At 2/20/2007 18:08, you wrote: >Ken, > >I, too, used a Greenlee hole punch before I discovered the Ripley HSK-19 >Antenna Hole Saw. The description in the catalog states: "Ripley hole saw >for installing permanent mount antennas. Makes 3/4" hole and limits depth >to 1/8"..." It is sold by Tessco as catalog number 14023. It's a lot less >cumbersome than the hole punch method, but the user still needs to consider >where the dome light and/or roof support ribs are located, before drilling. >Funny how some people don't check these details!
I'm by no means an expert in mobile installs. In fact, I'm quite a novice in that area & probably always will be. However, I did discover one simple trick for locating the correct spot to drill the mounting hole: Remove the dome light & locate the spot to drill from the bottom, through the dome light area so you know where you can put the hole & have room for the coax. Then center-punch the spot from the bottom, making a raised dimple in the rooftop. Then take the punch to the rooftop, center it on the dimple & punch again, inverting the dimple so you can then drill your mounting hole from the top. Also be careful to use either a quality hole saw, or one that's undersized by 1/16 in. The first 3/4 in. saw I used had a bit of wobble in it & almost made the hole too big for the rooftop NMO mount. Boy would that have been embarrassing if the hole really had been too big & the mount slipped through! Bob NO6B
