Start
Bulletins archief SRS
online Smithchart
circuitSolver
Digisonde Be
Weaver
Homewizard
Web SDR Maasbree
Q100 websdr
Tube data
zendamateur-marktplaats
S punten tabellen
In simpel formule: S IARU = (S Japan+9) : 2
of S Japan = (S IARU x 2) – 9