WR-180 Frequency extension option 180MHz for WR-G313i must be factory fitted
The G313i/180 receiver features extended frequency coverage from the standard 9kHz-30MHz to 9kHz-180MHz. This makes it possible to use this receiver for narrow-band communications in the VHF range. The receiver's variable IF bandwidth makes this receiver particularly suitable for surveillance and monitoring of airband and other civilian and military communications.