Barrow Mods
Barrow Mods 12G 4K SDI BNC Cable 4855R RG59 50ft Yellow 2 in 1 accessory
A 12G-SDI BNC cable using Belden 4855R mini RG59 coax that carries 4K signals up to 150 feet and meets SMPTE 424M, ST 2081-1 and ST 2082-1 standards
- Supports 12G-SDI 4K signals up to 149 feet
- Meets SMPTE 424M, ST 2081-1 and ST 2082-1 standards
- Hand-assembled in the USA with Belden 4855R mini RG59 cable
- BNC connectors crimped by qualified technicians for reliable 75-ohm impedance
- Lifetime connector replacement warranty included
12G-SDI 4K Video Cable for Professional Links
This 50-foot BNC-to-BNC cable uses Belden 4855R mini RG59 construction to carry 12G-SDI signals at 4K resolution. It is built for broadcast engineers and AV installers who need a reliable link between switchers, cameras and recorders. The assembly is crimped by qualified technicians in the USA and carries a lifetime connector replacement warranty. It meets SMPTE 424M, ST 2081-1 and ST 2082-1 standards for professional video transport.
Sustained 12 GHz Transmission up to 149 Feet
The cable is tested for continuous 12G-SDI operation at distances up to 149 feet, with 6G-SDI reaching 215 feet and 3G-SDI extending to 310 feet. Return loss is guaranteed at -15 dB from 4.5 to 12 GHz across the full length, ensuring stable performance during long sessions. Precision 75-ohm impedance is maintained throughout the run to minimise signal degradation under constant load.
Verify BNC Connectors and 12G-SDI Device Support
Confirm that both source and destination equipment feature standard BNC ports rated for 12G-SDI bandwidth. The 50-foot length suits typical studio or stage runs, but check the total path against the 149-foot 12G limit if extensions are added. Ensure the mini RG59 diameter fits your cable management and conduit plans before ordering.
Highlights
- Supports 12G-SDI 4K signals up to 149 feet
- Meets SMPTE 424M, ST 2081-1 and ST 2082-1 standards
- Hand-assembled in the USA with Belden 4855R mini RG59 cable
- BNC connectors crimped by qualified technicians for reliable 75-ohm impedance
- Lifetime connector replacement warranty included
Specifications
No published specifications for this item yet.
Questions about this item
Does the 50 ft 4855R RG59 cable run warm or draw noticeable power during continuous 12G-SDI use?
No, the cable is a passive 75-ohm coaxial link with no active electronics, so it generates no heat and consumes no power at any length.
What connectors must my switcher or camera already provide for this BNC-to-BNC cable to plug in directly?
Each end terminates in a standard 12G-SDI BNC connector, so both devices need a matching 75-ohm BNC jack.
Will the 50 ft length still meet SMPTE 424M and ST 2082-1 return-loss limits when I patch it into an older 3G-SDI router?
Yes, the 4855R mini RG59 is specified to -15 dB return loss from 4.5 to 12 GHz, covering 3G, 6G and 12G rates at this distance.
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