[RFI] 160/80 meter noise; better RX antenna (Horz Waller Flag demo link)

[AA5CT]

Mac,

Here is a presentation they put together awhile back:

https://www.kkn.net/dayton2011/N4ISWallerFlag.pdf

Particular attention has to be paid to the xmission line used
between the two 'flags' and such that 'things' remain 
balanced until after the preamps.

73, de AA5CT Jim

.
.


On Sunday, February 23, 2020, 3:02:48 PM GMT-6, D C _Mac_ Macdonald <k2gkk at hotmail.com> wrote: 







Very interesting demo, Jim, but what I was looking for is info on the Waller antennas  themselves.



  
73 de Mac, K2GKK/5​

Since 30 Nov 1953​

Oklahoma City, OK​

USAF, Retired ('61-'81)​
FAA, Retired ('94-'10)







________________________________ 
From: AA5CT <jwin95 at yahoo.com>
Sent: Sunday, February 23, 2020 14:52
To: Don Kirk <wd8dsb at gmail.com>; Dave Cole <dave at nk7z.net>; D C _Mac_ Macdonald <k2gkk at hotmail.com>
Cc: rfi at contesting.com <rfi at contesting.com>
Subject: Re: [RFI] 160/80 meter noise; better RX antenna (Horz Waller Flag demo link) 
 



Sure thing, Mac.

BTW, I had to view this several times to get full impact of what Jose
was saying and showing, but, it is a good showing of what the Horz
Waller Flag can do to (manmade power line) noise.

https://nam03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DdNBekvzlxgM&data=02%7C01%7C%7Cba59af305e4a41d759f708d7b8a2476b%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637180879423626072&sdata=gEUDRUv5rtJ1V5Tg%2FPStcm6u7DvMHuSEm5aKIfRfB5M%3D&reserved=0

I think what this demonstrates is how line noise sources that
are on the order of 1/2 to several miles away are still factors
when receiving weak DX signals. In quiet conditions his V
and H Waller Flag would be equal in rx sensitivity, maybe with
V a little stronger, but, it is ALL about the S to N ratio and 
a horizontal Waller Flag delivers a better SNR to the receiver,
as observed.

73, de AA5CT Jim


On Sunday, February 23, 2020, 1:02:38 PM GMT-6, D C _Mac_ Macdonald <k2gkk at hotmail.com> wrote: 

How about a link to that "Waller Flag" item?
 
73 - Mac, K2GKK/5​
Since 30 Nov 53)​
Oklahoma City, OK​
USAF, Retired (61-81)​
FAA, Retired (94-10)