Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 0

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 1

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 2

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 3

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 4

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 5

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 6

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 7

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 8

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 9

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 10

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used AUCTION, US $410 – Picture 11

Beautiful Hickok 6000 Mutual Conductance Tube Tester Lightly Used Auction

US $410

Baltimore, Maryland, United States
Jan 29th

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This is a beautiful working example of one of the finest tube-testers ever built. It is one of the last of the great Hickoks and has been very lightly used. The roller tube-chart functions properly and has the test-data for many modern tubes not seen on other testers, such as 5687, 5755, 5670. Of course the test data for the old stand-bys such as 12AX7, 6V6, 6SN7 are included, too. (It tests solid-state devices such as transistors and diodes but I have never performed these tests.) I have tested many tubes with this unit. It is working properly. It has not, however, been professionally calibrated. It is a true analog device and tiny changes in either the bias or shunt controls have a dramatic effect on the test reading. This is a unit you can live with for the rest of your life. If you have never used one, it takes a little time and practice to perform a test correctly. For example, there are two ways to read the output: GOOD vs. REPLACE, or in MICROMHOS (transconductance). To do the good-replace test, you use the settings on the tube chart. To test for approximate transconductance, you use one of the three red dots on the shunt knob to set the scale on the meter. You can then compare the reading on the meter to the nominal standard reading shown on the chart. Sound complicated? It isn't. It just takes a little practice and patience to become an expert. If you want to use this as a commercial tube-seller, I suggest you have it professionally calibrated. Look on ebay for folks who perform that sevice. I have read their ads and they sound like they know their stuff. In the photos you can see me testing a Russian EL34 and a Chinese 6L6GC. Both lightly used. The EL34 tests a little low, the 6L6 is right on the money. You can test your own tubes to draw your own conclusions about the calibration. Remember, even GOOD tubes test differently. That's why outstanding tube sellers take such care in matching tube sets. There is a wealth of information about these tube testers on the web. They are loved and used daily by many people and they like to share their information. This one comes with excellent documentation. I will post pictures later of the cosmetic condition of the unit, along with all of the documents included. Because of the nature of this device, I will allow returns if it does not suit you. Please let me know as soon as possible that you plan to return the item. You must, however, pay shipping both ways if you return the instrument. Overseas bidders are welcome but the unit may NOT be returned. I do not know what effect line frequency has on the testing process. It is made for north American mains: 110-125 volts @ 60 cycles. Worldwide shipping. I am happy to work with you to reduce shipping costs; however, overseas shipping must be via United States Post Office - Priority Mail. I do not falsify customs documents, please do not ask.

Condition	Used : An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.
Seller Notes	“Very Clean - Working Condition, Functioning Properly”