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Free Shipping - One(1) Twin Triode Switch for Hickok - Model 7608B (Noval 9-pin), US $180 – Picture 0
Free Shipping - One(1) Twin Triode Switch for Hickok - Model 7608B (Noval 9-pin), US $180 – Picture 0

Free Shipping - One(1) Twin Triode Switch For Hickok - Model 7608b (noval 9-pin)

US $180

  • HK Island, Hong Kong
  • Jun 3rd
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One(1) Twin Triode Switch for Hickok Tube Testers - Model 7608B (Noval 9-pin) Why should I use a Twin Triode Switch on my Hickok? You may have noticed that most popular Noval basing (9-pin) twin triodes use setting 76080 on triode #1 and 21030 on triode #2, it is a lot of fiddle around and causes tube tester mechanical wear.  This gadget will simplify your work, for fast, accurate and consistent test results while minimizing tube tester mechanical wear, making twin triode test nice and easy! How do I use it on my Hickok? Take a 12AX7 dual triode as an example, just do the tube tester setting as you normally would for Triode #1 76080 and insert the Twin Triode Switch on the Octal socket.  Carefully insert the 12AX7 on the Twin Triode Switch Noval socket (9-pin), allow the tube to warm up and do the Line Adjust as you normally would, perform the Gm or Good/Bad test as usual.  On the Twin Triode Switch toggle switch position #1 is your Triode #1 and toggle switch position #2 is your Triode #2. You can now test your dual section triode and verify how closely they match at the flick of the toggle switch, no messing around with the tube tester settings over and over again. Which model(s) should I get? If your tester is a Hickok 533, 533A, 600, 600A, 605A, 750, 800, 800A/K or a Stark 9-66, 9-66A (Canadian Hickok) then you are looking at the correct Model 7608B for Noval (9-pin) basing triodes. If your tester is a Hickok 6000, 6000A/B, 6005, 539A/B/C or TV-7A/B/C/D then you should look for Model 7608A for Noval (9-pin) basing triodes.  Refer to separate listing on eBay. Model 4506 is for Octal (8-pin) basing triodes for all the Hickok models listed above. Refer to separate listing on eBay. You may want to get a set of the Twin Triode Switches (Model 7608B & Model 4506). Every switch is carefully handmade and fully tested.  Ceramic tube socket, 304 SS steel nuts and bolts, USA ferrite beads to suppress or filter the amount of high frequency electromagnetic interference (EMI) noise if any. Shipping is free during this promotion period.  Happy vacuum tube testing! Warning – do not attempt to use this switch to test a vacuum tube which requires tube tester setting other than 76080 !

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