ANYSECUSF-103 A-SF103 Portable Frequency Counter 2MHz - 2.8GHz for Two Way Radio Upgrade Version of SF401

An accurate frequency counter at this price point gets 5 stars. It consistently nails the frequency within .001 MHz, and accurately determines tones. The DMR functionality also performs as expected. UI & manual are not the greatest, and it doesn't hold the last frequency on the display; but for the price - it's great. I notice other reviewers having issues with it ceasing to function, and I suspect many have just overloaded the unit and damaged it. Do not put the transmitter right next to the counter, I keep them close to arms length on either side of me and it reads just fine.

I purchased this to figure out what frequency and lock code my local elementary school admin was using as they coordinate daily pickups from parents and school buses. From more than 50' away, I was able to capture the frequency (they weren't using any tones) and was quickly able to tune my Baofeng UV5R to the frequency. At that point I could hear what they were saying. Doesn't make any difference in the routine, or how I pick up my kids, but it does kill some of the boredom while waiting.Another use that might be of interest... If you've ever been stuck behind a road flagger allowing only one side to go (and you've been waiting forever) you can also listen in to what they're saying....

This thing actually works. I am deducting one star because there is not much of a manual and what you can find online is pretty hard to parse.I think this is a newer model than the black SF401 that you will also find on Amazon. Again, the documentation is scarce and the numbering scheme does not make determining that easy. There is more information on the screen on this model. There seem to be a number of companies putting their name on the same unit so look around. I think I might have paid $20 too much for mine, but I was rewarding this seller for doing a better job of providing photos and info in their description of the device. Also, the cheaper one has a name that makes it sound like a breakfast item at McDonalds (a McBazel). But that's good for a joke among your ham buddies when you pull it out.Thankfully it is mostly intuitive to use. However, I initially thought it would not read DMR transmit frequencies. Then I later figured out how to put it into digital mode. Once it was in digital mode it worked fine. The setting is not in the menu that you are most likely to look for it in. To get to it you have to stop the scanning, and then hit F3. That will let you scroll down (again hitting F3 to scroll) and then toggling Analog/Digital.I am using it to figure out what frequencies a set of DMR radios have been programmed to so I can match other radios to them.

Was a bit skeptical about buying this device because of its low price. But it does work!The SF-103 is geared towards ham radio operators, to allow them to verify that their radio is programmed correctly. For analog, it will show transmit frequency; and if repeater access tones (CTCSS/PL/DCS) are being used, what is being transmitted. For digital transmissions, it will display transmit frequency (although I wish it would also show DMR color code/timeslot - maybe in a future update).The wide 2 MHz-2.8 GHz range means that it will also work in the HF bands for measuring frequency and relative signal strength.The user manual is somewhat lacking and in poor English, but the unit is relatively easy to figure out.

Works pretty much as advertised. It appears to be very close in frequency (within 200Hz at 146 MHz and 447 MHz). Very pleased with the meter. Nice construction and looks good. One small fault, though - the CTS tone frequency on 447 MHz is incorrect. It indicates 88.3 when the actual CTCSS tone is 156.7 Hz. CTS tone freq on 147 MHz is correctly displayed.

No accuracy to speak of. Even with a better, higher gain, directional antenna this frequency counter still can't seem to get the frequency right. I'm extremely disappointed with how badly this works. A friend of mine bought one a few years back and it worked okay, I understand this isn't a professional grade piece of equipment, but it should at least function of it's going to be sold. Huge bummer.

This is a excellent Frequency Counter. Very accurate, easy to use and the price is just right... I highly recommend buying this frequency counter for all your radio research needs...

Does analog and does DMR Digital. A little awkward to program until you get used to it. Holds a charge well. Fairly accurate. Could be a bit more sensitive but it works in our shop OK.