https://www.cemocom.de/tags/pocsag/Recent content in Pocsag on CeMoComHugoen-usTue, 22 Dec 2020 21:36:53 +0000https://www.cemocom.de/2020/12/22/monitoring-pocsag-networks-using-a-sdr/Tue, 22 Dec 2020 21:36:53 +0000https://www.cemocom.de/2020/12/22/monitoring-pocsag-networks-using-a-sdr/<p>This article demonstrates how the POCSAG pager network can be monitored and the transmitted messages can be read.</p> <h2 id="background">Background</h2> <p>The POCSAG protocol used to operate pager networks is already several decades old but still in use. There are multiple networks available world wide operated by commercial network operators. The communication is by default unencrypted so it can be received and understood by anyone.</p> <p>This article shows how a SDR and open source software can be used to receive and display POCSAG messages.</p>