Radiacode 102
The cheapest way to get a pocket gamma spectrometer with a polished phone app. A great everyday detector for collectors and travellers.
Amazon $249$249
The Radiacode 102 and the Radiacode 103 are evenly matched, rated 3.7 and 3.6. The Radiacode 102 leads on price. The Radiacode 102 costs $70 less ($249 vs $319).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Radiacode 103
The Radiacode for people who mainly want isotope identification in a pocket size. If you just want dose readings, the 102 is enough.
Amazon $319$319
Which should you buy?
- Choose the Radiacode 102 for price ($249 vs $319).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every scintillation and solid-state geiger counter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Radiacode 102 | Radiacode 103 |
|---|---|---|
| Overall rating | 3.7/5 | 3.6/5 |
| Sensitivity 25% | 78 1,800 CPM per µSv/h (Cs-137) | 78 1,800 CPM per µSv/h (Cs-137) |
| Radiation types 20% | 40 gamma, X-ray, beta | 40 gamma, X-ray, beta |
| Dose-rate range 15% | 33 reads up to 1,000 µSv/h | 33 reads up to 1,000 µSv/h |
| Features 15% | 100 data logging, phone or cloud connection, gamma spectrum | 100 data logging, phone or cloud connection, gamma spectrum |
| Price 15% | 49 $249 | 41 $319 |
| Warranty 10% | 67 2-year warranty | 67 2-year warranty |
Specifications
| Radiacode 102 | Radiacode 103 | |
|---|---|---|
| Detection | ||
| Detector | Scintillator | Scintillator |
| Tube or crystal | CsI(Tl) crystal | CsI(Tl) crystal |
| Radiation types | β γ X | β γ X |
| Sensitivity | 1,800 CPM per µSv/h (Cs-137) | 1,800 CPM per µSv/h (Cs-137) |
| Max dose rate | 1,000 µSv/h | 1,000 µSv/h |
| Gamma spectrum | Yes | Yes |
| Energy resolution (662 keV) | 9.5 % | 8.4 % |
| Features | ||
| Data logging | Yes | Yes |
| Connection | Bluetooth | Bluetooth |
| Battery | 1000 mAh rechargeable | 1000 mAh rechargeable |
| Battery life | 200 h | 200 h |
| Build | ||
| Weight | 65 g | 65 g |
| Warranty | 2 years | 2 years |