#368 How to build performing antennas for LoRa, WiFi, 433MHz, Airplanes etc.(NanoVNA, MMANA-GAL)

I am often asked: Where do I get a good antenna? Or: Is this a good antenna? Unfortunately, you do not see if an antenna is good or bad before you do some measurements. Or you build one yourself. That is what we will do today. Be it for satellite reception, for LoRa, weather balloons, or even for Wi-Fi. Like that, we know what we have. And even can save some money. I am a proud Patreon of @GreatScott! , @ElectroBOOM , @Electronoobs , @EEVblog , and others No Docker, No Microsoft Teams, Zoom My HAMradio channel: / @hb9bla Links: 2.8" NanoVNA: https://www.tindie.com/products/hcxqs... 2.8" SMA NanoVNA V2: https://s.click.aliexpress.com/e/_A6Pm3F or https://s.click.aliexpress.com/e/_9zdUZ9 4" Type N NanoVNA V2: https://s.click.aliexpress.com/e/_AaJcaR SMA connectors male: https://s.click.aliexpress.com/e/_A6CM7R SMA connector female: https://s.click.aliexpress.com/e/_9xPlRx Steel rods (easier to solder): https://ebay.us/qI9RU3 Semi-rigid cable: https://s.click.aliexpress.com/e/_AOzVM9 Simulation Software: https://hamsoft.ca/pages/mmana-gal.php Ground-Plane Calculator: https://m0ukd.com/calculators/quarter... J-Pole Calculator: https://m0ukd.com/calculators/slim-ji... ARRL Antenna Handbook: https://amzn.to/2NhP4QL Rothammel: https://amzn.to/3bQHRkI Chapters: 00:00 Intro 00:41 Parts of an antenna 01:02 The Ground plane antenna 01:28 Impedance 01:45 Connectors 03:40 Building the ground plane antenna 04:48 Which wires and how long? 05:48 The build 07:04 What is a good antenna (including measurements)? 10:07 The antenna is finished 11:20 Far-field pattern and gain (incl. Simulation Software) 12:48 Other applications (Wi-Fi, satellites) 13:22 Conclusions 14:03 One last thing 14:30 Outro The links above usually are affiliate links that support the channel (no additional cost for you). Supporting Material and Blog Page: http://www.sensorsiot.org Github: https://www.github.com/sensorsiot My Patreon Page: / andreasspiess Discord: / discord If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission (of your purchases the next 24 hours) to buy new stuff for the channel My Amazon.com shop: https://www.amazon.com/shop/andreassp... For Banggood https://bit.ly/2jAQEf4 For AliExpress: http://bit.ly/2B0yTLL For Amazon.de: http://amzn.to/2r0ZCYI For Amazon UK: http://amzn.to/2mxBaJf For ebay.com: http://ebay.to/2DuYXBp https://www.facebook.com/profile.php?... / spiessa https://www.instructables.com/member/... Please do not try to email me. This communication channel is reserved for my primary job As an Amazon Associate, I earn from qualifying purchases