Quote:Every system I ever set up or swept had a tilt (around 5dB on a 450 MHz system on up to 10dB, 12dB or more on an 860MHz sytem) on the feeder. This was needed back in the 'all analog' day to ensure that adjacent channels ended up within a dB or 2 of each other. As I recall there was also an FCC spec that said peak to valley at the groundblock needed to be less than 5 or 6dB. In fact I've worked with designs that required equalizers near the end of line to attenuate the low channels to keep a positive slope at the taps, so I'd say flat out of the tap is not 'normal'.
forward levels would wind being flat out of the tap in a normal system