(LEAD) N. Korea appears to test propaganda loudspeakers along border

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North Korea conducted a test broadcast of its propaganda loudspeakers along the inter-Korean border on Thursday, following a warning from Kim Yo-jong about the readiness of such broadcasts. Residents in Paju reported hearing sounds resembling ghostly wails and animal cries, with the volume being relatively low but audible. This test suggests that full-scale activation of anti-South propaganda loudspeakers may be imminent, despite South Korea's military claiming no detection along front-line units.