A practical guide to ham radio bands, calling frequencies, emergency centres of activity, APRS, LoRa-APRS, SOTA, POTA, and non-amateur emergency-related channels in IARU Region 1.

An analysis of a portable LiFePO₄ and MPPT-based solar power system for field radio, including power budgeting, energy flow, and seasonal performance considerations.

My attempt to get a Philippine amateur radio call sign during a 58-day stay, including the PARA seminar, NTC exam delays, inter-island travel, and why a temporary guest license may be the better option for visiting hams.