Looks like a capacitor was installed under the chassis to substitute electrically for a failed original. Note blue tape. This is an old, heavy unit at about 24 lb. Classic HP bench electronics. thanks for looking!

MODEL 655 AUDIO OSCILLATOR - JACKSON ELECTRRICAL INSTRUMENT CO. - BEING SOLD AS IS - WILL NOT SELL TO BUYERS OUTSIDE US

PLEASE READ THIS before you purchase This is a vintage Motorola Audio Oscillator Model S 1067. I do not have the front cover or a power cord. What you see is what you’ll receive. This test set is in very nice shape for its age. It is untested. Will make a good museum display. I will be listing many more vintage Motorola, GE and other brands test sets, mobiles , pagers, portables and pac sets. Please message me if you have any questions Selling AS-IS, no warranty or returns

Do not know anything about these it does light up.

From an audiophile’s estate. Oscillator board for PS Audio power supplies. Untested. Sold as is.

Unused Eimac Oscillator Tube 3CW20000A7 Tube Amplifier Audio EquipmentInternational Buyers - Please Note: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying.