Wiktionary
n. A facility established to monitor radio and microwave signals and analyse their content to secure information and intelligence for use by the security and diplomatic community and others.
Usage examples of "listening post".
By the time it was over, enemy soldiers were stacked five deep around the listening post.
In fact, none of us would have seen her at all if she hadn't paused to flare that listening post.
But there were houses and factories below him, and if they had a listening post down there .
A company of fourteen Saudi tanks was now arrayed between the listening post and the berm.
We had to get these two Marines from [the naval listening post at] Kamiseya who, they knew about ten words of Korean [Hongul] between the two of them.
I left the tunnel zone to inspect the listening post to right and rear of the Bug area, post twelve.
Meanwhile, Chief Davis launched a second blast from his listening post in Portland, where he had gone to vent his wisdom at the American Legion convention.
The strategic base at Incirlik had been activated in 1954 and served all through the Cold War as a listening post as well as a site well suited for the launch and recovery of NATO surveillance and reconnaissance flights.
But the president and the DCI had insisted that if a serious Israeli-Palestinian peace process were to ever really get under way, they'd need a far better ground operation and listening post than they'd had up until then.
Teleprintered orders had to be sent to all the duty officers of every Hut 8 listening post - from Thurso, clinging to the cliffs on the northernmost tip of Scotland, right down to St Erth, near Land's End.