Eugene wrote: > > Hello > > I need scheme to control PTT(radio) with Sound Blaster through MPU401 > MIDI port and may be COM and LPT port's. > > Please help > mail to me > > Eugene O Golovko e-mail: [EMAIL PROTECTED] Hello Eugene, what we are using here is a very simple setup that uses the audio AC coming from your speaker output (or line out) to switch a transistor, in my case a BSX21 which then switches the PTT to ground....simple but effective (for 1200 baud that is!!). You can find an example on the home page of the maintainer/author Thomas Sailer at HTTP://www.ife.ee.ethz.ch/~sailer/pcf/ptt_circ/ptt.html Good luck with the experiment Richard
begin:vcard n:Van der Riet;Richard tel;cell:0650268770 tel;fax:070-3867905 tel;work:070-3577447 x-mozilla-html:FALSE url:http://home.worldonline.nl/~richardr adr:;;;Voorburg;ZH;2274;Netherlands version:2.1 email;internet:[EMAIL PROTECTED] note;quoted-printable:Amateur Radio Station PA3GWH=0D=0A=0D=0ARunning S.u.S.E. Linux 6.0 x-mozilla-cpt:;-17824 fn:Richard Van der Riet end:vcard
