Category: Amateur Radio (Ham Radio)

This question was asked by a viewer on my YouTube channel. Most WebSDRs cover only HF. There are a few which cover VHF including 145.800 MHz, the frequency

In August 2024 I had posted about New FTX-1F Announced in Tokyo Ham Fair. Today I received an email from the local dealer from whom I had purchased

This is the reading from ATU-100 antenna tuner when 40m antenna was tuned for resonance using the external antenna tuner. It is displaying the capacitance value and inductance

Demo of connecting Arduino Uno to a computer using a USB type B to type A cable.

Demo of Compiling and Uploading Sketch to Arduino Uno for NEMA 17 Stepper Motor Control. Uploading New Sketch available from https://circuitdigest.com/microcontroller-projects/controlling-nema-17-stepper-motor-with-arduino-and-a4988-stepper-driver-module

Happy to be back on Amateur Radio on International Space Station after ‘Servicing’ my Moxon Yagi. Being 10 am on a working day, it was a ‘lonely pass’!

Here I am demonstrating how I am homebrewing a common mode current choke to cut off the common mode current on the the outer aspect of the antenna

See the A4988 driver Stepper Motor Driver for NEMA 17 Stepper Motor. Driver is needed for controlling NEMA 17 using microcontrollers like Arduino and Raspberry Pi Pico.

RG316 is a small diameter coaxial cable with silver-covered copper-clad steel stranded inner conductor. That means the innermost layer is steel, providing strength, followed by copper clad next

This is my new NEMA 17 stepper motor which I purchased from a local shop. NEMA stands for National Electrical Manufacturers Association, which standardized motor sizes using certain