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Just because it is called a freq counter, it doesn't mean it is capable of making critical adjustments.  That is where this comparison begins and ends.  You wouldn't want to set your Rolex watch to a sun dial; would you? Those little freq counters are barely capable of being accurate with the five or six digits or the 1kHz/minimum resolution they have!


I use a Protek 9100 and a Hewlett/Packard 5316A when doing radio alignments.  The Protek is accurate up to +/-10Hz and the HP is accurate up to +/-1Hz.  But a decent freq counter needs to be accurate for +/-10Hz to do radio work - so long as it is calibrated.