The full wave rectifier allows the full ac waveform to pass through; one half of the cycle is reversed in polarity. It is very similar to cable tv line that you see strung between power poles around town. Transceivers can be programmed manually and they have the ability to store a number of channels and their associated CTCSS tones. MUF — Maximum Usable Frequency, a measure of the highest frequency that will support transmissions off of the ionosphere. A modem modulates a radio signal to transmit data and demodulates a receive signal to recover transmitted data.
Dits are sent by pressing one paddle of the key, dahs sent by pressing the other one paddle. BAUD — The unit of digital-signal speed. Several companies are developing new methods to overcome video interference. The radials are slightly longer than one-quarter wave, and may droop toward the ground. Today it is normally possible to programme the transceiver using a computer. Will I remember all those rules, regulations, theory and all that other stuff I had to study?
Indicate how many readings you took to for in your average. Modulation Modes carrier-operated relay COR — Repeater Term circuitry that causes the repeater to transmit in response to a received signal. How do I choose my first radio? The physics explained in this article are simplified. Following this rule prevents mishaps from forgetfulness, malfunctioning equipment, or any other reason. Transmit and receive on different frequencies.
CRT — Cathode-ray tube. Most repeater installations use the same antenna for transmit and receive. The strongest signal usually wins. This is referred to as a negative offset. Also note that this script has no error handling, so if things go as expected it will work, but if not it will certainly produce lots of errors. AWG — American Wire Gauge — standard for describing the diameter of wire by which the wire size increases as the gauge number decreases.