On the softrock40 mailing list, somebody mentioned the 2N2/6 Transverter, which is a 6m transverter for use with a 40m transceiver. It’s not completely trivial, but it’s not hideously complex either. I’m becoming more interested in 6m, so it seems like archiving this for my later consumption might be useful. My FT-817 already is a QRP rig on 6m, but it might be neat to combine this with an HF software defined radio.