Electronics > Repair

JDSU JD745A / GC747a Base Station Analyzer - Repair log

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Qw3rtzuiop:

--- Quote from: HF-Bastler on December 29, 2024, 10:33:00 am ---Did you solve your problem with a new calibration table or replacing the mmic? Which mmic was damaged?

--- End quote ---

Creating a new cal table and replacing a cracked mlcc did the job. There is another thread on this device here: https://www.eevblog.com/forum/testgear/jdsu-j745a-spectrum-analyser-vna-repair-mini-review/

HF-Bastler:
After replacing a rf-switch HMC427ALP3E and some capacitors (+10dB) in the signal-path, and creating a new calibration-table, the frequency-response is much better than before.

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