Buy the Kit

Note:If the Paypal Buttons have stopped working, you can email me and tell me what you want and if you are out of the US. Then I will email you a request through Paypal.

Terms and Conditions:

Domestic (US) Shipping:

A flat rate of $4.50 for US shipping is applied to all orders at checkout. Kits are shipped USPS 1st Class (Economy).

International Shipping: PLEASE NOTE!

Starting July 1, 2021, shipping to the EU will be more complex due to the requirement to collect VAT (Value Added Tax) on shipments to the EU. It is suggested that I collect the VAT at the point of purchase and send the money to the associated government VAT authorities. I WILL NOT DO THIS. So paying VAT (as well as duty) is YOUR RESPONSIBILITY. I WILL NOT BE RESPONSIBLE FOR DELIVERY FAILURES DUE TO VAT / DUTY COLLECTION.

In addition, I will need to declare the EXACT VALUE of the items on the customs declaration.

Restrictions in the UK are even more arduous and because of this I WILL NO LONGER BE SHIPPING TO THE UK UNTIL FURTHER NOTICE. I regret have to do this but it's just too much for me to deal with at this time.

A flat rate of $18.00 for international shipping is applied to all orders at checkout. (My cost is sometimes more.) Kits are shipped USPS 1st Class (Economy).

Shipping time for international is usually about 3 weeks, but some countries will take longer.

Economy shipping does not provide a tracking number for overseas orders. However the Customs # will often provide reasonable tracking for many countries.)

Tariffs, customs duties and other fees are the responsibility of the buyer.

I am unable to ship to certain countries. I will notify you if this is the case.

Ordering:

To order, select the type of kit from the drop-down and click the "Add to Cart" button. A PayPal shopping cart will open, there you can; change quantities, remove items, or continue shopping.

Use the Continue shopping > link to add more items. When you are finished with your cart, checkout with PayPal using either button. If you don't have a PayPal account they will take your charge card. Just follow the prompts. Shipping is added during the final checkout.

Please note: the address you fill out in PayPal is the address your kit will be shipped to. Please make sure your address is correct.


Pricing:

Recently, chip shortages and other factors have led to a substantial increase in the cost of many of the key parts in the kits. Therefore I had to raise prices on severial of the kits. I was sorry to have to do that.


Please Note:

Since these are unassembled kits, I can not accept returns on kits you started to build. On most kits all parts are through-hole, however some have a few easy surface mount components, In general, assembly requires good soldering skills. I do not recommend these kits for those not familiar with soldering PCB boards, or those who don't expect to read the assembly instructions. Please read the Overview for the kit you plan to purchase so you know what you should expect.

Uranium Ore samples:
I am beginning to sell my collection of uranium ore samples. I need to catalogue what I have, but please contact me if you are interested. (see Contact page) They will be low enough in activity to ship legally, but I will only ship in the US.

Geiger Kit - GK-B5:

$44.00

The current availability for this item is - OUT OF STOCK due to chip shortage.

See the GK-B5 page for a description of this kit..

  • The kit includes all parts needed to build out the board, remote, and blue/white LCD.

  • A GM tube is not included.

  • A case, power source, and buttons and switches are not provided.

  • A USB to serial adapter is needed if you want to interface the kit with a PC.

If you plan on running the kit with a 3.7V LiPo, consider the Pololu step-up / step-down regulator below

Geiger Kit - GK-Mini:

$38.00

The current availability for this item is - In Stock

  • The kit includes all parts needed to build out the board, remote, and blue/white LCD.

  • A GM tube is not included.

  • A case, power source, and buttons and switches are not provided.

  • A USB to serial adapter is needed if you want to interface the kit with a PC.

Geiger Kit - Plus: (discontinued)


Pololu Voltage Reg:

$12.00

The current availability for this item is - In Stock

This is an optional Step-up/Step-Down voltage regulator for the GK-B5 and GK-Plus Geiger kits. Installation is described in the Build Instructions.

It allows an input voltage from 2.7-11.8 volts and outputs a fixed 5V with great efficiency. This gives you a lot of flexibility for a power source such as a LiPo for instance.

You can order this part directly from Pololu as they have other great stuff. It's just carried here as a convenience. Note [11/11/21]: Pololu has substantially increased the price on these recently. You may be able find an eBay substitute, however I will only support this model.

This item is only available along with one of the Geiger kits above.

RadMon (basic):

$44.00

The current availability for this item is - In Stock

See the GK-RadMon page for a description of this kit..

  • The kit includes the ESP8266, carrier board, and all parts needed to build out the board.

  • Temperature / humidity sensors, GM tube, battery, case, and solar components are not supplied.

  • The OLED is now included with the kit. (It was sold separately as an option.).

  • A USB to Serial adapter is needed to program this kit

RadMon - Plus:

$49.00

Please note: This kit requires that you are able to upload your modified sketch to the ESP8266 with the Arduino IDE after you add your network and site credentials. Step by step instructions are provided for this, however this kit is not recommended for those with no programming experience.

The current availability for this item is - IN STOCK

See the GK-RadMon page for a description of this kit..

  • The kit includes all parts needed to build out the board including the OLED.

  • The software is pre-loaded on the ESP8266.

  • The BME280 weather sensor, GM tube, battery, case, and solar components are not supplied.

Please note: This kit is setup using your phone or tablet on your local WiFi network. It does not require any programming ability. Although it is in use in many locations, it is a relatively new design. Therefore I am being cautious and prefer that international customers have familiarity with the Arduino IDE.

GK-WiFi Kit:

$19.00

The current availability for this item is - In Stock

(Occasionally an assembled kit is available. Click here for more information.)

See the Add-on Logging Kits page for a description of this kit..

To use the GK-WiFi kit you must . . .

  • Be able to use the Arduino IDE with the ESP8266 add-on to upload a sketch to the ESP8266

  • Have basic soldering and assembly skills

Please note: This kit requires that you are able to upload your modified sketch to the ESP8266 with the Arduino IDE after you add your network and site credentials. Step by step instructions are provided for this, however this kit is not recommended for those with no programming experience.

RD003 Geiger Tube

OUT OF STOCK

Sorry - OUT OF STOCK

The small quantity of SBM-20 GM tubes are unfortunately gone. Given the calamity in the Ukraine, I'm not sure when I will carry them again.

I have a few RD003 GM tubes which are NOS in a box with data sheet. Frankly, I have little experience with these myself. My impression is that they are somewhat less sensitive then the SBM-20 however the specifications indicate they are more sensitive. Physically, they are shorter and thinner than the SBM-20 and have thin wires welded on both terminals.

Note that GM tubes are only available along with one of the Geiger kits above and quantity is limited to one.


Technical characteristics.

Voltage of start of counting 340 V
Plateau length 360 V - 440 V
Maximum Plateau Slope 12.5% / 100 V
Operating Temperature Range - 40 to + 60 0C
Gamma Sensitivity 42 cps/mR/hr
Maximal anode voltage 550 V
Dead time 75 μs
Operating Voltage 400 V
Life at least 5*109 pulses


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