If the photograph is clicked, it grows.

HP 423B Crystal Detector Broken
JPY3,000 1 stock
par2035

Superior RF performance
Frequency response:±0.3dB
Maximum SWR:1.15(10MHz-4GHz),1.3(4GHz-12.4GHz)
Low-level sensitivity:>0.5mV/uW
Power handling
Maximum operating input power:200mW
Typical short-term maximum input power(<1minute):1W
Features
Noise:<50uV

5.7mV 0dBm 1GHz
5.5mV 0dBm 4GHz