Vintage SIGNAL CORPS I - 177 DYNAMIC MUTUAL CONDUCTANCE Tube Tester I - 177
Item History & Price
| Reference Number: Avaluer:520699 | Model: I-177 |
| MPN: I-177 | Country/Region of Manufacture: United States |
| Brand: Signal CORPS | UPC: Does not apply |
The I-177 will test all the consumer and military (except the larger transmitting types) tubes from the 1920's to around the mid 1960's with the exception of the 9 pin miniature based tubes (such as a 12AX7). It will not test the newer TV types that were introduced in the late 1960's & '70's like compactrons etc.The MX-949/U adaptor is needed to test the 9 pin and some 7 pin miniature tubes. I do not have the adaptor or know of a source. However, such an adaptor ca...n easily be built by a technical person with soldering skills, some basic shop tools and common supplies (such as tube sockets, wire etc. and a simple chassis box).
