emergency response center

1. центр по проблемам перемещения в аварийных ситуациях
2. управление элементом ресурса
3. регулирование энергопитания и встряхивания осадительных электродов (в электрофильтре)
4. повышенная способность материалов к удержанию радионуклидов
5. координатор откликов на аварийную ситуацию
6. комитет по развитию и реформированию
7. Европейский комитет радиосвязи
8. Европейский комитет по радиосвязи

control n acceleration control line flow restrictor acceleration control unit aerodrome approach control system aerodrome control aerodrome control communication aerodrome controlled zone aerodrome control point aerodrome control radar aerodrome control radio aerodrome control sector aerodrome control service aerodrome control tower aerodrome control tower clearance aerodrome control unit aerodrome traffic control zone aerodynamic control aerodynamic roll control aeronautical information control aileron control system aileron trim tab control system air control aircraft control loss aircraft control margin aircraft control system aircraft control transfer aircraft sanitary control air intake spike control air mixture control airport control tower air traffic control 2. ответчик системы УВД Air Traffic Control Advisory Committee air traffic control area air traffic control boundary air traffic control center air traffic control clearance air-traffic control instruction air traffic control loop air traffic control procedures air traffic control radar air traffic control routing air traffic control service air traffic control system air traffic control unit airways control airworthiness control system altitude control unit amount of controls angle-of-attack control angular position control antitorque control pedal approach control approach control point approach control radar approach control service approach control tower approach control unit area control area control center area flight control assisted control associated crop control operation associated fire control operation assume the control assumption of control message attitude control system (в полете) attitude flight control automatic boost control automatic control automatic exhaust temperature control automatic flight control automatic flight control equipment automatic flight control system automatic gain control automatic level control automatic path control automatic volume control autopilot control autostart control unit backswept boundary layer controlled wing balance the control surface bank control blanketing of controls bleed valve control mechanism bleed valve control unit boundary layer control brake control pedal Budget Control Section (ИКАО) bypass control cabin temperature control system cable control cable control system cargo hatch control switch change-over to manual control check control clearance control collective pitch control collective pitch control lever collective pitch control rod collective pitch control system (несущего винта) constant altitude control control actuator control board control booster control cable control cable fairlead control cable pressure seal control center control characteristic control circuit control column control column elbow control column gaiter control communication control console control desk control force control gear control in transition control lag controlled aerodrome controlled airspace controlled flight controlled route controlled spin control lever controlling beam controlling fuel control linkage control lock control loss control message control mode control of an investigation control panel control pedestal control position indicator control radar control radio station control rod control rod pressure seal control signal control slot (пограничным слоем) control speed Минимально допустимая скорость при сохранении управляемости. controls response control stick (воздушным судном) control stick movement control surface control surface angle control surface chord control surface deflection control surface effectiveness control surface load control surface pilot control surface reversal control system control system load control the aircraft control the pitch control transfer line control unit control valve control wheel control wheel force control wheel grip control wheel horn control wheel rim control zone crop control flight crop control operation customs control cyclic pitch control cyclic pitch control rod cyclic pitch control stick (несущего винта) cyclic pitch control system (несущего винта) data flow control deceleration control unit deflect the control surface (напр. элерон) differential aileron control differential control digital engine control direct control directional control directional control capability directional control loss directional control pedal direct lift control system director control distance control Document Control Unit drift angle control dual control easy-to-operate control electric propeller pitch control electronic engine control system elevator control elevator control stand emergency control engine control system engine throttle control lever environmental control system equipment environment control environment control system (воздушного судна) environment control system noise fail to maintain control fail to relinquish control feedback control system fire control operation flight compartment controls flight control flight control boost system flight control fundamentals flight control gust-lock system (при стоянке воздушного судна) flight control load flight control system flight director system control panel flow control flow control center flow control procedure foot controls fore-aft control rod fuel control panel fuel control unit fuel injection control full-span control surface (напр. крыла) get out of control go out of control ground control ground controlled approach ground control system (полетом) hand control handle the flight controls heading control loop health control helicopter control system hydraulic control hydraulic control boost system hydraulic propeller pitch control immigration control independent control inertial control system integrated control system integrated system of airspace control interphone control box irreversible control jacking control unit jet deviation control system laminar flow control landing control land use control lateral control lateral control rod lateral control spoiler lateral control system (воздушным судном) layout of controls level control longitudinal control longitudinal control rod longitudinal control system (воздушным судном) loss of control loss the control low control area maintain control manipulate the flight controls manual control master control mid air collision control mixture control mixture control assembly mixture control knob mixture control lever noise control noise control technique nonreversible control nozzle control system oceanic area control center oceanic control area oil control ring operating controls operational control overspeed limiting control passport control pedal control pilot on the controls pitch control pitch control lever pitch control system pitch trim control knob positive control zone power augmentation control power-boost control power-boost control system powered control power-operated control power-operated control system pressure control system pressure control unit propeller control unit propeller pitch control propeller pitch control system pull the control column back pull the control stick back push-button control push-pull control system (при помощи тяг) push the control column push the control stick quality control expert radar approach control radar control radar control area radar transfer of control radio control board radio remote control regional control center release of control relinquish control remote control remote control equipment remote control system respond to controls reverser lock control valve reversible control reversible control system rigid control roll control roll control force sensor roll control knob rudder control rudder control system rudder trim tab control system runway controlled runway control van safety control measures speed control area speed control system (полета) spring tab control rod stabilizer control jack stack controlled starting fuel control unit steering-damping control valve stiff control surface movement control surge control tab control system tab control wheel tail rotor control pedal take over the control temperature control temperature control amplifier temporary loss of control terminal control area terminal radar control terminate the control termination of control throttle control throttle control knob throttle control twist grip tie bus control track controlled traffic control traffic control instructions traffic control personnel traffic control regulations transfer of control transfer the control trim tab control turn control knob unassisted control unassisted control system upper area control center upper control area upper level control area warning system control unit weight and balance controlled wind flaps control system windshield heat control unit wing flap control system yaw control

