R&S^®VU220L VHF Power Amplifiers

For ground-to-air and naval radiocommunications

Features

Features	Benefits for customer

Excellent cooling and monitoring Oversized heat sink Forced-air cooling of the power supply (permanent) and of the core amplifier section (sensor-controlled) Automatic switching to RF bypass mode in the event of malfunction eg high input power or test NOGO, poor VSWR at the output or other adverse operation conditions (eg over or undervoltage or critical heat sink temperature)	Continuous operation High communication reliability High MTBF
Excellent spectral purity (with R&S® Series200, 400U or M3SR) by Multi-stage high-pole harmonics filter and Circulator(s) most effectively integrated in front of the harmonics filter, both included as standard	Interference-free operation
Application-specific control interface connectors (2) for R&S® Series200, 400U or M3SR transmitters/transceivers	Ease of system integration Optimum operation
AC (main) and DC (standby) supply with automatic AC/DC switchover	High system flexibility High communication reliability
RF bypass integrated for normal power or transmit/receive operation	High system flexibility
Integrated test and service facilities POUT, VSWR and m TEST (sum GO/NOGO check) Test Interface integrated	Quick failure diagnosis and Ease of maintenance
Modular design Defined interfaces/specifications guaranteed	Low MTTR on LRU basis by change of module only