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#21
August 29th 10, 10:45 PM
posted to rec.radio.amateur.antenna
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Whip antennas with coils
On 8/28/2010 7:23 PM, Art Unwin wrote:
... Art Having locked myself away for months, wife will claim years, and searching for the "best" shortened stealth antenna(s), I have been forced to employ coils. In any loaded antenna (hide the JD!) the coil is best at the bottom with a .62 L/D ratio. I currently use DLM's from Robert Vincents' patent, it allows me to break the laws ... others research and mileage may vary. The loading coil adds +J to compensate the -J from a short antenna ... however, old hams taught me that the coil adds electrical degrees, God bless them ... Regards, JS |
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