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Old November 18th 09, 03:31 AM posted to rec.radio.amateur.antenna,alt.internet.wireless
Tony Hwang Tony Hwang is offline
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First recorded activity by RadioBanter: Nov 2006
Posts: 13
Default Matching on the MFJ-1800

amdx wrote:
Hi All,
My original thread seems to have died, still wondering how the folded loop
is matched to 50 ohms. (probably isn't? cheap, but works?)
I've added a dimensional drawing and some more pics.
If more info is needed let me know.


Here is a drawing and some more pics.
http://i395.photobucket.com/albums/p...intFileJPG.jpg
http://i395.photobucket.com/albums/p...connection.jpg
http://i395.photobucket.com/albums/p...MFJRuledDE.jpg
http://i395.photobucket.com/albums/p...Jruledcoax.jpg
Hope I covered everything,
Mike


Hi,
I used to measure impedance of antenna feed point with home made noise
bridge. I know there is a 300 Ohm to 75 Ohm trnasformer balun.