Emanuele Girlando blog
Electronics repair & tweaking
Wednesday, March 19, 2025
An experience with XIAOMI Mi robot (Roborock) vacuum cleaner (model n. SDJQR02RR).
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DISCLAIMER: The information provided here is intended only to share a specific my own experience. Due to the serious risks to people and pr...
Thursday, October 31, 2024
Characterizing an Advantest R3361B Spectrum Analyzer RF Input with a miniVNA in the 1-180MHz range
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As per my knowledge of VNAs this should have been a very easy REFLECTION measurement. According to the results I get, ...it is not. I know:...
2 comments:
Wednesday, April 17, 2024
Kenwood TS-430s: SSB RX with very low AF volume and S-meter stuck at S-0.
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Repair Brief – Kenwood TS-430s – bad SSB RX. DISCLAIMER : the following instructions are provided only as a report of my ...
1 comment:
Tuesday, January 30, 2024
TOWER 5 Transistors Walkie talkies from the 60s - The ones that ignited my radio/electronics hobby.
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Tale of my first transmission : 27.125MHz - CB Channel 14. When I was young (late sixties, first seventies) I got a couple of black TOWER wa...
Monday, November 20, 2023
A DIY bench RF step attenuator with Arduino and Aeroflex-Weinschel step attenuators
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A while ago I made a bargain purchasing a couple of Aeroflex-Weinschel step attenuators (models 150T/11 and 150T/70) for 20EUR each. The ide...
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