That said, portables are still a great solution for clubs and the poor folks who own multiple gliders...

Ramy

I disagree about it being a good solution for clubs. The antennas are flimsy and you have to be very careful to re-configure the glider ID when a portable moves between club ships, otherwise, for example, you get an alarm claiming it's a single when all you can see is a Puchacz on that bearing (this draws your attention from other sectors where non-flarm gliders may be approaching)... In club use, the micro-SD card is not as robust (or easy to find in long grass) as a colourful USB stick. The ability to go in through the menus in the Portable (rather than flarmcfg.txt) allows non-technically aware club members to modify things they ought not. For someone with multiple gliders, probably a good choice (I envy them).

The Portable location on the glareshield may require changes to other GPS antennas or compass. It seems that the flarm GPS is very sensitive to other GPS antennas nearby.

Dan