B&k 747 Tube Tester, With Manual & Chart, Tests Accurate, Manuals

US $480

Waltham, Massachusetts, United States
Jun 2nd

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B&K 747 Tube Tester, With Manual & Chart, Tests Accurate, Manuals The 747 is a Dynamic Mutual Conductance tester with complete tube test chart and all manuals included at purchase. For example, if you are looking a bushel basket or tube caddy of "pulls" and boxed tubes, you need the 747. The 747 is the most portable tube tester for field tube testing. Using programmed tube sockets 22 through 30 and with adapter almost all of tubes can be tested. Using Octal socket 24, a tube socket adapter and a tube manual, most any tube can be tested, Details are on pages 20 to 23 in the included instruction manual. In its present configuration the 747 will not test 4 pin tubes. Fron the Antiuque Radio forum: "The B&K 747 adapter, a male octal plug, a small box 4, 5, & 6 pin sockets. Wire octal plug to same pin on each socket that pin 1 to pin 1 etc. Use the tester banana jacks P & G for grid cap and for plate cap. Find a 1950's data book RC-15 to RC-17 or use the web. Most 4, 5 and 6-pin tube have an octal electrically identical tube. Like a 78 is a 6K7 octal set the B&K 747 sensitivity control for a 6K7. Set switches 1 to 6 for tube part being connected to. Switches 7 thru 12 and pins that have N/C to the dot. Set switches 13 and 14 to the electrically identical tube from B&K data sheet. Make sure that you read the entire manual." This example is clean. It spent some time in a damp storage are and some of the metal parts show some oxidation. Some of the hard cardboard surfaces have slightly deteriorated (see the surface above faceplate). The tester has a distinct mill dew smell when opened. Three of the plastic machine screw threaded sockets holding the faceplate are broken. The faceplate is held down by the remaining 4 screws. . The tube measurements, using a NOS 6L6, compare closely with an accurate TV-7. This is a very practical and very useful tester you can rely on. PayPal—eBay's service to make fast, easy, and secure payments for your eBay purchases! NOS RCA Tube Under Test- Tests Correctly IMPORTANT - Be sure to read the Terms and Conditions of Sale Hardware Packing - Domestic and Outside US: Item will be wrapped with bubble wrap in two directions and double boxed. Tube Packing - Domestic and Outside US: Individual tubes (boxed or unboxed) will be wrapped with cardboard and bubblewrap and packed in strong cartons and shipped USPS Priority Mail with delivery confirmation. All shipment must be made with delivery confirmation service (tracking number) and insurance - For Example - USPS Priority Mail, UPS or FedEx Ground. All shipments will receive a delivery confirmation e-mail with tracking number upon shipment Shipping is via FedEx Ground, UPS, local pick-up, unless arrangement is made otherwise. Buyer pays shipping and $5 Handling Fee. US BUYERS: Please use PayPal. INTERNATIONAL BUYERS: Please use PayPal. Alternative payment options are available. I reserve the right to file an eBay Non Payment Request, and re-list the item, if the buyer's remittance fails to reach my PayPal account within 48 hours. No payment buyers are inconveniencing other potential buyers. DO NOT PURCHASE IF YOU DO NOT PLAN TO PAY. Outside US Buyers: eBay invoice with ship cost will be generated as soon as possible after purchase for your PayPal payment. Ship cost is based on actual ship cost plus $5 Handling Fee. Seller reserves the right to refuse any bids from buyers with poor feedback. Bidders must use their own account. Use of a friend's account or biding for a friend is not allowed. Bids will be considered an attempt to circumvent the eBay Feedback system. Overseas Buyers: Please do not ask me to state a false value for customs and taxation purposes. Bidder must understand this term before you bid. Please keep in mind when bidding for vintage vacuum tube equipment, this equipment is 35-45 years old and is subject to parts failure similar to a 35-45 year old automobile. The equipment I sell is checked out, repaired and adjusted before shipment and is sold in a best effort operating condition. I cannot be responsible for parts failure after shipment to bidder. Bidder should have a vintage tube equipment repair technician in mind should repairs or fine tuning be required during ownership of the equipment.