Hi Calum,
That's quite an interesting admission! Would these "tinkerer communities" be the clubs etc. that had their origin in the Weimar republic, and Göring is implying they were all broken up as a result of the "Gleichschaltung"?
I just saw that there was a "communications" branch of the Hitlerjugend, which I hadn't been aware of:
https://de.wikipedia.org/wiki/Nachrichten-HJ
The Wikipedia article confirms that they had nowhere enough members to provide the personnel the Wehrmacht needed, despite membership in the HJ being mandatory, with all other youth organisations being banned.
Regards,
Henning (HoHun)