Homebrew 80/40m SSB/CW Rig - #5 VFO/BFO and BPFs

Video looking at the VFO/BFO using an Arduino Pro Mini, Si5351 and 16x2 LCD (keeping it nice and simple). The BPFs are based on the generic design out of SSDRA, combined with a 30-300pF variable capacitor to facilitate tuning/peaking across the two bands. This time I have elected to use two plug in filter modules, one for 80m and one for 40m.