Zhu Geliang (“諸葛亮”): The Macro Tuner

Dear Friends,

image from www.haifurniture.com

Some of you may be lucky enough to have used an old radio before.
Unlike the digital tuning, tuning into a particular radio station is done manually by turning the tuning nob.
Typically there are 2 tuning nobs :

Rough-tuner   : allows one to search over the spectrum quickly to detect various stations available,
Fine-tuner      : allows one [...]