[DisasterRadio] Learning about antennas and impedance matching

[Marc Juul]

I created a page on the wiki with some learning resources for getting up to
speed on the work we're starting to do on antenna design and impedance
matching networks:


https://github.com/sudomesh/disaster-radio/wiki/Antennas-and-impedance-matching

Since we'll need a VNA for this work I included a comparison of different
affordable VNAs.

Tomorrow evening we'll probably spend some time building a simple test
setup with two computers displaying the RSSI from the RFM95 modules.

-- 
marc/juul
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