Product Description
Professional 12G-SDI HD-BNC to HD-BNC Cable
The AV-Cables 12G UHD-SDI HD-BNC to HD-BNC Cable provides professional broadcast-video performance in a lightweight, flexible Mini RG59 construction. It is designed for compatible high-density video equipment using 75-ohm HD-BNC connections.
Each assembly uses genuine Belden 4855R 12 GHz, 75-ohm Mini RG59 coaxial cable and precision 12G-rated HD-BNC male connectors. Every completed cable is hand assembled and individually tested in the USA before shipment.
Professional high-density 12G-SDI connection: HD-BNC provides professional 75-ohm performance in a smaller connector footprint than standard BNC. Combined with compact Belden 4855R Mini RG59, this cable is ideal for densely populated routers, patch panels, monitors, converters and production equipment.
12G HD-BNC Cable Key Features
- Genuine Belden 4855R 12 GHz broadcast coaxial cable
- Precision 12G-rated 75-ohm HD-BNC male connectors
- HD-BNC male-to-HD-BNC male configuration
- True 75-ohm cable and connector signal path
- Supports SD-SDI through 12G-SDI video formats
- Designed for uncompressed 4K UHD video transmission
- Compact 4.5 mm Mini RG59 construction
- 23 AWG solid silver-plated copper center conductor
- Foil shield with 95% tinned-copper braid coverage
- Lightweight and flexible for high-density installations
- Secure bayonet-style HD-BNC connections
- Standard and custom lengths available
- Multiple jacket colors available
- Hand assembled and individually tested in the USA
- Lifetime Connector Replacement Warranty
Designed for High-Density Broadcast Video Equipment
HD-BNC is a compact professional 75-ohm connector designed for broadcast equipment that requires more video connections in a limited amount of panel space. It provides a familiar bayonet-style locking connection while using a substantially smaller footprint than standard BNC.
This HD-BNC-to-HD-BNC cable provides a direct connection between compatible high-density SDI devices without requiring separate adapters. The complete assembly is designed to maintain a professional 75-ohm signal path.
Belden 4855R has an outside diameter of approximately 4.5 mm, making it substantially smaller and lighter than full-size RG59 or RG6. Its compact construction simplifies routing through crowded equipment racks, mobile production trucks and fly packs.
Recommended Applications
- Broadcast television studios and control rooms
- High-density video routers
- Professional patch panels
- 4K UHD production switchers
- Broadcast monitors and multiviewers
- Video converters and signal processors
- Mobile production trucks
- Fly packs and portable production systems
- Professional camera systems
- Post-production and editing systems
- Live production and sports broadcasting
- Corporate AV installations
- Government and OEM systems
- Professional rack-to-rack video connections
Confirm the connector type before ordering: HD-BNC is smaller than a standard BNC connector. A standard BNC connector will not connect directly to an HD-BNC port. Confirm that both devices use HD-BNC connections.
Supported SDI Formats and SMPTE Standards
This professional 75-ohm HD-BNC cable supports compatible SD-SDI, HD-SDI, 3G-SDI, 6G-SDI and 12G-SDI equipment.
| SDI Format | Typical Video Application | Applicable Standard |
|---|---|---|
| 12G-SDI | Single-link 4K UHD video | SMPTE ST 2082-1 |
| 6G-SDI | 4K UHD video | SMPTE ST 2081-1 |
| 3G-SDI | 1080p HD video | SMPTE 424M |
| HD-SDI | Professional HD video | SMPTE 292M |
| SD-SDI | Standard-definition serial digital video | SMPTE 259M |
Approximate SDI Transmission Distances
Belden 4855R provides strong performance for a miniature coaxial cable. Lower-data-rate SDI formats generally support longer cable runs than 12G-SDI.
| SDI Format | Typical Application | Approximate Maximum Distance |
|---|---|---|
| 12G-SDI | 4K UHD video | Up to approximately 150 feet |
| 6G-SDI | 4K UHD video | Up to approximately 215 feet |
| 3G-SDI | 1080p HD video | Up to approximately 300 feet |
Transmission distances are approximate. Actual performance depends on the connected equipment, video format, connectors, patch points, installation conditions and total signal path. Contact AV-Cables before ordering for a critical or unusually long cable run.
