If "an LTE data card" means a network adapter that provides Internet access over an LTE mobile phone network, I know of no adapters of that sort that provide anything visible to the host other than a PPP connection; they won't, as far as I know, show you low-level RRC packets. (They might exist, but I don't know of any.)
The airprobe project speaks of "[building] an air-interface analysis tool for the GSM (and possible later 3G) mobile phone standard", but given that they speak of "possible later 3G", they're probably very far from providing anything for LTE.
Some huawei cards, sierrawireles and couple of others dongles have special diagnostic ports that spit out low level messages in proprietary formats. So in theory it's doable with some reverse engineering of those protocols. I'm actually thinking of doing something along those lines one day.
Anyway you'll be better off by googling "swissqual". They have a lite version of their product that's free and works with about 100 handsets and some cards ( they support 3 lte ) You can't save logs but you can view live. I have no association with the company just trying to be helpful
answered 20 Feb '12, 13:33
If you have binary/hex packets and know their type, then you can do it like I do:
BR, HNY Iztok
answered 27 Dec '12, 05:16