[TowerTalk] RG-11 Source?
Jim Lux
jimlux at earthlink.net
Wed Feb 9 12:53:55 EST 2005
At 09:14 AM 2/9/2005, Les Kalmus wrote:
>Tower Talkians,
>
>Anyone have a good source for quality RG-11?
>
>I need to install a moderately long run for cable tv.
Out of curiosity, why RG-11 (which is solid dielectric and 1/2" in
diameter) as opposed to, say, one of the new low-loss foam dielectric RG-6
types (which are smaller and lighther weight?
I'd think you'll pay more for the RG-11 (unless it's some manky old
surplus), just from the increased mass.
There are "11 type" coaxes with foam dielectric, of course. Just paging
through the Belden catalog...
Belden 1523A is a 0.4 inch 75 ohm coax. 2.15 dB/100ft at 300
MHz. Compare to a "6 type" foamed dielectric which is around 3.4 dB/100ft
at 300 MHz
For comparison, Belden 8261 is an RG-11/U type with solid PE dielectric is
about 2dB/100ft at 200 MHz and 4.2 dB/100ft at 400 MHz. The foam stuff
runs around 2.5 dB/100ft at 400 MHz.
Jim, W6RMK
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