Great information. However, the ham that contacted me has asked me to not give him any more information as he only wants to do it his way or nothing apparently. You would think that you would have a ham who would be greatly interested in digital comx, especially for HF since the distances he wants to cover do not seem very practical to me on VHF. But he only wants to believe he is doing analog and specially doesn't want digital stuff.
Rick Mark Miller wrote: >>The individual wanting to do this, is primarily interested in running two >>bands (e.g., 2 meters/440) with full duplex. >> >> > >Well if it was absolutely necessary to use telephone fax machines, then at >the originating end you would need a device that supplies -48 volts to the >fax machine telephone interface, and can sense when the originating fax >machine goes off hook. This device would then key the transmitter. At the >answering end, a device would have to sense when the receiver breaks >squelch and would have to provide the 20 Hz ring signal to the answering >fax machine, sense off-hook, and key the transmitter.. When the fax is >completed the originating end would go on-hook and the originating device >would have to de-key the transmitter. At the answering end, the device >would sense squelch, go on-hook and de-key the transmitter. > >A start would be the device like http://www.jkaudio.com/tap-1.htm with the >addition of the transmitter and receiver control circuitry. A good article >on telephone interfacing is at >http://www.tkk.fi/Misc/Electronics/circuits/teleinterface.html#audioint > >This sounds like an interesting project, however there are programs set up >to send high quality digital images, ie WinDRM, HamPal, and DigTRX. > >73, > >Mark N5RFX > > > > >Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org > >Other areas of interest: > >The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ >DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) > > >Yahoo! Groups Links > > > > > > > > > > Need a Digital mode QSO? Connect to Telnet://cluster.dynalias.org Other areas of interest: The MixW Reflector : http://groups.yahoo.com/group/themixwgroup/ DigiPol: http://groups.yahoo.com/group/Digipol (band plan policy discussion) Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/digitalradio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
