SWR Power meter with protection for Solid State PA
SWR Power meter with protection for Solid State PA Version II Old article below this one Some people who built the power meter came with […]
Arduino
Arduino sequencer
Arduino sequencer To work together with the Arduino Power SWR meter we made a simple sequencer with the Arduino nano. It is highly flexible and […]
FET switch with PTT and alarm inputs
A FET switch to work together with the Arduino PWR / SWR meter and controllable by the PTT is published here. The FET is a […]
Turns Counter for vacuum capacitor or roller inductor
Introduction For my new to build HF PA I was looking for 3 turns counters for vacuum capacitor and / or a roller inductor. These […]
ON4CDU, GPS frequency standard & much more
On his webpage Hans published his GPS receiver already a long time ago. It can be found HERE As an extra Hans put in the […]
Arduino temperature meter for solid state PA
For my 23cm PA consisting of 4 PA’s I needed a temperature meter with protection in case the amplifier gets hot. The system is build […]
Kenwood Band decoder out of building blocks
Kenwood Band decoder in “Chinese blue” For my new HF amplifier I needed a band decoder for my Kenwood TS590. A search on the internet […]
Electronic Compass Arduino
Electronic Compass with the HMC5883 My friend Jac is active on 10 & 24 GHz portable. To aim his 90cm offset dish which is mounted […]
Stepper motor controller
My first attempt to write some arduino code for a simple stepper motor driver. This is used in combination with the L298 boards available from […]
K3NG CW keyer
In of my first attempts to use the Arduino, I came across the CW keyer from K3NG. I was amazed by the possibilities Anthony had […]