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Continuous phase-frequency-shift keying - Continuous phase-frequency-shift keying (CPFSK) is a commonly-used variation of frequency-shift keying (FSK), which is itself a special case of analog frequency modulation. FSK is a method of modulating digital data onto a sinusoidal carrier wave, encoding the information present in the data to variations in the carrier's instantaneous frequency ...
Frequency reference - A frequency reference is an instrument used for providing a stable frequency of some kind. There are different sorts of frequency references, acoustic ones such as tuning forks but also electrical ones that emit a signal of a certain frequency (a frequency standard).
Center frequency - The center frequency f0 (resonant frequency) is the geometric mean between the lower cutoff frequency f1 and the upper cutoff frequency f2 of a frequency band. See also: Band-pass filter.
Intermediate frequency - An intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. It is the beat frequency between the signal and the local oscillator in a radio detection system.
With the Rule Astigmatism - ... the rule astigmatism. 'Cornea' - 'Cornea' Durasoft 3 Optifit Toric Colorblends Contacts Astigmatism is a condition where the ... cornea is irregularly shaped causing distorted vision. A toric lens is specially shaped 'cornea' and designed to ... the eye to correct this vision problem. This toric lens has thin zones which minimi FOR ...
Against the Rule Astigmatism - ... the rule astigmatism. 'Cornea' - 'Cornea' Durasoft 3 Optifit Toric Colorblends Contacts Astigmatism is a condition where the ... cornea is irregularly shaped causing distorted vision. A toric lens is specially shaped 'cornea' and designed to ... the eye to correct this vision problem. This toric lens has thin zones which minimi FOR ...
With the Rule Astigmatism - ... the rule astigmatism. 'Cornea' - 'Cornea' Durasoft 3 Optifit Toric Colorblends Contacts Astigmatism is a condition where the ... cornea is irregularly shaped causing distorted vision. A toric lens is specially shaped 'cornea' and designed to ... the eye to correct this vision problem. This toric lens has thin zones which minimi FOR ...
Against the Rule Astigmatism - ... the rule astigmatism. 'Cornea' - 'Cornea' Durasoft 3 Optifit Toric Colorblends Contacts Astigmatism is a condition where the ... cornea is irregularly shaped causing distorted vision. A toric lens is specially shaped 'cornea' and designed to ... the eye to correct this vision problem. This toric lens has thin zones which minimi FOR ...
Shure - ... hotel - Boutique hotel is a term originating ... Multifocal Toric Contact Lens - ... frequency with a high degree of accuracy and precision. Frequency Contact Lenses Prices - Contact Lenses Frequency Contact ...
Zeal Optics - ... networks that utilize optical amplifiers Modulation measurements via frequency and time domain analyses The book's unprecedented ... networks that utilize optical amplifiers Modulation measurements via frequency and time domain analyses The book's unprecedented ... the optical domain. Several of zeal optics. Proclear Toric Lens - ... point, a focus free lens relies ...
Uniden 250-Channel Programmable Scanner w/ Pre-Programmed Highway Patrol Frequencies : BearTracker Warning System with 800 MHz TrunkTracker III Base is a great way to stay informed on your favorite NASCAR race 250 User Programmable Memories let you quickly store interesting frequencies for rapid recall Frequency Coverage (BCT8) includes the most interesting "action" bands where you can hear police, ambulance, fire, amateur radio, public utilities, weather, and more. 25-54,108-174,400-512,806-956 (excluding cellular) BearTracker Warning System alerts you to activity on Highway Patrol link frequencies to let you know if there is activity within about 3 miles of your location Preprogrammed Service Search makes finding interesting active frequencies even easier Preprogrammed Highway Patrol Frequencies by State helps you to quickly find frequencies likely to be active wherever you are Search Lockouts lets you lock out frequencies that have continuous or uninteresting communications so that searching is faster Backlit LCD screen 100 channels/second Scan Speed (max.)
