Amtor
AMTOR:
I have heard AMTOR on 14069.67 MHz LSB and AMTOR has also been used on 7.042, 7.047, 7.049 and 7.051 MHz.
www.arrl.org/files/file/Technology/tis/info/pdf/69234.pdf
www.electronics-notes.com/articles/ham_radio/digimodes/amtor.php
www.digigrup.org/ccdd/amtor.htm
f1ult.free.fr/DIGIMODES/MULTIPSK/amtor_en.htm
www.wb4hfn.com/Resources/AMTOR.TXT