|
B&K-707 Tube tester with operator manual and tube setup manual This is a Dynamic Mutual Conductance tube tester. I have performed a full recondition of this tester and the tester has been calibrated! All controls and switches have been cleaned. The Gm meter has been checked and is in good condition. The case is in fair condition with the normal wear of a typical unit of its age. This is an excellent tester for repair of vintage radios, TV's, audio equipment and other consumer electronic equipment from the past and current tube amplifer as well.e and other audio 1. Tubes can be tested in an incredibly short time since only a minimum number of controls need be set. 2. The Model 707 will provide accurate results because it checks most tubes for their Dynamic Mutual Conductance (Gm) in a true transconductance bridge. Some tubes such as diodes are checked for emission only, since this teat is usually sufficient. Tube types tested in the switch section are tested in the Dyna-Jet Emission circuit. 3. Each tube is automatically checked for shorts and leakage up to 1 megohnL These tests are made between the various elements of the tube and furthermore this test is made before the Gm measurement. 4. Gas, grid emission, or even obscure grid-to-cathode leakage are all disclosed by an exceptionally sensitive grid current check. This test will reveal as little as 2 or 3 microamperes of current in the grid circuit. 5. Each section of a dual-section tube is checked separately. Therefore tubes can be checked and selected for balance between sections. This is convenient for selecting dual section tubes to be used in push-pull circuits. 6. The Model 707 is obsolescence proof as a result of the switch section if this instrument. All of the new type sockets are included in this section of the Model 707, such as 10 pin tubes, compactrons, nuvistors, etc. Provision is also made for simple installation if a new type of socket becomes necessary. One Year limmited warranty is provided! PHOTO BEST DEPICT THE GENERAL PHYSICAL CONDITION OF THE ITEMS. Please look at the photos. All sales are final! I will provide a one year limmited warranty on this tester. PLEASE SEE PHOTO FOR ITEMS BEING SOLD. PLEASE NOTE THAT THE COLOR IN THE PHOTO MAY NOT BE THE A TRUE COLOR DUE TO LIGHTING, COMPUTER AND/OR MONITOR INTERPRETATIONS. (We do not proofread any ads submitted by members) |
june-shields@desmoines-classifieds.com (June Shields) for more information. Your emails will be instantly forwarded to the poster's private address.
