![]() It supports today’s de facto universal standard of communication-the Internet’s IPv4-and allows data to be transmitted at up to 500 kilobits per second on the popular 70-centimeter UHF ham radio band. It took six years, but the result is New Packet Radio (NPR), which I chose to publish under my call sign, F4HDK, as a nom de plume. I believed it was possible to create an even better protocol with a modern design that would be easier to use and inexpensive to physically implement. NBP was developed in the 2000s as a potential replacement for the venerable AX.25 protocol that’s been in use for digital links since the mid-1980s. In 2013, I was looking at a protocol called NBP, used to create a data network over amateur radio links. ![]() I like inventing things and diving into low-level things. I have been a hobbyist and maker for almost 15 years now. Data links work over the medium-range UHF band, but for the best results, a directional antenna is used.
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