Ham radio, that is.
I was getting bored with working only PSK-31 but trying to do SSB here in this RF-noisy area with my old rig, a trusty-but-aging IC-736, was often an exercise in frustration. Then one of my fellow club members upgraded his station and offered me a trade deal on his IC-746PRO that was just too good to pass up. A small amount of cash and a lot of assistance with setting up some large photovoltaic panels and I took it home.
The radio has been installed in my shack and I have been spending the last few days learning how this comparatively complex rig works. Today I played around on 40m and did a head-to-head comparison between the two rigs tuned to the same signal; the difference was astonishing. The software filters on the '46 are amazing and along with the DSP noise reduction make doing SSB phone not only possible but actually enjoyable. I had a long QSO with KE7ZEP, who runs a quarry in Arizona; he does most of his work in the early morning hours this time of year to avoid the heat, then retires to his air conditioned house and plays radio the rest of the day.
I'm looking forward to spending some quality time out in the shack again. It's been a while since I had so much fun on the radio.