EICO Model 667 Dynamic Conductance Tube & Transistor Tester – Working

Nice example of the highly regarded EICO Model 667, one of EICO's more advanced and versatile vintage tube testers.

This tester has been powered up and functionally tested. I tested several known tubes and the readings came in approximately where expected. The meter operates properly and the tester is functioning well enough for use as it sits. These tubes I used for testing and for a few photos are not included. Their mine :)

I have not professionally calibrated or electronically restored the tester, so I am not representing it as laboratory-calibrated. For someone wanting maximum accuracy, it could certainly be serviced and calibrated. However, based on my testing, it is presently producing reasonable results and can certainly be used as-is.

One of the major advantages of the EICO 667 is the unusually broad selection of tube sockets. According to EICO's documentation, the 667 accommodates:

5-pin Nuvistor
7-pin Nuvistor
7-pin miniature
9-pin miniature
10-pin miniature
Novar
12-pin Compactron
Octal
Loctal
5/6/7-pin in-line subminiature
8-pin circular subminiature
Plus a transistor socket for testing NPN and PNP transistors

It can therefore handle a very broad range of receiving tubes, including many of the later tube types that earlier testers cannot accommodate. EICO also specified the 667 for testing many special-purpose and small transmitting tubes, voltage regulators, cold-cathode rectifiers, electron-ray indicators and ballast tubes when appropriate test data is available.

The built-in roll chart operates and advances properly. The plastic roll-chart windows have yellowed with age, as shown in the photographs. The information can still be used, but I would recommend downloading and printing one of the readily available EICO 667 tube-data/setup charts. This also makes finding settings much quicker than scrolling through the original chart. The BAMA archive has both the EICO 667 instruction manual and Master Setting Chart available online.

Cosmetically, the tester is nice and clean for its age. The aluminum control panel presents well. The steel carrying case has normal age-related scratches, marks, oxidation and wear, all shown in the photographs. The handle, latches and hinged cover are present. The original power cord is stored inside the cover.

Included: EICO 667 tester with carrying case and built-in roll chart only.

No printed manual, paperwork, external charts, tubes or other accessories are included.

Please examine all photographs carefully for the exact cosmetic condition and contents.

This is an excellent vintage tester for the tube collector, radio/audio technician, repair bench or enthusiast who wants a tester capable of handling everything from classic octal and miniature tubes through Nuvistors, Novars and 12-pin Compactrons.

Tested and working, but sold as vintage electronic test equipment and not represented as recently serviced or laboratory calibrated.

Brand	EICO
Model	EICO 667
MPN	667
Country of Origin	United States

EICO 667 Dynamic Conductance Tube Tester WORKING Compactron Nuvistor Novar

Specifications