2) контрольный
3) обоснование
4) обосновывать
5) оперативный
6) регулировать
7) регулировочный орган
8) совладать
9) управление
10) управляемость
11) управляющий
12) штурвальный
13) регулировка
14) управлять
15) проверять
16) регулирование
17) инструкция
18) исполнительный
19) контролировать
20) проверка
21) проверочный
22) регулирующий
– absence of control
– air traffic control
– air-traffic control
– analysis is in control
– anticipatory control
– arc control device
– association control
– attenuation control
– attitude control
– automatic control
– autonomous control
– autothrottle control
– bang-bang control
– be in control
– be out of control
– bin control gate
– brightness control
– bucket tip control
– bulge control
– centralized control
– closed-cycle control
– complete control
– context control
– continuous control
– contrast control
– control accuracy
– control action
– control actuator
– control agent
– control air
– control algorithm
– control amplifier
– control and display
– control assembly
– control beam
– control bus
– control button
– control cabinet
– control cable
– control cam
– control center
– control channel
– control character
– control characteristic
– control circuit
– control code
– control column
– control combination
– control computer
– control crank
– control criterion
– control current
– control cylinder
– control data
– control desk
– control electrode
– control electronics
– control element
– control equipment
– control factor
– control flutter
– control force
– control function
– control gate
– control gear
– control graphitization
– control instruction
– control jet
– control joint
– control key
– control knob
– control lag
– control lever
– control limit
– control linkages
– control links
– control loop
– control magnet
– control means
– control mode
– control module
– control motor
– control of airplane
– control office
– control operation
– control panel
– control pedal
– control position
– control problem
– control pulse
– control range
– control reactor
– control register
– control relay
– control response
– control room
– control shaft
– control spin
– control statement
– control stick
– control surface
– control survey
– control switch
– control temperature
– control theory
– control track
– control transistor
– control unit
– control vector
– control voltage
– control weeds
– control winding
– control wiring
– corrosion control
– dash control
– data control
– derivative control
– digital control
– direct control
– distance control
– disturbance-compensating control
– dive-recovery control
– duplicate control
– dust control
– ease of control
– elevator control
– emergency control
– end-point control
– engine control
– environment control
– error control
– error-closing control
– exclusive control
– extension of control
– feed control
– feed-back control
– feedback control
– filament control
– fine control
– fire control
– flight control
– floating control
– flood control
– flow-rate control
– focus control
– frequency control
– front-panel control
– gain control
– ganged control
– geodetic control
– go out of control
– ground control
– gyrorudder control
– hand control
– headwater control
– height control
– hierarchical control
– in-process control
– independent control
– indirect control
– industrial control
– input-output control
– integral control
– interacting control
– intermittent control
– inventory control
– jet control
– job control language
– layout of control
– leather control
– level control
– linearity control
– load control
– local control
– lose control
– loss of control
– manual control
– master control
– meduim-access control
– meduim-access control
– mission control
– multicircuit control
– noise control
– numerical control
– off-line control
– on-line control
– on-off control
– open-loop control
– operating control
– optimal control
– optimization control
– out of control
– pass control
– path control
– path of control
– pedal control
– pest control
– phase control
– phase-lock control
– piano-key control
– plan control
– point of control
– point-to-point control
– power-assisted control
– product control
– program control
– programmed control
– proportional control
– proportional-plus-floating control
– push-button control
– pushbutton control
– quality control
– radio control
– ramp control
– reaction control
– recovery control
– regain control
– register control
– remotability of control
– remote control
– roll control
– rudder control
– run-off control
– sampled-data control
– segregate control
– selectivity control
– self-acting control
– sensitivity control
– servo control
– slide control
– slope control
– statistical control
– steering control
– supervisory control
– take control
– technical control
– temperature control
– throttle control
– tone control
– touch control
– traffic control
– tuning control
– vertical control
– vibration control
– voice-activated control
– volume control

