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B&K Dyna-Quik Tube & Transistor Tester
February 1958 Radio & TV News

February 1958 Radio & TV News
February 1958 Radio & TV News Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio & Television News, published 1919-1959. All copyrights hereby acknowledged.

Way back in the 1980s while working at Westinghouse Oceanic Davison in Annapolis, Maryland, an engineer who knew I had recently obtained a 1941 Crosley Model 03CB console style radio generously gave me his B&K Dyna-Quik Model 650 Vacuum Tube Tester. It is a very comprehensive portable tester used by many professional radio and television servicemen. My tester also had the Model 510 Accessory Socket Panel that added an ability to test 50% more tube types. One indication that it is one of the later model tube testers is the inclusion of a transistor testing socket. Unlike testing vacuum tubes, all of which plugged into sockets to make them easily replaceable, testing a transistor or solid state diode required unsoldering or clipping the device out of the circuit and then soldering back in either the verified still good device or a replacement. It was one of the reasons electronics servicing people eschewed the adoption of semiconductors. That, and a lot of money was made by the sales of replacement tubes, with a typical profit of a dollar or so per tube. Note the advertisement claims selling one additional tube per service call, five times per day would pay for the tester in a few weeks. Doing the math, that's $1 profit/tube 5 tubes/day x 5 days/week = $25 profit/week. At $170 for the Dyna-Quik Model 650 Tube Tester, it works out to about seven weeks - not a bad return on investment (ROI).

B & K Dyna-Quik Tube & Transistor Tester

B&K Dyna-Quik Tube & Transistor Tester, February 1958 Radio & TV News - RF CafeCut Testing Time in Half-

Double Tube Sales


Makes Money for Servicemen Everywhere

New Model 650

Fastest, Most Complete, Portable Dynamic Mutual Conductance Tube & Transistor Tester

Checks over 99% of the tubes most widely used in television receivers, plus popular home and portable radio tubes. Tests over 500 tube types. lists over 125 tube types, with settings, on socket panels for maximum operating speed. Complete listing in fast telephone-index type selector. Includes 16 spare sockets and sufficient filament voltages for future new tube types. Tests each section of multiple tubes separately for Gm - Shorts - Grid Emission - Gas Content - and life. Provides instantaneous Heater Continuity check. Shows tube condition on "Good-Bad" scale and in micro mhos. Special bridge assures automatic line compensation. No multiple switching - No roll chart. Includes pin straighteners. Transistor Tester checks junction, point contact and barrier transistors, germanium and silicon diodes, selenium and silicon rectifiers. Net, $169.95

Famous Model 500 Money-Making Portable Dynamic Mutual Conductance Tube Tester

Servicemen say: "Best tube tester I've ever owned for speed and dependability." "Makes money. Paid for itself several times. Really indispensable." "Have two ... one for the shop and one for house calls." "Adds income and saves unprofitable call-backs." That is why thousands of the Model 500 are now in profitable use all over the nation. Tests tubes for Shorts, Grid Emission, Gas Content, leakage, and Dynamic Mutual Conductance - in a matter of seconds. Life Test detects tubes with short life expectancy. Shows tube condition on "Good-Bad" scale and in micro mhos. One switch tests everything. No multiple switching-No roll chart. Special bridge maintains automatic line compensation. 7-pin and 9-pin straighteners. Net, $109.95


New Model 510 Accessory Socket Panel

Adds over 50% more sockets to the B&K Model 500 Dyna-Quik. Enables you to quick-check many more tube types, old and new. Fits inside the cover of the Model 500. The Model 510 Accessory Socket Panel comes completely wired, ready to install and connect. Net, $29.95

• Each Dyna-Quik Tube Tester completely tests each tube in seconds

• Eliminates substitution testing

• Shows customer true condition and life expectancy of tubes

• Sells more tubes right on-the-spot

• Cuts servicing time, wins customer confidence

• Saves costly call-backs, brings more profit

One extra tube sale on each of 5 calls a day pays for the Dyna-Quik in a few weeks.



Posted March 12, 2020

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