RDL FP-VDA4 – 1x4 Composite 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 FP-VDA4?
The RDL FP-VDA4 is a 1x4 NTSC/PAL composite video distribution amplifier with BNC connections and a loop-through output. Bandwidth is flat to 10 MHz, and gain is adjustable from unity to +6 dB from the top panel. The compact FLAT-PAK chassis powers from 24 Vdc and can pass power to additional FLAT-PAK modules.
How does it work?

The FP-VDA4 bridges a 75 Ω video line with a 1 kΩ input, so the source can loop through to another device. One input BNC accepts the signal and a second LOOP OUT jack passes the source on. If the input needs 75 Ω termination, the provided terminator plugs onto the LOOP OUT jack. Four source-terminated outputs deliver 1 V p-p into 75 Ω, and unused outputs need not be terminated. Frequency response is 10 Hz to 10 MHz within ±0.2 dB, with output isolation above 45 dB. A top-panel GAIN potentiometer sets gain from unity to +6 dB. Power is 24 Vdc at 60 mA through a barrier block or dc jack, and a second jack on the other end feeds more FLAT-PAK modules. For rack installation, use RDL FLAT-PAK accessories such as the RDL FP-HRA or RDL FP-RRA.
What are the key features?
- Four video outputs — Distributes one composite source to four 75 Ω outputs.
- Loop-through input — LOOP OUT jack passes the source on, with a terminator provided.
- Adjustable gain — Unity to +6 dB from the top panel.
- Wide bandwidth — Flat to 10 MHz for NTSC or PAL operation.
- Low differential errors — 0.1% differential gain and 0.1 degree differential phase.
- Power pass-through — Second dc jack feeds additional FLAT-PAK modules.
Where is it typically used?
- Government space
- Training room
- Broadcast studio
- Multi-purpose room
- Auditorium
Technical Specifications
| Model | FP-VDA4 |
| Input Impedance | 1 kΩ (Bridging 75 Ω Line) |
| Gain | Unity to +6 dB (adjustable) |
| Load Impedance | 75 Ω |
| Outputs (5) | 1 LOOP OUT from Input Signal; 4 amplified outputs |
| Output Level | 1 V p-p (into 75 Ω) |
| Frequency Response | 10 Hz to 10 MHz (± 0.2 dB) |
| Noise | < -75 dB (below 1 V p-p) |
| Output Isolation | > 45 dB |
| Differential Gain | 0.1% |
| Differential Phase | 0.1 degree (measured at 10% and 90% APL) |
| Connector Type | BNC |
| Ambient Operating Environment | 14° F to 131° F (-10° C to 55° C) |
| Power Requirement | GROUND-REFERENCED, 24 Vdc @ 60 mA |
| Dimensions | Height: 1.34 in 3.40 cm; Width: 3.25 in 8.26 cm; Length: 4.43 in 11.25 cm |
Frequently Asked Questions
Which video standards does it support?
NTSC and PAL composite video.
Do unused outputs need terminators?
No. RDL states that unused outputs need not be terminated.
How is the input terminated?
Plug the provided 75 Ω terminator onto the LOOP OUT jack when termination is required.
How is it powered?
24 Vdc at 60 mA, ground-referenced, through the barrier block or dc power jack.
What connectors does it use?
BNC jacks for the input, loop out and four outputs.
What warranty does it carry?
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.
Can Creation Networks help design the system?
Yes. Our team specifies, programs and installs video distribution systems for commercial projects nationwide. Call (888) 230-3661 for a quote or design review.
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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