The Beach 40 is a double-sideband supressed-carrier transceiver for the 40m phone band. Originally designed by Vk3YE, I’m currently constructing my own with a few modifications, namely using an LC VFO instead of a ceramic-resonator VXO.
For construction and troubleshooting details, see:
Part 1 – VFO
Part 2 – Diode Ring Mixer
Part 3 – Audio Amplifier
Part 4 – Low Pass Filter
Part 5 – Mic Amp
Part 6 – T/R Relay
Schematics