Glossary of Terms

Audible - A sound that we can hear, generally in the 20 Hz - 20 kHz frequency range.

BNC - Short for “British Naval Connector.” A standard RF antenna connector used by many wireless receivers, including the Samson UR-5 and UR-5D.

Carrier - An inaudible high-frequency radio signal that is continuously modulated by an audible signal (it therefore is said to “carry” the audible signal).

Channel - In wireless transmission, refers to a particular radio frequen- cy.

Demodulation - In FM transmission, the process of removing the carrier signal and thereby restoring the original audible signal.

Frequency - Refers to the number of wavecycles occurring per second. Audible frequencies are in the range 20 Hz - 20 kHz; radio frequencies are considerably higher.

Frequency Modulation (FM) - A form of radio transmission by which the frequency of a carrier signal is continuously modulated by the audible signal to be transmitted. A receiver then demodulates the signal by removing the carrier signal so that the original audible signal is restored. Group - In wireless transmission, refers to a selected set of radio fre- quencies.

Headset - A “hands-off” microphone worn with a headband.

Hertz (Hz) - A unit of frequency measurement denoting one wavecycle per second.

Inaudible - A sound that we cannot hear. Radio waves (which have fre- quencies ranging from the tens of thousands to millions of waves per second) are all inaudible.

KiloHertz (kHz) - A unit of frequency measurement denoting one thou- sand wavecycles per second.

Ladder - Refers to a multi-segment meter, where the number of seg- ments that light are proportional to the strength of signal.

Lavalier - A “hands-off” clip-on mini-microphone.

MegaHertz (mHz) - A unit of frequency measurement denoting one mil- lion wavecycles per second.

Modulation - The process by which one signal is continuously affected by another. The Samson UHF Synth system utilizes frequency modula- tion, whereby the frequency of a carrier signal is continuously modulated by the audible signal to be transmitted.