
December 19th 07, 02:32 AM
posted to rec.radio.shortwave
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First recorded activity by RadioBanter: Jul 2006
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The Verdict {One Man's Opinion} : Magnetic Longwire Balun Is Too Expensive
In article ,
David wrote:
RHF wrote:
The Verdict {One Man's Opinion} : Magnetic Longwire Balun Is Too
Expensive
http://www.hard-core-dx.com/nordicdx.../magbalun.html
-by- Alan Johnson
-source- Hard-Cord-DX website : http://www.hard-core-dx.com/
The Most Common Antenna Type
Randon Wire Antenna Problems
Enter the Balun
The Magnetic Longwire Balun (MLB)
In the Laboratory
After Four Rainy WeekEnds
I also did A-B Comparisons
* The Results
The "Resistance" Curve for the MLB
The N8KDV Transformer
A-B Testing was very Revealing.
* Recommenation
How Essential is a Perfect Match?
Based on Price and Performance
The MLB Definitely Wins
Originally Published in the NASWA Journal - July 1992
-by- Alan Johnson [N4LUS]
Magnetic Longwire Balun (MLB)
http://www.universal-radio.com/catalog/sw_ant/1484.html
http://www.dolstra.nl/Z&L-amateur/AN...tems/MLB_1.JPG
http://www.remeeus.eu/english/hamradio/mlb.htm
http://ham.srsab.se/graphics/antennas/mlbII.jpg
-by- RF Systems - MSRP Price ~ $60
Alternative "MLB" - MLB-1 Magnetic Longwire Balun
http://www.palomar-engineers.com/MLB-1/mlb-1.html
-by- Palomar Engineers - MSRP Price ~ $50
NOTE - While the 'N8KDV Transformer' is presently Not Available.
WinRadio does offer the LWA-0130 Long Wire Antenna Adapter
http://www.grove-ent.com/WR0130.html
http://www.winradio.com/home/lwa.htm
http://www.winradio.com/home/ax05e.htm
-by- WiNRADiO - - MSRP Price ~ $40
READ - Good Deal on 9:1 Matching Transformer
http://groups.google.com/group/rec.r...e40978fdc32ac0
-by- William Fieldstone
More WinRadio LWA-0130 Long Wire Antenna Adapter Postings
http://groups.google.com/group/rec.r...7d380609eec592
http://groups.yahoo.com/group/Shortw...na/message/230
iane ~ RHF
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[D]iane,
The point is to keep the feedpoint Z below the transmission line Z.
What's the advantage of the feed-point Z being below the transmission
line Z?
--
Telamon
Ventura, California
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