I have a RCA ANT121 antenna, do i still need a DTA converter box ?

>I have a RCA ANT121 antenna, do i still need a DTA converter box ?

Yes you need a converter box (or something else like a new recorder or TV with an ATSC tuner built into it)

>I bought RCA ANT 121 ( not HDTV antenna)

All TV antennas are "HDTV antennas", even an unfolded paper clip can be a "HDTV antenna" if the signals are strong enough.

As to whether the RCA ANT 121 is good enough for your location, you will just have to try it and find out. A lot of people in the US found they needed better antennas for digital reception.

Yes, you do.

Yeap since your television is a old analog television, then you would be required to get a digital converter box in order for your old television to continue to work. I would also recommend a strong indoor or outdoor HDTV antenna with your converter box.