accuracy control character — признак точности

aerodynamic control surface — руль управления аэродинамический

aileron control force — усилие на штурвал от элеронов

automated system control — АСУ

automatic control equipment — аппаратура автоматического управления

automatic flight control — автоуправление полетом

automatic frequency control — частотная АПЧ, автоматическая настройка частоты

automatic gain control — <tech.> регулировка усиления автоматическая

automatic gain control circuit — АРУ

automatic pressure control — автомат давления

automatic remote control — <comput.> телеавтоматика

automatic voltage control — регулирование напряжения автоматическое

bang-bang control action — двухпозиционное регулирование

bang-bang control system — <comput.> система управления релейная

by-pass damper control — газовое регулирование перегрева

cancelling control button — < railways> кнопка отмены

central control board — центральный щит приборов

central control console — пульт управления центральный

central control room — центральная аппаратная

centralized traffic control — < railways> централизация

conditional transfer of control — условная передача управления

control aisle of a substation — коридор управления подстанции

control feed cylinder — загрузочный цилиндр

control ignition timing — регулировать зажигание

control in pitch of airplane — продольное управление самолетом

control point adjustment — настройка точки регулирования, <engin.> задатчик

control power winding — силовая обмотка

control rocket motor — рулевой ракетный двигатель

control system analyzer — анализатор системы регулирования

control tower service — <aeron.> служба диспетчерская

coordinated phosphate control — коррекционная обработка воды

damage control center — пост живучести

data flow control — управление потоком данных

data link control — процедура контроля передачи данных

differential control method — дифференцированный метод контроля

direct digital control — прямое цифровое управление

dispatcher's supervisory control — телеуправление диспетчерское

disturb the control setting — нарушать регулировку

division of technical control — отдел технического контроля

exclusive data control — монопольное управление данными

feed control valve — питательный клапан

final control element — регулирующий орган

fire control computer — счетно-решающее устройство для управления артиллерийским огнем

fire control director — прибор управления артиллерийским огнем

floating control mode — <comput.> способ регулирования астатический

grid control unit — блок сеточного управления

horizontal control point — плановая опорная точка

horizontal hold control — регулятор частоты строк

infinitely fast control — безынерционное управление

integral control mode — астатический закон регулирования

intermittent gain control — < radio> регулировка усиления временная

lateral control of airplane — поперечное управление самолетом

lower control limit — нижний контрольный пробел

manual gain control — ручная регулировка усиления

master control board — щит управления главный

master switch control — контроллерное управление

message control program — программа управления сообщениями

microprocessor control system — микропроцессорная система управления

multipath control unit — групповой контроллер

operated by remote control — телеуправляемый

pitch control mechanism — механизм изменения шага

plotter control tape — лента управления графопостроителем

pressure control instrument — <tech.> маностат

proportional control factor — <comput.> коэффициент пропорционального регулирования

proportional control mode — статический закон регулирования

quality control method — метод контроля качества

range finder control — <geod.> метод дальномерно-базисный

reactance control circuit — управитель частоты

reactor control system — <engin.> система управления и защиты

release exclusive control — снять монопольное управление

remote control interlocking — < railways> телецентрализация, централизация дистанционная

