Analog Geiger Counters are useful for detecting radioactivity and performing nuclear experiments. The models GCK-01 and GCK-02 are offered as kits as well as assembled. The assembled and tested geiger counters have the "A" suffix. These Geiger Counters primary indicators are an audio click and an LED blink each time a radioactive particle is detected. Count Rate VS Dose Rate chart on front of counter provides an indication of radiation based on clicks per second.

The Model GCK-02 has an internal Geiger-Mueller tube. The model GCK-01 has an external wand that houses Geiger-Mueller tube (GMT-01) and provides a easy to use probe for checking radioactivity. The GM Tube is a Ne + Halogen filled, with a .38” effective diameter 1.5-2.0 mg/cm2 mica end window.

• Detects alpha above 3.0 MeV.
• Detects beta above 50 KeV.
• Detects gamma above 7 KeV.

The CGK-01 and GCK-02 Geiger Counters have the following features:

Headphone / Analog Meter Jack
Digital Output -- Provides a TTL logic pulse each time a radioactive particle is detected. Used to connected to various digital adapters:

Digital Meter Adapter -- Turns our analog into a accurate digital geiger counter

External Power Jack

Geiger Counter Kit GCK-01 & CGK-02 includes:

• Printed Circuit Board (PCB-06)
• Printed and drilled enclosure case
• Assembled Wand (* GCK-01 ONLY)
• GM Tube (* GCK-02 ONLY)
• All electronic components

Case Size 5.6" x 3.2" x 1.5" .PDF Drawing (50K)

Optional Belt Clip

**GM Tube shown on webpage may be substitued with a glass or metal tube sensitive to only beta and gamma radiation.

Analog Geiger Counters are useful for detecting radioactivity and performing nuclear experiments. The models GCK-05 and GCK-06 are ready to build kits. These Geiger Counters primary indicators are an audio click and an LED blink each time a radioactive particle is detected.

The Model GCK-06 has an analog meter. The Geiger-Mueller tube (GMT-01), included in the kit, is a Ne + Halogen filled, with a .38” effective diameter 1.5-2.0 mg/cm2 mica end window.

The Geiger Counter kits GCK-05 and GCK-06 detects the following radiation.

• Detects alpha above 3.0 MeV.
• Detects beta above 50 KeV.
• Detects gamma above 7 KeV.

The CGK-05 and GCK-06 Geiger Counters have the following features:

Headphone / Analog Meter Jack
Digital Output -- Provides a TTL logic pulse each time a radioactive particle is detected. Used to connected to various digital adapters:

Digital Meter Adapter -- Turns our analog into a accurate digital geiger counter

External Power Jack

Geiger Counter Kit GCK-01 & CGK-02 includes:

• Printed Circuit Board
• GM Tube
• All electronic components

Case Size 5.6" x 3.2" x 1.5" .PDF Drawing (50K)

*Depending on availability, the GM tube may be subsititued in the analog, analog meter and kit Geiger Counters, causing them be sensitive to only beta and gamma radiation.

The New Digital Meter Adapter is now a universal expansion module. It is a combination of the original Digital Meter Adapter, RS 232 interface adapter & Random Number Generator Adapter. The new DMAD has all three functionalities in one module to enhance the capabilities of Geiger Counters.

Countable Pulse Resolution & Range         1 Count Per Minute (CPM) - 9,360 Counts Per Second (CPS)
Radiation Resolution & Range                   1.0 uR/hr - 655 mR/hr
          (Metric)                                       .01 uSv/hr - 6.5 mSv/hr

LCD Display 16 character by 2 line LCD (liquid crystal display) with back light provides easy to read output.

May be Purchased as a kit or assembled and tested

More Information

Digital Meter Adapter Construction Article

The Radiation Meter may be incorporated into a standard analog geiger counter to provide a visual readout of the approximate radiation level.

Click here to see schematic.

Complete unit plugs into the headphone jack using a 3.5mm plug. Compatible with the GCK-01 and GCK-02 geiger counters.