Downloads

PC Software
PC Configuration software for the WSPR -TX Mini, WSPR-TX_LP1 and the WSPR Desktop transmitters

PC Configuration software for the Frequency Calibrator

Windows driver for USB chip CH340.
Usually only needed for Windows XP. Windows Vista, 8.0, 8.1 and 10 have built in driver.
Arduino firmware for WSPR Transmitters
Source code
