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Old 14th Mar 2017, 3:07 pm   #2
MrBungle
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Join Date: Jun 2016
Location: London, UK.
Posts: 3,687
Default Re: Frequency counters

They're usually within a few Hz or so of reality. Depends on the crystal quality really.

The main problem is they will load the generator terribly, particularly at higher frequencies and aren't very sensitive.

TBH I'd hang around eBay etc. and grab a second hand Racal/Black Star/Thandar counter of some description. I've picked them up for less than £20 and they tend to have better sensitivity (down to 5mV), lower loading (1Mohm) etc. Plus if you know someone with a frequency standard or another accurate counter, you can compare it to that and adjust it. It might be 4-6x the price but it's 100x as good.
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