This listing is for a New Old Stock Main Oscillator Assembly for the USM-393 Signal Generator, which is the hardened version of the HP 8640B. We understand this will not work in a regular HP 8640B.
This unit comes from the estate of a Ham Radio operator who collected many various Test Equipment over the years.
We have thousands of items to sell from this recently purchased estate.
Excellent New Old Stock Condition
We typically ship within one business day! International buyers are responsible for any customs/duty fees.
Most of the parts we sell are vintage New Old Stock parts. We are have identified fitment information to the best of our knowledge in the description of this listing or the Compatibility Table. It is possible this part fits other vehicles. If you have fitment concerns, please contact us.
We use high quality shipping supplies and biodegradable peanuts to make sure your parts arrive safely.
NOS (New Old Stock) parts are Genuine Factory Original parts.
NORS (New Old Replacement Stock) parts are original vintage aftermarket parts.
NOS and NORS does not necessarily mean the parts are perfect.
Manufacturing technology was not the same as it is today so imperfections should be expected.
Also, these parts may have been in storage for 40-80 years and could be dusty, greasy or have surface rust, spider webs, etc.