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Your cart is empty.Measuring Frequency Range: 1Hz~50MHz Signal Frequency: Max.30V Battery: 1 x 9V battery(not included) Power Supply: USB/external power(5~12V) Color: Yellow Material: PCB, acrylic Size: PCB Board: L*W: 6.3*4.9cm(2.48*1.93in) Finished: L*W*H: 7.3*5.8*1.7cm(2.87*2.28*0.67in) Package Includes: 1 x DIY frequency tester kit 1x USB cable Note: - The battery is not included. - Please refer to the measurement. Tiny measuring error is allowable in normal range. - There might be a little color difference due to the monitor, camera or other factors, please refer to the physical item.
Michael Lloyd
Reviewed in the United States on January 11, 2025
Likes: all the parts were in the package. The board is a simple old school design with lots of room. The transistor footprints were huge, like 1980's huge, but there was no problem with installing any component.Dislikes: The case is nice but the length of the screw (170mm) supplied screws is exactly the same as the outside to outside measurement of the case. You can't install a nut on the screws because there are no threads. The same applies to the short screws (60mm) that appear to be supplied to hold the board down.
T. L. C.
Reviewed in the United States on January 17, 2024
Nice board! Not so nice “instructions” Totally horrible hardware (both sets of screws were too short to be usable)
P. S.
Reviewed in the United States on March 31, 2023
I bought this as I wanted a frequency counter, something descriptions and reviews assured me this would do.I excitedly received my package and instantly tore into it.Assembly was straightforward and uncomplicated.Upon completion and application of power, I was rewarded with a pretty seven segment display, but it didn’t do anything of recognizable value.Exposure to all manner of RF well below its maximum frequency range did nothing to change the display and it certainly was not displaying the RF frequency applied.I will most likely stupidly buy another in stupid hope it might work second time around.It might require a third attempt as we all know, third time’s the charm!Oh yeah, I forgot the gratuitous comment on my soldering ability!I am well educated and most of career has been spent in positions with the title of Engineer.I have held an amateur radio license since 1977 and consider myself skilled at such things as soldering and electronics assembly and to a degree, design engineering. I doubt it was my lack of skills or ability that prevent this device from functioning.DE WD9HRP
Kelly A. Burton
Reviewed in the United States on May 18, 2022
Was easy to put together. The docs were clear enough to figure out what went where. Fired it up and it worked first time. Nice that it comes with a barrel to USB plug, however most of us probably have a bench supply, so I did not use it. The only downside was no instructions for programming it, however other reviews have shown how to do this. Packaging could have been a little better, all the parts tossed in the bag, so some pins were bent, but easily fixed for installation on the PCB.
Dan Martin
Reviewed in the United States on May 15, 2022
Excellent product for the price. I repair old tube transceivers and... I thought I had a bad heterodyne crystal (18.275mc). Well, thanks to this baby I was proven incorrect and it's on to more troubleshooting for that radio.I slapped this tester/counter together in an afternoon over a couple of beers. The top reviews are pretty honest- The instructions are pixelated and the mounting doesn't really work with the component lead "teets" poking out from the underside... I used longer mounting screws and some extra hex nuts for standoffs- The circuit board has enough clearance from adjacent traces to allow for conductive standoffs.There was a comment or two on modifying the power supply, which I didn't really get. This tester needs 5v and comes with a USB power cable... your standard cellphone "wall wart" will foot the bill (double check- output voltage is usually 5V to USB connections).Anyways, the tester deserves five stars for the $15 price tag. You can build the whole thing off of the component schedule. I would advise checking resistors with a ohmmeter during assembly, but the taped component assortment makes it pretty obvious.
Dave
Reviewed in the United States on November 18, 2022
Instructions were faded, small, a little difficult to interpret and wrong when it came to Crystal test point and J1. I had to de-solder the two 3 pin/ 3 socket terminals and re-solder them after following the instructions and looking at the photo that the seller provided. The 3 Pins belong at 'J1' and the 3 sockets belong where it says 'Crystal testing'.When I de-soldered a Trace came up, I tried adding a small wire, in place of the trace and the unit never worked. It does indicate '0' when J1 jumper is in the lower position, but won't identify any frequency from my signal generator or from various crystals (in the upper position).All in all, I guess it was worth the soldering practice, but I'm a little bumbed that I didn't end up with a working meter to determine frequency. I think most people have better luck than I and have a working meter. If the seller want's to send me a replacement due to circumstances, I wouldn't turn it down.'
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