This project is based around the recent HF1 QRP transceiver by Ashhar Farhan, VU2ESE. The transceiver is an interesting SSB design with wide tuning range from 0-30MHz and should cover several amateur bands. The schematic for the transceiver can be found on the Minima mail list in this post with a PDF attachment.
After a front end 0-30MHz filter, the transceiver uses a 45 MHz first IF and a 10 MHz second IF. The famous bi directional amplifiers are used in the bi directional SSB sections of the radio.https://vk3yy.wordpress.com/2016/05/28/hf1-qrp-transceiver-project/