Product Description
Professional 6G-SDI BNC Male-to-Female Extension Cable
Extend an existing SDI cable without using a separate barrel adapter. This professional BNC extension cable combines one BNC male connector with one female BNC jack and is manufactured with genuine Belden 1855A Mini RG59 75-ohm coaxial cable.
The thin, lightweight construction makes it ideal for cameras, monitors, equipment racks, patch panels, fly packs and other installations where cable size, flexibility and weight matter.
Every extension cable is hand assembled in the USA, individually inspected and tested for reliable professional video performance.
6G-SDI BNC Extension Cable Features
- BNC male-to-female extension configuration
- Extends an existing BNC cable without a separate barrel adapter
- Supports SD-SDI, HD-SDI, 3G-SDI and 6G-SDI formats
- Genuine Belden 1855A Mini RG59 coaxial cable
- Professional true 75-ohm BNC male and female connectors
- 23 AWG solid bare-copper center conductor
- Compact 4.04 mm nominal cable diameter
- Thin and lightweight compared with standard RG59 cable
- Foil shield with 95% tinned-copper braid coverage
- Flexible design for cameras, racks and production equipment
- Black cable jacket
- Available in lengths from 1 to 25 feet
- Hand assembled and individually tested in the USA
- Lifetime Connector Replacement Warranty
Extend Your SDI Cable Without a Barrel Adapter
A traditional SDI extension often requires a separate female-to-female BNC barrel coupler between two standard BNC male cables. This extension cable incorporates the female BNC connection directly into the assembly.
Instead of using:
BNC cable → barrel adapter → second BNC cable
You can use:
Existing BNC cable → AV-Cables extension cable → equipment
This reduces the number of separate components and provides a cleaner, more convenient extension connection.
Supported SDI Formats and SMPTE Standards
| Video Format | SMPTE Standard | Supported |
|---|---|---|
| SD-SDI | SMPTE 259M | Yes |
| HD-SDI | SMPTE 292M | Yes |
| 3G-SDI | SMPTE 424M | Yes |
| 6G-SDI | SMPTE ST 2081-1 | Yes |
| 12G-SDI | SMPTE ST 2082-1 | No—select Belden 4855R |
Maximum transmission distance depends on the SDI format, total combined cable length, connected equipment and installation environment. Contact AV-Cables for help with critical or extended-distance applications.
Choose the Right BNC Extension Cable
| Cable | Cable Size | Maximum Format | Best Use |
|---|---|---|---|
| Belden 1855A | Mini RG59, 4.04 mm | 6G-SDI | Thin, lightweight rack and equipment extensions |
| Belden 1505A | Standard RG59 | 6G-SDI | Larger-diameter 6G extension applications |
| Belden 4855R | Mini RG59, 4.04 mm | 12G-SDI | Single-link 12G-SDI and 4K UHD systems |
View the Belden 1505A 6G-SDI BNC Extension Cable or the Belden 4855R 12G-SDI BNC Extension Cable .
Belden 1855A Cable Specifications
| Specification | Details |
|---|---|
| Cable | Belden 1855A Mini RG59 |
| Connector A | BNC male, true 75 ohm |
| Connector B | Female BNC jack, true 75 ohm |
| Impedance | 75 ohms |
| Center Conductor | 23 AWG solid bare copper |
| Shielding | Foil shield with 95% tinned-copper braid |
| Nominal Cable Diameter | 4.04 mm (0.159 in) |
| Jacket | Black PVC, CMR rated |
| Bandwidth | Up to 6 GHz |
| Supported Formats | SD-SDI, HD-SDI, 3G-SDI and 6G-SDI |
| Assembly | Hand assembled and individually tested in the USA |
| Warranty | Lifetime Connector Replacement Warranty |
Available Extension Lengths
Available lengths include 1, 2, 3, 6, 10, 15 and 25 feet. Contact AV-Cables if you need a custom length or specialized connector configuration.
Typical Applications
- Broadcast cameras and camera rigs
- Production switchers and video routers
- SDI monitors and recorders
- Video converters and signal processors
- Patch panels and equipment racks
- Fly packs and mobile production systems
- Broadcast studios and control rooms
- Corporate and educational AV systems
- Houses of worship and live production
Why Choose AV-Cables?
- More than 20 years of professional cable-assembly experience
- Genuine Belden broadcast coaxial cable
- Precision true 75-ohm BNC connectors
- Professional crimp construction and strain relief
- Every assembly is individually inspected and tested
- Custom lengths and volume pricing available
- Hand assembled in the USA
- Lifetime Connector Replacement Warranty
Browse all available configurations in our SDI BNC Extension Cable category .
6G-SDI BNC Extension Cable FAQs
How does this extension cable connect?
Connect the female BNC jack to the male BNC connector on your existing cable. Connect the BNC male end of the extension to your compatible SDI equipment.
Do I need a separate BNC barrel adapter?
No. The extension cable has an integrated female BNC jack, eliminating the need for a separate female-to-female barrel adapter.
Does this cable support 6G-SDI?
Yes. Belden 1855A supports SD-SDI, HD-SDI, 3G-SDI and 6G-SDI applications.
Does this cable support 12G-SDI?
No. Select the Belden 4855R BNC extension cable for single-link 12G-SDI applications.
Does the extension reduce the allowable transmission distance?
The extension increases the total cable-run length. Signal performance depends on the combined length of both cables, the SDI format, connected equipment and installation environment.
Is the cable directional?
No. This is a passive 75-ohm cable assembly. The male and female connector arrangement determines how it physically connects, but it does not convert or change the video signal.
Where is the cable assembled?
Every cable is hand assembled and individually tested in the USA.
