Personal Comments
I was asked by a reader named Henry if I knew of B&K 700-707 test settings for FM1000 tube. FM1000 is a unique Heptode detector oscillator, and as such really does not lend itself to “tube testing.” It is best tested in-circuit. That said, you can perform some basic checks on a FM1000 tube for …
Hey Tubesound, Hoping you can answer a question for me. I have an Amplitrex and a TV-7D/U tube tester. The Amplitrex tests a 12ax7 as new at 1600GM. According to your TV7 GM calculator, I believe that should translate to 64 on the TV meter. However, when I test the same 12ax7 on my TV-7 …
If you are trying to fix a TP-Link TD-8616 modem, chances are good that this is your problem. On May 21, 2012, I purchased from Newegg a new TP-Link ADSL TD-8616 DSL modem to replace a very old Westell modem that was supplied by Verizon. At that time, the reviews for this product were overwhelming …
On this page, you will find PDF’s that I create from my own collection of vintage advertising for tube amps, speakers, test equipment, microphones, etc. The ads often provide production specs and other useful information. A Altec – [ PDF ] Amplifiers, pre-amplifiers, mixers, Power Supply, FM-AM Radio tuner, speaker, speakers, Horn, horns. Some models …
In the 1930s, Crosley designed a tone-volume expander circuit that would, in theory, add fidelity to the music that you were receiving from over-the-air radio AM transmitters. The circuit was said to boost the bass and expand the volume. It was used in some of their better 1930s Crosley console radios that are popular with …