Klipsch Synergy F-1 Floorstanding Loudspeaker, Single : Exclusive 90?60 Tractix horn technology delivers a dynamic, three-dimensional soundstage for the most engaging entertainment experiences Aluminum diaphragm tweeter reproduces precise high frequencies with extension to 23kHz Features a custom, sculpted port that is located on the front baffle near the floor for intense low-frequency extension Matches all Synergy series products in materials, technology, styling, and performance Powerful magnet structures provide high efficiency and low distortion High-definition crossover network increases power handling and articulation from true-to-life performance Internally braced enclosure reduces resonance and improves musicality Large flared floor port delivers deep bass response you can hear and feel Frequency response: 38Hz to 23kHz, +/-3dB Power handling: 100 watts (400 watts peak) Sensitivity: 93dB @ 2.83 volts/1 meter Nominal impedance: 8 ohms Crossover frequency: 2100Hz Magnetically shielded drivers eliminate video interference Tweeter: 1" (2.5cm) aluminum dome High-frequency horn: 5" (12.7cm) 90?60 Tractrix Woofer: 6.5" (16.5cm), magneti...
Califone Transmitter : CL1111: Ships Via Small Parcel Ground Wireless headphone system technology puts a premium on wireless learning. Califone's monaural learning system allows an infinite number of headphones to meet the specialized needs of group instruction. Students can learn language, improve math, reading and speaking skills at differentiated learning rates. Just plug any multimedia source into the VHF/FM transmitter, turn on the headphones and you're wireless! Features: Differing signals allows four separate groups to listen at the same time in the same room without any interference Mic input on the transmitter allows the instructor to communicate directly with students, covering at least 100' Audio input from any multimedia, 1/4'' mic input for voice-over function and 1/4'' audio (mono or stereo input) jack Power on LED indicator 12 Volt AC power supply Charging lead for up to 8 headphones COLOR CODE: Yellow - frequency: 72.100 MHz Blue - frequency: 72.500 MHz Green - frequency: 72.900 MHz Red - frequency: 74.700 MHz Please note that a minimum order of $40 applies to all Califone products.
Califone Wireless Headphone : CL1112: Ships Via Small Parcel Ground Wireless headphone system technology puts a premium on wireless learning. Califone's monaural learning system allows an infinite number of headphones to meet the specialized needs of group instruction. Students can learn language, improve math, reading and speaking skills at differentiated learning rates. Just plug any multimedia source into the VHF/FM transmitter, turn on the headphones and you're wireless! Features: Individual volume controls with on/off knob Battery level LED Built-in antenna fully adjustable headband Foam-filled ear cushions Nickel metal hydride rechargeable battery, 6 hours operation Optional headphone rack sold separately COLOR CODE: Yellow - frequency: 72.100 MHz Blue - frequency: 72.500 MHz Green - frequency: 72.900 MHz Red - frequency: 74.700 MHz Please note that a minimum order of $40 applies to all Califone products.
Behringer Truth B2031A 225-Watt Powered Studio Monitors with 8.75-inch woofer : The B2031A is adjustable to a wide range of acoustic conditions or subwoofer combinations and magnetic shielding allows placement near computer/video monitors. Truth monitors are delivered in matched pairs. Cabinet dimensions are 15-3/4 x 9-13/16 x 11-3/8 inches, 33 lbs each. Behringer Truth B2031A 225-Watt Powered Studio Monitors with 8.75-inch woofer: Ultra-linear frequency response from 50Hz to 21kHz with individual frequency diagrams Built-in 150-Watt and 75-Watt power amps with enormous power reserve Ultra high-resolution ferrofluid-cooled tweeter Long-throw 8.75-inch woofer with special polypropylene diaphragm and deformation-resistant aluminum die-cast chassis Controlled dispersion characteristics and extremely large sweet spot owing to the unique Behringer wave guide technology Active crossover network with 4th order Linkwitz-Riley filters Adjustable to a wide range of acoustic conditions and subwoofer operation Separately controlled limited for low and high frequency overload protection Automatic standby mode (defeatable) Magnetic shielding allows placement near computer monitors De...
Belle Group Vibratonic High Frequency Concrete Vibrator with Inbuilt Inverter : BGR1054: Ships Via Small Parcel Ground This is the smallest electronic converter box on the market. Turbo-Tronic has been intensively tested under severe site and climate conditions. All components on the Vibratonic High Frequency Concrete Vibrator with Inbuilt Inverter are fully protected and moulded into a sturdy but low weight aluminium box. Features: Outstanding performance: High compacting rate, reliable in operation, even under toughest site conditions. The motor speed remains constant no matter what the the properties of the freshly mixed concrete. Vibratronic provides maximum compaction diameter and compaction performance. Simply plug in: suitable for either 230V-1-50/60 Hz or for 110V-1-50/60 Hz. The converter is an integral part of the switch box. Compact design:smallest frequency converter on the market. All components are fully protected and moulded into a sturdy but low weight aluminium box. Flexibility for many applications: Connection to a single phase electric network with no need for an additional external converter High equipment safety: (thermal protections, switch...
