The best of times. Battery technology has made huge advances in a relatively short amount of time. When batteries started being commercially produced in the early 1900s, lead acid or “wet cell” batteries were the only option. “Dry cell” batteries were made too, but they were for small applications such... Read more »

The post Lithium Batteries: Where We Came From, Where We’re Going. appeared first on Off Grid Ham.

It’s everything to everyone. Field Day 2024 is about a month away. It’s a contest, readiness drill, science fair, publicity stunt, geek festival, and party all rolled into one. It’s the Grand Poobah of amateur radio events. And this year my challenge to Off Grid Ham readers is not to... Read more »

The post Field Day 2024: Reach Outside Your Circle. appeared first on Off Grid Ham.

Didn’t see it coming. I’m sure I’m not the only one who felt completely blindsided to hear that MFJ Enterprises, a name that is surely known by every ham radio operator, is going out of business. The end of MFJ will also result in the sunset of its subsidiary brands,... Read more »

The post Everyone is an “MFJ Guy”: COMMENTARY appeared first on Off Grid Ham.

Time + technology= options. Ham radio has a lot more options than it did years ago. Back in the day your choices were phone or CW and that was about it. In the 1970s/1980s slow scan TV and early data such as RTTY came about, but they were niche modes... Read more »

The post Data Modes: Game Changer or Gimmick? appeared first on Off Grid Ham.

It’s about ham-less radio. I’m going to assume that everyone who reads this blog is either a ham or at least vaguely interested in becoming one. With that kind of a demographic, why should I even entertain the idea of covering unlicensed radio options? Well, it’s all about having choices... Read more »

The post Everything But The Ham 2024. appeared first on Off Grid Ham.

You didn’t know you needed one. Off grid amateurs often forego having an inverter as part of their power capability, most likely because DC powered radio gear doesn’t need one. An inverter also adds expense, and in the case of portable operations, adds weight and space. But inverters bring a... Read more »

The post Inverter Talk. appeared first on Off Grid Ham.

When one is none. Have you ever encountered a huge radio-related hassle over one small equipment failure? Your entire radio station can be kicked off the air because of one flakey connector or a blown fuse. If you don’t have a solution, you’re done. Equipment failures may be a mere... Read more »

The post Keeping Your Go Bag Going. appeared first on Off Grid Ham.

Nothing is sacred, including batteries. Do you have concerns about technology intruding on your life and privacy? We have reached a point where even batteries —yes, batteries— are documented and recorded. What am I talking about? You may have never heard of a digital battery passport (DBP), but pay attention... Read more »

The post Digital Battery Passport: Be Aware, Not Afraid. appeared first on Off Grid Ham.

A classic never goes out of style. Way back in 2016 I posted the Off Grid Ham 100 Watts for $300 Solar Plant. Even today, that article is still hugely popular and one of the most viewed posts on this website. In a 2020 update, the $300 threshold not only... Read more »

The post The Off Grid Ham 100 Watts For $300 Solar Project -2023 Update appeared first on Off Grid Ham.

The unloved child. Lots of hams are very successful with solar. It seems to be the “go to” off grid power source. I don’t have firm numbers, but anecdotally it appears solar is more popular than even gas generators. Of course, solar is not the only game in town. Wind... Read more »

The post Wind Turbines For Off Grid Radio: Pros and Cons. appeared first on Off Grid Ham.

Exponential market growth! Lithium battery technology has made exponential market penetration in the last decade or so. Once an exotic and expensive platform, today nearly every battery-powered device uses lithium. Along with increased market acceptance comes attention, both good and bad. Most of the bad news circulating about lithium batteries... Read more »

The post Lithium Battery Fire Risks: Sorting It Out. appeared first on Off Grid Ham.

It’s better to have it and not need it, than need it and not have it. It’s been quite a summer! Flooding, extreme heat, wild fires, and (at this writing) a hurricane just tore up the Western USA and another storm is churning in the Gulf of Mexico. Every time... Read more »

The post Turn Thinking Into Doing (But Do Some Actual Thinking First). appeared first on Off Grid Ham.

The “holy grail” of solar energy? It’s been over six years since Off Grid Ham first covered perovskite solar. For the unfamiliar, perovskite solar is a new type of photovoltaic technology that is based on perovskite-structure crystals. There are several advantages. First, is efficiency. Perovskite solar is far more efficient... Read more »

The post Perovskite Solar Update. appeared first on Off Grid Ham.

When you want to expand your battery capacity. Off grid ham radio has an addictive quality about it. You tell yourself, “I’ll get a modest battery and solar panel and just fool around a little bit. I’m not too serious about this,” thinking that’s as far as you’ll ever go.... Read more »

The post Battery Isolators, Separators, and Combiners. appeared first on Off Grid Ham.

Radio philosophy. If you see amateur radio as being greater than the sum of its parts, then you already understand where I’m about to go and will find affirmation in this article. If you value amateur radio solely for its utilitarian (communication) purposes, then you’re missing out. There is personal... Read more »

The post A Ham Radio Memorial Day -COMMENTARY appeared first on Off Grid Ham.

Wish list. Most off grid hams are off grid only for portable operations. Many of them would like a larger, permanent home system but don’t know where to start or what such a project involves. If having an off grid home solar power system has been a longtime wish, this... Read more »

The post Planning For Off Grid Home Solar. appeared first on Off Grid Ham.

Graduation time. A lot of if not most off grid hams have only one battery in their system. Connecting a single battery is more or less self-explanatory. What should you do when you expand your system to include multiple batteries? Should they be in series? In parallel? Is one way... Read more »

The post Series and Parallel Battery Connection Techniques. appeared first on Off Grid Ham.

It cannot be avoided… Batteries are arguably the weakest link in the off grid radio chain. Solar panels, controllers, connecting cables, and almost everything else can last years, even decades. But batteries are a consumable product and no matter how good yours are, it’s almost certain they will not last... Read more »

The post Batteries: Your Weakest Link. appeared first on Off Grid Ham.

Let the dead rest. Now several weeks out from being the #1 ham radio news story, the Yaesu FT-818/817 product sunset has faded from attention. Anyone not already on the Yaesu platform will have to seek QRP alternatives. Most hams were surprised, some were disappointed, and some were strangely…glad? One... Read more »

The post QRP Alternatives: After The Funeral, What Comes Next? appeared first on Off Grid Ham.