HD-BNC vs. Standard BNC
HD-BNC and standard BNC connectors can provide professional 75-ohm SDI performance, but they use different connector sizes and are not directly interchangeable.
| Feature | HD-BNC | Standard BNC |
|---|---|---|
| Nominal impedance | 75 ohms | 75 ohms when using professional video connectors |
| Connector size | Compact high-density design | Traditional full-size design |
| Connection style | Bayonet-style locking connection | Bayonet-style locking connection |
| Primary advantage | More connections in limited panel space | Widely used traditional broadcast interface |
| Directly interchangeable? | No—requires a matching HD-BNC port | No—requires a matching standard BNC port |
Belden 4855R HD-BNC Cable Specifications
| Cable manufacturer | Belden |
| Cable model | 4855R |
| Cable construction | Mini RG59 precision broadcast coax |
| Rated bandwidth | 12 GHz |
| Nominal impedance | 75 ohms |
| Center conductor | 23 AWG solid silver-plated copper |
| Shielding | Foil shield with 95% tinned-copper braid |
| Outside diameter | Approximately 4.5 mm / 0.177 inches |
| Jacket | PVC, CMR rated |
| Connector configuration | Precision 75-ohm HD-BNC male to HD-BNC male |
| Signal compatibility | SD, HD, 3G, 6G and 12G-SDI |
| Maximum video format | Up to 4K UHD |
| SMPTE standards | SMPTE 259M, 292M, 424M, ST 2081-1 and ST 2082-1 |
| Assembly | Hand assembled in the USA |
| Testing | Every completed cable is individually tested |
| Warranty | Lifetime Connector Replacement Warranty |
Available Lengths and Jacket Colors
Choose from standard lengths ranging from short rack and patch-panel connections through longer studio and production runs. Custom lengths are available when a standard option does not fit your installation.
Multiple jacket colors are available for cable identification, signal-path organization and equipment grouping. Color availability may vary by selected length and current material inventory.
Compatible Professional Video Equipment
These 75-ohm HD-BNC cable assemblies can be used with compatible professional equipment from manufacturers such as Blackmagic Design, Sony, Ross Video, Grass Valley, Panasonic, Canon, AJA Video Systems, FOR-A, Evertz, Imagine Communications, TVLogic, Marshall Electronics, Leader, Tektronix and Decimator Design.
Confirm that both connected devices use HD-BNC ports and support the intended SDI format. Manufacturer names are used only to describe potential equipment compatibility.
Why Choose AV-Cables?
AV-Cables manufactures professional audio, video and broadcast cable assemblies using components from trusted professional brands. This cable combines genuine Belden 4855R Mini RG59 coax with precision 12G-rated HD-BNC connectors for dependable performance in professional HD and 4K UHD video systems.
- Genuine Belden 4855R 12 GHz broadcast cable
- Precision 12G-rated 75-ohm HD-BNC connectors
- Hand assembled in the USA
- Every completed cable is individually tested
- Standard and custom lengths available
- Multiple jacket colors available
- Custom labeling and matching cable sets available
- Volume production for broadcasters, integrators and OEM customers
- Lifetime Connector Replacement Warranty
Need a custom length, jacket color, labeling option or multiple matching cables? Contact AV-Cables for a custom quote.
View additional products in our HD-BNC Cable category.
12G HD-BNC to HD-BNC Cable FAQs
What connectors are installed on this cable?
This cable has a precision 75-ohm male HD-BNC connector on both ends.
Is HD-BNC the same as standard BNC?
No. HD-BNC is a smaller high-density connector. A standard BNC connector will not connect directly to an HD-BNC port.
Does this cable support 12G-SDI and 4K UHD?
Yes. This assembly uses genuine Belden 4855R 12 GHz coax and precision 12G-rated HD-BNC connectors for compatible 12G-SDI and 4K UHD equipment.
Can this cable carry 3G-SDI or 6G-SDI?
Yes. It is backward compatible with compatible SD-SDI, HD-SDI, 3G-SDI and 6G-SDI equipment using HD-BNC connections.
How far can Belden 4855R carry a 12G-SDI signal?
Belden 4855R can typically support 12G-SDI distances up to approximately 150 feet. Actual performance depends on the connected equipment, video format, connectors, patch points, installation conditions and total signal path.
Why should I choose Mini RG59?
Mini RG59 is a strong choice when flexibility, reduced cable weight and compact routing are important. Its smaller diameter is particularly useful in high-density racks, routers, patch panels, fly packs and mobile production systems.
Are multiple jacket colors available?
Yes. Multiple jacket colors are available for cable identification and signal-path organization. Availability may vary by selected length and current material inventory.
Are custom lengths available?
Yes. AV-Cables can manufacture custom lengths, matching cable sets and production quantities for studios, broadcast facilities, production companies, integrators, government installations and OEM projects.
