GQ 600 PRO Geiger Counter Nuclear Radiation Detector – Dosimeter for Alpha, Beta, Gamma, X-Ray – Portable Radiation Monitor with Real-Time Data, Global Data Sharing, LCD Display & USB

Just as the title says, it's an amazing Geiger Counter for the price point. I needed a pancake tube Geiger Counter for alpha detection and this gets the job done wonderfully. It's got a wonderful UI (multiple options on how to display the text and a screen that rotates to fit current orientation), a solid amount of detection customization (including voltage adjustment and accuracy requirements), and even wifi connectivity to upload live data to a server (I don't need it specifically but it's a nice feature to have). You could of course go for something like a Gamma Scout if you need more precision and more detection features. But you'd then be paying double and likely waiting a lot longer to receive it (they were on backorder last time I checked). This however arrived 5 days after I ordered it. Overall, it's a solid detector with a lot of great features, customization, and solid quality for a very affordable price. I'm definitely going to be looking to GQ for any future detector needs.

Great sensitivity and large display

My favorite part of this device is that the battery lasts for so long that even using it a hour or two a day, I didn’t charge it for an entire month. The only better radiation detector is the AlphaHound AB+G but that is $200 more than this. The Radiacode is great and I own one but only for spectroscopy. This device is what I take for hunting radioactive antiques. (Although since the Radiacode is small, I bring it too lol) oh and I have dropped this thing a dozen times. On rocks and other surfaces, the batteries fell out once lol but it’s still working flawless! Be careful to not let anything like the pancake probe though, I’ve heard on all devices they are sensitive so just be mindful.

I must say - if your are looking for an alpha-capable, "pancake" type detector with tons of feature - you cant go wrong with GQ-600 Plus. I have a whole bunch of different counters - Gamma Scout, Ludlum Model 3, Eberline ASP-1, Ludlum model 14C, SE International Alert Ranger and to be honest GQ-600+ is my favorite everyday counter! This design and execution has a lot of potential but some small details make it a bit annoying and unpolished. - plastic enclosure is made of thin brittle plastic which cracks VERY easily and feels extremely cheap - my unit cracked after 1 ft. drop onto a thick carpet (!!!) - the enclosure doesn't have the best ergonomics and feels a bit like you are holding a brick - buttons are missing any sort of markings and even for someone quite familiar with the unit, daily usage can be annoying when navigating thru the menu system. - the placement of the tube on the back of the unit is awkward, off-center and no markings on the front to remind of the exact location - this is really annoying when checking specific objects. I had to use a silver Sharpie to mark the tube's location and center on the front , around the display as a reference. - software has some bugs here and there and the whole UI is not quite polished - for an example when you have high reading (with 2 significant digits on the secondary display line) the "HIGH" msg partially covers the first digit making it unreadable. In Food Measurement mode another bug turns off the speaker and so on... They fixed the speaker bug in a new firmware release and didn't miss the chance to introduce a new one in the latest version when the unit will crash and restart, when it Text mode and reading is pretty high. - the company doesn't publish any firmware changelog or even the current version number and you just cant get the latest version from their website - you'll need to deal with their Support department back and forth until they send you an update. - they added a dosimeter function but did not update the manual for it. I love the wealth of information and features, the flexibility and settings and the large and readable display. The potential to be the best digital GM counter out there is definitely present but they need to go the extra mile and polish the UI, firmware and possibly revisit the flimsy enclosure. A protective cap on the back similar to the one of the Radiation Alert Ranger which can be used as an Alpha or Alpha+Beta shield would be a fantastic addition. Its a pity that GQ doesn't react to the feedback provided in their forum but there are enough good features in this counter for me to buy it again if need be.

The GQ GMC-600+ is a nice unit that's easy to use. The readings are easy to read. It also includes "Low," "Moderate," and "High" warnings based on the CPM reading. It would be nice if they provided a carrying case or protective boot. If you drop it on a hard surface, I doubt the plastic case will survive. I compared the GMC-600+ CPM reading with an S.E. International Ranger Alert reading with both of them flat on a granite countertop. The readings were essentially the same. I bought a uranium ore sample to use for testing/demonstration. It came in a metal container with a certification document from "Images SI Inc." stating that they tested the sample and measured 1,682 CPM using their GCA-07W geiger counter. To avoid contamination, I left the sample in its plastic bag while I tested it with my S.E International Ranger Alert and my GQ GMC-600+. Both the Ranger and the GMC-600+ have open windows with pancake detectors. Here are my results: Ranger readings: Direct contact with the plastic bag = 9,400 CPM Separated by a piece of paper = 6,400 CPM With plastic cap covering detector hole = 1,650 GQ GMC-600+ Direct contact with the plastic bag = 6,700 The Ranger has a fine grid over the detector opening. The GMC-600+ has a plastic mesh covering a screen. So the sample was about 5 mm further from the GM tube and partially covered by the plastic grid. My conclusion is that both the GMC-600+ and the Ranger are much more sensitive than the GCA-07W. The Ranger is the most sensitive probably due to the fine mesh protector and the proximity of the grid to the GM tube.

This product truly does everything you’d want it to, the battery life is truly incredible, yes it’s bulky, but it can be wore on a belt and transported quite easily, the case is plenty adequate for padding and usability. If you’re looking for the best all in one pancake, I don’t think you’ll be let down, note the beta response when taking measurements, as it performs extraordinary with radium but, with any pancake, has less ability with pure alpha sources

Contatore geiger eccellente, sonda davvero sensibilissima. I tempi di misurazione richiedono qualche minuto di campionamento, ma restituisce risultati davvero ottimi ed affidabili

exactly what i was looking for. design could be better though. something more friendly to hold/point. comes with a nice little case also, it is mini usb not even mini or usb-c :-(

Appareil ok, mais le prix à été surfait (pensant les frais de douane inclus) mais les frais de douane étaient en plus et exagérés!

A very good product with high sensitivity and accurate counting.

Very sensitive and quick dosimeter with pancake probe. Prepared to catch also alpha particles. I've read many times comparing of dosimeters on reddit, quora and this one is one of the best when considering cost to 500eur. Just plastic is not very robust and device is little overpriced.