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

Total 10 documents matching your query.

1. Re: LF: LF/VLF (score: 1)
Author: "mal hamilton" <>
Date: Fri, 11 Jun 2010 17:01:42 +0100
Warren I have not found that to be the case at this qth. Loops are not affected by trees because there is nothing being radiated to be affected whereas the big signals from verticals are affected to
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00007.html (11,970 bytes)

2. RE: LF: LF/VLF (score: 1)
Author: Laurence KL7UK <>
Date: Fri, 11 Jun 2010 06:21:44 -0800
Mal - are you saying small lambda loops are ineffective for dx working at LF, say 137Khz? (where within practical verticals give poorer performance in wooded areas....or arent feasible). Past results
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00031.html (10,823 bytes)

3. Re: LF: LF/VLF (score: 1)
Author: Warren Ziegler <>
Date: Fri, 11 Jun 2010 10:31:01 -0400
Mal, On 137kHz loops here produce 1W ERP for each 400 Watts of transmitter output. I recall someone posting here from the U.K. that his vertical on 137 produced 700 mW ERP with 650 Watts transmitter
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00057.html (12,477 bytes)

4. LF: LF/VLF (score: 1)
Author: "mal hamilton" <>
Date: Fri, 11 Jun 2010 14:39:17 +0100
All Forget about loops, ground rod induction etc if you want to radiate a dx signal.The average person could shout and be heard further. A mechanical alert/fire siren can be heard several miles away
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00096.html (9,471 bytes)

5. RE: LF: LF/VLF (score: 1)
Author: Roger Brown <>
Date: Fri, 11 Jun 2010 12:07:23 -0800
What kind of input power to the loop and vertical? Roger KL7Q I did testing several years ago with a 200' TX loop and a 45' vertical with a 72' flattop. The band was 1750 meters. The loop and the ver
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00132.html (11,931 bytes)

6. RE: LF: LF/VLF (score: 1)
Author: Roger Brown <>
Date: Sat, 12 Jun 2010 10:39:05 -0800
Thanks Mike, I noticed after I sent my question that you were referring to Part 5 - Sorry for asking a stupid question. However, on another subject, do you feel the advantage to using a transmitting
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00574.html (10,985 bytes)

7. Re: LF: LF/VLF (score: 1)
Author: <>
Date: Fri, 11 Jun 2010 09:45:06 -0700
Loops are not affected by trees because there is nothing being radiated to be affected .... ...better tell that to the loopers working across the Atlantic...what a goofy statement WEB - "The VE7SL Ra
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00597.html (10,088 bytes)

8. Re: LF: LF/VLF (score: 1)
Author: Mike-WE0H <>
Date: Sat, 12 Jun 2010 22:47:02 -0500
Hi Roger, On 600m, I would not worry about using a vertical hanging in trees. On 1750m and 2200m, the vertical's signal will get eaten up by those trees. I am using a 70' inverted L vertical on 600m
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00659.html (11,881 bytes)

9. Re: LF: LF/VLF (score: 1)
Author: Mike-WE0H <>
Date: Fri, 11 Jun 2010 13:59:22 -0500
I did testing several years ago with a 200' TX loop and a 45' vertical with a 72' flattop. The band was 1750 meters. The loop and the vertical were mounted in the woods with 70' plus oak trees. What
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00676.html (11,551 bytes)

10. Re: LF: LF/VLF (score: 1)
Author: Mike-WE0H <>
Date: Fri, 11 Jun 2010 15:27:43 -0500
3 watts into the feedline. Part 5 licensed WD2XGI. Mike WE0H Roger KL7Q
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00770.html (10,345 bytes)


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