Ok so I gave a DIY BT antenna design another shot. This one actually worked well, producing a solid connection/signal to my Magic Mouse.
Close up of individual pieces.
I constructed this version from pieces of earlier attempts. Anyhow, once you get everything firmly pushed into the port, signal was consistent. In previous attempts, I would get signal but it would be intermittent making the MMouse skip which was really unusable (and very annoying). Anyhow, give this design a shot. It is comprised of
1 spring (about 5mm wide x 3.5cm long)
1 paperclip (regular size lol? - the width of the wire at its end is 1mm)
1 coil of solid core, uninsulated wire. (I just coiled it tightly around the paperclip so it would fit snugly in the interior port)
From your PMG5's BT port, you can see how there is a brass/metal ring that has a central gap and an outer gap. It is important that the paperclip and wire coil fit snugly and go all the way into the interior port. Once that is firmly in place, bring the spring forward, fitting into that outer ring.
Voila, a DIY, hillbilly BT antenna.
