Dr. Jack Purdum, W8TEE, licensed since 1954, is a prolific author of at least 17 books on computer programming languages and microprocessor projects for amateur radio and is now the Microcontroller Editor at CQ Magazine. This episode is part of my series of interviews to introduce you to QSO Today Virtual Ham Expo Speakers. Jack and Al Peters, AC8GY, are now prolific creators of Arduino projects and gave a presentation last August 2021 on building an HF SSB/CW software defined transceiver, called the T41. W8TEE is my QSO Today.