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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+Measurement\s+of\s+antenna\s+current\s*$/: 10 ]

Total 10 documents matching your query.

1. Re: LF: Measurement of antenna current (score: 1)
Author: "Andrew Talbot" <>
Date: Sun, 13 May 2001 15:34:26 +0100
You've made me think about it a lot more now. The AC/DC resistance argument is certainly valid. It does indeed mean that any capacitive field will be captured with less loss than letting it end up in
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00192.html (10,242 bytes)

2. Re: LF: Measurement of antenna current (score: 1)
Author: "Dick Rollema" <>
Date: Sun, 13 May 2001 13:35:08 +0200
To All from PA0SE Andy, G4JNT, wrote as a comment on GW4ALG's experiment using aluminum kitchen foil as a grouind screen under his loading coil: Aluminium kitchen foil is much thinner than the skin d
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00194.html (9,989 bytes)

3. Re: LF: Measurement of antenna current (score: 1)
Author: "Steve Rawlings" <>
Date: Sat, 12 May 2001 22:09:33 +0100
Aluminium kitchen foil is much thinner than the skin depth at these frequencies, so you are getting nowhere near the full screening effect. Many thanks for another clear description of what's actual
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00201.html (9,939 bytes)

4. Re: LF: Measurement of antenna current (score: 1)
Author: "Andrew Talbot" <>
Date: Sat, 12 May 2001 20:53:45 +0100
Steve and group Aluminium kitchen foil is much thinner than the skin depth at these frequencies, so you are getting nowhere near the full screening effect. Skin depth is given by 503.SQRT(Rho / Freq)
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00203.html (10,532 bytes)

5. Re: LF: Measurement of antenna current (score: 1)
Author: "Steve Rawlings" <>
Date: Sat, 12 May 2001 16:39:30 +0100
Hi All, Well, it's been drier in Chepstow this week, and we're having a gloriously sunny day today. So I've been doing some more antenna current measurements this afternoon. (If you're getting bored
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00204.html (11,714 bytes)

6. Re: LF: Measurement of antenna current (score: 1)
Author: "Dave Sergeant" <>
Date: Tue, 8 May 2001 08:27:15 +0100
From Dave G3YMC There has been discussion on the difference in current below and above a vertical antenna's loading coil. I was not going to get involved in this discussion, but when I see some of th
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00249.html (11,818 bytes)

7. Re: LF: Measurement of antenna current (score: 1)
Author: "Steve Rawlings" <>
Date: Mon, 07 May 2001 22:47:47 +0100
John KD4IDY wrote: I don't recall whether you ever mentioned what the length is of your coil. Is it an appreciable fraction of the overall antenna height? Hi John. The length of the loading coil is 8
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00251.html (10,707 bytes)

8. Re: LF: Measurement of antenna current (score: 1)
Author:
Date: Mon, 7 May 2001 15:26:16 EDT
Steve, I don't recall whether you ever mentioned what the length is of your coil. Is it an appreciable fraction of the overall antenna height? Also, I seem to recollect that some of the discussion in
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00252.html (9,272 bytes)

9. Re: LF: Measurement of antenna current (score: 1)
Author: "Steve Rawlings" <>
Date: Mon, 07 May 2001 17:52:19 +0100
Hi All, Many thanks for the advice regarding my 'missing' milliamps, both direct and via the Reflector. Naturally, after getting so many good ideas, I had no choice but to take advantage of the good
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00253.html (14,093 bytes)

10. LF: Measurement of antenna current (score: 1)
Author: "Steve Rawlings" <>
Date: Sun, 06 May 2001 22:02:56 +0100
Hi All, Today, I made some more antenna current measurements on my 12 m vertical (and my shiny new loading coil), using a thermocouple meter. At resonance, the current into the base of the loading co
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00259.html (9,948 bytes)


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