The ILER-40 is a single board 7MHz SSB transceiver kit by Javier Solans Badia, EA3GCY – more details here.
If you’re looking to build a single board QRP SSB transceiver for 40m then buy this and no other…they are brilliant. I found the instructions easy to follow and the kit simple to build and get working. There is also an AGC daughter board (now supplied with the kit) which gives you an ‘S’ meter as a bonus. All you need are a box and the ‘off PCB’ components.
There is now a DDS VFO module available to feed this and other projects you might have on the go.
Javier provides quite a wide variety of kits and parts these days.
All I can say is that this kit worked well for me and both transmit and receive audio is excellent.