Antenna 30M TwinFlex
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Simple 30M antenna for APRS.
Transcript of Antenna 30M TwinFlex
Twin Flex 30 Meter Antenna by ZS1JHG
Requirements :
Twin Flex outdoor UV type Black about 25MBalun 4:1 commercial or homebrewFerrite torriod about 30/35mm or AM radio rod antenna
Split flex at one end for 6.2M and tie a knot or clamp at centre point,balance of twin flexis your feedline.At the end of the twin flex feedline wind 8 turns onto ferrite torriod or rod, then connect toa 4:1 balun.Connect a length of coax to the balun and radio, as short as possible
Freq 10.150Mhz SWR 1:3 over band
6.2M 6.2M
Twin Flex feeder section
Ferrite torriod- 8 turns of feedline
Coax 50 ohm to radio
17/7/2008
Balun 4:1Balun 4:1