IntenseDebate - John Huggins

4 years ago @ Ham Radio . me - HT Antenna Comparisons · 0 replies · +1 points

Chu-Wheeler limits apply only to passive antennas. The phys.org article refers to active antennas and has been lampooned often in antenna circles for attempting to blur the lines to suggest some new achievement.

4 years ago @ Ham Radio . me - Anatomy of a low frequ... · 0 replies · +1 points

Thanks Alejandro. For english readers, here is the translation from Google Translate...

"Good publication, beautiful AM station, in relation to the lightning protection at the output of the ATU unit (tuning box) between the insulator and the tower, a loop of about 30 centimeters in diameter is added, the separation of the conductor and the Ground arrester is generally 1 millimeter per kW."

4 years ago @ Ham Radio . me - Electrically isolated ... · 0 replies · +2 points

Thanks for recognizing the effort. It did take some work, but is a labor of love for this topic.

The antenna was just above head (6' 2") height to facilitate using my outreached arms to get this conceptual test done. It was just as much about testing the new fangled gear as well as seeing some sort of preliminary result from the EFHW hypothesis. I got both, but now certainly need to redo the test with the dipole much higher using my local ARC for labor. It would have happened last weekend, but for Spring winds and Pandemic. :(

4 years ago @ Ham Radio . me - Of end-feds and feed-l... · 0 replies · +1 points

Thank you much for your observations suggesting some correlation between my simulations and reality. Yours are the first I've seen.

If nothing else falls out of this research, at least users of EFHW antennas have a recipe for logical deployment.

4 years ago @ Ham Radio . me - NMO Mobile Antenna Mou... · 0 replies · +1 points

Roger... for 5 years during college.

5 years ago @ Ham Radio . me - Guidelines on what con... · 0 replies · +1 points

Perhaps I should rephrase it to "Everyone who studies and researches the issue with actual testing and/or statistical analysis agrees..."

"Even if ones eyes are on the road, if brain is not engaged with driving, then that is distracted driving." The data says otherwise.

5 years ago @ Ham Radio . me - Electrically isolated ... · 0 replies · +1 points

I did repeat the experiment with an additional 0.05 WL wire...

https://www.hamradio.me/antennas/adding-0-05-wave...

It still works albeit with some small difference. I need to repeat all these tests again to see how repeatable they are. Plus I will find a volunteer to operate an Antenna/SDR some distance away to compare far field receive power. This to appease not AI3V, but those who might be listening to him.

5 years ago @ Ham Radio . me - Will the real PolyPhas... · 0 replies · +2 points

I have contacted PolyPhaser and they seemed quite surprised. They had to accept their current production documentation, CAD data and my example all agree and show a screw head intrusion problem. Their QC has been notified. I'll update the article with their response once received.

5 years ago @ Ham Radio . me - Superbowl HDTV Antenna · 0 replies · +2 points

This https://patents.google.com/patent/US2918672A/?

I see references to the series connected V shaped elements alluding to the bent structure of the radiators....

"each section comprising three series-connected V-shaped elements arranged in end-to-end relation thereby providing three"

5 years ago @ Ham Radio . me - Slim Jim vs. Tradition... · 0 replies · +1 points

"A J-pole or Slim-Jim is a MEDIA WAVE antenna"
Never heard of "Media Wave" antenna an search turns up little.

"This transmission and coupling line, it is the one that puts it at a disadvantage in performance with respect to a 1/4 antenna with planes"
Please see figure 5.

"they are not used in commercial broadcasters broadcastings"
True. No immunity to mounting structure currents ranks high as a reason.

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