Is there a was to turn off the Curve's radio frequency and still be able to receive/send texts and calls? The radio frequency is constantly colliding with my stereo's frequency and the noise just gets annoying. Please advise!

nope

That's the (accurate) short version.

The long version: That sound you hear is frequently referred to as the Mosquito, the radio transmissions which interfere with poorly shielded speakers. The only thing you can do is move the BB further away from the speakers.

There are also sweet spots at varying distances where it will not be audible. I assume these distances correspond to the wavelength of the transmissions

Or you could buy a better set of shielded speakers, or switch to a CDMA device. All GSM devices do this. I had a old Motorola that did this as well, and the first time I heard it it startled me too. Now I'm just used to it when it happens, and I usually don't have my BB Close to the speakers.

Phones that have EVDO also do this, it's because of the frequency that the devices run on. The nextel models are really offensive though, mine could mess up computer speakers from 6-8 feet away easily at times, pretty funny how often it freaked out customers...

Kinda makes you think about holding it to your head for a long period of time when you see what it can do with small windings of wire.

my cdma device makes my screen go wacky

Wirelessly posted (BlackBerry8320/4.2.2 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/100)

Both CDMA and GSM cause the issue.

Sorry, but I'm sitting her chuckling at the original post. Kinda reminds me of years ago when I was working nights as control room operator at the local tv station. One night our transmitter totally died, and the backup transmitter wouldn't come online, leaving us totally dark and off the air. An irate woman called the station, and since it was after hours, I was the only one there, I answered - to be yelled at and chewed out because her screen had gone black. I patiently tried to explain that our transmitter had gone off the air, and we were doing our best to get it back on the air as soon as possible. To this she responded, still in her irate tone of voice, "well if you're off the air the LEAST you could do would be to put a message on my screen so I'd know!!!

Gee, just how do you reply to that? I almost said, "well lady, I opened the back door and yelled as loud as I could!" But I decided it was probably easier to just say "I'll do my best to have a picture on your screen again as soon as possible, thanks" and hang up quickly.

To the original poster - the only way cell phones communicate is through the radio. If you shut it off - just how do you think you're going to place/receive calls and text messages, anyway?

I remember having one of the FIRST Nextel PTT phones. Used to be, I could pull the antenna out, put it near or touching a CRT monitor, hit the PTT button and shut the monitor DOWN. Never knew how it did that. Figured it was some burst of EMF that was whacking the CRT. This was before I had kids and I kept the phone on my hip. My kids seem normal... for the most part...