HF radio propagation
type: Concept
alternative label: high-frequency radio propagation
alternative label: انتشار اردیویی بسامدبالا @fa
broader: radiowave propagation
preferred label: انتشار رادیویی اچ.اف @fa
related: VHF radio propagation
related: HF antenna

VHF radio propagation
type: Concept
preferred label: انتشار رادیویی وی.اچ.اف @fa
related: HF radio propagation

radiowave propagation
type: Concept
narrower: HF radio propagation
preferred label: انتشار موج رادیویی @fa

HF antenna
type: Concept
preferred label: آنتن اچ.اف @fa
related: HF radio propagation