Author Archives: Chris Warren

What You Need To Know: PWM and MPPT Solar Charge Controller.

SOLAR CHARGE CONTROLLER

The solar charge controller is arguably the most important component of a solar energy system. Like the conductor of an orchestra, the solar charge controller makes it possible for all the other parts to work together. Understanding how a solar charge controller performs its task is important to planning for… Read more »

NVIS -Near Vertical Incidence Skywave: Why You Need It.

One of the big thrills of amateur radio is working DX. There’s a lot of excitement in contacting that “Holy Grail” station on the other side of the world and earning bragging rights on local FM repeaters. But crisis communications necessitate that amateur radio operators trade DX glory for close… Read more »

Basic Electronics: The Multimeter.

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It’s a given that a multimeter is one of the radio amateur’s best friends. The device is so fundamental that you can’t be a serious ham without one. Yet, most hams don’t know much about their multimeter, or how to select a good one. I will explain the various aspects… Read more »

Generator Beliefs, Realities, And What You Need To Know.

Anyone who is even vaguely thinking of being prepared for emergencies or adding off grid capability to their amateur radio station has at least considered getting a small gas generator. A Generator is a valuable but often misunderstood tool, and it does not help that much of the information out… Read more »

Product Discussion: Magnum Energy ME-SBC Smart Battery Combiner.

One of the biggest problems of off grid energy is getting batteries to work together. You cannot mix different types of batteries, old and new batteries, or batteries of different capacities. The Magnum Energy ME-SBC Smart Battery Combiner easily solves this problem for not a lot of money. When I… Read more »

The Adventure Begins Here.

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Welcome to the newly launched Off Grid Ham.  Our purpose is to discuss amateur radio technical topics with a focus on operating without commercial power. All hams, no matter how they power their equipment, will find a lot of worthwhile ideas here. I know a lot but I don’t know… Read more »