#350 NanoVNA Vector Network analyzer 900MHz VNA for $50

Episode 350
vector network analyzer
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see a large expensive VNA here:
https://youtu.be/_bRpnTyV0LU

update to calibration:
Reset
Cal
attach open SMA to CH0 - OPEN
attach short SMA to CH0 - SHORT
attach 50ohm load SMA to CH0 - LOAD
attach 50ohm load SMA to CH0 and CH1 at same time - ISOLN
attach cable(s) to both CH0 and CH1 to create RF path between - THRU
DONE
SAVE

using 50ohn loads on both channels for isolation cal lowers the noise floor

SPECS
Number of Calibration Points: 101 (Fixed)
Number of Scanning Points: 101 (Fixed)
Display Tracking: 4, Marking: 4, Save Setting : 5
PCB: 54mm x 85.5mm x 11mm (without the size of connectors, switches)
Measurement Frequency: 50KHz ~ 300MHz (50KHz -900MHz, enable extended firmware)
RF Output: -13dbm (maximum -9dbm)
Frequency Accuracy: 0.5ppm
Measurement Range: 70dB (50kHz-300MHz), 50dB (300M-600MHz), 40dB (600M-900MHz) enable extended firmware)
Port SWR: 1.1
Display: 2.8 inch TFT (320 x240)
USB Interface: USB Type-C; Communications Mode: CDC (Serial)
Power Supply: USB 5V 120mA, built-in 400mAh electricity, maximum charging current 0.8A

Видео #350 NanoVNA Vector Network analyzer 900MHz VNA for $50 канала IMSAI Guy