TV-7/U VACUUM TUBE TESTER - DJN REBUILD + DUAL-MODE DIGITAL METER

Description: === TONS OF HI-RESOLUTION PICTURES AFTER THE LISTING DETAILS AT THE BOTTOM. BE SURE "NOT" TO MISS THEM! === ------------------------------------------------------------------------------- PLEASE REMEMBER: NICE/RARE ITEMS AND GOOD SERVICES AREN'T CHEAP AND NEVER ARE THEY FREE!!! BUT, WE STRIVE FOR 100% CUSTOMER SATISFACTIONS AND OUR EBAY FEEDBACKS & INTERNATIONAL REPEATED REFERALS SPEAK FOR THEMSELVES!!! OUR EBAY TRANSACTIONS REPRESENT ABOUT 10% OF OUR OVERALL BUSINESS VOLUME, WHICH THE REST (OF THE 90%) ARE DIRECT AND VIA REFERALS! ------------------------------------------------------------------------------- FOR SHIPPING ANYWHERE IN THE U.S. AND WORLDWIDE, - HOW WE PACK - & - HOW WE CRATE - !!! SHIPPING QUOTE INCLUDES PALLETIZING & GROUND FREIGHT/INSURANCE/DELIVERY TO 48-US DESTINATIONS. CONTACT FOR OTHERS OR DIFFERENT SERVICE! >>>>>> LINK TO OUR PAST PROJECTS & SALES!!! ------------------------------------------------------------------------------- LOCAL AUDITION & DELIVERY ARE POSSIBLE & NEGOTIABLE. POTENTIAL/SERIOUS BUYERS ARE WELCOMED TO COME AND AUDIT FOR COMPLETE SATISFACTION. FOR SALE IS A VERY CLEAN AND FULLY FUNCTIONAL TV-7/U VACUUM TUBE TESTER. THIS UNIT HAS BEEN IN MY LOT OF TESTERS FOR ABOUT 3 YEARS GOING ON THE 4TH YEARS, BUT SEE VERY LITTLE USE SINCE I PRIMARILY EMPLOY THE SERVICE OF MY CURVE TRACERS OR PREVIOUSLY THE HICKOK COMPUTERIZED-CARDMATIC. AS WHEN/IF I WAS GOING TO SPEND MY TIME LOOKING AT SOME TUBES, I MIGHT AS WELL GET ALL THE RELEVANT PARAMETERS WHICH ARE READILY AVAILABLE FROM MY CURVE TRACERS AND NOT SO MUCH FROM THE SERVICE-GRADE TESTERS SUCH AS THE TV-7's. NEVERTHELESS, THE TV-7 TYPES ARE VERY USEFUL TO COMPARE/VALIDATE RESULTS FROM TUBE SELLERS WHO USE TV-7'S TO CHECK THEIR TUBES FOR SALE - ASSUMING THE TESTERS HAVE UP-TO-DATE CALIBRATIONS. ADDITIONALLY, THE TV-7's ARE WELL BUILT AND ARE RUGGED AS THEY WERE BUILT TO MILITARY SPEC'S. THEY ARE ALSO VERY COMPACT AND RELATIVELY LIGHT - MAKING THEM USEFUL AND PORTABLE FOR FIELD USE. WHEN THESE TESTERS HAVE BEEN REBUILT AND CALIBRATED BY THE EXPERTS - PARTICULARLY DANIEL NELSON - THEY HAVE MUCH HIGHER ACCURACY/REPEATABILITY AND LOWER VARIATIONS THAN THEY WERE EVER INTENDED FOR WHEN THEY WERE FIRST PRODUCED AND INTRODUCED INTO FIELD SERVICE. THE NELSON-SERVICED TV-7's ARE DEFINITELY SUITABLE FOR CONTEMPORARY EMPLOYMENTS IN RIGORUOS VALIDATIONS OF MODERN AND VINTAGE ELECTRON VACUUM DEVICES. IN THE HANDS OF THE KNOWLEDGEABLE AND CAPABLE USERS, THEY ARE INDISPENBLE AND NECESSARY TOOL! BEFORE MY OWNERSHIP OF THIS TV-7/U TESTER, I PREFERRED THE HICKOK 539C AND 752A UNITS. THE 539C UNITS ARE MORE USEFUL IN PROVIDING AN EXTERNAL MEAN TO MEASURE THE PLATE CURRENTS DURING TESTS WHICH IMPORTANT FOR TRULY MATCHING SINGLE-DEVICE TUBES & MATCHING/BALANCING DUAL-SECTION TUBES. THE 752 UNITS ALLOW TESTING OF DUAL-SECTION TUBES IN ONE SINGLE TEST SETTING. A WELL-MATCHED AND BALANCED DUAL TRIODE, FOR INSTANCE, SHOULD HAVE TIGHT READINGS FOR GM & IP FOR BOTH HALVES OF THE TRIODES. MR. NELSON'S DUAL-MODE DIGITAL METERS ON THE TV-7's PROVIDE THE SAME CAPABILITY FOR READING TIME-AVERAGED PLATE CURRENTS AS IN THE 539C's. THE DIGIAL METER DEFAULTS TO TRANSCONDUCTANCE