Califone Wireless Headphone : CL1112: Ships Via Small Parcel Ground Wireless headphone system technology puts a premium on wireless learning. Califone's monaural learning system allows an infinite number of headphones to meet the specialized needs of group instruction. Students can learn language, improve math, reading and speaking skills at differentiated learning rates. Just plug any multimedia source into the VHF/FM transmitter, turn on the headphones and you're wireless! Features: Individual volume controls with on/off knob Battery level LED Built-in antenna fully adjustable headband Foam-filled ear cushions Nickel metal hydride rechargeable battery, 6 hours operation Optional headphone rack sold separately COLOR CODE: Yellow - frequency: 72.100 MHz Blue - frequency: 72.500 MHz Green - frequency: 72.900 MHz Red - frequency: 74.700 MHz Please note that a minimum order of $40 applies to all Califone products.
Walker Game Ear II High Definition with Adjustable Frequency Tuning : Walker's Game Ear II HD with Adjustable Frequency Tuning increases hearing up to eight times with 50 decibels of power. This model offers Adjustable Frequency Tuning (AFT) to allow the user to focus on specific frequencies, for crystal clear reception in any environment.
Califone Transmitter : CL1111: Ships Via Small Parcel Ground Wireless headphone system technology puts a premium on wireless learning. Califone's monaural learning system allows an infinite number of headphones to meet the specialized needs of group instruction. Students can learn language, improve math, reading and speaking skills at differentiated learning rates. Just plug any multimedia source into the VHF/FM transmitter, turn on the headphones and you're wireless! Features: Differing signals allows four separate groups to listen at the same time in the same room without any interference Mic input on the transmitter allows the instructor to communicate directly with students, covering at least 100' Audio input from any multimedia, 1/4'' mic input for voice-over function and 1/4'' audio (mono or stereo input) jack Power on LED indicator 12 Volt AC power supply Charging lead for up to 8 headphones COLOR CODE: Yellow - frequency: 72.100 MHz Blue - frequency: 72.500 MHz Green - frequency: 72.900 MHz Red - frequency: 74.700 MHz Please note that a minimum order of $40 applies to all Califone products.
Califone Wireless Headphone : CL1112: Ships Via Small Parcel Ground Wireless headphone system technology puts a premium on wireless learning. Califone's monaural learning system allows an infinite number of headphones to meet the specialized needs of group instruction. Students can learn language, improve math, reading and speaking skills at differentiated learning rates. Just plug any multimedia source into the VHF/FM transmitter, turn on the headphones and you're wireless! Features: Individual volume controls with on/off knob Battery level LED Built-in antenna fully adjustable headband Foam-filled ear cushions Nickel metal hydride rechargeable battery, 6 hours operation Optional headphone rack sold separately COLOR CODE: Yellow - frequency: 72.100 MHz Blue - frequency: 72.500 MHz Green - frequency: 72.900 MHz Red - frequency: 74.700 MHz Please note that a minimum order of $40 applies to all Califone products.
Belle Group Vibratonic High Frequency Concrete Vibrator with Inbuilt Inverter : BGR1054: Ships Via Small Parcel Ground This is the smallest electronic converter box on the market. Turbo-Tronic has been intensively tested under severe site and climate conditions. All components on the Vibratonic High Frequency Concrete Vibrator with Inbuilt Inverter are fully protected and moulded into a sturdy but low weight aluminium box. Features: Outstanding performance: High compacting rate, reliable in operation, even under toughest site conditions. The motor speed remains constant no matter what the the properties of the freshly mixed concrete. Vibratronic provides maximum compaction diameter and compaction performance. Simply plug in: suitable for either 230V-1-50/60 Hz or for 110V-1-50/60 Hz. The converter is an integral part of the switch box. Compact design:smallest frequency converter on the market. All components are fully protected and moulded into a sturdy but low weight aluminium box. Flexibility for many applications: Connection to a single phase electric network with no need for an additional external converter High equipment safety: (thermal protections, switch...
