Measurement Utilities

VNA

Check Touchstone files for |Sij| > 1: check.exe

Suppress stray coupling or capacitance when measuring series impedance: stray.zip

Ground

Calculate seawater permittivity given salinity and temperature: perm.exe

Correct ground parameters in George Hagn SRI International papers: hagn.exe

Q Meter

Compensate for the Q of an auxiliary capacitor that extends inductor measurement range: qm.zip

RF

Convert RF level units: u.exe

Calculate system noise figure and preamp benefit: nf.exe

FM Stereo

Calculate DSB and SSB stereo separation and response given the composite response: sep.zip

Play audio files to the wideband external input of your FM signal generator to turn it into a stereo generator. These one-second, left-channel, 9% pilot, stereo-composite .WAV files are for 0.02, 0.1, 1, 5, 10, and 15 kHz tones. They use 16-bit samples at 192 ksps. Audacity can repeat one of these files without a glitch: stereogen.zip


April 22, 202488–108 MHz