river control structure — <geol.> сооружение выправительное

route control interlocking — маршрутная централизация

screwdriver slot of control — регулировочный шлиц

servo control unit — <engin.> гидроусилитель

setting on points of control — метод продолжения

shared-path control unit — разделенный контроллер

single-path control unit — индивидуальный контроллер

spotting gain control — доводка усиления

spray-type superheat control — впрысковое регулирование перегрева

statistical process control — управление статистическое

supervisory control system — <comput.> автодиспетчер

table control ram — цилиндр управления жаткой

temperature control device — терморегулятор

temperature control system — система терморегулирования

thermostatic temperature control — ключевое термостатирование

thrust vector control — управление вектором тяги

twin wire control — двухпроводное управление

vertical control point — высотная опорная точка

vertical hold control — регулировка кадровой синхронизации

volume range control — регулирование динамического диапазона

- 2-handed controls
- 32-bit CPU control
- acceptance control
- access control
- acknowledge control
- active process control
- adaptable control
- adaptive constraint control
- adaptive control for optimization
- adaptive control
- adaptive feed rate control
- adaptive quality control
- adjustable feed control
- adjustable rotary control
- adjustable speed control
- adjusting control
- adjustment control
- AI control
- air logic control
- analog data distribution and control
- analogical control
- analytical control
- application control
- arrows-on-curves control
- autodepth control
- autofeed control
- automated control of a document management system
- automated technical control
- automatic backlash control
- automatic control
- automatic editing control
- automatic gain control
- automatic gripper control
- automatic level control
- automatic process closed loop control
- automatic remote control
- automatic sensitivity control
- automatic sequence control
- automatic speed control
- automatic stability controls
- auxiliaries control
- balanced controls
- band width control
- bang-bang control
- bang-bang-off control
- basic CNC control
- batch control
- bibliographic control
- bin level control
- boost control
- built-in control
- button control
- cam control
- cam throttle control
- camshaft control
- carriage control
- Cartesian path control
- Cartesian space control
- cascade control
- C-axis spindle control
- cell control
- center control
- central control
- central supervisory control
- centralized control
- centralized electronic control
- central-station control
- changeover control
- chip control
- circumferential register control
- close control
- closed cycle control
- closed loop control
- closed loop machine control
- closed loop manual control
- closed loop numerical control
- closed loop position control
- clutch control
- CNC control
- CNC indexer control
- CNC programmable control
- CNC symbolic conversational control
- CNC/CRT control
- CNC/MDI control
- coarse control
- coded current control
- coded current remote control
- color control
- combination control
- command-line control
- compensatory control
- composition control
- compound control
- computed-current control
- computed-torque control
- computer control
- computer numerical control
- computer process control
- computer-aided measurement and control
- computer-integrated manufacturing control
- computerized control
- computerized numerical control
- computerized process control
- constant surface speed control
- constant value control
- contactless control
- contact-sensing control
- contamination control
- continuous control
- continuous path control
- continuous process control
- contour profile control
- contouring control
- conventional hardware control
- conventional numerical control
- conventional tape control
- convergent control
- conversational control
- conversational MDI control
- coordinate positioning control
- coordinate programmable control
- copymill control
- counter control
- crossed controls
- current control
- cycle control
- dash control
- data link control
- data storage control
- deadman's handle controls
- depth control
- derivative control
- dial-in control
- differential control
- differential gaging control
- differential gain control
- differential temperature control
- digital brushless servo control
- digital control
- digital position control
- digital readout controls
- dimensional control
- direct computer control
- direct control
- direct digital control
- direct numerical control
- direction control
- directional control
- dirt control
- discontinuous control
- discrete control
- discrete event control
- discrete logic controls
- dispatching control
- displacement control
- distance control
- distant control
- distributed control
- distributed numerical control
- distributed zone control
- distribution control
- dog control
- drum control
- dual control
- dual-mode control
- duplex control
- dust control
- dynamic control
- eccentric control
- edge position control
- EDP control
- electrical control
- electrofluidic control
- electromagnetic control
- electronic control
- electronic level control
- electronic speed control
- electronic swivel control
- elevating control
- emergency control
- end-point control
- engineering change control
- engineering control
- entity control
- environmental control
- error control
- error plus error-rate control
- error-free control
- external beam control
- factory-floor control
- false control
- feed control
- feed drive controls
- feedback control
