IoT water tank telemetry project – JSN-SR04T-3.0 – first trial.Pitfalls of series stub matching with coax.IoT water tank telemetry project – HC-SR04 – second trial.A template for an air filter foam element.CirroMazzoni Baby small transmitting loop – a desk study.Measure transmission line Zo – nanoVNA – PVC speaker twin – loss model derivation.IoT water tank telemetry project – HC-SR04 – third trial.Measure transmission line Zo – nanoVNA – PVC speaker twin – loss models comparison #3.Measuring a 1/4 wave balanced line – nanoVNA.

IoT water tank telemetry project – 4-20mA / 1MPa pressure transducer trial.

Small 2-stroke engines and popoff pressure.

Review of inexpensive Chinese thermostat – DST1020.

On testing coax cable loss with an analyser / VNA – part 1.

On testing coax cable loss with an analyser / VNA – part 2.

On testing coax cable loss with an analyser / VNA – part 3.

On testing coax cable loss with an analyser / VNA – part 4.

Do I ‘need’ a masthead preamp to work satellites on 2m? – space noise scenario.

Do I ‘need’ a masthead preamp to work satellites on 2m? – terrestrial noise scenario.

Measurement of one of those ham lore components – figure 8 twinline.

QEX on SWR dependence on output impedance.

QEX on SWR dependence on output impedance #2.

Do I ‘need’ a masthead preamp to work satellites on 2m? – G/T vs G/Ta.

The mulcher appears affected by Ethanol.

On testing two wire line loss with an analyser / VNA – part 1.

On testing two wire line loss with an analyser / VNA – part 2.On testing two wire line loss with an analyser / VNA – part 3.

Rf transformer design software