VFDB e. V. R S of the former Federal Post Office
VFDB e. V. Aachen Branch, Z 32
DARC e. V. H. Q. German Radio Society
DARC e. V. Cologne-Aachen Branch
ADDX e. V. My German SWL/BCL club
Kurzwellenclub Schwalmtal e.V. Local BCL/SWL club
Mailbox DB0ACH My Packet Radio mailbox
ON6DP QSL-Manager list
Radio Nederland Hints for DXer
Uni Paderborn FTP-Server
TU Ilmenau Clubstation DK0TUI
eHAM.net
QSL Info-Search
Bandplan
DL YL Info
VHF-DX Online Database