Listened to the downlink frequency of the cross band repeater on International Space Station just now. It was an 80 degree maximum elevation visible pass in my region.
Supercapacitors are also known as ultracapacitors. They are high value capacitors much above the usual electrolytic capacitors which we use in our hobby electronics projects. As an example,
Sometime back we had discussed about diplexers used for LEO satellite operations and duplexers used for repeaters. Diplexer is meant for two different bands like VHF and UHF
Raduino circuit board supplied with µBITX has an arduino soldered to the Raduino board, control lines for the display unit, Si5251 a PLL clock generator chip, 5V regulator
It is common knowledge among radio amateurs that a 40m center-fed half wave dipole antenna will work very well on 15m. That is because center fed dipole antennas,
An ideal long wire antenna is one which is several wavelengths long. But that is not practical for most amateur radio operators. Sometimes it is also called as
