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The HP 86222B RF Plug-In is used with the HP 8620C Sweep Oscillator and generates a RF signal in the range 10 MHz to 2.4GHz. This was bought on eBay together with a 8620C. In 1975 this cost $3,900 with internal leveling and markers included. The Operating and Service Manual was download.

Front Panel with 1, 10 & 50MHz Markers
Rear Panel view
Top view with extra A4 Assembly (Yellow Handles)
Bottom view
November 2019

The B version is an enhancement on the HP 86222A RF Plug-In as it has 1MHz, 10MHz, 50MHz and External Markers. Cleaned up and carried out adjustments ok. Have the correct scale for the 8620C. Need to complete performance tests.