PDRM82 Modification - help

[pdxgeigerdude001]

hallo.. hoping some English speakers on the forum can help?  Does anyone have instructions on how to modify a PDRM82 to upgrade the geiger tube and install sound?  Somebody on youtube linked to this forum but I can find no instructions.  Thank you  Danke shoen

[wrdmstr inc.]

welcome...look here:

https://www.geigerzaehlerforum.de/index.php/topic,88.0.html
or

https://www.geigerzaehlerforum.de/index.php/topic,326.0.html

[pdxgeigerdude001]

thank you for the links. I will read them and hopefully get what I was looking for.