T3C - Propagation modes: sporadic E, meteor scatter, auroral propagation, tropospheric ducting, F region skip, Line of sight and radio horizon. 41:38

As seen at Hamvention 2025. Neil Rapp, WB9VPG Amateur of The Year. ARRL reader, Pi-Apps, FM Radio Kit, Cheap Emergency Strobe Build and much more. 1:22:57

T3B - Electromagnetic wave properties: wavelength vs frequency, nature and velocity of electromagnetic waves, relationship of wavelength and frequency; Electromagnetic spectrum definitions: UHF, VHF, HF. 52:25

A visit to Bletchley Park, Tommy's continuing Meshtastic Adventures part 2, DIY 50 Amp power supply, and more on Hamsci's MW eclipse studies. 1:15:48

T3A – Radio wave characteristics: how a radio signal travels, fading, multipath, polarization, wavelength vs absorption, Antenna orientation. 1:06:38

Meshtastic, an open source, off-grid, decentralized, mesh network built to run on affordable, low-power devices. An update on the latest scanner technology. More… 1:03:43

restrictions during emergencies, use of phonetics in message handling. 40:30

A review of emergency power sources. W5SLA Winter Field Day activities. Icom’s new small business radio package. A highly effective noise blanker. Canarduino Christmas goodies arrived. More… 1:18:29

T2B – VHF/UHF operating practices: FM repeater, simplex, reverse splits, Access tones: CTCSS, DTMF, DMR operation, Resolving operational problems, Q signals. 59:17

DIY 12 Volt Lithium Battery Packs. FNIRSI LCR-P1 component tester. Raspberry Pi 5B SSD Speed Demon. 1:26:27

T2A – Station operation: choosing an operating frequency, calling another station, test transmissions; Band plans: calling frequencies, repeater offsets. 52:42