The goal: Visualise the wireless network links of New Zealand.
The data's available in the Radio Spectrum Management database, available from http://www.rsm.govt.nz/ in MS Access format.
To download the MDB database from RSM, convert the MDB database into a cross-platform SQLite database, and make a CSV file for import into Fusion Tables, run
$ rake point_to_point_links.csv
Then upload to fusion tables with
$ rake update_fusion_tables[{refresh_token}]
where {refresh_token} is a pre-generated token that grants access to your Fusion Tables.
You can browse the map generated at http://wirelessmap.markhansen.co.nz/.
My source code is MIT licenced.
The data in the Radio Spectrum Database is Crown Copyright, sourced from Radio Spectrum Management For copyright terms, see RSM's copyright page.