citiesbad.blogg.se - Nanovna v2 plus4

A simple transformer model of the Guanella 1:4 balun – some further observations.Garden environmental telemetry project – part 4.

Modelling an antenna as a simple two terminal resistance is often naive.An improved simple Simsmith model for exploration of a common EFHW transformer designs (v1.03).Another small efficient matching transformer for an EFHW – LO1238 – VK3PY, VK3TU build and measurement.Another small efficient matching transformer for an EFHW – 2 x 5943000601 (FT82-43) – VK4JJ build and measurement.Another small efficient matching transformer for an EFHW – 2643251002 – #5 – improved Simsmith model (v1.03).Garden environmental telemetry project – part 5.

Review of inexpensive Chinese thermostat – DST1000.

Comparing RF Power Amplifier Tube Performance Computer and Calculate initial load line of valve RF amplifier on the AL811H.

(tr)uSDX unauthorised product and countermeasures.

tinyPFA – a set of Allan Deviation plots.

tinyPFA – Trimble Thunderbolt GPSDO vs Leo Bodnar Precision GPSDO.

tinyPFA – HP8656B vs Trimble Thunderbolt GPSDO.

BG7TBL FA-3-6G frequency meter – initial impressions.

nanoVNA-H – can firmware be updated if it has a broken USB socket?.

Refurbishing aluminium antenna parts affected by weather / corrosion.

Can a diode be used to rectify signals smaller than its ‘threshold’ voltage?.

Pulse test of a Hantek 6204BD 4 channel 200MHz USB DSO and supplied probe.

Re-engine of Deutscher 650 chipper shredder.

Review of mower starter motor current using Owon HDS242S and Hantek CC-650.

Programming a PIC 12F510 using the DIY-150 programmer.

Derivation of the expression for the unknown impedance in an s21 series through measurement.

Paccomm Tiny-2 Mk2 capacitor polarity problem.