记得相关文件对这自制和改装设备的要求主要都是电路上，不过SDR大头都是靠软件实现的…… 按改装算好像也有要求必须是在改装前也是业余设备才行来着。

好歹是工作在业余频段的才算“（业余无线电）自制设备”

@"BG6LH"#p19017 Wi-Fi频段和业余频段一直是有重合的，比如国内2.4GHz Wi-Fi的1-8频道在业余13cm频段内，5GHz Wi-Fi的149、153、157、161、165频道也在业余5cm频段内。有一些项目利用这一点魔改成品路由器来组建HamMesh网络来着，不过国内好像是不许这么干。而且这个项目推荐的好几块板子的工作范围都在75MHz-6GHz，改一下软件完整匹配到业余13cm和业余5cm应该也是可以的。

先把硬件电路图和物料清单搞定再说吧，SDR的硬件也得不少东西

@"BH2VYJ"#p19025 这项目基本上都是直接围绕某几个型号的射频开发板平台来着，除了插上PCIe插槽以外，在硬件上倒是没有别的什么步骤。只是不知这种板在法规上能不能算是零件，毕竟有几款设计上就是用来集成在最终产品上的。重新设计平台肯定是玩不起了，前几天还看到这个项目的创始人在微博的文章吐槽ADI这些射频大厂的工程师拿钱不当钱，搞得它们这些小型团队挺难受的来着。

@"BloodBlade"#p19031 您可以了解一下AREDN 【[业余无线电]嫌窄带太慢？试试AREDN吧！-哔哩哔哩】 https://b23.tv/wlX2QYq 这是目前小白能实现的业余无线电宽带通信 aredn专门对业余无线电进行了各种优化。评论区有 aredn的中文介绍视频

@"BloodBlade"#p19021 有，AREDN国外已经搞了好多年了。自组网工作在业余频率。不用手搓设备。

@"BH6ABO"#p19055 我就是之前看到了这个AREDN（好像前身叫Hamnet来着？），后来发现可能有些不太合规才会想有没有可能用种开源项目来搞。毕竟这个Open Wi-Fi也是主打一个低成本和简单。虽说这种频段应该懒得管，不过能合规还是更好一点。而且路由器刷机也影响不了内部的闭源芯片，这方面还是开源项目可玩性更高一点。

Can devices like OpenWHi-Fi, which are SDR (Software Defined Radio) devices, be considered homemade?

BloodBlade

Remember that the primary requirements for these homemade and modified devices, as specified in the relevant documents, were related to the electrical circuits. However, SDRs are mainly achieved through software.

According to the modifications, it seems that there was a requirement that the amateur equipment had to be in place before the modification.

BG6LH

At least if it's being used during off-peak hours, it can be considered a "homemade (amateur radio) device."

BloodBlade

BG6LH The Wi-Fi and amateur radio frequency bands often overlap. For example, the 1-8 channels of domestic 2.4 GHz Wi-Fi fall within the amateur 13 cm band, and the 149, 153, 157, 161, and 165 channels of 5 GHz Wi-Fi also fall within the amateur 5 cm band. Some projects have used this to create HamMesh networks using modified routers, but it seems that this is not permitted domestically.

Furthermore, the recommended operating range for several boards in this project is 75 MHz to 6 GHz. Modifying the software to fully match with amateur 13 cm and 5 cm antennas should also be possible.

BH6ABO

BloodBlade
Yes, AREDN has been running successfully for several years in other countries.
Self-organizing network. Operates on amateur frequencies. No need to build custom equipment.

BH2VYJ

Let's first finalize the hardware schematic and bill of materials, as the SDR hardware also requires a significant number of components.

BloodBlade

BH2VYJ This project essentially revolves around developing radio frequency (RF) development boards based on a few specific models. Aside from plugging in the PCIe slot, there are no other hardware steps involved. However, I'm unsure whether these boards can be considered components under regulations, given that several designs were specifically intended for integration into final products.

Redesigning the platform is definitely out of the question. Just a few days ago, I saw an article on Weibo by the founder of this project complaining about how large RF companies like ADI are paying their engineers poorly and making it difficult for smaller teams to operate.

BH6ABO

BloodBlade You can learn more about AREDN.

[Amateur Radio - Is narrowband too slow? Try AREDN!] - Bilibili https://b23.tv/wlX2QYq

This represents the current state of amateur radio broadband communication that a beginner can achieve.
Aredn has made various optimizations specifically for amateur radio.
There's a video in the comments section introducing aredn in Chinese.

BloodBlade

BH6ABO I had previously seen this AREDN (which I think was originally called Hamnet), and then realized that perhaps using some open-source projects could be a way to achieve similar goals, given that Open Wi-Fi also emphasizes low cost and simplicity.

While this frequency band shouldn't really be a concern, it's still better to comply with regulations. Also, flashing the router doesn't affect the internal proprietary chips; in that regard, open-source projects offer more possibilities.

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