My question involves traffic court in the State of: Mississippi

I sent both the police and prosecutor letters of discovery (neither replied), I told the judge (the first date or trial because the cop didn't show up), the judge dismissed my right to discovery said "you don't need anything, it's just a radar detector and tuning fork" and granted a new court date to the cop even though he didn't show up. Some court...

On the court date:
Most states require radar detectors to be calibrated in the past 12 months (didn't find anything for my state, anyone know the rules?). The cop stated he used a tuning fork to calibrate it himself, but did not have any documents stating anyone else calibrated it. Judge didn't think he needed documents showing calibration records and took his word for calibration with his turning fork and assumed it was working right (some assumption).

You are not suppose to use radar detectors on hills and curves (gives false readings). Judge didn't know this and so he didn't comment on it.

Here is the most important part. The cop stated he was in such and such parking lot when he used his radar gun (I didn't know where this parking lot is), when I got home I realized this parking lot is about 20 feet before the turn I took onto the road where I pulled over. Basically, this cop was saying I was going 15 MPH over the speed limit, but how can you go 15 MPH over a speed limit yet make a 90 degree left hand turn 30 feet later? This is where the discovery comes into play, if they would of responded than I would of known the cops position and could of told the judge what he is stating (him clocking me at 50 MPH), 30 feet before I made a 90 degree left hand turn? Makes no sense.



How do I go about appealing?
Does it cost money?