- uhf band pass filter
- 特高频带通滤波器
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Distributed element filter — Figure 1. A circuit featuring many of the f … Wikipedia
Nyquist filter — A Nyquist filter is an electronic filter used in TV receivers to equalize the video characteristics. The filter is named after the Swedish–US engineer Harry Nyquist (1889–1976). Contents 1 VSB 2 Example of a VSB 3 Demodulation problems … Wikipedia
Mechanical filter — Figure 1. A mechanical filter made by the Kokusai Electric Company intended for selecting the narrow 2 kHz bandwidth signals in SSB radio receivers. It operates at 455 kHz, a common IF for these receivers, and is dimensioned 45×15×15 mm ( … Wikipedia
Software-defined radio — A Software Defined Radio (SDR) system is a radio communication system where components that have typically been implemented in hardware (i.e. mixers, filters, amplifiers, modulators/demodulators, detectors. etc.) are instead implemented using… … Wikipedia
Television interference — (TVI) is a term for anything that can adversely affect the signal reaching the TV or the TV s ability to function correctly. It is usually an indicator of electromagnetic compatibility problems.In this page only conventional UHF (or VHF) AM TV… … Wikipedia
IED jamming systems — Improvised explosive device (IED) or Remote Controlled Improvised Explosive Device (RCIED) jamming systems are electronics based radio frequency (RF) communication systems categorized as an electronic warfare (EW) countermeasure device designed… … Wikipedia
Diplexer — A diplexer is a passive device that implements frequency domain multiplexing. Two ports (e.g., L and H) are multiplexed onto a third port (e.g., S). The signals on ports L and H occupy disjoint frequency bands. Consequently, the signals on L and… … Wikipedia
Radio repeater — A radio repeater is a combination of a radio receiver and a radio transmitter that receives a weak or low level signal and retransmits it at a higher level or higher power, so that the signal can cover longer distances without degradation. This… … Wikipedia
Antenna (radio) — Whip antenna on car … Wikipedia
Amiga — This article is about the family of home computers. For other uses, see Amiga (disambiguation). The former Amiga logo, as used by Commodore Amiga Inc … Wikipedia
Squelch — In telecommunications, squelch is a circuit function that acts to suppress the audio (or video) output of a receiver in the absence of a sufficiently strong desired input signal. Contents 1 Carrier squelch 2 Tone squelch and selective calling 2.1 … Wikipedia