1664 kHz — 1.664 MHz

Name: FreqBuddy radio frequency database
License: https://freqbuddy.com/

MF / medium wave. 2 stations listed.

Stations listed on 1664 kHz
Station	Country	Location	Power (kW)	Schedule (UTC)	Language
Isewan Martis x15x45	Japan	Irago	1.000	0000-2400	Japanese
Nagoya Martis x00x30	Japan	Kinjofuto	1.000	0000-2400	Japanese