HF Propagation predictions

February 11, 2024 Julian OH8STN 2

An amateur radio operator explores how detailed weather data could predict HF band openings, leveraging temperature, pressure, and historical contact information while considering the impact of cold on equipment conductivity.

Keeping the Ham Shack & my Lithium batteries warm in winter

January 25, 2024 Julian OH8STN 0

To protect lithium batteries from cold while charging, a video/blog showcases using a Chinese diesel heater in an off-grid ham shack. It’s vital to keep batteries above freezing, a lesson learned from electric cars in winter. The video details the installation and operation of a 3kw Vevor diesel heater, which also powers up using the ham shack’s LiFePO4 batteries, maintaining ideal temperatures for both batteries and equipment.

Retevis Ailunce HD1 GPS First impression

January 21, 2024 Julian OH8STN 5

The Retevis Ailunce HD1 GPS, rated IP67 for dust and water resistance, surpassed expectations in extreme weather testing at -30°C, showing no signs of battery, LCD, or condensation issues after being left outside for three days. The robust HD1 performed admirably, suggesting it’s a serious contender in rugged radio options.

New TX-500MP HF Man Pack from Lab599?

January 16, 2024 Julian OH8STN 2

Lab599 teases a new portable ham radio, the TX-500MP (Man Pack), responding to feedback for improved wire management and a more backpack-friendly design. Updates will follow as more information becomes available.

Benefits of adding parallel batteries in an off-grid system

December 29, 2023 Julian OH8STN 1

This tutorial demonstrates how to connect two 12-volt batteries in parallel using Power Queen 12.8V, 100Ah, 1280Wh lithium iron phosphate batteries. The provided YouTube link offers a detailed guide. For related content, explore building a solar-powered Off-Grid Ham Radio Station and information on radio-friendly MPPT charge controllers and off-grid communications.