Is it possible to stream a few chanels useing one TV CARD and VLC, propably the special equipment is needed.
If it's a DVB card and the 'radio' channel you are tuned to has multiple programs on the one 'multiplex', then yes.
But the tuner can only recieve one 'radio' frequency at a time, so you can only tune to one transmitter. How many programs are on the one transmitter is up to the broadcaster.
I've got a DVB-S card in a PC, tuned to a particular satelite transponder and I'm getting 10 TV channels out of it. This is rather extreme though. Most transponders have less.
My local digital terrestrial stations tend to transmitt a SD channel and a HD on the same frequency. (They are not allowed by law to multichannel here), so you can recieve and record/stream the SD and HD channels at the same time with the one reciever card. You can not simultaniously get another TV station's programs, they are on a different radio frequency, need a 2nd card to tune to the other frequency. (Or a dual tuner card).