Only devices with matching device numbers switch into talk and listen mode.
2.
Cleland also heard from representatives of companies that make " biometric " security devices, such as fingerprint matching devices, that could be used in airports.
3.
Matching the impedance of the antenna to the impedance of the feed line can sometimes be accomplished through adjusting the antenna itself, but otherwise is possible using an antenna tuner, an impedance matching device.
4.
These passive ( and active ) impedance-matching devices are optimized for different applications and include baluns, antenna tuners ( sometimes called ATUs or roller-coasters, because of their appearance ), acoustic horns, matching networks, and terminators.
5.
In that case, you can still use the same antenna, you just have to put an impedance matching device between the transmitter and the antenna . talk ) 18 : 10, 10 November 2013 ( UTC)
6.
The physical part of the technology was first specified within DVD Forum, and then a matching device command set was introduced to the Mt Fuji specification ( which eventually was replicated within the UDF file system specification.
7.
Like other electro-acoustic or electric instruments, an electric violin is often patched into a preamplifier, impedance-matching device, and / or a Direct Injection ( DI box ) box before it is routed to the PA system, electronic effects, or the instrument amplifier.
8.
To maximise power transmission for radio frequency power systems the circuits should be " complex conjugate matched " throughout the power chain, from the transmitter output, through the transmission line ( a balanced pair, a coaxial cable, or a waveguide ), to the antenna " system ", which consists of an impedance matching device and the radiating element ( s ).
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