SURECOM SW-102 Meter 125-520 Mhz Digital VHF/UHF Power & SWR Meter SW102 Radio
Visible operation: Frequency,Power,SWR,FW,RW. Insertion Loss: < 0.15dB(VHF), < 0.25dB(UHF). Frequency counter function. low insertion loss (0.3 decibels or less) structure allows it to be permanently connected.