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 Wanted, frequency standard, West Midlands 
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Post Wanted, frequency standard, West Midlands
I have 3 counters, and with an input signal they all give different results. Not a great deal, but enough to think my counters need calibrating.
I usually stuff 28.000 as a known signal, but that of course is reliying on the fact (?) that my TS950 is accurate.
Has anybody in west Mids got one I could borrow, or visit and get at least one of these aligned? Alternatively anybody know of somebosy who does it foar a living, for a sensible fee, ie "I'm not made of money" rate?


Thu Oct 05, 2017 11:34 pm
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 Wanted, frequency standard, West Midlands 
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Post Re: Wanted, frequency standard, West Midlands
Do any of your frequency counters have an external clock input? If so, consider a GPS governed clock. You can buy them as a kit.. not too expensive, and worth buying. You'll not get much more accurate than that.

If none of them do, then it is indeed a case of calibrating them, and again, a GPS governed 10MHz clock will give you a reference source.


Something that's worth investing in if you ask me, as even after getting someone to calibrate it... how long before you start to wonder about it's accuracy again?


What are you using them for? Are they used as lab test equipment, or just to check the accuracy of your radios? If the latter... you're probably better off zero beating against a time/standard signal like WWV or even a broadcast station with known accuracy. Radio China International are usually strong and seem to be accurate. Just remember, the higher the frequency you zero beat against, the more accurate it will be.

That will get you very close unless you also want to ensure a radio is precisely on frequency on VHF/UHF... in which case, yes... you'll need an accurate piece of test gear.

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Fri Oct 06, 2017 6:27 am
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