800/900 mnz antenas dont care if it is analog or digital, and will probably hanle 1.8. the problem as I recall is getting an adpter from the european connector on the Hirshman splitter to adapt to your connector. It is not too common the ones we see here are usullly TNC or mini UHF. You have to remember to raise the antenna, the cellphone had a power lead to raise the antenna when the radio was off, but the cell was on. I dnt know if you will se a remarkable difference unless you are constantly in marginal areas.