HP 70902A IF section, a part of HP 70K modular spectrum analyzer. Btw this is a defective module, don't disassemble good module, doing so will cause the filters lose its calibration.
Monogourd
@monogourd.bsky.social
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Callsign BI4LBK. 收集/拆解/修复各种电子测量仪器。 Welcome to the EE_Archeology blog: 7400.me
