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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+Ground\s+conductivity\s*$/: 35 ]

Total 35 documents matching your query.

21. Re: Topband: Ground Conductivity (score: 1)
Author: Dave Cuthbert <telegrapher9@gmail.com>
Date: Tue, 24 Mar 2020 05:45:48 -1000
Albert Einstein: You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly t
/archives//html/Topband/2020-03/msg00319.html (9,390 bytes)

22. Re: Topband: Ground Conductivity (score: 1)
Author: GGLL via Topband <topband@contesting.com>
Date: Tue, 24 Mar 2020 12:56:43 -0300
How do they measure that kind of conductivity in mS?, is it the same method as when you measure soils for safety (mains), or lightning discharge ground?. Regards Guillermo - LU5WE. El 23/3/20 a las 2
/archives//html/Topband/2020-03/msg00320.html (10,876 bytes)

23. Re: Topband: Ground Conductivity (score: 1)
Author: <marsh@ka5m.net>
Date: Tue, 24 Mar 2020 11:06:53 -0500
"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you
/archives//html/Topband/2020-03/msg00321.html (9,703 bytes)

24. Re: Topband: Ground Conductivity (score: 1)
Author: "Augie \"Gus\" Hansen" <augie.hansen@comcast.net>
Date: Tue, 24 Mar 2020 10:37:16 -0600
"It's like wiggling the tail of a cat. It makes a sound at the other end. Only there's no cat." Does anyone have that quote? The wireless telegraph is not difficult to understand. The ordinary telegr
/archives//html/Topband/2020-03/msg00322.html (9,018 bytes)

25. Re: Topband: Ground Conductivity (score: 1)
Author: Michael Tope <W4EF@dellroy.com>
Date: Tue, 24 Mar 2020 19:46:31 -0700
Dan, Reading that QRZ.com thread you linked to and reflecting on K4SAV's measurements and how much they appeared to vary over a fairly short period of time, got me wondering about what could be respo
/archives//html/Topband/2020-03/msg00323.html (10,320 bytes)

26. Re: Topband: Ground Conductivity (score: 1)
Author: K4SAV <RadioXX@charter.net>
Date: Wed, 25 Mar 2020 09:19:45 -0500
W4EF said: Reading that QRZ.com thread you linked to and reflecting on K4SAV's measurements and how much they appeared to vary over a fairly short period of time, got me wondering about what could be
/archives//html/Topband/2020-03/msg00325.html (12,750 bytes)

27. Re: Topband: Ground Conductivity (score: 1)
Author: Grant Saviers <grants2@pacbell.net>
Date: Wed, 25 Mar 2020 09:17:05 -0700
"If NEC2 is wrong, so is NEC4." - I don't think so since a different ground modeling approach is available in NEC4.2. Running EZNEC Pro4 antennas both in 2 and 4.2 sometimes shows significant differe
/archives//html/Topband/2020-03/msg00326.html (13,939 bytes)

28. Re: Topband: Ground Conductivity (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Wed, 25 Mar 2020 10:57:08 -0700
Hi Grant, The references to "common point resistance" implies a multi-tower array, commonly used on the AM band to protect distant stations from interference on the same or adjacent frequencies. This
/archives//html/Topband/2020-03/msg00327.html (10,295 bytes)

29. Re: Topband: Ground Conductivity (score: 1)
Author: K4SAV <RadioXX@charter.net>
Date: Wed, 25 Mar 2020 13:49:03 -0500
KZ1W said: "If NEC2 is wrong, so is NEC4." - I don't think so since a different ground modeling approach is available in NEC4.2. Running EZNEC Pro4 antennas both in 2 and 4.2 sometimes shows signific
/archives//html/Topband/2020-03/msg00328.html (15,011 bytes)

30. Re: Topband: Ground Conductivity (score: 1)
Author: Guy Olinger K2AV <k2av.guy@gmail.com>
Date: Wed, 25 Mar 2020 15:07:12 -0400
Rudy is not the only one taking measurements. I've been doing EZNEC since 1996 (v2) and NEC4/EZNEC Pro since 2002. The latter cost me well over a thousand bucks, but has been well worth it in the lon
/archives//html/Topband/2020-03/msg00329.html (19,596 bytes)

31. Re: Topband: Ground Conductivity (score: 1)
Author: "Augie \"Gus\" Hansen" <augie.hansen@comcast.net>
Date: Wed, 25 Mar 2020 13:17:52 -0600
On 3/25/2020 11:57 AM, Jim Brown wrote: ... I don't know if it's still required today, but when I worked in broadcasting, each station using a directional antenna was required to make periodic field
/archives//html/Topband/2020-03/msg00330.html (9,572 bytes)

32. Re: Topband: Ground Conductivity (score: 1)
Author: "Ham Hicks" <ham306@bellsouth.net>
Date: Wed, 25 Mar 2020 16:36:48 -0400
I think it's about time for this discussion about ground conductivity to come to a stop. Its approaching the number of "expert " opinions about C-19 avoidance. Ham KB4BR KZ1W said: "If NEC2 is wrong,
/archives//html/Topband/2020-03/msg00332.html (15,825 bytes)

33. Re: Topband: Ground Conductivity (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Wed, 25 Mar 2020 16:20:53 -0500
Ham, I, for one, was thoroughly enjoying this discussion I just learned some valuable information concerning one particular limitation of even the most advanced modeling software. You may not know th
/archives//html/Topband/2020-03/msg00333.html (9,267 bytes)

34. Re: Topband: Ground Conductivity (score: 1)
Author: <dj7ww@t-online.de>
Date: Wed, 25 Mar 2020 22:36:32 +0100
I think there will be much more not discussed yet concerning ground conductivity. What do you have to offer? Peter, DJ7WW I think it's about time for this discussion about ground conductivity to come
/archives//html/Topband/2020-03/msg00334.html (16,224 bytes)

35. Re: Topband: Ground Conductivity (score: 1)
Author: Rob Atkinson <ranchorobbo@gmail.com>
Date: Thu, 26 Mar 2020 06:25:41 -0500
It is indeed true that variations in liquid soil moisture will dramatically affect ground system performance and base fed vertical impedance when an on, or below grade ground system is used. Frozen g
/archives//html/Topband/2020-03/msg00342.html (8,274 bytes)

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