iWSPR TX - QRP Hamradio is an iPhone application designed to work in conjunction with a hamradio transmitter for sending low power transmissions using the WSPR protocol. Developed by Federico Romano, this app enables users to probe propagation paths by transmitting signals containing station callsign, maidenhead grid locator, and transmitter power in dBm. The transmissions can be reported on wsprnet.org if received by others, making it a valuable tool for antenna system checks and radio comparisons.

Additionally, the app provides a connection schema for radios equipped with VOX and PTT functions, accessible under the "Help" menu. iWSPR TX - QRP Hamradio offers a practical and enjoyable way to engage in hamradio activities, providing a seamless experience for users interested in WSPR transmissions.