Hi All, with the receiver WSPR 14 MHz and the WSPR-TX_LP1 both on 14 MHZ , i have build a tranceiver ! A little interface, some leds, switch, pigtails, ICs and relay 5V . The TX info : pin 9 on the WSPR-TX_LP1 board. When TX, a little relay 5V cut the Vcc to SA612A and LM386 in the receiver box WSPR. Some pictures . //Happy WSPR\\ 73 Bernard de on7an