- feed-forward control
- field control
- fine control
- finger-tip control
- firm-wired numerical control
- fixed control
- fixed-feature control
- fixture-and-tool control
- flexible-body control
- floating control
- flow control
- fluid flow control
- follow-up control
- foot pedal control
- force adaptive control
- forecasting compensatory control
- fork control
- four quadrant control
- freely programmable CNC control
- frequency control
- FROG control
- full computer control
- full order control
- full spindle control
- gage measurement control
- gain control
- ganged control
- gap control
- gear control
- generative numerical control
- generic path control
- geometric adaptive control
- graphic numerical control
- group control
- grouped control
- guidance control
- hairbreath control
- hand control
- hand feed control
- hand wheel control
- hand-held controls
- handle-type control
- hand-operated controls
- hardened computer control
- hardwared control
- hardwared numerical control
- heating control
- heterarchical control
- hierarchical control
- high-integrity control
- high-level robot control
- high-low control
- high-low level control
- high-technology control
- horizontal directional control
- humidity control
- hybrid control
- hydraulic control
- I/O control
- immediate postprocess control
- inching control
- in-cycle control
- independent control
- indexer control
- indirect control
- individual control
- industrial processing control
- industrial-style controls
- infinite control
- infinite speed control
- in-process control
- in-process size control
- in-process size diameters control
- input/output control
- integral CNC control
- integral control
- integrated control
- intelligent control
- interacting control
- interconnected controls
- interlinking control
- inventory control
- job control
- jogging control
- joint control
- joystick control
- just-in-time control
- language-based control
- laser health hazards control
- latching control
- lead control
- learning control
- lever control
- lever-operated control
- line motion control
- linear control
- linear path control
- linearity control
- load control
- load-frequency control
- local control
- local-area control
- logic control
- lubricating oil level control
- machine control
- machine programming control
- machine shop control
- macro control
- magnetic control
- magnetic tape control
- main computer control
- malfunction control
- management control
- manual control
- manual data input control
- manual stop control
- manually actuatable controls
- manufacturing change control
- manufacturing control
- master control
- material flow control
- MDI control
- measured response control
- mechanical control
- memory NC control
- memory-type control
- metering control
- metrological control of production field
- microbased control
- microcomputer CNC control
- microcomputer numerical control
- microcomputer-based sequence control
- microprocessor control
- microprocessor numerical control
- microprogrammed control
- microprogramming control
- milling control
- model reference adaptive control
- model-based control
- moisture control
- motion control
- motor control
- motor speed control
- mouse-driven control
- movable control
- multicircuit control
- multidiameter control
- multilevel control
- multimachine tool control
- multiple control
- multiple-processor control
- multiposition control
- multistep control
- multivariable control
- narrow-band proportional control
- navigation control
- NC control
- neural network adaptive control
- noise control
- noncorresponding control
- noninteracting control
- noninterfacing control
- nonreversable control
- nonsimultaneous control
- numerical contouring control
- numerical control
- numerical program control
- odd control
- off-line control
- oligarchical control
- on-board control
- one-axis point-to-point control
- one-dimensional point-to-point control
- on-line control
- on-off control
- open loop control
- open loop manual control
- open loop numerical control
- open-architecture control
- operating control
- operational control
- operator control
- optical pattern tracing control
- optimal control
- optimalizing control
- optimizing control
- oral numerical control
- organoleptic control
- overall control
- overheat control
- override control
- p. b. control
- palm control
- parameter adaptive control
- parameter adjustment control
- partial d.o.f. control
- path control
- pattern control
- pattern tracing control
- PC control
- PC-based control
- peg board control
- pendant control
- pendant-actuated control
- pendant-mounted control
- performance control
- photoelectric control
- physical alignment control
- PIC control
- PID control
- plugboard control
- plug-in control
- pneumatic control
- point-to-point control
- pose-to-pose control
- position/contouring numerical control
- position/force control
- positional control
- positioning control
- positive control
- postprocess quality control
- power adaptive control
- power control
- power feed control
- power-assisted control
- powered control
- power-operated control
- precision control
- predictor control
- preselective control
- preset control
- presetting control
- pressbutton control
- pressure control
- preview control
- process control
- process quality control
- production activity control
- production control
- production result control
- programmable adaptive control
- programmable cam control
- programmable control
- programmable logic adaptive control
- programmable logic control
- programmable machine control
- programmable microprocessor control
