In a synchronized oscillator, the capability to operate in the absence of a synchronizing signal.

Coupling of magnetic, electric, or electromagnetic fields that are not confined to a conductor.
Note: Coupling by the deliberate introduction of capacitors and inductors is not considered free-space coupling.

The signal attenuation that would result if all absorbing, diffracting, obstructing, refracting, scattering, and reflecting influences were sufficiently removed so as to have no effect on propagation.
Note: Free-space loss is primarily caused by beam divergence, i.e., signal energy spreading over larger areas at increased distances from the source.

A system of computer networks (usually funded by individuals or organizations) consisting of community-based bulletin board systems with, e.g., e-mail, information services, interactive communications, and conferencing, and that are available to the user free of charge, or for a small membership fee. See [for radio communications] free net.

Software that is developed usually by individuals or small companies and distributed, usually via FTP, at essentially no cost to the recipient.
Note: Often the developer or another party retains the copyright to the software product; therefore, freeware is not necessarily in the public domain, and its distribution may be controlled by the copyright owner.

A frame of visual information that is selected from a set of motion video frames, and is held in a buffer.

Television in which fixed ("still") images are transmitted sequentially at a rate far too slow to be perceived as continuous motion by human vision.
Note: Transmission of an image is usually performed periodically by a processing unit that contains memory in which data representing the image are stored. For an image of specified quality, e.g., resolution and color fidelity, freeze-frame… (Read More →)

The condition that occurs when an earlier nonactive speaker on an input transmission trunk channel becomes active and cannot immediately be assigned to a bearer channel, due to lack of free instantaneous transmission capacity. [T1.309-1990]

The ratio of the total time that the individual channels experience the freeze-out condition to the total time of the active intervals, and their corresponding hangover times and front end delays, for all transmission trunks over a fixed interval of time, e.g., 1 minute. [T1.309-1990]

1. For a periodic function, the number of cycles or events per unit time.
2. The number of cycles occurring per second of an electrical or electromagnetic wave; a number representing a specific point in the electromagnetic spectrum. [47CFR]