Visiting a Friend 19th February 2020 by mw0lgeRoss (GW3NWS) and John (GW8IQC) went to have a QSO with the late Steve Cole (GW4BLE) early in 2020.
7:30 pm - 8:30 pm Cryptography from Ceasar to Quantum: “An introduction to Encryption and Decryption”