[amsat-bb] Signalink Modification for 9600 baud

christy hunter cchunter3 at mindspring.com
Wed Oct 11 21:55:00 UTC 2017

based on discussion with a technician at Tigertronics, the USB signalink 
will not allow 9600 baud packet due to the frequency response is too 
narrow. He said none of the commercial external soundcards will work 
with 9600 bd packet. The only option is to construct a circuit, or use a 
9600 baud TNC. (not too many options on that front.)

the Tigertronics website is a bit miss-leading because it ref. 9600 baud 
on its wiring diagram. Mine is setup for the 6pin miniDin connector(the 
pin 4 - for 9600 bd on my radio dataport- is not connected) for my FT 
847.  At this time I can only decode by connecting the 9600 pin on my 
radio (dataport) to a line-in to my Laptop soundcard (and not using a 
isolation circuit).

It would be nice to hear of any solution to this, without buying a $400 
TNC (kantronics 9612).

there are several websites that talk to this issue, here is one of them


Christy KB6LTY

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