I have my caravan on a seasonal pitch.my network is vodafone and I can run tv apps from my phone to the tv. but the signal strength is a bit flakey and during the day 4/5 g doesn't always provide a good connection for the Internet.so I'm hoping if I upgrade to a 4g/wifi system and mount the antenna maybe 4 to 5 feet above the van roof i should get good results..but people say it will only be as good as the signal!Could you provide a bit more detail on what your usage and expectations of these would be, please?