The hertz is a unit of frequency, named after Earth scientist Heinrich Rudolf Hertz. One hertz is equal to one cycle per second.
Comparative list of frequency
Megahertz = 1 million hertz
- When the USS Voyager used a microprobe as a subspace communications relay to contact a Romulan scout ship through a micro-wormhole, B'Elanna Torres noted that the phase amplitude of the visual link with the ship was within a megahertz of transporter protocols. (VOY: "Eye of the Needle")
- While manually conducting a lateral scan aboard the disabled USS Defiant (NX-74205), Major Kira noted that the sensors were set at 15 megahertz for their range of five hundred kilometers. (DS9: "For the Uniform")
- Arik Soong had Enterprise adjust it's scanning frequency to 15 megahertz to located the Augments stolen Klingon bird-of-prey. (ENT: "The Augments")
- The frequency modulation for the shields of USS Enterprise (NCC-1701-D), prior to its' destruction in 2371, was 257.4 megahertz. When the Duras sisters discovered this frequency, they adjusted the frequency of their weapons, allowing them to penetrate the Enterprises hull. (Star Trek: Generations)
- George and Gracie were tagged with the radio frequency was 401 megahertz prior to their journey from the Cetacean Institute to their release into the wild. (Star Trek IV: The Voyage Home)
- The frequency in the message transmitted by V'Ger was sent at a rate of one million megahertz and lasted only a millisecond. At that high rate of speed, the message was initially undetected. (Star Trek: The Motion Picture)
- 1 million megahertz is actually equal to 1 terahertz.
Gigahertz = 1 billion hertz
- By increasing the warp plasma 97 gigahertz, Miles O'Brien could increase the velocity of the USS Defiant to warp 9.5. (DS9: "The Sound of Her Voice")
- The subspace communications frequency utilized in Earth Starfleet communications is 384.20 gigahertz. (ENT: "Shadows of P'Jem", "Shockwave, Part I", "Cease Fire")
Terahertz = 1 trillion hertz
- Three hundred twenty-seven systems are known to the Federation in 2267 that use terahertz feeds, none of which are used by Starfleet. (TNG: "The Mind's Eye")
- The forged Federation phaser rifles created by the Romulans, discovered on Krios Prime and used by Kriosian rebels, were charged with a forced pulse, well into the terahertz range. This range is similar with those found in Romulan disruptors, which create an inverted initial output spike, with corresponding discharge crystal and emission beam pattern. (TNG: "The Mind's Eye")
- Geordis VISOR operates frequencies between 1 Hz and 100,000 THz. (TNG: "The Masterpiece Society")
- A gamma scan conducted by the crew of the Enterprise-D in 2368 had a composite frequency of 2.43 * 10^22 hertz. (TNG: "Silicon Avatar")