L-Band Dual Downlink and Uplink | PL27220 / PL27230
The PL27220 and PL27230 from Global Foxcom’s Platinum Series operate from 950 to 3000 MHz and are dual L Band fiber optic links for high density uplink and downlink. Each module carries two L Band paths in a compact design, supporting transmission up to 10 km within a 4 dB optical budget or up to 25 km with 1550 nm lasers at 10 dB.
Features & Benefits
- Supports up to 24 uplinks or downlinks per chassis
- Frequency range 950–3000 MHz
- Transmission up to 10 km (4 dB) or 25 km (10 dB with 1550 nm lasers)
- Dual L-Band RF streams per card
- DigiRF™ control via front-panel LCD or SNMP
- IMizer™ calibration of IMD and CNR for signal quality optimization
- Hot-swappable modules for continuous operation
- LNB voltage control per module (+13 V / +18 V)
- Compact chassis requiring minimal rack space
The dual Platinum link provides a compact solution for multi-channel uplink and downlink operations where chassis capacity matters. Each PL27220 / PL27230 card delivers two L-Band paths within a single module, providing high-density performance in a small footprint. Transmitters and receivers are hot-swappable, and each module includes independent LNB voltage control for flexible deployment. The PL7010C chassis serves as the hosting platform for these modules, enabling scalable configuration and reliable power management across large installations.
Basic Details
| RF Specification | Value: Down / Up |
| Frequency Range – Bandwidth | 950 – 3000 MHz |
| Amplitude Response @ Unity Gain | ±1.5dB |
| Noise Figure | 10dB / 24dB |
| Output IP3 (OIP3) | +3 dBm / 20dBm |
| Input Signal Range – Total Power | -25 to -50dBm / +2 to -30dBm |
| RF Output Signal Range – Total Power | -25 to -45dBm / -5 to -30dBm |
| Optical Specifications | |
| Optical Budget / Distance 1310nm 1550nm | 4dB (10Km) / 10dB (25Km) |
How many L-Band channels can be supported in one chassis?
A PL7010C chassis can hold up to 12 dual-link cards, providing a total of 24 independent L-Band paths. This configuration is ideal for teleport facilities or satellite ground stations requiring multiple simultaneous feeds.
What are the supported transmission distances?
The system supports up to 10 km using a 4 dB optical budget, or up to 25 km when configured with 1550 nm lasers and a 10 dB optical budget. This enables flexible deployment for both short and long-distance applications.
How is IMizer™ calibration used during operation?
IMizer™ automatically adjusts the laser drive to meet the selected IMD level, aligning IMD and CNR without the need for two-tone testing. This simplifies setup and maintains consistent signal quality across all channels.
Can modules be replaced or maintained without downtime?
Yes. Each transmitter and receiver is hot-swappable, enabling maintenance or replacement while the system remains active. Local and remote monitoring through DigiRF™ ensures quick diagnostics and continuous uptime.