SCHALTUNGSANORDNUNG ZUR UMSETZUNG EINER FREQUENZ FUER FERNSEHEMPFAENGER

摘要

1. Circuit arrangement for converting an input frequency transmitted to a television receiver and not lying in the range of reception of the receiver into a frequency lying in its frequency range of reception, with the help of an oscillator stage and a mixer stage (16), and a band filter arranged before the mixer stage, characterised in that the oscillator (17) of the frequency converter (5) is fixedly set at such a frequency lying below the range of reception that the mixing product is in the UHF frequency range at the output of the mixer stage (16) in such a manner that with the fixedly set oscillator frequency of the frequency converter (5), the tuning of the band filter (15) is controlled by the tuning voltage of the television receiver tuner (4) tuned to the converted frequency of reception synchronously with the band filters in the television receiver tuner (4).