BNC 75 Ohm Rotary Joint DC to 12 GHz Antenna Positioner
1. Product Overview
The YZRF-4855R-12G-01 is a high-performance single-channel 75 Ohm RF rotary joint, precision-engineered around a custom BNC interface with 4855R pigtail leads.
Specifically designed for broadcast camera pedestals, antenna positioners, and SATCOM terminals, it enables seamless 360-degree continuous rotation while transferring critical video/RF signals without interruption.
Featuring a compact footprint of Φ 25.4 x 18.3 mm and a rugged 316L stainless steel housing, it covers DC to 12 GHz frequencies, effectively eliminating cable twisting and phase drift.
2. Key Features
Interface Design
75 Ohm custom BNC (BNC-J / BNC-F) with 4855R pigtail leads, easy field wiring.
High Frequency
DC to 12 GHz single channel, IL 1.5 dB, VSWR 1.6, stable under continuous rotation.
Compact Build
Compact Φ 25.4 x 18.3 mm body with 3-hole flange mount for tight pedestal heads.
Protection
IP61 sealed housing, 316L stainless steel for outdoor and tracked-vehicle use.
Durability
5 million revolutions at 60 RPM continuous, starting torque under 0.3 N.m.
Qualified
GJB 150.9A / 150.16A / 150.18A qualified for humidity, vibration and shock.
3. Technical Specifications
| Parameter | Specification |
|---|---|
| Model | YZRF-4855R-12G-01 (316L) |
| Channel | 1 |
| Interface | Custom BNC 75 Ohm (BNC-J / BNC-F) with 4855R pigtail |
| Frequency Range | DC ~ 12 GHz |
| Insertion Loss | 1.5 dB |
| IL Variation | 0.2 dB |
| VSWR | 1.6 |
| VSWR Variation | 0.25 |
| Average Power | 10 W |
| Peak Power | 100 W |
| Impedance | 75 Ohm |
| Starting Torque | <= 0.3 N.m |
| Running Torque | <= 0.2 N.m |
| Dimensions | Φ 25.4 x 18.3 mm |
| Speed | 60 RPM |
| Service Life | >= 5,000,000 revolutions |
| Operating Temp | -40 to +70 Celsius |
| Storage Temp | -55 to +85 Celsius |
| Housing Material | 316L Stainless Steel |
| Protection Class | IP61 |
| Environmental | GJB 150.9A / 150.16A / 150.18A (tracked vehicle) |
4. Application Scenarios
In a broadcast camera pedestal or antenna positioner, the stationary side connects to the camera control / IF chain while the rotating side carries the video or RF feed to the rotating head. Typical uses include outside broadcast (OB) vans, satellite news gathering (SNG) vehicles, L/S-band SATCOM terminals and tracked-vehicle radar antennas.
