在学校申请无线电社团成功，由于启动资金紧缺，买不起正式无线电测向机，现在要寻找可以工作在2m波段的无线电收信机（价格最好在单个50元以内）要求要有db表，有电池，不需要包含天线仅在小范围近距离工作（2km以内）感谢各位爱好者给出建议🤝

@"BA4TAQ"#p82804 基本没有专为2米设计的收信机，我知道的可能可以用来侧向的也就 rtl-sdr 和 tinysa 频谱仪，但都是单价200多块钱。这两只有tinysa可以知道绝对电平值而且有电池。

@"BA4TAQ"#p82804 你可能需要考虑一下咸鱼低价rtl了，他的晶体不行，需要改/替换

50元以内，这也太低了，呵呵呵

买个电视棒改一改，或者自制一个接收机吧。

@"BA4TAQ"#p82804 买零件自己弄

@"BA4TAQ"#p82804 主要是这个db表难搞

不过07年的设备……还真不好说

Looking for a low-cost 2m wireless direction finding solution.

BA4TAQ

Successfully applied to join the radio club at school.
Due to a lack of initial funding, I couldn't afford a professional radio direction finder.
Now I need to find a radio receiver that can operate in the 2 MHz band (ideally, with a price of no more than 50 yuan each).
The requirements include a database, a battery, and no antenna.
Only for small-scale, close-range operations (within 2 km).
Thank you to all the enthusiasts for your suggestions.🤝

BG7MEB

BA4TAQ There aren't many receivers specifically designed for 2 meters. The only ones I know of that could be used for this purpose are the rtl-sdr and the Tinysa spectrum analyzer, but they both cost around 200 RMB each. The Tinysa is particularly useful because it can display absolute levels and has a battery.

BI9BUM

BA4TAQ You might want to consider the "咸鱼" (Yan Yu) low-priced RTL, but its crystals are not working properly and need to be replaced/modified.

BH9FPK

BA4TAQ Buy parts and assemble them myself.

BI9BUM

BA4TAQ The main issue is with this database table.

BD6MM

Less than 50 yuan, that's too low, haha.

BI1UNQ

Buy a TV stick and modify it, or build your own receiver.

BI9BUM

前两天挖掘hellocq的上古帖子翻到了一套多普勒测向机制作技术，来自用户“hocool”发明的“乾坤三乙型”无线电多普勒测向机，原文链接：https://www.hellocq.net/forum/read.php?tid=160326&fpage=1
这个成本基本上很低了，然后缺点就是需校准，代码部分还需完善，但是如果再搭配上先前的rtl，应该是能实现功能的

BI9BUM

However, regarding the equipment from 2007… it's difficult to say definitively.

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