The 50PA-659 from JFW Industries is a Handover Test System with AC Supply Voltage 100-240 VAC @ 47-63 Hz, Attenuation 0 to 127 dB, Frequency 100 MHz to 1 GHz, Input Power 20 dBm, Insertion Loss 28.5 to 30 dB. Tags: Rack Mount, Full Fan Out. More details for 50PA-659 can be seen below.