2020年11月28日 · WTB: 6AG5 Found 3 replies · Last post by Scott · Dec Mon 13, 2021 1:05 am; Are 6AG5 tubes supposed to test low? 17 replies · Last post by Jthorusen · Jun Sun 05, 2022 7:17 am; What advantages can I get owning a frequency counter? 70 replies · Last post by NavyChiefETC · Jul Sat 17, 2021 9:02 pm; Subbing a 3A4 Pentode for a WD-11

2017年9月4日 · The second 6AG5 was also defective, but the damage was already done to the filter cap and the 5U4. I know that two 6AG5 tubes failing in the same way is a very remote possibility. However, I do not see how a failed filter cap and rectifier could cause a …

2008年9月20日 · It certainly does appear to eb a juke-box amplifier, and the added 6AG5 is probably a phono pre-amp to allow the machine to be retrofitted with a magnetic cartrige. tis unit appears to be a Mills form the late 1930's.

2022年5月25日 · You have a 6BC5 or other direct substitutes you can try in the tester?

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I was going through my late father's notes on the Hallicrafters SX-42. In the service bulletin, he wrote that at one time, he had replaced the 6AG5 tubes with 6BC5's. These are used as 1st/2nd RF Amps. What would the advantages/disadvantages be of such a substitution?

2005年5月22日 · I think we are comparing apples and oranges.<P>The RCA 68R* has only a 6BE6 converter and no RF amp stage.<P>The Emerson has a 6BE6 converter with a 6AG5 RF amp ahead of it.<P>The Westinghouse uses a 6J6 dual triode front end, the first triode as a separate RF amp.<P>I think, as a rule, ANY FM receiver without an RF amp stage is …

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2019年7月18日 · I have 6 of these for sale $15 includes shipping - all tested good - Not sure if used or NOS but look unused - Griz

2010年3月16日 · Steve - I re-read the Rider information and you are correct, although they don't explain it very well. They do list the 6AG5's as 1st Converter and 2nd Converter and say the oscillator operates at 1/2 the received frequency minus 5.35 mhz. So what would normally be the mixer coil and tuning cap is really a tuning a signal in the 50 mhz range?