Thanks.. what I'd like to find is some sort of amplifier + suitably small (Ghz) Yagi via which neighbor can beam in my direction; meanwhile will use her n/book for a signal-strength meter, etc.
'Course amplification is two-way; would mean, also -- a suitable coupling from Airport's (no-connector, though) built-in antenna for t'other direction. I can't be alone in needing a small extra spot of Gain. Apparently too, with her add-on firewall ap, neighbor can transceive only to selected MAC-addresses; all others --> dev er, null.
The game's afoot.