Major reason that the extension result not within Joomla CMS is shown is because the QRZ.COM XML Logbook data (that should be used in extension) is not free (http://www.qrz.com/i/subscriptions.html). Thus the extension should also not be free. In the next release will be possible to choose where to show the result, in new (now default) or in current window.
You can also subscribe to mailing list to get mail notification if new version of the extension is published.
1.5.x versions - Only for Joomla! 1.5.x versions
1.5.2 Aug 2011 - Sign changed to "one line sign"
1.5.0 Dec 2010 - Initial version
1.6.x versions - Only for Joomla! 1.6.x versions
1.6.2 Aug 2011 - Sign changed to "one line sign"
1.6.0 Dec 2010 - Initial version
3.x versions - Only for Joomla! 3.x versions
3.0.0 Dec 2013 - Initial version