... sensitivity 4.8digits LED display MCH Frequency Counter, HC-F1000L Frequency Counter Features Range HC-F1000C:1Hz~1GHz,Max.up to 1.5GHz HC ... -F1000L:10Hz~1GHz,Max.up to 1. ... are subject to change without prior notice. HC-F1000L Frequency Counter, digital frequency counter, from 10Hz-1000MHz continuously variable, max. 1.3GHz