Belle Group Vibratonic High Frequency Concrete Vibrator with Inbuilt Inverter : BGR1054: Ships Via Small Parcel Ground This is the smallest electronic converter box on the market. Turbo-Tronic has been intensively tested under severe site and climate conditions. All components on the Vibratonic High Frequency Concrete Vibrator with Inbuilt Inverter are fully protected and moulded into a sturdy but low weight aluminium box. Features: Outstanding performance: High compacting rate, reliable in operation, even under toughest site conditions. The motor speed remains constant no matter what the the properties of the freshly mixed concrete. Vibratronic provides maximum compaction diameter and compaction performance. Simply plug in: suitable for either 230V-1-50/60 Hz or for 110V-1-50/60 Hz. The converter is an integral part of the switch box. Compact design:smallest frequency converter on the market. All components are fully protected and moulded into a sturdy but low weight aluminium box. Flexibility for many applications: Connection to a single phase electric network with no need for an additional external converter High equipment safety: (thermal protections, switch...
Califone Transmitter : CL1111: Ships Via Small Parcel Ground Wireless headphone system technology puts a premium on wireless learning. Califone's monaural learning system allows an infinite number of headphones to meet the specialized needs of group instruction. Students can learn language, improve math, reading and speaking skills at differentiated learning rates. Just plug any multimedia source into the VHF/FM transmitter, turn on the headphones and you're wireless! Features: Differing signals allows four separate groups to listen at the same time in the same room without any interference Mic input on the transmitter allows the instructor to communicate directly with students, covering at least 100' Audio input from any multimedia, 1/4'' mic input for voice-over function and 1/4'' audio (mono or stereo input) jack Power on LED indicator 12 Volt AC power supply Charging lead for up to 8 headphones COLOR CODE: Yellow - frequency: 72.100 MHz Blue - frequency: 72.500 MHz Green - frequency: 72.900 MHz Red - frequency: 74.700 MHz Please note that a minimum order of $40 applies to all Califone products.
Uniden BC-72XLT NASCAR Handheld Scanner with 100 Channels : Key Features: 100 Channels / 10 Banks Compact Design - The Uniden BC72XLT is designed to be compact for added flexibility and portability. Close Call? RF Capture Technology - Instantly tunes to signals from nearby transmitters Frequency Coverage - Includes the most interesting "action" bands where you can hear police, ambulance, fire, amateur radio, public utilities, weather, and more. 25-54,108-174,406-512 10 Programmable Search Ranges - Helps you find unlisted frequencies in use in your area 6 Preprogrammed Service Searches - Frequencies are Preset in Separate Police, Fire/Emergency, Aircraft, Ham, Marine (by channel) and Weather Banks to make it easy to locate specific types of calls. Ba
Azden Single Channel VHF XLR Plug-In Microphone Transmitter System - VHF Frequency (A4) 171.905 : Single channel VHF receiver with 1/4" output jack for recording or mixer Operational range up to 300' Converts low impedence microphone to wireless XLR "lock-down" connector for secure grip to microphone Frequency response: 40Hz-18kHz Frequency A4, 171.
BIC America 8" 175-Watt In-Ceiling Speakers With Swivel Mid/High Frequency Horns, Pair : Frequency Response: 35 Hz - 23 kHz Sensitivity: 94 dB @ 1 watt, 1 meter, High-efficiency output to 116 dB Drivers: Pivoting 1 1/2" mid/high frequency horns with neodymium magnets, 8" injection molded woofers with high power magnets Gold-Plated Terminals Recommended Power: 10 - 175 watts per channel Impedance: 8 ohms Dimensions: 10-7/8" Round x 3-1/2" D Cutout: 9-1/4" Round Weight: 9 lbs/Pair. Wa
Koss Isolation Earbud Stereophones : 2 sets of specialty ear cushions: fluted silicone and slow recovery foam Ear cushions help insure optimal comfort Frequency response: 10Hz-20kHz Dynamic element for extended frequency response Unique design directs sound into ear canal for deep bass and extended frequency performance 4' cloth-covered cord with 3.
Clarity CE-125 High Frequency Portable Telephone Amplifier : This high-frequency telephone device amplifies incoming calls up to three times above normal level with an easy fingertip control. A built-in sound equalizer selectively increases volume of high-frequency sounds where 95 percent of hearing problems occur. Compatible with standard and electronic phones, multiline or single-line.
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