R---- ( Resistor. )

RAAN---- ( Right Ascension of Ascending Node. The Keplerian element specifying the angular distance, measured eastward along the celestial equator, between the vernal equinox and the hour circle of the ascending node of a spacecraft. This can be simplified to mean roughly the longitude of the ascending node. )

RACES---- ( Radio Amateur Civil Emergency Service--the Part of the Amateur service that provides radio communications only for civil defense purposes during periods of local, regional or national civil emergencies. )

Radiated Emission---- ( Radio-frequency energy that is coupled between two systems bt electromagnetic fields. )

Radio Amateur Civil Emergency Service (RACES)---- ( A part of the Amateur Service that provides radio communications for civil preparedness organizations during local, regional or national civil emergencies. )

Radio Amateur Satellite Corporation (AMSAT)---- ( An international membership organization that designs, builds and promotes the use of Amateur Radio satellites. )

Radio Frequencies---- ( The range of frequencies that can travel through space in the form of electromagnetic radiation. )

Radio-frequency Interference (RFI)---- ( Interference caused by a source of radio-frequency signals. This is a subclass of EMI. )

Radio Regulations---- ( The latest ITU Radio Regulations to which the United States is a party. )

Radio Shack---- ( The room where Amateur Radio operators keep their station. )

Radio Sputnik---- ( Soviet Amateur Radio satellites (see RS #). )

Radiotelegraphy---- ( See "Morse code". )

Radioteletype (RTTY)---- ( Radio signals sent from one teleprinter machine to another machine. Anything that one operator types on his teleprinter will be printed on the other machine. Also known as narrow-band direct-printing telegraphy. )

Random Length Wire Antenna---- ( A multi band antenna consisting of any convenient length of wire, connected directly to a Transmitter or impedance matching network without the use of feed line. )

RAM---- ( Random-access memory. )

RAPI ---- ( Radio Antar Penduduk Indonesia-- The official citizens band radio organization in Indonesia. )

RC---- ( Resistance-capacitance. )

R/C---- ( Radio control. )

RCC---- ( Rag Chewer's Club. )

RDF---- ( Radio direction fining. )

REACT---- ( Emergency group, monitoring Channel 9. )

Reactance---- ( The opposition to currant that a capacitor or inductor creates in an AC circuit. )

Reactance (X)---- ( Opposition to alternating current by storage in an electrical field (by a capacitor or in a magnetic field (by an inductor), measured in ohms. )

Receiver---- ( A device that converts radio signals into a form that can be heard or seen. )

Receiver Incremental Tuning (RIT)---- ( A transceiver control that allows for a slight change in the receiver frequency without changing the transmitter frequency. Some manufacturers call this a clarifier (CLAR) control. )

Receiver Overload---- ( Interference to a receiver caused by a strong RF signal that forces its way into the equipment. A signal that overloads the receiver RF amplifier (front end) causes front-end overload. Receiver overload is sometimes called RF overload. )

Rectifier---- ( An electronic component that allows current to pass through it in only one direction. )

Reference Orbit---- ( The orbit of Phase II satellites beginning with the first ascending node during that UTC day. )

Reflected Power---- ( A parasitic element placed "behind" the driven element in a directive antenna. )

Refection---- ( Signals that travel by "line-of-sight propagation" are reflected by large objects like buildings. )

Reflector---- ( an element behind the driven element in an Yagi and some other directional antennas. )

Regulator---- ( A device (such as a Zener diode) or circuitry in a power supply for maintaining a constant output voltage over a range of load currents and input voltages. )

Remote Control---- ( The use of a control operator who indirectly manipulates the operating adjustments in the station through a control link to achieve compliance with the FCC Rules. )

Repeater---- ( Radio Systems--which receive incoming signals and re-transmit it for an extended communication area or An amateur station, usually located on a mountaintop, hilltop or tall building, that receives a signal and retransmits it for greater range; An amateur station that simultaneously retransmits the signals of other stations. )

Repeater Directory---- ( An annual ARRL publication that lists repeaters in the U.S., and Canada and other areas. )

Repeater Station---- ( An amateur station that automatically retransmits the signals of the other stations or The ability to oppose an electric current. )

Resistance (R)---- ( Opposition to current by conversion into other forms of energy, such as heat, measured in ohms. )

Risistor---- ( Any material that opposes a current in an electrical citcuit. An electronic component specifically designed to oppose or control current through a circuit. )

Resonance---- ( Ordinarily, the condition in an ac circuit containing both capacitive and inductive reactance in which the reactance are equal. )

Resonant Converter---- ( A form of dc-ac converter characterized by the series pass switch turning on into an effective series-resonant load. This allows a zero current condition at turn-on and turn-off. The resonant converter normally operates at frequencies between 100 kHz and 500 kHz and is very compact in size for its power handling ability. )

