In reply to G3CWI:
What polarisation do people use on AM?
I’m sure you know, but here goes - History Lesson for the younger generation:
The polarisation for AM used to be horizontal polarisation as the mode was the predecessor of SSB on 2m. I remember working into OH on the mode and later the change over to SSB with the advent of the ubiquitous Liner 2. The calling frequency was on 145.410MHz, if I remember correctly. I used to call SSB stations with my AM rig netted on, often to be told that my carrier suppression had gone haywire. Eventually I persuaded the XYL to let me purchase a Trio TR7010 in 1976 which is still in use today.
Vertical polarisation came in with FM (which quickly became the preferred mode for mobile), largely because the antennae were simpler to mount on the vehicle and didn’t look like something from Mars.
In the case of the Edinburgh AM group, I would imagine that being a local group where signals will be strong between stations, simplicity will be the order of the day and verticals will be used. I could be wrong as it begs the question, where have all those halos gone? Come to that, where have all those Liner 2’s gone?