各种奇奇怪的不明链接！长期更...

1.mini whip-antenna

此类天线为短波天线、有源天线、优点就是尺寸小，原理emmm，有时间再耕。。

http://radioaficion.com/cms/ip33-mini-whip-antenna/

http://dl1dbc.net/SAQ/miniwhip.html

 

2.细数各种开源天分、网分、频谱分

antenna analyzer、vector network analyzer、spectrum analyzer

 http://www.hamstack.com/project_antenna_analyzer.html

EU1KY 天分主站   https://bitbucket.org/kuchura/eu1ky_aa_v3/wiki/Home

http://www.w5big.com/QST_Article.pdf

https://www.qsl.net/k5bcq/Kits/VIA%20User's%20Manual%20V1.00.pdf

 

What is a Vector Network Analyzer, VNA: the basics

 https://www.electronics-notes.com/articles/test-methods/rf-vector-network-analyzer-vna/what-is-a-vna.php

 

http://hforsten.com/cheap-homemade-30-mhz-6-ghz-vector-network-analyzer.html

 

http://www.n2pk.com/VNA/VNAarch.html

https://www.minicircuits.com/WebStore/uvna_63.html

http://mail.adminsin.space/spectrumanalyser.html

 

 

3.https://www.qsl.net/va3iul/

https://www.qsl.net/k5bcq/Kits/Kits.html

http://www.rfwireless-world.com/

4.各种开源SDR类方案

http://hiqsdr.com/index.php?title=HiQSDR-Information

http://www.sdradio.eu/weaksignals/armradio/index.html

https://github.com/MichaelRColton/PSDR，此项目虽然当初在hackdayio上大火，后来也上了KS，但是阑尾了.....

mcHF

5.各种噪声发生器、jammer

6.NOAA-19

https://www.wmo-sat.info/oscar/satellites/view/341

7.LPDA 计算器

https://hamwaves.com/lpda/en/index.html#references

 

8 PJRC 世界范围内的电子项目工程？

https://www.pjrc.com/