- programmable numerical control
- programmable sequence control
- proportional plus derivative control
- proportional plus floating control
- proportional plus integral control
- prototype control
- pulse control
- pulse duration control
- punched-tape control
- purpose-built control
- pushbutton control
- quality control
- radio remote control
- radium control
- rail-elevating control
- ram stroke control
- ram-positioning control
- rapid-traverse controls for the heads
- rate control
- ratio control
- reactive control
- real-time control
- reduced-order control
- register control
- registration control
- relay control
- relay-contactor control
- remote control
- remote program control
- remote switching control
- remote valve control
- remote-dispatch control
- resistance control
- resolved motion rate control
- retarded control
- reversal control
- revolution control
- rigid-body control
- robot control
- robot perimeter control
- robot teach control
- rod control
- safety control
- sampled-data control
- sampling control
- schedule control
- SCR's control
- second derivative control
- selective control
- selectivity control
- self-acting control
- self-adaptive control
- self-adjusting control
- self-aligning control
- self-operated control
- self-optimizing control
- self-programming microprocessor control
- semi-automatic control
- sensitivity control
- sensor-based control
- sequence control
- sequence-type control
- sequential control
- series-parallel control
- servo control
- servo speed control
- servomotor control
- servo-operated control
- set value control
- shaft speed control
- shape control
- shift control
- shop control
- shower and high-pressure oil temperature control
- shut off control
- sight control
- sign control
- single variable control
- single-flank control
- single-lever control
- size control
- slide control
- smooth control
- software-based NC control
- softwared numerical control
- solid-state logic control
- space-follow-up control
- speed control
- stabilizing control
- stable control
- standalone control
- start controls
- static control
- station control
- statistical quality control
- steering control
- step-by-step control
- stepless control
- stepped control
- stick control
- stock control
- stop controls
- stop-point control
- storage assignment control
- straight cut control
- straight line control
- stroke control
- stroke length control
- supervisor production control
- supervisory control
- swarf control
- switch control
- symbolic control
- synchronous data link control
- table control
- tap-depth controls
- tape control
- tape loop control
- teach controls
- temperature control
- temperature-humidity air control
- template control
- tension control
- test control
- thermal control
- thermostatic control
- three-axis contouring control
- three-axis point-to-point control
- three-axis tape control
- three-mode control
- three-position control
- throttle control
- thumbwheel control
- time control
- time cycle control
- time optimal control
- time variable control
- time-critical control
- time-proportional control
- timing control
- token-passing access control
- tool life control
- tool run-time control
- torque control
- total quality control
- touch-panel NC control
- touch-screen control
- tracer control
- tracer numerical control
- trajectory control
- triac control
- trip-dog control
- TRS/rate control
- tuning control
- turnstile control
- two-axis contouring control
- two-axis point-to-point control
- two-dimension control
- two-hand controls
- two-position control
- two-position differential gap control
- two-step control
- undamped control
- user-adjustable override controls
- user-programmable NC control
- variable flow control
- variable speed control
- variety control
- varying voltage control
- velocity-based look-ahead control
- vise control
- vision responsive control
- visual control
- vocabulary control
- vocal CNC control
- vocal numerical control
- voltage control
- warehouse control
- washdown control
- water-supply control
- welding control
- wheel control
- wide-band control
- zero set control
- zoned track control

frequency n airport tower frequency allocation of frequencies allotment of frequencies alternate frequency assigned frequency band audio frequency bass frequency blade passing frequency calling frequency change the frequency convert the frequency distress frequency Doppler frequency shift (при движении воздушного судна) emergency frequency en-route frequency extremely high frequency forced oscillation frequency frequencies assignment frequency analyser frequency band frequency changeover frequency changeover procedure frequency converter Frequency Coordinating Body frequency deployment frequency deviation frequency distortion correction frequency distribution frequency diversity frequency drift frequency filter frequency meter frequency of operations frequency range frequency response frequency spacing frequency spectrum frequency weighting curve geometric mean frequency guard the frequency high frequency high frequency propagation international distress frequency international frequency monitoring International Frequency Registration Board interrogation frequency listening frequency monitor the frequency natural frequency octave-band center frequency overall frequency radio frequency channel receiving frequency reference frequency resonant frequency scan frequency scheduled maintenance frequency secondary frequency select the frequency side frequency standby frequency transmit on frequency of very high frequency direction finder vibration frequency watch frequency working frequency