2013年1月19日 · The 6BQ7A is a miniature, medium-u, twin triode primarily designed for use as a cascode radio frequency amplifier in very high frequency TV tuners. In this application, its …

Some 6BQ7's can be rather microphonic in a guitar amp but some are OK. 4 stages is not excessive gain either. There is a $100 guitar amp design challenge on this forum. One of my …

Low-noise grounded grid RF amplifier. Replaced the 6BQ7 within 2 years of the 6BQ7 announcement. It has some 12% higher gain, the characteristics are otherwise the same.

2011年10月23日 · I read in many places that an EL86 can fit on amp designed for EL84, with small adjustments. I took the 18W and i´m trying to adapt to EL86... If you have a better …

2020年10月3日 · 6BQ7Aはこの1kΩ抵抗値を使う場合が多い。 上記からするとカソードチョークの効果は大きく歪率が低く抑えられ最大出力も大きくなる。 実際にアンプに使用した場合 …

6R-HH2は、高周波増幅用双3極管 6BQ7A を元に、東芝が1958～1959年頃（S・33年頃）にテレビチューナーのカスコード接続RF-Ampを目的として改造開発した球で、多くは混合発振管 …

2024年9月9日 · I'm finalizing the design of a RCA-type phono preamp with a cathode follower at both outputs. After reviewing several different tubes for this, the 6BQ7A seems to be a winner. …

The 6BQ7A is an all glass miniature VHF double triode and is internally screened. A valve like this would be used for RF amplification, or frequency multiplication. In the latter case the valve is …

Tube 6BQ7 or Röhre 6BQ7 ID3812, Double Triode, Noval, 9 pin miniature (USA pico-9) B9A and VHF shown. Radio tubes are valves.