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5/8 wave antenna kit

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KD2DXF

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Mar 8, 2010
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Utica, NY
I ordered a 5/8th wave over 5/8th wave antenna with the nmo ground plane kit. this will be used as a 10 watt base station antenna. I know how long the vertical antenna is supposed to be cut at, but what about the radials? ive seen a few photos which show really short radials.
Any advise is appreciated. this will be used for 469.550Mhz
 

mmckenna

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1/4 wave length is usually the minimum. At 469.550, you'd be looking at something a bit less than 6 inches.
 

lmrtek

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Feb 11, 2009
Messages
535
Radial length has no MAXIMUM length

Manufacturers just don't want to use more material than they HAVE to

They need to be at least 10% longer than 1\4 wavelength so in your case it would be 6.5 inches minimum length
 
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