{"id":487,"date":"2024-07-31T02:40:30","date_gmt":"2024-07-31T02:40:30","guid":{"rendered":"https:\/\/cemaxecuter.com\/?p=487"},"modified":"2025-05-12T00:59:51","modified_gmt":"2025-05-12T00:59:51","slug":"july-22nd-to-july-28th-2024-ryfi-custom-modem-and-hands-on-with-t-halow","status":"publish","type":"post","link":"https:\/\/cemaxecuter.com\/?p=487","title":{"rendered":"July 22nd to July 28th, 2024 – RyFi Custom Modem and Hands on with T-HaLow"},"content":{"rendered":"\n

This week in DragonOS…<\/p>\n\n\n\n

Highlight of the Week: RyFi Custom Modem…<\/a><\/p>\n\n\n\n

Hands on with T-HaLow…<\/a><\/p>\n\n\n\n

Explore More with DragonOS…<\/a><\/p>\n\n\n

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Highlight of the Week: RyFi Custom Modem<\/h2>\n\n\n\n

Ryzerth, developer of SDR++, released RyFi last week. Here is his post on X announcing its release, as well as the modulation schemes, observed data rates, and error correction mechanisms: https:\/\/x.com\/ryzerth\/status\/1816209802856652944<\/a><\/p>\n<\/div>\n\n\n\n

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RyFi currently supports the Limesdr and BladeRF (just uncomment this line<\/a> and comment out the LimeSDR line). RyFi goes a step further than other RF modems by using a TUN interface to enable a network interface ryfi0<\/code> to appear under your network interfaces. This will let you handle the custom RF medium in the same way you handle Wi-Fi and Ethernet. In his post on X, Ryzerth even showed a client loading web pages from a server over RyFi! Looking at the GitHub repository, it seems like RyFi can run on Windows as long as PothosSDR<\/a> is installed, but it is also supported on Linux and DragonOS. Here is Cemaxecuter conducting an iperf test between a BladeRf and LimeSDR: https:\/\/x.com\/cemaxecuter\/status\/1817041602977681800<\/a><\/p>\n<\/div>\n\n\n\n

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RyFi is still under development, but you can find the GitHub repository here: https:\/\/github.com\/AlexandreRouma\/ryfi<\/a>. Please use at your own risk in a controlled environment if you are interested in playing around with RyFi yourself.<\/p>\n<\/div>\n\n\n\n

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Hands on with the T-HaLow<\/strong><\/h2>\n\n\n\n
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The T-HaLow<\/a> is a device produced by LilyGo that aims to provide a Wi-Fi HaLow bridge for devices via an Ethernet interface. The T-HaLow has some promise for the WarDragon, which currently uses the Alfa HaLow-U<\/a> as an optional Wi-Fi HaLow bridge. The T-Halow is almost 1\/4th the price of the HaLow-U and seems to offer similar functionality, but after picking up two T-HaLow\u2019s, Cemaxecuter had some trouble getting the devices to work out of the box. Follow along with the initial setup issue on GitHub<\/a>.<\/p>\n

For those that also might be interested in the T-HaLow, it is probably best to wait until LilyGo and the developers release a video on the usage of the devices. It is possible that users might need a flash programmer to get the devices to work which would reduce the relative cost of the T-HaLow to the HaLow-U. On the plus side, the developers of the T-HaLow are quick to respond and are trying to help resolve the issue. Hopefully some open-source collaboration will be able to resolve the issues with the T-HaLow in the future. If you are curious about Wi-Fi HaLow and other devices that support this protocol, Ben Jeffrey produced a good video on YouTube<\/a> a couple of months ago that does a good job reviewing link distance and speeds for a couple of different devices.<\/p>\n<\/div>\n\n\n\n

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Explore More With DragonOS<\/h2>\n\n\n\n