Autocostruzioni, progetti RF e tecniche digitali by IZ7ATH
IS0GRB - S/W per comunicazioni digitali - S/W for digital HAM communications

Green Bay Professional Packet Radio by N9ZIA

EchoLink
EchoLink gateways by VK2JTP
EchoLink, IRLP e EchoIRLP by IK2XYP
Mappe APRS by IK2ANE
Mappe Uiview per APRS e altri servizi! by I3YPJ
Lezioni di CW on line by IW2CZG

HF-FAX
Slow Scan Television by DL1FH
Swissatv.ch
B.A.T.C. - British Amateur TV Club