Superantenna is back in business and has quite a few portable antennas available immediately. Here is a video of their new PR2 battery powered rotator along with some discussion on the YP3 portable yagi.
From Dayton Hamvention 2012:
Superantenna PR2 Rotator and YP3 Yagi at Dayton Hamvention - YouTube
From Dayton Hamvention 2012:
Superantenna PR2 Rotator and YP3 Yagi at Dayton Hamvention - YouTube