Ones getting passes

Usage examples of receivers.

The antennas would pick up the preprogrammed signals, and the onboard receivers would automatically transmit them down to Sigint analysts in South Vietnam, who could then retransmit them via satellite in near real time right to NSA.

A twelve-foot-long pod containing even more antennas and receivers was occasionally suspended from the right side of the aircraft.

As the floe migrated through the Arctic Sea, like a ghost ship adrift and lost, the polar spies used advanced acoustical equipment to detect hostile subs, while special antennas and receivers eavesdropped on the other side.

Explorer, the system involved preprogrammed computers and receivers that would quickly scan for targeted and unusual frequencies carrying voice and coded communications.

I shall only add, that the givers are generally of the former sentiment, and the receivers are almost universally inclined to the latter.

Squeezed together in the small space, all facing aft, the electronic spies were surrounded by scopes, receivers, analyzers, recorders, and controls.

It consisted of sophisticated electronic receivers and large-capacity recorders that used Mylar tape.

Where once cases of lima beans, truck axles, plumbing pipes, and other cargo had been stored, the earphone-clad intercept operators now sat in front of racks of receivers and reel-to-reel tape recorders.

Inside the darkened room, crammed with receivers, six-foot-tall 3M tape recorders, and an assortment of eerie green screens, technicians hovered around the flickering scope of the WLR-l X-band receiver.

Attached to it were very sensitive Elint receivers tuned to the Tall King frequency.

Gradually the tunnels were made livable, lighting was installed, SP-600 high-frequency receivers were brought in, guards were assigned, other buildings were built or restored.

But to snare short-range signals, such as walkie-talkie and coastal communications, the antennas and receivers would have to get close to the action.

Sitting in front of racks of receivers in the cramped Sigint van, which had received a new coat of gray paint a few days earlier to make it look like a normal part of the ship, the intercept operators worked twelve hours on and twelve hours off.

Rather than having intercept operators sit in front of row after row of receivers, spinning dials to find enemy voices, now the agency could do much of its eavesdropping by computer.

There, in what is known as the live room, the electronic environment of target cities is re-created in order to test which antennas and receivers would be best for covert interception.