Product Description
Professional 12G-SDI BNC to HD-BNC Cable
The AV-Cables 12G-SDI BNC to HD-BNC Cable provides a professional connection between video equipment using a traditional standard BNC port and equipment using a compact high-density HD-BNC port.
Each assembly is manufactured with genuine Belden 4505R 12 GHz, 75-ohm RG59 coaxial cable, one precision standard BNC male connector and one precision HD-BNC male connector. Every completed cable is hand assembled and individually tested in the USA before shipment.
12G BNC to HD-BNC Cable Key Features
- Genuine Belden 4505R 12 GHz broadcast coaxial cable
- Standard BNC male to HD-BNC male configuration
- Precision 12G-rated 75-ohm connectors
- Professional 75-ohm cable and connector signal path
- Supports SD-SDI through 12G-SDI video formats
- Designed for uncompressed 4K UHD video transmission
- Full-size RG59 construction
- Approximately 5.92 mm cable diameter
- 20 AWG solid silver-plated copper center conductor
- Bonded foil shield with 95% tinned-copper braid coverage
- Durable construction for studio and production environments
- Available in standard and custom lengths
- Multiple jacket colors available
- Hand assembled and individually tested in the USA
- Lifetime Connector Replacement Warranty
Connect Standard BNC and HD-BNC Equipment
Standard BNC is widely used on professional cameras, monitors, switchers, converters and other broadcast-video equipment. HD-BNC is a smaller 75-ohm connector used on equipment that requires more video connections in a limited amount of panel space.
This BNC-to-HD-BNC cable connects those different interfaces while maintaining a professional 75-ohm signal path. It is ideal when one device has a traditional BNC port and the other has a compact HD-BNC port.
The full-size Belden 4505R RG59 construction provides a thicker and more durable cable than Mini RG59. Its 20 AWG conductor also delivers lower attenuation than smaller miniature coaxial cables, making 4505R a strong choice for demanding professional video installations.
Recommended Applications
- Standard BNC cameras to HD-BNC video equipment
- High-density video routers
- HD-BNC patch panels
- Broadcast television studios and control rooms
- 4K UHD production switchers
- Professional production monitors
- Multiviewers and video processors
- Video converters and recorders
- Mobile production trucks
- Fly packs and portable production systems
- Post-production and editing systems
- Live production and sports broadcasting
- Corporate and commercial AV installations
- Government and OEM systems
Supported SDI Formats and SMPTE Standards
Belden 4505R is a professional 12 GHz RG59 cable designed for 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 |
Maximum transmission distance depends on the SDI format, connected equipment, connectors, patch points, installation conditions and total signal path. Contact AV-Cables before ordering for a critical or unusually long cable run.
Belden 4505R vs. Belden 4855R
Both cables support professional 12G-SDI video, but their physical construction makes each one better suited to different installations.
| Feature | Belden 4505R | Belden 4855R |
|---|---|---|
| Cable type | Full-size RG59 | Mini RG59 |
| Nominal diameter | Approximately 5.92 mm | Approximately 4.04 mm |
| Center conductor | 20 AWG solid silver-plated copper | 23 AWG solid silver-plated copper |
| Rated bandwidth | 12 GHz | 12 GHz |
| Primary advantage | Lower attenuation and durable full-size construction | Smaller diameter and lighter weight |
| Best suited for | Studio, production and longer cable paths | Crowded racks and weight-sensitive installations |
HD-BNC vs. Standard BNC
HD-BNC and standard BNC can both 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 with 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 4505R Cable Specifications
| Specification | Details |
|---|---|
| Cable manufacturer | Belden |
| Cable model | 4505R |
| Cable construction | RG59 precision broadcast coax |
| Rated bandwidth | 12 GHz |
| Nominal impedance | 75 ohms |
| Center conductor | 20 AWG solid silver-plated copper |
| Insulation | Gas-injected foam polyethylene |
| Shielding | Bonded foil with 95% tinned-copper braid |
| Outside diameter | Approximately 5.92 mm / 0.233 inches |
| Jacket | PVC, CMR rated |
| Connector configuration | 75-ohm standard 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 the available standard lengths and jacket colors using the product options above. Custom lengths may be available when a standard option does not fit your installation.
Multiple jacket colors can help identify signal paths, organize equipment groups and simplify troubleshooting in professional production systems. Availability may vary by selected length and current material inventory.
Compatible Professional Video Equipment
This cable can connect compatible standard BNC and HD-BNC 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 the connector type and supported SDI format on both devices before ordering. 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 assembly combines genuine Belden 4505R RG59 coax with precision 12G-rated BNC and HD-BNC connectors.
- Genuine Belden 4505R 12 GHz broadcast cable
- Precision 12G-rated 75-ohm 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 BNC to HD-BNC Cable FAQs
What connectors are installed on this cable?
This cable has one precision 75-ohm male standard BNC connector and one precision 75-ohm male HD-BNC connector.
Is HD-BNC the same as standard BNC?
No. HD-BNC is a smaller high-density connector. HD-BNC and standard BNC have different physical sizes and cannot be connected directly without the correct cable or adapter.
Does this cable support 12G-SDI and 4K UHD?
Yes. This assembly uses genuine Belden 4505R 12 GHz coax and precision 12G-rated 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.
What is the difference between Belden 4505R and 4855R?
Belden 4505R is a full-size RG59 cable with a thicker 20 AWG center conductor and an outside diameter of approximately 5.92 mm. Belden 4855R is a smaller and lighter Mini RG59 cable with a 23 AWG conductor. Both are designed for professional 12G-SDI applications.
Why should I choose full-size RG59?
Full-size RG59 is an excellent choice when durability, lower attenuation and stronger cable construction are more important than minimizing cable diameter and weight.
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.
