Belden 549945 010, Composite CCTV Cable 1pair 18 AWG 1RG 59 U Coax Black

Belden 549945 010 is a composite PTZ (CCTV + Power/Audio) Siamese cable that combines 1-RG59 20 AWG solid bare copper coax with an 1-18 AWG stranded bare copper pair to run video and power/audio together. It features foam polyethylene (gas injected) insulation on the coax, polypropylene insulation on the pair, and a bare copper braid shield with 90% coverage. The black PVC jacket is rated CMG for indoor use and supported aerial runs. Electrical performance includes 75 Ohm characteristic impedance, UL Voltage Rating: 300 V RMS (UL Type CMG), and published attenuation values from 1 MHz to 1000 MHz.

Key Features

• Composite PTZ (CCTV + Power/Audio) Siamese construction for running video and power/audio together in one cable.
• Coax section: 1-RG59 20 AWG solid bare copper with foam polyethylene insulation and a bare copper braid shield (90% coverage).
• Power/audio section: 1-18 AWG stranded bare copper pair with polypropylene insulation (color code: Black & Red).
• Black PVC jacket rated CMG for indoor (not riser or plenum) and indoor, aerial - Black only, when supported by messenger wire.

Technical Specs

Construction & Materials

RG type	59
Coax conductor	1, 20 AWG, Solid, 0.032 in, BC - Bare Copper
Pair1 conductor	18 AWG, 7x26, 0.047 in, BC - Bare Copper
Coax insulation	PE - Polyethylene (Foam), 0.145 in (3.68 mm), color code: Natural
Pair1 insulation	PP - Polypropylene, 0.059 in (1.5 mm), color code: Black & Red
Insulation notes	Gas Injected
Coax inner shield	Braid, Bare Copper (BC), 90% coverage
Outer jacket material	PVC - Polyvinyl Chloride
Jacket color	Black

Physical Specs

Nom. diameter	0.232 x 0.450 in
Bulk cable weight	54 lbs/1000ft (80 kg/km)

Performance & Electrical Characteristics

Nom. characteristic impedance	75 Ohm
Nom. capacitance (Cond-to-Shield)	16.3 pF/ft (53.5 pF/m)
Nom. velocity of prop.	83%
Nom. conductor DCR	10.0 Ohm/1000ft (32.8 Ohm/km)
Nom. outer shield DCR	3.5 Ohm/1000ft (11 Ohm/km)
Nom. conductor DCR (Pair1)	6.5 Ohm/1000ft (21 Ohm/km)
UL Voltage Rating	300 V RMS (UL Type CMG)
Attenuation @ 1 MHz	0.3 dB/100ft
Attenuation @ 5 MHz	0.65 dB/100ft
Attenuation @ 10 MHz	0.9 dB/100ft
Attenuation @ 50 MHz	1.9 dB/100ft
Attenuation @ 100 MHz	2.6 dB/100ft
Attenuation @ 200 MHz	3.6 dB/100ft
Attenuation @ 400 MHz	5 dB/100ft
Attenuation @ 700 MHz	7 dB/100ft
Attenuation @ 900 MHz	8 dB/100ft
Attenuation @ 1000 MHz	8.5 dB/100ft

Environmental & Mechanical Ratings

UL temperature	75°C
Operating temperature	-30°C To +75°C
Installation temperature	0°C To +75°C
Stationary min. bend radius	2.5 in (64 mm)
Max. pull tension	102 lbs (46.3 kg)

Compliance & Certifications

Flammability / reaction to fire	UL 1581 VERTICAL FLAME TEST
CPR compliance	CPR Euroclass: Eca
NEC / UL compliance	Article 800, CMG
CEC / C(UL) compliance	CMG
European directive compliance	EU CE Mark, EU Directive 2015/863/EU (RoHS 2 amendment), EU Directive 2011/65/EU (RoHS 2), EU Directive 2012/19/EU (WEEE)
UK regulation compliance	UKCA Mark
APAC compliance	China RoHS II (GB/T 26572-2011)
Plenum number	649948

Applications

• Use in surveillance installations where video and power/audio are run together to a camera location.
• Choose for CCTV camera wiring when a single composite cable helps simplify routing.
• Support PTZ (Pan-Tilt-Zoom) camera setups requiring combined coax video and a paired conductor run.

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