OH8STN Ham Radio

OH8STN Ham Radio

Ham Radio, Amateur radio, Raspberry Pi, Portable Power, grid down, off grid, Emergency Communications, Winlink, JS8Call

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battery power

DIY LiFePO4 battery pack for the Yaesu FT-891

February 19, 2018 Julian OH8STN 0

Preparing for the next DIY LiFePO4 battery build. This time it’s a 128wh, 50A draw LiFePO4 battery pack for the Yaesu FT-891. Yaesu FT-891 GoKit […]

One perfect example of Off-Grid Amateur Field Comms 

January 4, 2018 Julian OH8STN 0

I just thought I’d share this video from Kevin W6RIP. Kevin was out on SOTA Expedition. He also took a few minutes to go over […]

PowerFilm Solar Tutorials

December 3, 2017 Julian OH8STN 0

I get lots of feedback from people saying they get the same value and functionality from “cheap” eBay or Alibaba solar panels as with the […]

Easy Desktop Charging A123 4S2P LiFePO4 

November 23, 2017 Julian OH8STN 0

A viewer asked if I could do a short explainer video showing desktop charging of our latest battery pack. Of course I can! So far […]

Portable Power: Wrestling with pigs

November 21, 2017 Julian OH8STN 0

Something unimaginable just a couple of weeks ago is reality today. Apparently, there’s a company which believes a more efficient use of its time, is […]

Portable Power: Why simultaneous charging & discharging?

November 19, 2017 Julian OH8STN 0

We do a lot of work with portable power on the channel and on the blog, yet there isn’t a day passing, where someone doesn’t […]

Lead Acid & AGM Batteries are a No Go!

October 29, 2017 Julian OH8STN 0

 Today while sitting here working on a video about portable Comms, I received a question from the operator asking me about AGM batteries for hiking. […]

Portable Ham Radio Tips & Tricks EP1 from Signal Search 

October 20, 2017 Julian OH8STN 0

I was looking for some new channels on YouTube or Instagram, hopefully channels which skip the entertainment, and focus purely on providing the education. Well, […]

Portable 5Ah LiFePO4 battery pack for ham radio 

October 12, 2017 Julian OH8STN 0

Once again, I put out the question about another battery build. The votes point to a smaller, lighter pack. Well, on October 04 2017, parts […]

QRP/p With an FT-817 20w PowerFilm & 10Ah LiFePO4 pack

September 25, 2017 Julian OH8STN 0

Quite often I sit out here at a nice spot along the sea enjoying the final moments of the summer/autumn. Even with the sun quite […]

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