On Mon, Mar 20, 2023 at 4:43 PM Ed Cole <[email protected]> wrote:

Is this the antenna (type)?
https://www.thebdr.net/wp-content/uploads/2020/06/high-efficiency-broadband-plain-english.pdf

Would require nearly an acre base at 630m.

73, Ed - KL7UW

On 3/20/2023 11:11 AM, Dave Riley via 600MRG wrote:
> 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
>> <[email protected]> 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. <[email protected]>
>>> 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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>
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