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Toon origineel

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  • 21/07/2017

    Frequency measurement: I managed to run it only if the input signal is between 4.7 and 5 volts (not to be exceeded). The signal goes directly to pin 3 of the PIC (5V max). An incoming signal amplification circuit must be provided. Quartz measurements: Very poor circuit. It depends a lot on the supply voltage, the temperature and the quartz frequency. Limited use. Measurement examples: (3,2748 MHz -> 0) (4,9152 MHz -> 4,9166) (16 MHz -> 16,001 16,006) (20 MHz -> 20,007) (22 MHz -> 22,007). Strange situation: if the power is about 9 volts, the 4.9152 MHz quartz give these results: -> 14,667 14,669 14,672 14,681 Third harmonica?) Under investigation.

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    Toon origineel
  • 06/01/2016

    This came with no instructions, but the PCB is labelled with component values so I found it very easy to assemble. A description of how to use the add/subtract functions can be found at http://www.qsl.net/dl4yhf/freq_counter/freq_counter.html (as mentioned by tom_pin in the product discussion). The display is much easier to read if you add a red filter. If I had the chance to make 1 change, I'd provide space on the PCB for 4mm sockets for ground and frequency signal in; then it would be easy to connect different sorts of test lead (e.g. pointy or spring hook).

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  • 05/05/2015

    It says to adjust the xtal frequency to 20.000 MHz. But doesn't say how. I would like to know how. Other than that, mine works excellently.

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    Toon origineel
  • 12/02/2015

    I bought two of these and have just put one of them together and it works a treat. I've got a box of crystals, collected over the years from old equipment and so on - In most cases, it displayed a couple kHz off from what the crystal was marked as. You can adjust it to a known exact frequency with the trimmer-capacitor. A friend of mine says he has some 32 kHz clock thingies that is are a damned sight more accurate than the crystals, so we can adjust it with that. crystal marked => read 4.000 MHz => 4.0000 MHz 6.000 MHz => 6.0008 MHz 9.04933 MHz => 9.0496 MHz 14.31818 MHz => 14.323 MHz 52.416 v=> 17.4something MHz * 1/3 of the fundamental It is well laid out, with all the components clearly marked on the PCB. Lack of any documentation is a small negative point, but not a problem, so still 5 stars. There is an extra 22p capacitor which I thought was spare, but in an earlier comment, someone has written a document for it, showing that the extra capacitor can be used if the low frequency readings are unstable. The construction is very straight forward and the other kit I bought will be my nine year old son's first soldering project :) Delivery was also very fast. It was marked as out-of-stock until 05/02/2015, but mine arrived on 10/02/2015.

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  • 02/02/2015

    Very easy to construct and test. Worked excellent first time after tuning. Good quality components and very high quality PCB. Good stability and good accuracy once setup. If I did have one grumble then it would be the quality of the variable tuning capacitor. Its very sensitive and would benefit from a slightly better quality capacitor to make sure it is accurate all the time, apart from that Excellent. I love it. Well done BangGood, another brilliant product that every toolbox should have, from the Radio Amateur like myself to the novice.

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    Toon origineel
  • 19/05/2019

    High Quality DIY Frequency Counter and Crystal checker. Works perfect !! Testing a 8700.000Hz crystal and a 50Hz input signal. See Pictures. Recommended !!!!

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    Toon origineel
  • 04/09/2017

    Perfect to read frequency.. For the the price I pay I am very satisfied...

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    Toon origineel
  • 06/08/2019

    Quite simple to build, useful but not always precise in the measure of quartz

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    Toon origineel
  • RICVIP1
    BR
    08/11/2018

    Thank YOU Please I did pay in September the RK560 frequency counter meter . Take pictures Photos the Bill Ticket that It did pay in date September 2018. I will wait the RK560 Frequency Counter Meter . Please read see pictures Photos the Bill Ticket. Thank YOU BANGGOOD very very much BANGGOOD.

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    Toon origineel
  • 12/05/2018

    Bon KIT

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