Variable-frequency oscillator
Variable-frequency oscillator VFO is an acronym for Variable Frequency Oscillator ... various frequencies. Altering the frequency of the VFO will control the frequency to which the ... is tuned. Why do radios need a VFO? In a simple superhet radio receiver, incoming ... an internally generated radio frequency from the VFO in a process called mixing. The mixing ... the required incoming radio frequency and the VFO frequency were both rather high (RF) ...
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Amateur radio
... ability to use a Variable frequency oscillator (VFO) for controlling the frequencies of communications. Usually ... radio services granted the use of a VFO are military. All others, (aircraft; police; fire ... channelized frequencies. The privilege to use a VFO is granted to Amateur radio operator only ...
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Variable frequency Oscillator   (translated from German)
Variable frequency Oscillator Variable frequency Oscillator (VFO) ( engl : Oscillator with changeable frequency) ist のder ... のf5ur のalle はabstimmbaren Oszillatorschaltungen or Frequency generators. VFO generators become mainly in that Radio engineering ...
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Clapp oscillator
... circuit for constructing a variable frequency oscillator (VFO) that uses a single variable capacitor to adjust the frequency. In a Colpitts VFO, the voltage divider contains the variable capacitor ...
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Kenwood Electronics
... community. The original model included a single VFO (variable frequency oscillator), although a second VFO could be purchased as a stand-alone ...
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Summary of alphabet three letter combination (from UAA to XZZ)   (translated from Japanese)
... VFH VFI VFJ VFK VFL VFM VFN VFO VFP VFQ VFR VFS VFT VFU VFV ...
http://ja.wikipedia.org/wiki/アルファベット三文字組み合わせ ... - 23k - Cached (Japanese) - Wikipedia (Japanese) - Similar pages

Tranceiver (wireless radio)   (translated from Japanese)
... マイク から入力された音声を感知して自動的に送受信を切り替える機構をVOX（Voice Operated Relay）と呼ぶ。 電信において電鍵をON（マーク）にした時に送信、OFF（スペース）にしたときに受信がされるよう瞬時に切り替える方式をフルブレークイン、電鍵のマークが途切れて数秒後に受信に切り替える方式をセミブレークインと呼ぶ。フルブレークインの方が瞬時に電波の状況を把握できるなどの長所があるが、大出力の送信機ほど機能の実装は難しくなる。 トランシーブ動作 トランシーバーではないが、送信機と受信機とが別々にある場合、通常連続可変の受信周波数数と同じ周波数で送信機が動作できるように、受信機の可変周波数発振器(VFO)の出力を送信機に供給し、あたかも別筐体のトランシーバーのように動作させることがある。これをトランシーブ動作という。 受信機能 ノイズブランカー 自動車の点火プラグ、 雷 などから発生するパルス性のノイズを電気的に除去する回路がノイズブランカーである。 スケルチ ...
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Federation league Niederrhein   (translated from German)
... Matzke belongs for the first time a VFO to the FVN executive committee. 1959 Co ...
http://de.wikipedia.org/wiki/Verbandsliga_Niederrhein - 67k - Cached (German) - Wikipedia (German) - Similar pages

Superheterodyne receiver   (translated from German)
... used Resonant circuits or HF- Synthesizer (see VFO, VCO , PLL and DDS). Of the co ...
http://de.wikipedia.org/wiki/Überlagerungsempfänger - 66k - Cached (German) - Wikipedia (German) - Similar pages

Oscillator circuit   (translated from German)
... Digitally control LED Oscillator), Variable frequency Oscillator (VFO), Variable Crystal Oscillator (VCO)
http://de.wikipedia.org/wiki/Oszillatorschaltung - 2k - Cached (German) - Wikipedia (German) - Similar pages