Coaxial Rotator Loops
Rus Healy NJ2L
rhealy at arrl.org
Wed May 5 16:48:40 EDT 1993
Keith, WB9TIY, writes:
>While on the subject of flex cable, has anyone done investigations on the
>use of Andrew Corp "Super-Flex" heliax cables as rotor loops ?? I have a
>couple of nice 0.5" diameter Super-Flex jumpers that would be just the
>ticket IF they can handle the constant bending at typical Chicago temps
>('ya know - -40 to +120 F).
This cable is quite popular with the VHF/UHF/microwave crowd, as
you might imagine. At last year's Central States VHF Conference,
I recall overhearing a discussion among a few prominent VHF guys
in which they traded stories about how their half-inch Super-Flex
jumpers had eventually fatigued and cracked after being used as
rotator loops for several years. That was enough to deter me,
and the Newington climate isn't as cruel as it is in Chicago
(although it seems even worse some days :').
Your mileage may vary.
Rus Healy, NJ2L rhealy at arrl.org
Senior Assistant Technical Editor, QST Tel 203-666-1541
ARRL, 225 Main St, Newington CT 06111-1494 Fax 203-665-7531
1.8 through 3456 MHz -- and climbing!
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