Dan,
Here are the attenuation specifications for some common cables at 28 MHz:
Cable dB per 100 ft dB per 500 ft
LDF7-50A .12 .6
LDF5-50A .19 .95
3/4" CATV .26 1.3
LDF4-50A .35 1.75
9913 .64 3.2
LMR-400 .65 3.3
RG-213 1.0 5.0
Based on the above, I'd recommend 3/4" CATV cable Andrew LDF5-50A, or LDF4-50A.
3/4" CATV cable is excellent low loss cable for a modest (often no) cost.
73!
Frank
W3LPL
---- Original message ----
>Date: Mon, 7 Aug 2006 16:41:31 -0500
>From: "Keith Dutson" <kdutson@sbcglobal.net>
>Subject: [TowerTalk] Coax Run To Tower
>To: "TowerTalk" <towertalk@contesting.com>
>
>I have to make a rather long run from the shack to tower, about 500 feet.
>This tower will have 2 el 80 + 8/8/8 stack 10 + log periodic covering 30-10.
>What kind of coax would you run assuming only one line is needed, switched
>between the three arrays?
>
>73, Keith NM5G
>
>_______________________________________________
>
>
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk@contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|