It makes a huge improvement.
Even with the aerial down.
Only stand it up when really needed.
It has a 19mm square tube milled down to 17mm.
Then rolled to match the roof.
That tube then fits inside the roof rack rails. And uses the rail bolts to hold it down.
That spreads the load over the length of the roof.
I drilled a whole through the roof rack rail then removed it and drilled into the roof under the rail (10mm whole) so it cant be seen. primed it and painted. Then used a grommet with sikaflex to seal it. passed the cable through and again used sikaflex to seal the cable in the grommet.
When removed you would not know it was there.
I've been checking out antennas etc today and I think I'm going to fit a RFI onglass antenna (ie mobile phone look) to passenger side of the windscreen, you can buy a $100 kit which includes a little unity antenna (about 200mm tall) and a 3dB whip (about 6-700mm tall).
I'll leave the little neat unity on during the week and just unscrew it on weekends and fit the 3dB
Anyone had any problems with the CanBus system when installing the UHF? an installer told me it was very difficult to find suitable "accessory" power in Jeeps because on CanBus.