For systems under 90 meters 295 feet from headend
communication closet to communication closet,
provide RG-11 coaxial trunk cable. For systems
exceeding 90 meters 295 feet from headend equipment
to communication closet or from communication closet
to communication closet, consideration should be
given to utilizing 625 series cable to reduce system
losses. Edit paragraphs for type of cable required
in job. Delete paragraphs for trunk and feeder
cable for single family housing units and for small
systems where only drop cables are used.
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Cabling shall be UL listed for the application and shall comply with NFPA 70.
Provide a labeling system for cabling as required by UL 969. Cabling
manufactured more than 12 months prior to date of installation shall not be
used.
2.3.2.1
Trunk Cable
UL 1666.
Provide trunk cable with an NFPA 70 rating of CATVR.
a.
(1)
#14 AWG copper-clad steel center conductor.
(2) Gas injected foam polyethylene dielectric with nominal 7.11 mm
0.28 inches outer diameter.
(3) Bonded foil inner-shield and 60 percent aluminum braid or
quad shield.
(4)
(5)
82 to 85 percent nominal velocity of propagation.
(6)
Black PVC jacket
(7)
MHz
DB/100 m
MHz
DB/100 m
5
1.25
600
10.43
55
3.15
750
11.97
300
7.38
1000
14.27
350
7.94
450
9.02
500
9.51
MHz
DB/100 ft
MHz
DB/100 ft
5
0.38
600
3.18
55
0.96
750
3.65
300
2.25
1000
4.35
SECTION 16783N
Page 12