Hi,
I finally published the code and details on how to modify the original QRSS kit by Hans and Steve into a WSPR beacon.
I had to chase a bug which is not directly related to my production code, so it was hard to solve it.
Everything is here on my blog, in french. The schematics and code comments are in english. The automatic translation will give you enough details to have the big picture on how to implement this mod and use the code.
All the parts are easy to find and buy and you have access to the full code for free.
However, if you are afraid of soldering I will soon offer a semi-kit for this, expected around 20USD (I hope less depending on shipping/taxes).
The kit will use a full LaunchPad board with USB port, so you will be able to reprogram it in order to generate any signal form you want.
Adding more resolution to the DAC (the R-2R ladder) will allow Hellschreiber or softer "keying form"...
Don't mind in asking through the blog comments if you need more details on how to implement it.
I am also waiting parts to build a prototype of a "Agile QRSS transmitter" based on a AD9850 DDS.
They are now cheap and easy to play with using an Arduino or a LaunchPad.
But more on this later on my blog...
73,
Yan.
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Yannick DEVOS - XV4Y
