To become a qualified source for this Electron Tube used in the F-16 A/B AN/APG-66 transmitter, offerors must satisfy multiple requirements including notifying the government, certifying facilities, verifying data, manufacturing per the engineering package, and passing government-approved qualification testing at their own expense. A pre-contract award qualification article must be submitted for evaluation, with successful qualification not guaranteeing a contract award. The estimated cost for testing and evaluation to become qualified is $3,000. The estimated time to complete the qualification effort is 180 days. Waiver criteria may allow sources to bypass some or all of these requirements if they meet specific conditions, such as prior supply to the government or OEM.