CVB-C & DVB-T tuning problem

[tizacha]

First of all sorry for my english.

Beginning of the year I bought a KDL-46 EX-720 television.
In this context, I have a question.
I live in Hungary.

Currently, the local cable provider to come in (digital) channels, but there is very expensive the HD channels, so I want to hold the free DVB-T broadcast.

I bought a swich, which can switching between the two antenna signals (2 antenna plug in - 1 antenna plug out), but the problem that if I'm automatically tuned to the cable chanels, I can't add the terrestrial chanels after I switch the item, because I think the cable frequencies are looking for a similar situation, and vice versa.

Oh, the cable come with CA card, so I don"t have Set Top Box, nor want to.

So can anything that is on TV, to be able to tune both signals?

Thanks

Tibor