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 […]
Q&A regarding different micromhos scores Read More »
Here is a letter from the Technical Service department of CBS Hytron tube company, dated June 1954, that discusses a common problem with tube testers. In this letter [ PDF ], which I scanned and restored via Photoshop for better readability, a person from the Max Fischman Co of Pittsburgh wrote to CBS Hytron Co.
CBS Hytron 12BH7 letter about Hickok test Read More »
Meter reading Range Micromhos BCDEF Reset DIRECTIONS: Enter your meter reading (0 – 120) into the “Meter reading” box. Choose your Range Switch position in the drop-down box. Press the “Calc Gm” button and read your micromhos score. Press “Reset” button to clear your entries or to start another calculation. NOTES: calculator works for all
TV-7 micromhos conversion calculator Read More »
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
repair broken TP-Link TD-8616 ADSL modem Read More »
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
Vintage Advertising page Read More »
