What cool stuff is going on with IP over ham radio? I want to build simple services accessible to other hams in my area, and would love to learn about what's out there.
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New Packet Radio: This looks pretty cool, although until the FCC makes a decision on updated VHF/UHF bandwidth and symbol rate restrictions, I'll hold off on buying any dedicated hardware
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Broadband HamNet: I'm not sure if there's any existing network in my area. Since it's 802.11 with yagis and amplifiers, I feel like you'd need a good density of local users for anything cool to develop.
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AX.25 with TCP/IP: I might play around with this. It doesn't require equipment except a UHF/VHF radio, antenna, and a computer, so it might be easier to convince others to try it too. Obviously you're very limited in bitrate, but it would be fun to set up a gohper hole or a BBS.
Are there other technologies or projects worth looking into? Even though I'm not personally interested in buying new equipment for it, I'd still like to hear what's out there.
In the the Puget Sound area, there is HamWAN. It's a high speed 5.8GHz network that uses Mikrotik WiFi radios connected to high gain antennas. Make sure you get the international version, the US version will not work on the frequencies used by HamWAN.