Grupa: Administrator 
Lokalizacja:: Kłodzko JO80IK
Posty: 39672 #8140133
Od: 2013-10-18
| #326: How to Measure the impedance of "unknown" coax using a NanoVNA
This short tutorial video shows how to use the NanoVNA to measure the impedance of an unmarked piece of coax transmission line. It uses the unique impedance transformation that occurs with a quarter-wavelength transmission line. By measuring the resistive component of the line at a frequency at which the line is a quarter-wavelength long, the unknown line impedance is simply the square root of the product of the termination impedance and the measured value.
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI » DARMOWA REJESTRACJA
TYLKO ZAREJESTROWANI I ZALOGOWANI UŻYTKOWNICY WIDZĄ LINKI » DARMOWA REJESTRACJA
_________________
Life above 50,000 MHz
73! Stanisław Kłodzko JO80IK
IC-7300 + IC-9700 + (2m - 9el + 250W),
(70cm - 21 el + 250W), (23cm - 55 el + 150W)
|
