What is inside: Variable RF attenuator 

That's one well-made attenuator. Thanks for opening it up for us to see.

The company still exist and makes all types of similar rf products. Very beautiful and top quality.👍

Cool! The heavy-duty milled body with dozens of screws is meant to prevent RF from leaking, the attenuator works up to the UHF range. The attenuator came from a 1980s radio telephone test set and its attenuation range goes down to -130dB.

Hi, thanks for the presentation. Let me know the characteristic impedance (50 ohm ?) and the power handling capacity (1 watt max ?) De VU2RZA