I found a guy selling an HF amateur transceiver and power supply: he made me an offer I couldn't refuse!
Problem is, I can't use it yet. I have an antenna picked out... now it's a matter of where to put the antenna, run the cable between it and the radio (and ground it in case of lightning strike), and have an electrician replace the 15 Amp breaker for my office with a 2-pole 45 Amp breaker. If I try to key up a 100 Watt transmitter running from a 30 Amp power supply, the existing breaker will pop every time! Once I have all that worked out, I should be able to communicate with people around the world.
UPDATE: Turns out I can't just have a 45 Amp breaker installed. The amperage of the breaker is determined by the gauge of the wire: so the 15 amp service to the office is probably 14-gauge wiring - where a 45 amp service would require a MUCH thicker 6-gauge wire. He offered to quote me on installing a separate 45 amp branch to that room, with dedicated outlets and all, but that's WAY more trouble than it's worth for this house. If we can't find land for the house we designed, or a new house we like, I might consider it but not right now...