There are two P4 Dragon modems: The DR7800 and the DR7400.
The former is the original one, which is priced about $2,000. The latter is a smaller version which has almost exactly the same functionality, but lacks a couple of features which most users on boats won't miss a bit, and is priced several hundred dollars less.
I have purchased two DR7400 Dragons for clients recently, and have installed and tested one of them already. It works flawlessly. The second one will be installed shortly.
In my limited experience, I'd say the 7400 should receive close scrutiny from any cruiser interested in HF email
. As a part of the overall real cost of the SSB/email installation
, it's just a few hundred dollars more than a P3 modem
and has performance approximately twice as fast.
It's also a very cute little box which can be stashed just about anywhere. Seems to have the usual SCS quality as well. There are at least two versions: the USB version and the Bluetooth version.
Here's the manufacturer's description: