Liam...
As said above, some kind of estimated coverage map, official or unoffical would be useful as a guide
Not easy to do really because there are so many variables that seem at times to affect range of signal.... aircraft radio type (some are affected when using Scottish Info on 119.875 if also you also have GPS on!!...position of aerial on the aircraft and direction of flight of aircraft in relation to the position of the TX/RX site. Only today I spoke to an aircraft at 1500ft over Oban town where as the other day I could not make contact with a Jodel at 2000ft in the same position!
GASAX.....
Perhaps if FBW could give us the location of the repeater stations we could all make educated guesses about likely coverage?
Without giving the exact locations one is on the NE Moray coast, another on high ground north of Dundee and the other on top of high ground in the Galloway hills.
Maorigh
No problem on 127.275 from off Tobermory to E of Lochinver.
Scottish info on that frequency use a TX/RX site on Tiree which gives better coverage once west of Oban.
What I intend to do though is to and try create and internet page that gives various pieces of information for GA aircraft operating VFR over Scotland. This will give the different Scottish Information sectors and the frequencies that are available.....hopefully I will give area's of known poor reception and any other usefull information that you guys flying over Scotland may need?? I will then create a link to this page through the "Fly On Track" web site.