1.
A connection made to the earth for electrical safety
2.
Signals from a transmitter or oscillator occurring on whole-number multiples (2×, 3×, 4×, etc) of the desired operating frequency.
3.
A stage of an FM receiver that makes the receiver less sensitive to amplitude variations and pulse noise.
4.
The common single-sideband operating mode on the 40, 80 and 160-meter amateur bands.
5.
The metric prefix for 106, or times 1,000,000.
6.
The metric prefix for 10--6, or divide by 1,000,000.
7.
Short for modulator/demodulator.
8.
The 300 to 1000-Hz difference in CW transmitting and receiving frequencies in a transceiver.
9.
The rate of energy consumption.
10.
A conversation between two radio amateurs.
11.
Radio signals sent from one teleprinter machine to another machine.
12.
Signals that travel by line-of-sight propagation are reflected by large objects like buildings.
13.
A machine that can convert keystrokes into electrical impulses
14.
The EMF or pressure that causes electrons to move through an electrical circuit.
