Antenna is well installed. All parts are made of proven Komponennten. Pl plug fits.
But technical details are not correct. 4 dB gain are physically a Magnetfußantenn
not possible, not even 1 DB. Is not easy. As already would have a 5/8 Lamda as Imax 2000 or Antron 1/2 Lambda forth to achieve the profit and which are 7 feet or 5.5 feet long.
1000 watts is only once on the antenna, who radioed for CB with 1000 watts ???, then you will probably fuming. 60 watt max.
Length is 56 cm.
But otherwise a good antenna for the car roof.
Regards Your Michael.