Portable RF-over-fiber box designed for long-distance RF signal transport in broadcast, film and live production. It operates over single-mode fiber to preserve signal integrity over extended runs with minimal loss and low noise. The unit supports two RF channels in iso-frequency transmission (PFL-R2) or two diversity channels in receive mode (PFL-T2). Battery power via a standard V-Lock is available, with a DC power supply included as backup. An internal, temperature-controlled fan provides cooling, while a side port keeps fiber connections accessible; external fiber uses OpticalCON Duo.