I have an iPhone 4 that the front screen is shattered that I cant sell, so I decided to turn it into a DVR for my car. I found an app for $4.99 that actually has good quality. I ended up jailbreaking it so I could install tweaks that would start the recording when the car started and went to sleep after it turns off. It records in 10 minute segments, so you can see the 3 second break in recordings in the video.
Also the redline does great with the off axis K band