It's confusing if they used the word "integral", which usually means "built in".
BTW, there is an error in the old posts. 26" is a good number for a quarter wavelength at 112 MHz IN AIR. Signals in ideal coax travel at the speed of light, but in coax with real dielectrics it is slower - 0.7c is a good number for RG-58 and RG-400. So a quarter wave of that coax is about 18".