Racal-Dana 9917 UHF Frequency Meter. This high quality frequency meter covers the range 10Hz to 560MHz in two ranges, and has high sensitivity and a 'burst' mode. Follow this link to see the detailed specification: 9971 Spec. This particular example comes complete with the 04A ovened oscillator option, the handbook and the full service manual. This equipment is in full working order and has been tested for electrical safety.