Hello the TX136/500 builders,
WSPR is a very interesting mode for 2200 and 630 meters bands.
So thanks to the K1JT WSPR source code, the G4JNT algorithm description and the W3PM source code examples,
it has been relatively easy to add the WSPR modes in the TX136/500 software.
The result of this work is a new unofficial version 1.06a which changes :
- added WSPR-2 and WSPR-15 modes (standard WSPR messages only : callsign + 4 digit locator + dBm)
- added WSPR timer calibration in the service mode menu (an accurate timer is mandatory in WSPR mode)
- added optional GPS NMEA ($GPGGA) RS232 serial input for perfect synchronization.
The TX136/500 remains a stand-alone device, the PC is used just to program the WSPR parameters.
Having no TX500 this software has been validated on TX136.
The GPS synchronization has been tested with an Adafruit GPS module with serial TTL-RS232 converter.
For the ones who will try it, thanks in advance for your feedback.
73, Patrick F4GCB