John Hackett wrote:
I'm looking for some sort of 'INDICATOR' for 9600bps signals ... (if it's possible).
Hi John,
I have written a 9600 baud soundcard modem called Willow which includes a 9600 baud signal quality bargraph meter and an eye diagram. The bar graph will give you a visual indication of the received signal (including packets, good and bad, and even if only HDLC flags are being received). The eye diagram should look like two superimposed sine waves that are one hundred eighty degrees out of phase.
Willow also has some helpful audio indicators that it will display such as "No audio" or "Too loud" depending on the audio coming into the soundcard.
And, there's a DCD light which will flicker or light up solid yellow based on the signal quality.
It also demodulates the 9600 baud AX.25 packets. :-)
You can download a copy of Willow at
http://quagliana.com/willow/WillowSabins.zip
It's free. (The Sabins program is the AO-51 telemetry program that comes with Willow. It's also free.)
No installation is necessary, just run Willow.EXE and select "File/Activate Soundcard" to get started.
Let me know if you have any questions, and let me know what you think of Willow.
Douglas KA2UPW/5