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Adding to the excellent John Cox recording of the N event. Here is what I saw of the Io-B N event from Gainesville, Fl Jupiter was a bit beyond the 3-dB point of my antenna to the East. I also had a

But a catch :)

I have used EZNEC (and ELNEC before that) for a few decades.? It was written by Roy Lewella, W7EL, and for years he sold it at a modest price.? He has now retied, though, and made his latest and

Thanks, Dave, AB7E, for you pointers. I stayed clear of the "high gain" issue as I thought that should be obvious. But, evidently, not so..... Again, thank you. Dave - W?LEV [email protected]>

There is a fundamental dichotomy here in this entire discussion.? While a wide bandwidth dipole may perform adequately for somebody depending upon their criteria, there is no such thing as a high

Yes, EZNEC is an antenna design / evaluation application. Even a 2-wire folded dipole has a nominal feed impedance of 300-ohms and is inappropriate to feed it with 50-ohm coax. Dave - W?LEV

Not the best catch ever. Sabine -- Germany Standard time: UTC +1 hour

Oh darn, only a non-native speaker can do that! I associated the "polar" to the "N-event". :-( Sorry, Tom! Thanks for the tip, Dave! And thanks to Tom pointing out the interesting publication. Sabine

Claudio, Many thanks for the reply.? Please excuse my manners, I should have apologized for not speaking Spanish before launching into? English!! I speak a little Greek, but no Spanish,

Interesting. Thanks. John

But my EZNEC model shows 1.2 kΩ at the feed. That would require a 24:1 broadband transformer plus balun. I don't believe it is useful with 50-ohm coax at all! I sent out the EZNEC analysis earlier

Really nice N event trains of S-bursts, John! -- Dave

Here's some Io-B' followed by some non-Io-A from the 5th. -- Dave

Good evening:? ? ? ? ? non IoA from early this morning. ? ? ?John

Buenos días Chris. Me alegro de tu correo. Estamos hablando de una antena para la recepción de Onda Corta fundamentalmente. También se puede utilizar para transmisión, si uno es radioaficionado

Good evening:? ? ? ? IoB from early this morning. N events included, making the paper that Tom sent very timely. Thanks. ? ? ?John

I modeled your proposed antenna from the sketch using the latest and free version of EZNEC. The parameters I used are as follows: Conductivity: 0.005 S/m Relative Dielectric Constant: 10 (well wateres

Claudio - a few questions:? Is the orientation of the array critical with respect to Jupiter, i.e. should the 3 wires be at 90 degrees to Jupiter? Or just align it east-west with the 3 wires at the

Hi Sabine, I think in Tom's message it's just a non-standard abbreviation for "polarization" -- as in "left-hand circular polarization" -- also seen as "LCP" in the standard abbreviation. -- Dave

Here is an excellent paper on N-Events by Jim Brown, Dave Typinski and Richard Flagg. https://radiojove.gsfc.nasa.gov/library/pubs/docs/SARA-2014_RJ//RJ17_Brown_Jupiter_N_events.pdf Tom