Topband: Topband Digest, Dual loaded loop receiving antenna Historical Evolution

Fri Feb 26 14:02:45 EST 2021

  Add this to your list Jose.

Mark Connelly WA1ION. Describing some Flag RX antenna with Vactrol 
terminating resistance.

https://www.qsl.net/wa1ion/flag/flag_antenna.htm

73

Vic G4BYG

On 26/02/2021 17:00, topband-request at contesting.com wrote:
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> Today's Topics:
>
>     1. Dual loaded loop receiving antenna Historical Evolution
>        (Jose_Carlos)
>     2. Re: Dual loaded loop receiving antenna Historical Evolution
>        (Rick Kunath)
>     3. Re: FW: The WD8DSB mini-flag antenna (LONG!)
>        (Richard (Rick) Karlquist)
>     4. Receiver Equivalent Noise Bandwidth (n4is at comcast.net)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 26 Feb 2021 11:27:50 -0500
> From: Jose_Carlos <N4IS at COMCAST.NET>
> To: CUTTER DAVID via Topband <topband at contesting.com>
> Subject: Topband: Dual loaded loop receiving antenna Historical
> 	Evolution
> Message-ID: <mailman.23.1614358812.18813.topband at contesting.com>
> Content-Type: text/plain; charset="utf-8"
>
>
> Hi guys
>
> This is a collection of paper I was able to put together, please it is a working in progress and new entries are welcome. My  eye is not doing well and it is hard for me to type, so this is a copy and paste.
>
>
> 1919
>
> March 5, 1919, Roy A. Weagant, Chief Engineer of the Marconi Wireless Telegraph Co. of America, delivered a paper describing in detail his apparatus for the elimination of the great bug-bear of transoceanic wireless communication --static interference. >>
>
> http://infoage.org/html/wa-1919-04-p11.html
>
> 1938
>
> Harold Beverage invented wide band receiver antenna, loaded loop. The present invention relates to short wave antennas and, more particularly, to antennas for receiving horizontally polarized waves over a wide band of frequencies. An object of the present invention is to enable the reception of horizontally polarized signals over a wide band of frequencies such-as is at present used in television.
>
> https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US2247743.pdf
>
> 1940.
>
> Nearly all the newly re-invented compact receive antennas derive from the terminated loop, the earliest reference was in an appallingly mimeographed prewar training manual of W3EEE Dad?s
>
> 1973
>
> COMMUNICATIONS 74 CONFERENCE BRIGHTON Wednesday, June 5 1974 ?Session 5 Equipment Design Paper 5.3: Loop Antennas for HF Reception Contributed by: B.S. Collins, C & S Antennas Ltd.,
>
>   1995
>
> JF1DMQ wrote an earlier article about the Flag antenna in November 1995 in a Japanese magazine. His was only 3.3 feet by 16.4 feet long (1 by 5 m). K6SE's 160m optimized versions are 14 by 29 feet (4.3 by 8.8m).
>
> 1995
>
> "Is This EWE for You?" (QST February, 1995, p.31) and "More EWES for You",
> QST January, 1996, p. 32) both by WA2WVL.
>
> 1996
>
> The Pennant was originated by EA3VYand optimized for 160 meters by K6SE, who first wrote about them on the Top Band Reflector in 1998
>
> 1997
>
> The K9AYTerminated Loop?A Compact, Directional Receiving Antenna By Gary Breed, K9AY
>
> 1998
>
> W7IUV rotatable Flag and preamplifier >> http://w7iuv.com/
>
> 2000
>
> QST Magazine, July 2000, page 34 for K6SE's classic article:
> "Flags, Pennants, and Other Ground-Independent Low-Band Receiving Antennas" ...
>
> 2003
>
> NX4D developed the first dual flag vertical array
>
> 2006
>
> N4IS  developed the BIG flag vertical array
>
> 2008
>
> N4IS developed the Horizontal flag array
>
> 2009
>
> Dr Dallas Lankford, wrote the Flag Theory and design the Quad Flag Array >> Dallas  Files The Dallas Files are now found here: http://groups.yahoo.com/group/thedallasfiles2
>
> 2009
>
> AA7JV George Wallner developed the DHDL (TX3A) >> http://tx3a.com/docs/TX3A_DOUBLE_HALF_DELTA_LOOP.ZIP
>
> 2009
>
> DOUBLING the Double Half-Delta Loop Receiving Antenna
> by Pierluigi?Luis? MansuttiIV3PRK >>
>
> http://www.iv3prk.it/user/image/..-rxant.prk_tx3a.pdf
>
>
>
> Please add new papers
>
>
> 73?s
> JC
> N4IS
>
> Sent from Mail for Windows 10
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 26 Feb 2021 11:35:14 -0500
> From: Rick Kunath <k9ao at yahoo.com>
> To: Jose_Carlos <N4IS at COMCAST.NET>,	CUTTER DAVID via Topband
> 	<topband at contesting.com>
> Subject: Re: Topband: Dual loaded loop receiving antenna Historical
> 	Evolution
> Message-ID: <9fa3ca98-99ac-f952-0643-11a1245e6e63 at yahoo.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> JC,
>
> Thanks for posting this.
>
> That first link doesn't work, it comes up article not found. The W7IUV
> link is down also.
>
> The Dallas Lankford files have been removed (by request) and that Yahoo
> link is not valid any longer, but there are complete sets of his papers
> floating around on the Internet still.
>
> Just wanted to mention that.
>
> Rick Kunath, K9AO
>
> On 2/26/2021 11:27 AM, Jose_Carlos wrote:
>> Hi guys
