Hobbyist's SWR Meter for 5.8ghz

Hi folks, here's my newly made SWR meter for measuring vSWR of 5.8ghz antennae.
There's a Daiwa-II SWR meter for 2.4ghz, but there isn't one for 5.8ghz. 5.8ghz antennae are tuned with a Spectrum Analyzer and it requires the use of a Cal Kit (calibration tool) before taking each measurement. This goes to show how difficult it is to get accurate vSWRs at microwave frequencies. Therefore, this Do-It-Yourself SWR Meter is used for comparing vSWRs between antennae, as it is not as accurate as a spectrum analyzer. For hobbyists building antennae for the 5.8g FPV, this is a solution to having nothing at all. :)

This 'invention' is not mine.

The SWR Detector is the work of 'Ibcrazy' (his nick in rcgroups).

The schematics for the SWR Analog Meter's circuitry are the work of 'Pisces' (his nick in rcgroups).

Cheap spectrum analyzer that covers 900mhz/1.8ghz(GSM), 200-800mhz(VHF, UHF, HDTV), 29mhz/1.2ghz(HAM),1.45ghz(GPS), 2.4/5.2ghz (WiFi), 1.2/3.3/5.8ghz(drone)
https://www.youtube.com/watch?v=hyfZZ1VHsME

Видео Hobbyist's SWR Meter for 5.8ghz канала Terence Chan