[RTTY] Guess I have been away longer than I thought. +the Signalink USB

[Kok Chen]

> On Sep 30, 2016, at 10:08 AM, Thom Durfee <ki8w at usa.com> wrote:
> 
> I may experiment sometime with a direct FSK keying using a USB port if I can figure out how to do that.  I am so used to having serial com ports but I have not owned a computer that has them for many years.  USB still baffles me somewhat.

Take a look at 

http://www.frontiernet.net/~aflowers/tinyfsk/

http://www.kc4zvw.org/fskit.html

Andy, K0SM/2's TinyFSK is an FSK interface that maintains proper 45.45 baud keying (which you will find is very uncommon among USB based serial ports).  The computer interface is through USB.

Doug, K4DSP's FSKit takes the AFSK output from sound cards and turn them into both an FSK keying signal and a VOX-based PTT keying signal. The computer interface is just plain audio, no serial or USB port needed.

73
Chen, W7AY