Welcome to Mwmbl! Feel free to submit a site to crawl. Please read the guidelines before editing results.
To contribute to the index you can get our Firefox Extension here. For recent crawling activity see stats.
-
https://en.wikipedia.org/wiki/History_of_mobile_phones — found via Wikipedia
History of mobile phones
available channels in urban areas. As calls were transmitted as unencrypted analog signals, anyone with radio equipment that could receive those frequencies