Philips PM6662 in Cary, NC, USA

120 MHz High Resolution Frequency Counter The PM6662 120 MHz Frequency Counter / Timer is a mutual compact, high-resolution, 9 digits, which measures frequencies from 10 Hz to 120 MHz (usually up to 160 MHz). With the option HF can be provided with an input that measure frequencies from 70 MHz to 1.3 GHz sensitivity control 15/50/150 mV and 0.5 / 1.5 / 5 V. Input impedance: 1 MOhm/30 pF.