Yi Zhan Tong Anysecu SF-103 Portable Frequency Counter 2MHz - 2.8GHz For Two Way Radio Upgrade version of SF401

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...

El equipo no ha funcionado desde la recepcio.Le he acercado diferentes tipos de controles remotos y ninguno detecta la frecuencia como lo menciona en la publicidad.

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 is a nice frequency counter/meter, I use it all the time and it has takes loads of abuse. I just recently read the reviews and was surprised by how many negative comments there were. If it died today, I would likely buy another.It will not work great on very low powered equipment as it was delivered, but adjusting the sensitivity or "detect Level" on the menu will help that out a lot (lower # means more sensitive as I recall). Seems that several users have also missed the F2 button that freezes the counter (toggles between Stop and Run). Yeah, there's no memory, but this is a $50 meter.I have used this meter for over 3 years and it functions just great. No, this is not the $1800 lab grade counter I bought 25 years ago, but it should serve the average electronic hobbiest well. It's handy as all out and I use it several times a week. In that time I don't think I've had to switch my bench counter on more than a few times. It's probable going to need a fresh battery soon, but that shouldent be a big deal to change when the time comes.

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.