Sunday Morning in the Lab

RF Curiosities
Francesco Lorenzi | IU3UHF

Check out also my academic blog on lorenzifrancesco [at] github [at] io

Thanks to QSL.net!

Welcome to my page of vintage electronics, RF equipment, and laboratory curiosities. Each Sunday morning brings new discoveries from the electronics workbench - from classic telecommunications equipment to semiconductor archaeology. These articles document interesting pieces of technology that tell the story of our electronic heritage.

Perfect reading material for the curious ham, electronics enthusiast, or anyone interested in the evolution of technology.

Last Updated: July 2025
The Superfone Cordless Telephone CT-505
A fascinating piece of vintage radio technology representing early consumer wireless communication. This VHF cordless telephone demonstrates the engineering principles that led to modern cellular technology.
Vintage Telecommunications | VHF Technology | Consumer Electronics
An interesting LNB
An look at satellite communication technology featuring a dual-input LNB with "exotic" DRO (Dielectric Resonator Oscillator) design. Perfect example of sophisticated microwave engineering in consumer equipment.
Satellite Communications | Microwave Engineering | DRO Technology
Microscopies of devices
A microscopic view revealing the inner working of some devices. From classic semiconductor die showing logic gate transistors to LCD pigmented screen, to a mysterious piece of thermoionic equipment. Can you guess what it is?
Display Technology | Microscopy | Materials Science