Listened to a pass of International Space Station at 0730z in my region. It was a low elevation pass with only 16 degrees maximum elevation. I could work
GreenCube also known as Italy Oscar 117 (IO-117) was very popular among amateur radio satellite operators as it could provide much longer distance communications than the Low Earth
Long back when I used to assemble hobby electronic projects, components were mounted on printed circuit boards through holes in the circuit board on the side opposite to
Light Dependent Resistors (LDR) or Photoresistors are widely used in automatic street lights and garden lights. Ambient light falling on the device triggers an electronic circuit which switches
Semiconductor rectifier diodes are PN junctions with P type semiconductor for anode and N type semiconductor for cathode. They are used to convert alternating current to direct current
When I started off in amateur radio in 1985, Solar Cycle 21 was nearing its end with sunspot activity going down. Solar Cycle 22 started in September 1986.
Fractal antenna design was initially presented by W1YW at the ARRL convention in October 1994. Fractal antenna uses a self similar design to maximize the effective length of
Wireless router range extender can be used at home when there is no good connectivity from the home internet wireless router to all the rooms. This router has
Light emitting diodes or LEDs produce light when electrons combine with holes in the semiconductor, releasing energy as photon. First ones to be produced were infrared and red
