Welcome to the radmon.org shop!
Here you will find some external detectors suitable for use with RadLog and pyradmon. radmon.org is an open system, so you can take and submit readings with any compatible hardware, e.g a kit from one of the geiger kit suppliers, a compatible commercial geiger counter, a homebrew geiger counter, any geiger counter with the audio method or one of the following units.

The radmon.org radbox-20

The radbox-20 is a weatherproof external radiation background monitoring device. It contains an SBM-20 tube, sensitive to gamma radiation and hard beta particles. It is designed to be mounted on a surface outdoors, e.g in the eves or on a wall of your house. It is fed with a single 5mm diameter high quality cable that is 10m in length. This should be ample to lead through a window or other cable outlet to your PC, single board computer or other homebrew device. The radbox-20 is powered from a USB connector and the pulses are detected by plugging the 3.5mm jack into an audio or microphone input. The typical configuration is to just plug the unit into your PC via the USB and microphone or line in connectors. Windows is supported via RadLog, see the download page. Linux is supported by pyradmon.




There are two styles to choose from:
Funky - the yellow and black graphical decoration
No graphics - no label at all

The LED and internal sounder for detections can be enabled and disabled. The case is sealed with a rubber gasket and rubber washers for the case screws and the cable entry gland and LED are sealed with rubber washers.

Here is the install location for my prototype unit, it is at standing working height for easy access. The higher the unit is, the better.



There are a few different options to consider when buying the radbox-20:

All radbox-20 versions sold out. More parts coming soon. Please let me know on the forum if you are interested.

Order progress

Progress on the orders will be reported via the forum. See the 'Projects' forum and the radbox-20 thread. Please register on the forums if you order a unit. You can contact me, mw0uzo, by PM if you have any questions. :)

Shipping costs

The shipping costs are £5 for UK orders and £12 for international orders via standard airmail (no tracking, allow 2-4 weeks for delivery) or £15 for a international, tracked service. Tracking may not be available in all countries.

Live Map

Map key:
Normal Warning Alert Experiment mode Dormant radioactiveathome.org stations


radmon.org is a place for experimenters, enthusiasts and background radiation monitoring. You can send background radiation readings from a wide range of geiger counters, home built or kit built or some commercial counters. We welcome high CPM experiments, your own station news - if it interests you then it interests us! You can send data via the windows application RadLog, the python script pyradmon, by BASH script and by your own code. You can put graphs and current reading indicators on your own website. Put yourself on the live map with your own radiation monitoring station! Put yourself into experiment mode and let everyone see your data. Use your geiger counter for a useful purpose to monitor background when it is not in use. RadLog has many useful features, data sharing to other users, FTP and email functions, check it out on the Download page.

