If it says WINEGARD on it for sure it's an antenna switch of one kind or another for that is what they make
3 (now that I think of it) options
1: The Over the air antenna.... There are a few different OTA antenna power feeds.. ONE uses a "Stand alone" switch. exactly as you described. This feeds a device called a "power inserter" in the coax line from the antenna
2: as I said. Automatic Sat antenna
3: Winegard now makes Rooftop Wi-Fi systems. theyre are a few diffent ones
one is Wi-Fi to Wi-Fi (Re-routes park) and one (Actually there are at least two of one model) can re-route park wi-fi or be a 4GLTE hotspot like my pone
Guesses are presented in preference order by the way.. That last system is fairly new and I do not think it would be standard on any new rig yet.
The others.. Well the OTA antenna is very common.
Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times