Product Description
Long-Distance Professional 12G-SDI Cable for 4K UHD Video
AV-Cables Belden 4694R 12G UHD-SDI BNC cables are designed for professional broadcast, live production and commercial AV systems requiring reliable 4K UHD signal transmission over longer cable runs.
Built with genuine Belden 4694R full-size RG6 coaxial cable and professional true 75-ohm BNC connectors, these assemblies provide a high-performance signal path for SD-SDI, HD-SDI, 3G-SDI, 6G-SDI and single-link 12G-SDI video.
Belden 4694R uses an 18 AWG solid silvered-copper conductor, gas-injected foam polyethylene insulation and a 100% foil plus 95% tinned-copper braid shield. Its larger RG6 construction provides lower attenuation than RG59 and Mini RG59 cable, making 4694R the preferred AV-Cables option for longer 12G-SDI cable runs.
Every AV-Cables 4694R assembly is hand assembled in the USA and individually tested before shipment.
Why Choose Belden 4694R?
Long-Distance 12G-SDI Performance
Full-size RG6 construction provides lower signal loss than smaller RG59 cables, making 4694R ideal for longer 12G-SDI runs.
Designed for 4K UHD
Belden specifies 4694R for 4K single-link 12 Gb/s UHDTV, 4K D-Cinema and other professional UHD applications.
18 AWG Solid Silvered-Copper Conductor
The larger conductor helps reduce attenuation over long cable runs while maintaining the 75-ohm impedance required by professional SDI systems.
Professional Shielding
A 100% Duobond® II foil shield combined with 95% tinned-copper braid provides excellent shielding for professional video environments.
True 75-Ohm Signal Path
Professional 75Ω BNC connectors help maintain proper impedance throughout the completed cable assembly.
Built and Tested in the USA
Every assembly is hand built and individually tested by AV-Cables before shipment.
12G / 6G / 3G SDI Performance
Belden 4694R is engineered for high-bandwidth professional serial digital video.
| SDI Format | Recommended Maximum Cable Length* |
|---|---|
| 12G-SDI / 4K UHD | Up to 250 ft |
| 6G-SDI | Up to 375 ft |
| 3G-SDI | Up to 500 ft |
| HD-SDI / SD-SDI | Longer runs possible |
Transmission distances are approximate. Actual maximum distance can vary depending on source equipment, receivers, connectors, patch panels, bulkheads and installation conditions.
Belden 4694R Technical Specifications
| Specification | Details |
|---|---|
| Cable | Belden 4694R |
| Coax Type | RG6 |
| Impedance | 75 Ohm |
| Nominal Cable OD | 0.274 in / 6.96 mm |
| Center Conductor | 18 AWG Solid Silvered Copper |
| Insulation | Gas-Injected Foam Polyethylene |
| Shielding | 100% Foil + 95% Tinned-Copper Braid |
| Jacket | PVC |
| Rating | CMR |
| Connector Type | BNC Male to BNC Male |
| Connector Impedance | True 75 Ohm |
| Maximum SDI Format | 12G-SDI |
| 12G Standard | SMPTE ST 2082-1 |
| 6G Standard | SMPTE ST 2081-1 |
| Assembly | Hand Assembled in USA |
| Testing | Individually Tested |
Belden also specifies a minimum return loss of 15 dB from 4.5–12 GHz, with nominal 75Ω impedance and an 85% velocity of propagation.
Supports Professional SDI Video Formats
This 4694R BNC cable is designed for professional:
12G-SDI • 6G-SDI • 3G-SDI • HD-SDI • SD-SDI • 4K UHD Video
Ideal for systems requiring high-bandwidth SDI transmission with the additional distance capability of full-size RG6 coax.
Professional Applications
Belden 4694R 12G-SDI cable assemblies are an excellent choice for:
- Broadcast cameras and studio cameras
- 4K production switchers
- SDI routers and distribution systems
- Production trucks
- Mobile broadcast systems
- Broadcast studios
- Engineering racks
- Fly packs
- Video walls and displays
- Live event production
- Stadium and venue AV systems
- Houses of worship
- Corporate AV installations
- Schools and universities
- Government AV systems
- Permanent SDI installations
- Long-distance 4K SDI runs
4855R vs. 4505R vs. 4694R
AV-Cables offers three primary Belden 12G-SDI coax sizes, allowing you to choose the right balance of cable diameter, flexibility and transmission distance.
| Cable | Cable Type | Diameter | Best Use | Approx. 12G Distance |
|---|---|---|---|---|
| Belden 4855R | Mini RG59 | 4.04 mm | Racks, patching & lightweight runs | ~150 ft |
| Belden 4505R | RG59 | 5.92 mm | General-purpose & medium runs | ~200 ft |
| Belden 4694R | RG6 | 6.96 mm | Long-distance 12G runs | ~250 ft |
Belden's current 12G lineup confirms these three constructions as Mini RG59, RG59 and RG6 respectively.
When Should You Choose 4694R?
Choose Belden 4694R RG6 when maximum 12G transmission distance is more important than minimizing cable diameter.
For shorter equipment-rack runs or applications where a thin, lightweight cable is important, choose 4855R Mini RG59.
For medium-distance runs where you want a balance between cable size and 12G performance, choose 4505R RG59.
For longer professional 12G-SDI runs, choose 4694R RG6.
Built for Professional Broadcast & AV
AV-Cables manufactures professional cable assemblies for broadcast, video production, live events, studios, houses of worship, corporate AV and commercial installations.
Our 4694R BNC cables are:
Hand Assembled in the USA
Individually Tested
Built with Genuine Belden 4694R RG6
Available in Multiple Lengths and Colors
Custom Lengths Available
Lifetime Connector Replacement Warranty
Need a special length or production quantity? Contact AV-Cables for custom cable assemblies.
