Alan,?
WSPR Transmit only.? My idea is to get the QDX to transmit WSPR on a frequency and at a time determined by a microcontroller rather than a computer. This would allow the automation of a multi band beacon without tying up a computer.?
My “rough” design is to use a rasberry pi Pico with an I2C real time clock. The software would have a hard coded WSPR string (as shown by Andy Talbot and others) ?and a Kenwood TS480 CAT protocol emulator. The Pico would send a message to the QDX using the CAT protocol at a time, duration and ?frequency defined in the code which will use the RTC for timing purposes.?
What I don’t know is if the Pico can use its USB interface for serial port communications with the QDX A raspberry pi Zero might be a better option.
Using a microcontroller would offer the possibility of switching an appropriate aerial matching circuit as well.?
I’m starting to learn Micropython and thought this might be a suitable starter project.?
Er, that’s it,?
Steve?
