Most likely, no modem included. You (most likely) have the same Teton HD + TV antenna that we've been getting from the factory (part of the Converge line), which is their entry-level/base model WITHOUT built in LTE modem (does look like a little AWACS, tho, with the TV antenna on the Teton base).
Nice thing is that you can add a modem: the Teton is LTE-ready, which means you can buy a Category 4 modem (from WifiRanger or most RV outlets or hit the Google) and add it to the Teton itself. You'll also need a data plan from your carrier...
Manual for your antenna is here:
https://wifiranger.com/wp-content/up...TetonHD_v1.pdf Check page 4-5 for LTE activation.
LTE manual is here:
j/https://wifiranger.com/wp-content/uploads/2022/03/WFR-LTE-ACTIVATION-v.5.pdf
Hope this helps.