I was not following that order, so maybe that's why I didn't get good results! I'm going to re-calibrate my station tonight, I hope that there will be a few listeners at 4am bothered by those "strange beeps"
This post should be sticky and the same text should be on the FM calibration window and on the help pages on this website!
Ok, I've managed to calibrate my station thanks to eldoradofm. I must admit that I was not following the above procedure, so that's why I was geting overshoots really often and I had that strange phase diff between stereo pilot and rds signal.
This is how I've calibrated my transmitter. This is another proof that everybody using ST for FM purposes, MUST calibrate.
And this is how is pira75 measuring all the above on Top40/Dance music (I'm using an MPX STL by the way).
All the above were made totaly remotly. I'm using pira's excellent remotecom software. My pira75 is located in the studio and I'm doing all the work from home, wearing pyjamas
Although I'm really happy about all the above I've got some questions:
1) When I was ticking the boxes at the first step, at the tones of 23Khz till 53Khz, nothing happened when messing with the sliders. I was constantly geting 75khz modulation no matter what. So I left them on 1.00
2) At the last tone of the 57Khz, no matter what the slider's position was, I was getting 25Khz of modulation.
3) from time to time (like every 10mins) there is a phase diff of -20deg appearing instantly. Pira75 bug? Or my calibration needs fine tuning? Dunno
I'd like to thank once again eldoradofm for his step-by-step guide.
Remember: ALWAYS calibrate your ST for your specific transmitter. DO NOT SKIP ANY STEPS. And if you are on the broadcast business, get your self a pira broadcast analyzer.
btw, I'm using beta079