[600MRG] Radio engineer Grady Motes and the HEBA efficient small size medium wave antenna

[Dave Riley]

The KDKA wire cage was the standby TX antenna @ KDKA, 50s 60s 70s

The transmission line was 4 wires in a square fed alternately and cross 
connected along the way from the TU to the vertical section of a 6 wire 
cage all spaced and insulated with the top and bottom of this 50' 
vertical run each connected to 6 wire horizontal elements.
At least that is what I remember..

Draw a capital H on it's side fed smack in the middle of the 'H'.. 
Imagine 2 wire feed, then build a 3' or so circular cage on the top, 
bottom, and vertical feed.. Anyway it was a DX maker...

73s


On 3/20/2023 2:28 PM, D.J.J. Ring, Jr. wrote:
> Wanting to know more about the KDKA cages, I emailed Tom W3WGM, and he 
> replied:
>
> Sorry Dave, but it was not me. I was CE at KDKA in the late 70's but 
> never did any papers on antennas.
> Tom, W3WGM
>
> Maybe he just talked about it to you?
>
> 73
>
> David N1EA
>
> On Sat, Feb 18, 2023, 17:21 Dave Riley via 600MRG 
> <600mrg at mailman.qth.net> wrote:
>
>     I see a loop antenna here, albeit an 'E' loop sitting on it's own
>     insulated above ground platform..
>
>     You can also see it as a top loaded vertical..
>
>     To me it makes the most sense to feed just like that and
>     above/away from lossey ground..
>
>     The first thing is that you pick up 3 db just for not feeding half
>     the power in to ground radials..
>
>     Two paws up on this one.. Plus the big fat vertical part is
>     relatively ultra low 'R' where most of the current is..
>
>     The effective height is probably a pretty good number too..
>
>     It would be the best mobile antenna to ever crown the WA1HLR
>     cadaverlac, yessir a mighty pretty 160m mobile antler fer sure..
>
>     I'll see your king and raise you one solid 6" copper strap
>     vertical 'I' loop and get two nulls for free to protect those
>     other AM stations and therefore allow you to run MORE power..
>
>     Yanks come up with the darndest things!!
>
>     Next time, see the old wire cage vertical @ early KDKA and what it
>     did on 1020 kc...
>     Tom Monahan W3WGM has the whole story on that one.. WOWZA
>
>     73s de Dave @ 1a/W1FRV   Loud and Clean on the East Coast..
>
>
>     On 2/18/2023 2:34 PM, Dick Bingham wrote:
>>     Hi
>>
>>     Possibly interesting. I started watching the video and quit after
>>     maybe 5-minutes.
>>     Talking-heads BS !!
>>
>>     I located this Patent Office info  for the HEBA antenna ===>
>>     *https://uspto.report/patent/grant/10,461,430*
>>
>>     that may have more useful info.
>>
>>     73 Dick/w7wkr at CN97uj
>>
>>     On Sat, Feb 18, 2023 at 1:40 AM D.J.J. Ring, Jr. <n1ea at arrl.net>
>>     wrote:
>>
>>         Radio engineer Grady Motes and the HEBA efficient small size
>>         medium wave antenna.
>>
>>         https://youtu.be/TY1TArbqEfI
>>
>>
>>         Pleasing Audio Processing with Mike Erickson - TWiRT Ep. 444
>>
>>
>>         Description
>>
>>         The HEBA - AM's Real Estate Relief - with Grady Moates -
>>         TWiRT Ep. 460
>>
>>         TWiRT - This Week in Radio Tech
>>
>>
>>         Grady Moates is a “hands-on” broadcast engineer. Known widely
>>         for his audio processing expertise, Grady’s attention has
>>         more recently been on proving the performance of a novel
>>         antenna design. The High Efficiency Broadband Antenna (HEBA)
>>         - after years of additional research and real-world testing
>>         and proving - is now FCC approved. Grady explains how a HEBA
>>         help AM stations, especially those with real-estate
>>         opportunities.
>>
>>         Show Notes:
>>
>>         HEBA (High Efficiency Broadband Antenna) Specs
>>         http://worldwideantennasystems.com/sp...
>>
>>         HEBA antenna under construction
>>         http://worldwideantennasystems.com/news/
>>
>>         Photos, diagram, and rendered video of HEBA antenna
>>         https://photos.app.goo.gl/9qvPVBHUmXr...
>>         ...more
>>
>>         TWiRT - This Week in Radio Tech
>>         2.33K subscribers
>>         Videos
>>         About
>>
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