According to this page on the Tigertronics website you can’t do FSK with the Signalink.
Of course you can, you just have to be a little creative…
Use the Signalink for RX and make this interface from Don AA5AU’s site for keying your transceiver.
It takes only a few euros and a few minutes of work for the hardware.
Configure MMTTY for transmitting FSK through your serial port et voilà!
Image may be NSFW.Clik here to view.
