Fortunately, I was apparently wrong about the Axiom data logging portion of the receiver being AWOL. After viewing it's messages from startup in a terminal program (which, oddly enough, is called Terminal and highly recommended for serial port tinkerers), it happily spat out this message:
SiRF Baseline Version: 1.3.1DKIT144 Axiom Variant: k201AX
Feels rather silly, as I'd previously only started the terminal program after the GPS was powered up and transmitting. Oh well, live and learn.
The bad news: The conductor program is still unable to communicate with the Axiom1 protocol (the logger's only interface) but this certainly gives me hope that it's possible. In fact, the documentation makes reference to a specific program (named: DataLogger, again, go figure) that communicates directly with the device to do exactly what I need. Unfortunately, it appears to have disappeared right along with the company that made the unit. So now I'm cooking up a C# program to communicate with the thing. The other bad news? At my level of skill, this could take years.
All that aside, this will save just about every piece of hardware I'd been planning to buy with the exception of a couple of small transceivers. The base station can simply push the log commands directly to the unit and have it send the logs right back over the airwaves. Pretty much as the designers originally intended. The only thing that would make this easier would be the acquisition of the original transceivers and base station hardware/software.
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