>>
>> This is a collection of paper I was able to put together, please it is a working in progress and new entries are welcome. My  eye is not doing well and it is hard for me to type, so this is a copy and paste.
>>
>>
>> 1919
>>
>> March 5, 1919, Roy A. Weagant, Chief Engineer of the Marconi Wireless Telegraph Co. of America, delivered a paper describing in detail his apparatus for the elimination of the great bug-bear of transoceanic wireless communication --static interference. >>
>>
>> http://infoage.org/html/wa-1919-04-p11.html
>>
>> 1938
>>
>> Harold Beverage invented wide band receiver antenna, loaded loop. The present invention relates to short wave antennas and, more particularly, to antennas for receiving horizontally polarized waves over a wide band of frequencies. An object of the present invention is to enable the reception of horizontally polarized signals over a wide band of frequencies such-as is at present used in television.
>>
>> https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US2247743.pdf
>>
>> 1940.
>>
>> Nearly all the newly re-invented compact receive antennas derive from the terminated loop, the earliest reference was in an appallingly mimeographed prewar training manual of W3EEE Dad?s
>>
>> 1973
>>
>> COMMUNICATIONS 74 CONFERENCE BRIGHTON Wednesday, June 5 1974 ?Session 5 Equipment Design Paper 5.3: Loop Antennas for HF Reception Contributed by: B.S. Collins, C & S Antennas Ltd.,
>>
>>    1995
>>
>> JF1DMQ wrote an earlier article about the Flag antenna in November 1995 in a Japanese magazine. His was only 3.3 feet by 16.4 feet long (1 by 5 m). K6SE's 160m optimized versions are 14 by 29 feet (4.3 by 8.8m).
>>
>> 1995
>>
>> "Is This EWE for You?" (QST February, 1995, p.31) and "More EWES for You",
>> QST January, 1996, p. 32) both by WA2WVL.
>>
>> 1996
>>
>> The Pennant was originated by EA3VYand optimized for 160 meters by K6SE, who first wrote about them on the Top Band Reflector in 1998
>>
>> 1997
>>
>> The K9AYTerminated Loop?A Compact, Directional Receiving Antenna By Gary Breed, K9AY
>>
>> 1998
>>
>> W7IUV rotatable Flag and preamplifier >> http://w7iuv.com/
>>
>> 2000
>>
>> QST Magazine, July 2000, page 34 for K6SE's classic article:
>> "Flags, Pennants, and Other Ground-Independent Low-Band Receiving Antennas" ...
>>
>> 2003
>>
>> NX4D developed the first dual flag vertical array
>>
>> 2006
>>
>> N4IS  developed the BIG flag vertical array
>>
>> 2008
>>
>> N4IS developed the Horizontal flag array
>>
>> 2009
>>
>> Dr Dallas Lankford, wrote the Flag Theory and design the Quad Flag Array >> Dallas  Files The Dallas Files are now found here: http://groups.yahoo.com/group/thedallasfiles2
>>
>> 2009
>>
>> AA7JV George Wallner developed the DHDL (TX3A) >> http://tx3a.com/docs/TX3A_DOUBLE_HALF_DELTA_LOOP.ZIP
>>
>> 2009
>>
>> DOUBLING the Double Half-Delta Loop Receiving Antenna
>> by Pierluigi?Luis? MansuttiIV3PRK >>
>>
>> http://www.iv3prk.it/user/image/..-rxant.prk_tx3a.pdf
>>
>>
>>
>> Please add new papers
>>
>>
>> 73?s
>> JC
>> N4IS
>>
>> Sent from Mail for Windows 10
>>
>> _________________
>> Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
>
>
> ------------------------------
>
> Message: 3
> Date: Fri, 26 Feb 2021 08:46:50 -0800
> From: "Richard (Rick) Karlquist" <richard at karlquist.com>
> To: john.kaufmann at verizon.net, topband at contesting.com
> Subject: Re: Topband: FW: The WD8DSB mini-flag antenna (LONG!)
> Message-ID: <9180c166-149a-fa6a-a4d4-cc3a2a9fd9da at karlquist.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
>
> On 2/26/2021 7:31 AM, John Kaufmann via Topband wrote:
>> I think there may be some semantic confusion over the term "averaging" and
>> how averaging affects noise when making spectral measurements, so let me
>> clarify what I mean.  My comments are specific to the P3 but are fairly
> Averaging is a nice technique that mitigates the poor sensitivity
> of the mini-flag, but only for "bright lines" due to power
> supplies, etc.  I would be surprised if it would do anything
> to improve DF'ing power line noise, which is clearly a major
> application domain.
>
> 73
> Rick N6RK
>
>
> ------------------------------
>
> Message: 4
> Date: Fri, 26 Feb 2021 11:59:58 -0500
> From: <n4is at comcast.net>
> To: <topband at contesting.com>
> Subject: Topband: Receiver Equivalent Noise Bandwidth
> Message-ID: <016d01d70c60$d13d7ae0$73b870a0$@comcast.net>
> Content-Type: text/plain;	charset="us-ascii"
>
>    Here the procedure I used to measure my receiver equivalent bandwith to
> calculate NF.
>
> https://www.owenduffy.net/measurement/enb/MeasureIfBw.htm
>
> SpecrunLab is also a very good tool to  measure EBW
>
> https://www.owenduffy.net/measurement/enb/MeasureIfBw2.htm
>
>
> JC
> N4IS
> 73's
>
>
>
>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
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> ------------------------------
>
> End of Topband Digest, Vol 218, Issue 22
> ****************************************