I recently got an FT-817ND – a great portable low-power (QRP) radio that supports HF, VHF, and UHF.  I coupled this with a buddistick antenna, and in my first ‘fully portable’ outdoor operation on HF, I made a contact!  With 2.5 watts or so, I communicated (in a text mode) with someone in the Canary Islands, from Maine!  This was quite exciting – all of the equipment I used to do this – computer included – fits in a box a bit bigger than a standard briefcase!