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Author Topic: doublet feeder Q  (Read 1573 times)
M0JHA
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Posts: 647




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« on: April 24, 2013, 06:29:53 AM »

i wanted to make a 50 foot doublet for 40/30 and 20 using the internal tuner on the KX1 . Can anyone suggest a length of feeder to keep matching needs to a minimum ( 300 ohm unslotted ribbon feeder) ?

I was going to make the Norcal doublet which is 22 foot per side and 28 foot feeder but it doesn't use 300 ohm feeder and i'm not sure if that would need an 4.1 tranny if used with the KX1 ..

any advice appreciated

billy, m0jha
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ZL3OF
Member

Posts: 20




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« Reply #1 on: May 21, 2013, 03:10:56 AM »

According to IMAXGRA2 increasing your dipole to 54 ft and using around 72 ft of 300 ohm ribbon (assuming vf of ribbon is .82) should do what you want.
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