Background radiation in OH3NWQ's study

Measurement station is located upstairs in the study. Radiation is measured as an average of each 10 minute period.

Time is now 30.07.2010 12:39:52z

Last 24 hours:

Graph_24h

Last 7 days:

Graph_7d

Last 30 days:

Graph_30d

Last year:

Graph_0.5y_1

Lisätietoa säteilyannoksista ja annosnopeuksista Säteilyturvakeskuksen sivulta.

Links to inside and outside temperature measurements.

Measured with:

- GEO-210 pancake Geiger-Müller counter probe by K0FF.

- Ludlum Model 177 alarm ratemeter for supplying 900 VDC and conditioning the pulses from the probe to TTL levels.

- Homemade 24 bit counter using a 16F84 attached to the parallel printer port

- Homemade program to read the counter through the parallel port and to feed the rrd database.

© 2007, 2009 OH3NWQ