RDL RU-VDA4B – NTSC/PAL 1x4 Video Distribution Amplifier, BNC is backordered and will ship as soon as it is back in stock.
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What is the RDL RU-VDA4B?
The RDL RU-VDA4B is a 1x4 composite video distribution amplifier with BNC connections for sending one NTSC or PAL source to four displays or recorders. Front-panel gain adjustment and a 1 V signal indicator make it easy to set correct levels over long cable runs. Its 1/3-rack RACK-UP format allows high-density rack mounting.
How does it work?

Video inputs and outputs are made on front-panel BNC jacks, and power connects through full-size barrier block terminals on the rear panel. The input stage has two jacks: one for the incoming signal and a LOOP OUT that passes the source signal on to other equipment. The input is bridging, so if 75 Ω termination is required, the terminator plugs onto the LOOP OUT jack. Four amplified outputs each deliver 1 V p-p into 75 Ω. A front-panel GAIN potentiometer adjusts gain from -1 dB to +7 dB (0.9 to 2.25 V p-p), helping compensate for cable loss. Frequency response is 10 Hz to 10 MHz (±0.2 dB), with differential gain and phase of 0.1% and 0.1 degree and output isolation greater than 40 dB. The module runs from ground-referenced 24 Vdc at 60 mA; RDL recommends the PS-24AS (USA) or PS-24AX (international), not included. Mount it with the RC-1UR 1RU rack chassis, RU-HRA1 10.4-inch rack mount or RU-SMA1 surface mounting plate.
What are the key features?
- Four amplified outputs — One composite source feeds four destinations at 1 V p-p into 75 Ω.
- LOOP OUT jack — The source signal passes through to additional equipment.
- Adjustable gain — Front-panel gain from -1 dB to +7 dB compensates for cable runs.
- 10 MHz bandwidth — Flat response to 10 MHz supports NTSC and PAL video.
- BNC connections — Professional BNC jacks on the front panel suit installed video systems.
- 1/3-rack RACK-UP format — The compact 1/3-rack width allows high-density rack mounting with RDL accessories.
Where is it typically used?
- Training room
- Government space
- House of worship
- Auditorium
- Broadcast studio
Technical Specifications
| Input | 1 kΩ bridging 75 Ω line |
| Outputs | 1 LOOP OUT; 4 amplified outputs |
| Output level | 1 V p-p into 75 Ω |
| Gain | -1 dB to +7 dB (0.9 to 2.25 V p-p, adjustable) |
| Frequency response | 10 Hz to 10 MHz (±0.2 dB) |
| Output isolation | > 40 dB |
| Differential gain / phase | 0.1% / 0.1 degree |
| Connector type | BNC |
| Power requirement | Ground-referenced 24 Vdc @ 60 mA |
| Operating environment | 32°F to 131°F (0°C to 55°C) |
| Dimensions | 1.7 x 5.8 x 3.0 in (4.3 x 15.0 x 7.7 cm) H x W x D |
| Shipping weight | 0.93 lb |
Frequently Asked Questions
Which video standards does the RU-VDA4B support?
It distributes composite NTSC or PAL video with 10 MHz bandwidth.
How do I terminate the input?
The input is bridging; if 75 Ω termination is needed, plug the terminator onto the LOOP OUT jack.
Can I boost the signal for long cable runs?
Yes. Front-panel gain adjusts from -1 dB to +7 dB.
Is a power supply included?
No. It needs ground-referenced 24 Vdc at 60 mA; RDL recommends the PS-24AS (USA) or PS-24AX (international).
How is it rack mounted?
Use RDL RACK-UP accessories such as the RC-1UR 1RU rack chassis, RU-HRA1 10.4-inch rack mount or RU-SMA1 surface mounting plate.
What warranty applies?
This product is covered by a 7-year RDL warranty. For warranty claims, RMAs or support, contact Creation Networks at (888) 230-3661 or sales@creationnetworks.net.
At Creation Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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