Mariete in Madrid, Spain read 100CPM on 2017-04-20 20:36:44UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-20 20:36:46UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 967CPM on 2017-04-20 21:46:15UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 120CPM on 2017-04-20 21:52:18UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 113CPM on 2017-04-20 22:20:34UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 133CPM on 2017-04-20 22:33:41UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 217CPM on 2017-04-20 22:37:44UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-20 23:47:38UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-20 23:47:39UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 00:10:44UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 00:10:46UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 103CPM on 2017-04-21 01:37:24UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 105CPM on 2017-04-21 01:39:26UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 04:40:51UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 04:40:53UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 07:46:40UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 07:46:41UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-21 09:29:06UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-21 09:29:07UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 14:09:19UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 14:09:20UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 15:27:39UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 15:27:40UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 17:43:15UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 17:43:16UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 19:11:38UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-21 19:11:40UTC
Mariete in Madrid, Spain read 130CPM on 2017-04-21 23:08:41UTC
Mariete in Madrid, Spain read 130CPM on 2017-04-21 23:08:43UTC
sandi in Prague, Czech Republic read 53CPM on 2017-04-22 01:09:00UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 100CPM on 2017-04-22 04:03:13UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 232CPM on 2017-04-22 04:05:14UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 113CPM on 2017-04-22 04:15:20UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-23 14:19:30UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-23 14:19:32UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-23 14:31:34UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-23 14:31:37UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-23 17:23:17UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-23 17:23:18UTC
Mariete in Madrid, Spain read 120CPM on 2017-04-24 03:22:53UTC
Mariete in Madrid, Spain read 120CPM on 2017-04-24 03:22:55UTC
ray_tracer in Berlin, Germany read 594CPM on 2017-04-24 08:48:03UTC
ray_tracer in Berlin, Germany read 864CPM on 2017-04-24 08:49:03UTC
ray_tracer in Berlin, Germany read 14646CPM on 2017-04-24 08:50:03UTC
ray_tracer in Berlin, Germany read 57498CPM on 2017-04-24 08:51:03UTC
ray_tracer in Berlin, Germany read 57702CPM on 2017-04-24 08:52:03UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-24 11:26:57UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-24 11:26:59UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-24 15:21:56UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-24 15:21:58UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-24 18:49:53UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-24 18:49:55UTC
Kaeltis in Lingenfeld, Germany read 200CPM on 2017-04-24 18:56:48UTC
sandi in Prague, Czech Republic read 50CPM on 2017-04-24 19:47:35UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-25 08:49:31UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-25 08:49:32UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 13:21:41UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 13:21:43UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-25 13:49:50UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-25 13:49:53UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 13:58:53UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 13:58:54UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 17:05:42UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 17:05:43UTC
opengeigerde in Stuttgart, Germany read 21234CPM on 2017-04-25 17:38:58UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 21:12:20UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 21:12:21UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 21:42:28UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-25 21:42:29UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-26 03:21:58UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-26 03:22:00UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-26 03:50:05UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-26 03:50:07UTC
ray_tracer in Berlin, Germany read 1224CPM on 2017-04-26 07:41:04UTC
ray_tracer in Berlin, Germany read 58224CPM on 2017-04-26 07:42:04UTC
ray_tracer in Berlin, Germany read 58350CPM on 2017-04-26 07:43:04UTC
ray_tracer in Berlin, Germany read 448812CPM on 2017-04-26 07:44:04UTC
ray_tracer in Berlin, Germany read 454662CPM on 2017-04-26 07:45:04UTC
ray_tracer in Berlin, Germany read 60990CPM on 2017-04-26 07:46:04UTC
ray_tracer in Berlin, Germany read 58128CPM on 2017-04-26 07:47:04UTC
ray_tracer in Berlin, Germany read 1830CPM on 2017-04-26 07:48:04UTC
ray_tracer in Berlin, Germany read 324372CPM on 2017-04-26 08:23:04UTC
icebox in Northern Minnesota, USA read 623CPM on 2017-04-26 08:48:31UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-26 09:52:39UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-26 09:52:41UTC
Mariete in Madrid, Spain read 364CPM on 2017-04-26 10:40:48UTC
Mariete in Madrid, Spain read 364CPM on 2017-04-26 10:40:49UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-26 11:08:54UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-26 11:08:55UTC
ray_tracer in Berlin, Germany read 516CPM on 2017-04-26 12:01:04UTC
ray_tracer in Berlin, Germany read 546CPM on 2017-04-26 12:02:04UTC
Mariete in Madrid, Spain read 364CPM on 2017-04-26 18:18:42UTC
Mariete in Madrid, Spain read 364CPM on 2017-04-26 18:18:43UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-27 01:05:26UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-27 01:05:27UTC
hardrive9000 in Argentina, Jujuy, San Pedro read 208CPM on 2017-04-27 01:32:05UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-27 07:42:04UTC
Mariete in Madrid, Spain read 110CPM on 2017-04-27 07:42:05UTC
ray_tracer in Berlin, Germany read 3420CPM on 2017-04-27 07:52:05UTC
ray_tracer in Berlin, Germany read 58224CPM on 2017-04-27 07:53:05UTC
ray_tracer in Berlin, Germany read 58410CPM on 2017-04-27 07:54:05UTC
ray_tracer in Berlin, Germany read 447552CPM on 2017-04-27 07:55:05UTC
ray_tracer in Berlin, Germany read 442206CPM on 2017-04-27 07:56:05UTC
ray_tracer in Berlin, Germany read 58410CPM on 2017-04-27 07:57:05UTC
ray_tracer in Berlin, Germany read 57084CPM on 2017-04-27 07:58:05UTC
ray_tracer in Berlin, Germany read 528CPM on 2017-04-27 07:59:05UTC
ray_tracer in Berlin, Germany read 445626CPM on 2017-04-27 09:15:05UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-27 10:56:53UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-27 10:56:54UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-27 17:58:41UTC
Mariete in Madrid, Spain read 100CPM on 2017-04-27 17:58:42UTC
Mariete in Madrid, Spain read 140CPM on 2017-04-27 19:03:57UTC
Mariete in Madrid, Spain read 140CPM on 2017-04-27 19:03:58UTC


Global coincident detections

No global coincidences.

Station coincident detections

No station coincidences.