Does your cable company require the use of a cable box to watch basic cable channels? The days of analog transmissions, where the cable wire running to the recorder, then from the recorder out to the tv, allowing you to watch one channel, while recording on another are pretty much over, except for perhaps, smaller cable systems that aren't a part of gigantic corporations.
Dazed and confused over high tech.
Sigh...Concrap. The Internet Overlord Cometh
They're not com-tastic!
Sorry for bad english......
In theory, but it depends on some other factors.
Where are you located?
edit: I saw you're located in a PAL country, so you need to be sure the recorder can tune PAL channels at the very least, and whether or not it is digital or analog. If you can get cable from the wall with no box, then assuming you have the right tuner, you should be able to use it the way you want. But again, it can depend.
Your English is actually fine. Better than many Americans posting on the net.