If you would like to just download the files they are here -

http://hamvoip.org/downloads/callsigns_gsm.tar.gz

It is 10 megs+

This was written minutes ago so it is current as of today.

I would still like to have as many people actually use the script though. I understand that older systems and bash versions may have problems. The BBB and RPi2 images from hamvoip.org work fine/

73 Doug
WA3DSP
http://www.crompton.com/hamradio