I have posted the Stelma TDA-2 TTY analyzer manual (11 MB pdf) at http://www.navy-radio.com/manuals/stelma-tda2.pdf I believe the TDA-2 is equivalent to the military TS-1060/GG and TS-917A/GG My TTY test gear page is at http://www.navy-radio.com/rtty-misc.htm cheers, Nick K4NYW