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Laird HDBNC4855-MM01 High Density HD-BNC Male to HD-BNC Male 12G HD-SDI Cable - 1 Foot
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The Laird HDBNC4855 Series of low profile coax HD-BNC to BNC male adapter cables are designed for transmitting high resolution uncompressed 12G-SDI / 4K UHD video signals. Ideal for high density jackfields, routers and signal distribution systems where RF performance is critical. The HD-BNC utilizes a bayonet style mating analogous to traditional BNCs for a reliable coupling.

These Laird cables are built with Belden low loss 4855R coax rated for 12G-SDI runs up to 150 feet. The cable's new braid design, silver-plated copper conductor, and a new polyethylene formula are all design features that contribute to significant RL improvement and an 8 dB improvement on cable attenuation compared to existing coaxes. Fully compatible with SMPTE ST-2082-1 and ST-2081-1 standards.


  • Designed for UHD and 4K Video Transport
  • 12 GHz, 4K UHD Precision 75-Ohm Video Cable
  • 12G SDI Optimized BNC Connectors
  • Optimized Transmission Distance for UHDTV
  • Transmits up to 149 ft/45m
  • Return Loss: Guarantees -15 dB RL from 4.5 to 12GHz
  • Meets SMPTE ST-2082-1 and ST-2081-1 Standards


  • Belden 12G SDI Coax Cable with PVC Jacket
  • Compatible with 12GSDI single link format devices
  • Nominal Impedance: 75& Omega;
  • Conductor: Silver Plated Copper
  • Insulation: Gas Injected Foam HDPE
  • Outer Shield: Duofoil bonded to the Core + Tinned Copper Braid Shield
  • Conductor DC Resistance: 19.700 [email protected]°C(Ohm/1000ft)
  • Outer Shield Resistance: 3.900 [email protected]°C(Ohm/1000ft)
  • Nominal Inductance: .107 ΜH/ft
  • Nominal Capacitance Conductor to Shield: 16.3 pF/ft
  • Transmission Distance: 12G signals up to 149 feet, 6G up to 215 feet, and 3G up to 310 feet
    Amphenol HD-BNC 75 Ohm Straight Crimp Connectors
  • Durability: 500 Cycles
  • Return Loss: ≥ 30 dB @ DC - 6 GHz ≥ /15 dB @ DC- 12 GHz
  • Voltage Rating: 1000VRMS
  • Insulation Resistance: > 10000 MΩ

1 Foot
Weight: 2.034 lbs.
3 Foot
Weight: 2.051 lbs.
6 Foot
Weight: 2.102 lbs.
10 Foot
Weight: 2.17 lbs.
25 Foot
Weight: 2.425 lbs.
50 Foot
Weight: 2.85 lbs.

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