Product Hierarchy
Product Hierarchy

1855A - Serial Digital Coax, Sub-miniature, #23 Solid BC, Foil + 95% TC braid, CMR

1855A-Serial Digital Coax, Sub-miniature

Low Loss Serial Digital Coax, Riser-CMR, Sub-Miniature 23 AWG solid bare copper conductor, foam HDPE core, Duofoil, +95% tinned copper braid, PVC jacket

Product Overview

Environmental Space: Indoor - Riser
Suitable Applications: SMPTE 2081-1 6 Gb/s UHDTV, SMPTE 424M 3 Gb/s HD-SDI 1080P

Physical Characteristics (Overall)

AWGStrandingMaterialNominal DiameterNo. of Coax
23SolidBC - Bare Copper0.023 in1
Conductor Count: 1
AWG Size: 23
MaterialNominal Diameter
Gas-injected FHDPE - Foam High Density Polyethylene0.102 in
Outer Shield Material
TypeLayerMaterialMaterial Trade NameCoverage [%]
Tape1Aluminum Foil-Polyester Tape-Aluminum FoilDuofoil®100 %
Braid2TC - Tinned Copper95 %
Outer Jacket Material
MaterialNominal Diameter
PVC - Polyvinyl Chloride0.159 in

Electrical Characteristics

Conductor DCR
Nominal Conductor DCR
20.1 Ohm/1000ft
Nom. Capacitance Conductor to Shield
16.3 pF/ft
Nominal Inductance
0.107 µH/ft
Nominal Characteristic Impedance
75 Ohm
Return Loss (RL)
Frequency [MHz]Minimum Return (RL)
5 MHz - 1600 MHz23 dB
1600 MHz - 4500 MHz21 dB
4500 MHz - 6000 MHz15 dB
High Frequency (Nominal/Typical)
Frequency [MHz]Nom. Insertion Loss
1 MHz0.39 dB/100ft
3.58 MHz0.78 dB/100ft
5 MHz0.92 dB/100ft
6 MHz1.00 dB/100ft
7 MHz1.08 dB/100ft
10 MHz1.2 dB/100ft
12 MHz1.3 dB/100ft
25 MHz1.8 dB/100ft
67.5 MHz2.83 dB/100ft
71.5 MHz2.93 dB/100ft
88.5 MHz3.22 dB/100ft
100 MHz3.39 dB/100ft
135 MHz3.84 dB/100ft
143 MHz4.00 dB/100ft
180 MHz4.41 dB/100ft
270 MHz5.44 dB/100ft
360 MHz6.34 dB/100ft
540 MHz7.85 dB/100ft
720 MHz9.15 dB/100ft
750 MHz9.31 dB/100ft
1000 MHz10.89 dB/100ft
1500 MHz13.38 dB/100ft
2000 MHz15.64 dB/100ft
2250 MHz16.68 dB/100ft
3000 MHz19.65 dB/100ft
4500 MHz24.35 dB/100ft
6000 MHz28.97 dB/100ft
Nominal DelayNominal Velocity of Propagation (VP) [%]
1.22 ns/ft82 %
UL Voltage Rating
300V RMS
Electrical Characteristics Notes: TDR Impedance: 75 +/- 1.5 Ohms
Other Electrical Characteristic 2: Return Loss: Fixed bridge and termination

Temperature Range

UL Temp Rating: 75°C
Operating Temp Range: -30°C To +75°C

Mechanical Characteristics

UV Resistance: Yes
Bulk Cable Weight: 17 lbs/1000ft
Max Recommended Pulling Tension: 40 lbs
Min Bend Radius/Minor Axis: 1.6 in


NEC/(UL) Specification: CMR
CEC/C(UL) Specification: CMG
CPR Euroclass: Eca
RG Type: Mini RG-59/U Type

Applicable Environmental and Other Programs

EU Directive 2000/53/EC (ELV): Yes
EU Directive 2003/96/EC (BFR): Yes
EU Directive 2011/65/EU (ROHS II): Yes
EU Directive 2012/19/EU (WEEE): Yes
EU Directive Compliance: EU Directive 2003/11/EC (BFR)
EU CE Mark: Yes
EU RoHS Compliance Date (yyyy-mm-dd): 2004-01-01
CA Prop 65 (CJ for Wire & Cable): Yes
MII Order #39 (China RoHS): Yes


Suitability - Aerial: Yes - Black only, when supported by messenger wire
Suitability - Burial: No
Suitability - Hazardous Locations: No
Suitability - Indoor: Yes
Suitability - Outdoor: Yes - Black only

Flammability, LS0H, Toxicity Testing

UL Flammability: UL1666 Vertical Shaft
CSA Flammability: FT4

Part Number

Plenum (Y/N): No
Plenum Number: 1855P
Suggested Connectors: BNC - Kings 2065-11-9
Related Parts: 1855ABHD3
Item #ColorFootnote
1855A 0101000BLACKC
1855A 010500BLACK
1855A 010N1000BLACK
1855A 010N1000BLACK
1855A 0061000BLUE, LIGHTC
1855A 006N1000BLUE, LIGHT
1855A 006N1000BLUE, LIGHT
1855A 0011000BROWNC
1855A 001N1000BROWN
1855A 001N1000BROWN
1855A 0081000GRAYC
1855A 008N1000GRAY
1855A 008N1000GRAY
1855A N3U1000GREEN, MILC
1855A N3UN1000GREEN, MIL
1855A N3UN1000GREEN, MIL
1855A 0031000ORANGEC
1855A 003N1000ORANGE
1855A 003N1000ORANGE
1855A 0021000REDC
1855A 002N1000RED
1855A 002N1000RED
1855A 0071000VIOLETC
1855A 007N1000VIOLET
1855A 007N1000VIOLET
1855A 0091000WHITEC
1855A 009N1000WHITE
1855A 009N1000WHITE
1855A 0041000YELLOWC
1855A 004N1000YELLOW
1855A 004N1000YELLOW
Footnote: C - CRATE REEL PUT-UP.

Product Notes

Notes: Print legend includes sequential footage marks.
Date: 2004-01-01
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