Resonant Frequency---- ( The desired operating frequency of a tuned circuit. In an antenna, the resonant frequency is one where the feed-point impedance contains only resistance. )

REST---- ( Radio Emergency Safety Teams. )

RF---- ( Radio Frequency, emissions in the radio portion of the electromagnetic spectrum. )

RF Burn---- ( A burn produced by coming in contact with exposed RF voltages. )

RFC---- ( Radio-frequency choke. )

RF Carrier---- ( A steady radio frequency signal that is modulated to add an information signal to be transmitted For example, a voice signal is added to the RF carrier to produce a "phone emission" signal. )

RF Gain ---- ( This control, found on many CB radios, comes in handy when you have a station close by, which is
overloading your radios "Front-end". It de-sensitizes the incoming signal. )

RF Ground---- ( Connection for Amateur radio equipment to earth ground to eliminate hazards from RF Exposure and reduce RFI. )

RFI---- ( Radio-Frequency Interference. )

RF Overload---- ( Another term for receiver overload. )

RF Radiation---- ( Waves of electric and magnetic energy. Such electromagnetic radiation with frequencies as low as 36 kHz and as high as 300 GHz are considered to be part of the RFR region. )

RF Safety---- ( Preventing injury or illness to humans from the effects of radio-frequency energy. )

RHC---- ( Right-hand circular (polarization). )

RHCP---- ( Right-hand circular (polarization). )

Rice box---- ( Equipment made in Japan or the Orient. )

Rig---- ( The radio amateur's term for a transmitter, receiver or transceiver. )

Ripple---- ( The residual ac left after rectification, filtration and regulation of the input power. )

RIT---- ( Receiver Incremental Tuning--( Fine tuning the receive frequency without changing the displayed or memory frequency. )

RLC---- ( Resistance-inductance-capacitance. )

RM---- ( Rule making (number assigned to petition). )

RMS (voltage or current)---- ( Literally, "root mean square"; The square root of the average of the squares of the instantaneous values for one cycle of a waveform. A dc voltage or current that will produce the same heating effects as the waveform. For a sine wave, the RMS value is equal to 0.707 times the peak value of ac voltage or current. )

RMS--"Root of the Mean of the Squares"-- ( Refers to the effective value of an alternating voltage or current, corresponding to the dc voltage or current that would cause the same heating effect. )

RMS (root men square)---- ( A measure of the value of a voltage or current obtained by taking values from successive small time slices over a complete cycle of the wave form, squaring those values, taking the mean of the squares, and then the square root of mean. Very significant when working with good ac sine waves, where the RMS of the sine wave is 0.707 of the peak value. )

r/min---- ( Revolutions per minute. )

Roger---- ( Acknowledge or OK. )

Roger Beep---- ( An add-on device for CB's that beeps when the mike key is pressed or released. )

roger-dee---- ( Derived from military lingo term, roger, meaning confirmation. )

ROM---- ( Read-only memory. )

Rotator---- ( A device attached to an antenna mast which rotates it so that the antenna can point in different directions. )

Router---- ( A network packet switch. In packet radio, a network-level relay station capable of routing packets. )

r/s---- ( Revolutions per second. )

RS #---- ( The designator used for most Soviet Amateur Radio satellites (RS-1 through RS-13, for example). )

RS-232-C---- ( See EIA-232-C. )

RST---- ( Readability-strength-tone (CW signal report); A system of numbers used for signal reports; R is readability, S is strenght and T is tone. (On singlesideband phone, only R and S reports are used. )

RTS---- ( Request to send, physical-level signal used to control the direction od data transmission of the local DCE. )

RTTY---- ( RadioTeleType. A method of sending text information using shifting MARK/SPACE signals or audio tones; Narrow-band direct-printing telegraphy emissions having designators with A, C, D, F, G, H, J orR as the first symbol; 1 as the second symbol; B as the third symbol; and emission J2B. )

Rubber duck---- ( A shortened flexible antenna used with hand-held scanners and transceivers. )

RX---- ( Receiver, receiving. )

RxD---- ( Received data, physical-level signals generated by the DCE are sent to the DTE on this circuit. )

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Lycos Small Business

The Copyright Minefield By Jacqui Kramer, Contributing Author
10/5/2000 9:19:53 AM PDT

"The copyright issue is a sticky one for Web site owners and their employees, particularly contractors.
Currently in the United States, there are no laws that specifically address copyright issues in the online world.
However, the U.S. courts have ruled that existing copyright laws governing the print world can be applied to the online world."

If by mistake, I've used someone's copyright material, notify me, and I'll remove it.

All Trademarks are Recognised as belonging to Their Respective Owners