[Towertalk] Newbie Question

Pete Smith n4zr@contesting.com
Thu, 18 Jul 2002 14:01:08 -0400

At 12:44 PM 7/18/02 -0500, Red wrote:
>Normally I'd agree that heliax is overkill on HF, but suggest you check 
>the attenuation of any coax, expecially on 10 and 15 meter.  Ordinary RG-8 
>loses about 1.2-1.3 dB per 100 feet at 30 MHz.  That amounts to 3 - 3.25 
>dB for 350 feet; half the power!

But 75-ohm 3/4" CATV hardline is just a hair lossier than 7/8" Heliax at 30 
MHz (.3-.35 dB/100 ft), can often be bought for free, and lends itself to 
inexpensive connector fabrication.

73, Pete N4ZR

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