US License Made In Switzerland
Radioamateure der StadtPolizei Zürich, HB9SP
Digital Radio Club Zürichsee,
HB9DC
Union of Swiss Short Wave Amateurs, USKA
American Radio Relay League,
ARRL
ITU Prefix Table
Amateur Radio Maidenhead Grid Square Locator Map by www.levinecentral.com
Converter (US <-> Metric) by www.distance.to
Distance Calculator by www.usa-kulinarisch.de
SWISS AMATEUR RADIO STATION
H B 9 D S Y
