Yes, the food and water supply of the base is maintained by both trade, hunting and foraging. There will probably be traders from elsewhere coming in either later this day or tomorrow. The cold weather might be a problem, though. Good thing you still have those heated clothing and batteries, or your mutations would be a bother.
The base’s radio scanner is not as advanced as TL 8, it’s probably a TL 7 or late TL 6 model. Getting such hardware would be very difficult, unless the leadership of Gunmetal decide to help you out. And then, it’d be expensive as all get-out.
Contacting Gunmetal and trying to see if they want to sell you something that high tech would require a Reaction Roll, at a basic -4. (Other reaction modifiers apply.)