Online Callbook is an extension for Mozilla Firefox to find QSL information from the HAM radio web sites, such as QRZ.COM, ARRL.ORG, RAC.CA, QRZ.RU, BUCK.COM, and CQHAM.RU using shortcut buttons on the toolbar.
Full Specifications
What's new in version 2.0
General
ReleaseMarch 26, 2013
Date AddedMarch 27, 2013
Version2.0
Operating Systems
Operating SystemsWindows 2000, Windows Vista, Windows 98, Windows Me, Windows, Windows 7, Windows XP