Remnants from the unencrypted ghostland

Information is one of the most valuable resources that is slowly becoming encrypted because of security and privacy reasons. Pagers are at first sight archaic devices, but still used for transmitting information very fast. Pager signals are communicating with high frequency radio signals and are not encrypted. By using a RTL-SDR radio dongle, an antenna and a software for reading paging signals, I caught the messages transmitted by fire brigade, hospitals and mobile networks in Arnhem and Utrecht. They can be found at 169.650 MHz and 172.450 MHz. Those messages represent the remnants of a world that is slowly moving to total encryption.