Transmission1

Ok I need to drill a hole in my car roof to fit a mount for my dualband antenna. Have found nothing in the way like ribs or wiring under the head lining but now need to purchase a drill bit 16mm dia for the one hole- what would people recommend?
Because it is almost centre of the roof longitudanally should be OK. I know about the getting a good earth bit and cleaning any burrs off the edge of the hole. Any other advice welcome.

16mm seems big.... double check that fella!

SO 239 mount. Will get mount first and then sort out drill when confirmed size.

Oldman54 wrote:SO 239 mount. Will get mount first and then sort out drill when confirmed size.

you have a pm

here you go

If you have this type i think they need a 12mm DV connector hole http://www.thunderpole.co.uk/fixed-body ... t-kit.html

Check u have around 35mm space between head lining and roof .

Thanks Dragonfly that is the mount I intend to use, getting it with mini 8 coax cable from http://www.4x4cb.com/ who are not too far away from me- local enough to arrange a pick up to save on carriage( tight wad that I am).

What about a Cone Drill.

http://www.screwfix.com/p/cone-drill-bit-set/45562

just hammer a six inch nail through it ,but use good heavy lump hammer to get it through with one all mighty smack

stanogs68 wrote:just hammer a six inch nail through it ,but use good heavy lump hammer to get it through with one all mighty smack

pmsl

i use one of these they are excellent
http://www.ebay.co.uk/itm/16-to-60mm-93 ... NEXoFt1hDA


for roof's you might want to consider these
http://www.ebay.co.uk/itm/Q-Max-QMA16M- ... SwbYZXf2Uj

Q-max would be my preference, assuming a very low crown panel as, by the very nature of the way it works, it could locally distort any curved panel.

An ideal way of cutting accurate, clean, holes.

stepped drill bit.. best idea

Place duct tape over the head liner so it doesn't bunch up and rip / shred. I used these drill bits.




73's

When I did this to my Landrover I found the roof panel to be too flexible so added a sheet of aluminium underneath large enough to tuck under the nearest support rib that ran over the roof. This meant sourcing an SO239 mount that had a longer threaded section.