or a similar antenna? Pros and

Well that wasn’t very smart! ?Yes, I’ve found the correct page now - thanks.

You are reading the tinySA basic spec, try the tinySA Ultra spec -- Designer of the tinySA For more info go to https://tinysa.org/wiki

I'm trying to use the signal generator again, as I have many times.? But I'm looking for a bit more power than before.? I see that it is specified (at

Did you read the change log? -- Designer of the tinySA For more info go to https://tinysa.org/wiki

I 'll ask the question in a different way. There are versions in the tiny SA Ultra line ( ZS - 405 , ZS - 406 , ZS - 407 ) that probably differ in hardware. The latest versions of the software are

That's only with the FW release after the introduction of the Ultra+ If you run older FW there is no indication. Just tinySA Ultra, which means ZS405 -- Designer of the tinySA For more info go to