We manufacture many kinds of replacement oscillators aimed at replacing obsolete oscillators, such as OCXO, XO, TCXO, VCTCXO, VCOCXO, Rubidium, etc.. We can perform full characterization of obsolete oscillators and produce replacements that fully match original footprint and electrical characteristics. We already produce replacement oscillators to some of the obsolete OEM oscillators: 03-39558-001, TCO-676H1, OC-260-CAF, 410-0091. To purchase these or to inquire about others, please contact us.