READINGS (SLOPE OF THE Ip vs. Vg CURVE AT THE PLATE/BIAS TEST POINTS) AND TOGGLES THE TIME-AVERAGED PLATE CURRENT AND BACK. THEN I PROGRESSED TO OWN SEVERAL TRIPLETT 3444 UNITS WITH DIGITAL PLATE CURRENT METERS. THEY ARE BETTER THAN THE TV-7's BUT NOT AS PORTABLE. I SOLD ALL THE 3444's. SADLY THE SOURCE I USED FOR TRIPLETT REBUILD & UPGRADE WORKS IS NO LONGER AVAILABLE AND THUS THERE WILL BE NO MORE "MODERNIZED" TRIPLETT 3444's THAT WOULD MEET MY REQUIREMENTS. SO TV-7's WITH DUAL-MODE DIGITAL METERS ARE REALLY THE ONLY OPTIONS GOING FORWARD AS FAR AS "MODERNIZED" VINTAGE TUBE TESTERS GO... THIS PARTICULAR TV-7/U WAS ORIGINALLY REBUILT CALIBRATED IN MR. NELSON'S SHOP AND RETURNED TO THE PREVIOUS OWNER WITH REPORTS. ACCORDING TO THE DOCUMENTATION, THIS UNIT IS A TV-7/U BUT SOMEHOW HAS A TV-7B/U DECAL & OUTER CASE. NOT THAT IT'S A BIG DEAL, BUT JUST FOR FULL DISCLOSURE! WHEN THE UNIT CAME INTO MY POSSESSION, I PERSONALLY BROUGHT IT BACK TO MR. NELSON TO PERFORM THE CHECK-UP AND INSTALL THE DIGITAL DUAL-MODE METER. THIS UNIT HAS SEEN LITTLE REGULAR USAGE SINCE THEN, BUT EVERYTIME I NEEDED IT - IT PERFORMS FLAWLESSLY. THE REASON FOR PARTING WITH IT IS JUST THAT I HAVE DECIDED TO MAKE SOME "PERMANENT" ROOM ON THE BENCH TO SET UP MY METRIX LX119. I CAN FORGO THE OCCASIONAL ONE OR TWICE A YEAR POWERING UP THE TV-7/U. THIS UNIT HAS THE LATEST 'UPDATED' TEST DATABOOK, TEST LEADS. FOR ENHANCED SAFETY, A GROUNDED 3-CONDUCTOR POWER CORD WAS FITTED. 9-PIN & OCTAL TEST SOCKETS ARE FITTED WITH HIGH-QUALITY SOCKET SAVERS. ORIGINAL 9-PIN & 7-PIN PIN-STRAIGHTENING SOCKETS ARE PRESENT. I WELCOME LOCAL PICK-UPS, BUT CASH PAYMENT ONLY PLEASE - UNLESS PRIOR ARRANGEMENTS HAVE BEEN AGREED UPON REGARDING PAYMENT METHOD ACCEPTED. DIRECT CREDIT CARD BILLINGS IS AVAILABLE, WITH THE SAME APPLICABLY STATED SALES TERMS. LOCAL PICK-UPS OR SHIPPING TO CA/AZ DESTINATIONS ARE SUBJECTED TO CA/AZ SALES TAX. ==> VTM-200'S - "ARCDB" ==> STEREOPHILE REVIEW" --> ITEMS ARE FOR SALE AT SEVERAL VENUES AS WELL AS LOCALLY. THUS - AS ALONG AS THERE ARE NO EXPLICIT AND/OR OUTSTANDING EBAY'S BIDS/OFFERS, THESE ITEMS ARE ON A 1ST-COME 1ST-SERVE BASIS. ANY CURVES IN THE PICTURES ARE DUE TO THE DISTORTION IN MY CAMERA'S CLOSE-UP LENS. NO ISSUES WHATSOEVER. ANY QUESTIONS, PLEASE CONTACT ME THROUGH EBAY'S MESSAGE SYSTEM. THANKS. OTHER ITEMS FOR SALE WE CAN BOX/CRATE THESE UNITS UP AND SHIP TO ANY DESTINATION, AS LONG AS THE BUYER PAYS FOR THE SHIPPING AND FULL INSURANCE COSTS. WE USE FEDEX DOMESTIC & INTERNATIONAL SERVICES OR AIR/OCEAN FREIGHT SERVICES FOR ITEMS OVER 150lb. PLUS, WE CAN ALSO USE THE BUYER'S OWN CARRIER (HOWEVER, THIS SHIPMENT WOULD THEN BE F.O.B IN THIS CASE AND WE ARE NOT RESPONSIBLE AFTER THE CARRIER'S PICK-UP). WORLDWIDE SHIPPING. INTERNATIONAL SHIPMENT IS MORE EXPENSIVE SINCE IT IS TIME CONSUMING TO DEAL WITH THE SHIPPING & CUSTOM DETAILS. THESE ITEMS WILL GO VIA FEDEX GROUND FOR THE 48 US CONT. DESTINATIONS. OTHER DOMESTIC & INTERNATIONAL DESTINATIONS ARE HIGHER. ------------------------------------------------------------------------------- -------------------------------------------------------------------------------- -->

Price: 1350 USD

Location: Phoenix, Arizona

End Time: 2025-01-14T21:06:47.000Z

Shipping Cost: 0 USD