Return to KLUBNL.PL main page

Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Re\:\s+E\-Field\s+Probe\s+calibration\s+question\s*$/: 7 ]

Total 7 documents matching your query.

1. Re: LF: Re: E-Field Probe calibration question (score: 1)
Author: Andy Talbot <[email protected]>
Date: Thu, 1 Apr 2010 14:05:21 +0100
Hi Alan + All...   Actually its a bit more complicated on its own...   The physical length of the element is 0.75m, which is appreciably longer than the electrical effective length.   And I'm betting
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00037.html (13,910 bytes)

2. Re: LF: Re: E-Field Probe calibration question (score: 1)
Author: "Johan H. Bodin" <[email protected]>
Date: Thu, 01 Apr 2010 17:32:35 +0200
Oops.. I forgot H = E/Zspace = E/(120*Pi) (plane wave in the far field) where H is mag. field strength [A/m] E is elec. field strength [V/m] /Johan
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00102.html (11,118 bytes)

3. Re: LF: Re: E-Field Probe calibration question (score: 1)
Author: "Johan H. Bodin" <[email protected]>
Date: Thu, 01 Apr 2010 17:00:11 +0200
V = 2*Pi*f*N*A*u0*H = 2*Pi*f*N*A*B Where f [Hz] N [turns] A [m^2] H [A/m] B [Tesla] u0 = 4*Pi*10^-7 If not properly aligned with the field, multiply by cos(angle). http://vk1od.net/antenna/SmallUntun
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00203.html (10,727 bytes)

4. LF: Re: E-Field Probe calibration question (score: 1)
Author: "James Moritz" <[email protected]>
Date: Thu, 1 Apr 2010 16:48:19 +0100
Dear Andy, LF Group, I haven't done quantitative tests due to the difficulty of using such an antenna in the Brookmans Park RF environment, but in some quick checks I did, output from an active whip
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00239.html (13,535 bytes)

5. LF: Re: E-Field Probe calibration question (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 1 Apr 2010 12:44:15 +0100
Hi Andy maybe I dont read it right, but if that is an E-field probe it is not a "dipole" The input capacitance senses the voltage at two points on the wavefront. The ground plane is, I believe, irrel
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00376.html (12,518 bytes)

6. Re: LF: Re: E-Field Probe calibration question (score: 1)
Author: "Alan Melia" <[email protected]>
Date: Thu, 1 Apr 2010 15:12:05 +0100
You probably need input from Jim here......I will watch with interest. You will find the loop calculation in your Terman..............What no Terman!! call youself an injumier?? Alan by which do is c
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00469.html (13,913 bytes)

7. Re: LF: Re: E-Field Probe calibration question (score: 1)
Author: "Mike Underhill" <[email protected]>
Date: Thu, 1 Apr 2010 14:51:49 +0100
Andy If or when all else has failed why not try the (my?) "two identical antenna method"? Set up a pair of two identical short whips about 30 to 50m apart on reasonably uniform ground. they should be
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00519.html (15,048 bytes)


This search system is powered by Namazu