Hickok Complete Calibration Unit w/Manual for 539B & 539C Tube Tester

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If you expect accurate results from your Hickok 539B and/or 539C Tube Tester, you NEED to own this..... The Hickok 539B and 539C should have their Calibration checked and/or adjusted yearly (minimum). Now YOU can Check & Completely Calibrate your Tube Tester at home. Presenting the All-In-One Calibration Unit featuring electronics designed by William Eccher with unit design and fabrication by TubesLab. Manufactured right here in the USA!! - No need to ship your tester and risk damage - No more long down time waiting for your tester to be serviced - Check and Calibrate your tester as often as you wish for a reasonable one-time investment - Save Money and obtain knowledge of your tester This All-In-One unit with precision components provides a Load Box and GM Meter Test which with the included 28-Page Illustrated Comb-Bound Manual (and your Multimeter capable of reading microamps) guides one to perform a complete calibration. The All-In-One Box provides the necessary loads and test points and is connected to the Octal socket by a custom cable. It is a strictly Passive device which ELIMINATES the need for an expensive Variac and Isolation Transformer, resulting in a quicker, simpler and SAFER method of calibration for both the tester and the operator. The GM Meter Test allows Main Meter Accuracy to be tested safely and independant of tester electronics with instructions for making adjustments. With only the most basic knowledge of electronics, following the procedures will not be difficult. The Manual is written in layman's terms and clearly explains each procedure, multimeter readings that should be seen, and what to do if adjustments are to be made. Also explains which components to check and/or replace if correction cannot be made otherwise. The Step-By-Step Color Instruction Manual covers ALL necessary components including Plate/Bridge and Screen/Bias Balancing both with and without an oscilloscope. Manual also includes 11 x 17 foldout schematics for both the 539B and 539C as well as component location drawings, Simplified Gm Test Circuit, and Instructions for making a Solid State 83 Tube Replacement. Unlimited help via email from the electronics designer William "Bill" Eccher is included and free of charge if any procedure needs further clarification. We are available and eager to help you achieve professional results!!! THE PERFECT COMPANION FOR YOUR HICKOK 539B/C TUBE TESTER!!! For Optional Accessory Kit, Replacement Capacitor Kit, Precision Bridge Replacement Kit, and THE Most Complete Tube Data Book Ever Compiled for the 539B/C Tube Testers, please visit the TubesLab eBay Store I will be putting these up for sale As I Get Them Fabricated and Tested *** FEEDBACK RECEIVED ON THESE UNITS *** Superb Product! Every 539 owner NEEDS this!! Thank you!!Super smooth transaction! Superb packing!! Highly recommend to all!!! A+++++++++Nice item, accurate description, good communication, well packed, fast shipping.I have received the item. Very satisfied. Thank you. Highly recommended seller++Nice Product. Well Delivered. Recommended Seller. A+++++,Great seller, fast shipment, as describe, recommended.Rcvd Today. It looks great. Thanks for selling it. Rate Seller AAAA+++ and More. Questions?? Don't hesitate to ask...we are at your service!!! AND COMING SOON..... TEST the 2ND SECTION of 9-Pin TWIN TRIODE TUBES with the flick of a switch!!!! With TubesLab's TWIN-TRIODE TEST ADAPTER for 12AX7, 12AU7, 12BZ7 and a whole list of most commonly tested tubes!!! More Electronics Wizardry from William Eccher.... International Buyers Welcome. TubesLab is in no way responsible for fees (customs, taxes, etc) a foreign country may impose as these are the responsibility of the buyer. Ship time for International packages depending on destination may take weeks to arrive. TubesLab Helping... read more

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