Petitcom 3 QPSK Modulator http://www.geocities.jp/obono_kun/storage/petitcom_util/ptcm3_qpsk.html 麗の小屋 - Phono Transceiver PetitModem - http://rei.to/petitmodem.html P/SEND2 - myu314.org/studyroom:product http://myu314.org/studyroom/product/pisend2/ ぷっちコンバーター3号 http://tokui55.com/post-62