If you have UBTIX V4, or V5, you can use the WSPR function, ref > http://www.hamskey.com/2018/03/beta-testing-of-stand-alone-wspr.html

But, WSPR need precise transmission synch , UBITX does’t not have GPS or internal clock, Raduino board is just a Arduino … to avoid watching clock and push the PTT every minute:00 , you can use a small ESP32, connected throught WIFI connection, with <time> librarie, got precise and synch time from pool.ntp.org server, then enable a pin for 1 seconde, to enable PTT/transmission on Ubitx, (we will use a optocoupler for isolation).

Download the arduino sketch for ESP32 Wroom Module

Serial output from ESP32

20 meters WSPR report from pskreporter