WSPR_TX_LP1 Transmitter
The WSPR-TX LP1 works on any Ham band from 136kHz to 70MHz and is powered from 5V.
Once you have set up your call-sign it will operate independently indoors or outdoors with minimal requirement of interaction from the user.
There is no need to have it connected to a computer, no need to set the time or to interact with it in any way. The WSPR-RX_LP1 takes care of everything needed automatically for you.