All info here is accurate. BUT, to save time, calculate the "electrical"
wavelength needed mathematically for the "rough" estimate. Wavelength =
300/frequency (MHz) multiplied by the specified Velocity Factor from the
manufacturer. Then, add several inches for "tuning" via the VNA.
Michael L Robinson, KC0TA
“In the beginning of a change the Patriot is a scarce man, and brave, and
hated and scorned. When his cause succeeds, the timid join him, for then it
costs nothing to be a Patriot.” ― Mark Twain
When Tyranny becomes Law, Revolution becomes Duty!
On Sun, Mar 30, 2025 at 2:44?PM Team-SIM SIM-Mode via groups.io <sim31_team=
[email protected]> wrote:
Hi
a Calibrated smith diagram can show you easily the serial resonance
frequency and the parallele one ( Xr = 0 Omh ) ,
- use the 401 sweep points option to have maximum frequency accuracy .
- Stimulus band should be selected to be the minimum needed .
- Calibration and measurement prefered after at least 10 minutes for
thermal stability .
you can use open coax terminaison or short one , they should give
approximatly the same results .
73's Nizar.
