Simple way of making a variable resistor with the graphite (carbon) inside a pencil. I my childhood, pencils used be called lead pencils, though I have never seen
Some important features to be looked at in a radio receiver are its sensitivity, selectivity, fidelity, adjacent channel and image interference, automatic volume control (AVC), squelch and signal
We have seen that usual superheterodyne radio receivers have single conversion of received frequency to the intermediate frequency using a single local oscillator and mixer. In many of
Activity on LEO satellites in this region has been low after the peak during the ARISS SSTV experiment. Most of the passes of International Space Station were lonely
Even though we have several modes in amateur radio now including the various digital modes and phone modes, still there are a good number of fans for CW
Superheterodyne radio receiver, often known in short as a Superhet, was designed to overcome the shortcomings of a tuned radio frequency receiver. It uses a frequency mixer to
In the days of analog multimeter, the needle would flick once as the capacitor was being charged and then come back to zero. If the capacitor was leaky,
Tuned Radio Frequency Receiver is an old type of radio receiver, also known as TRF receiver in short. It has one or more tuned radio frequency amplifier stages
