Guide wavelength is defined as the distance between two equal phase planes along the waveguide. The R f (retardation factor) value is the ratio of the solute’s distance travelled to the solvent’s distance travelled. Their low profile design, often square or rectangular, allows them to be mounted to flat surfaces. 6127a<λ<3. © All Rights Reserved. When calculating the wavelength, you will always have the speed of light (3. The wavelength is the distance between repeating units of a wave pattern. 35 meters. 1-866-PASTERNACK (1-866-727-8376) US and Canada only • +1-949-261-1920 International • Email sales@pasternack. 40) Led Resistor Calculator. Here is a handy table of frequency values with their equivalent wavelengths in free space (vacuum), calculated to 4 significant figures. Waveguide Calculators. The depth at which the amplitude of the wave is reduced to 1/e ( about 0. 6 Propagation Model in the Mobile Environment. C or Velocity of Light = Speed of Light (299,792,458 m/s) Frequency (Hz): The frequency in Hz. e. 4/3 λ (Hentenna circ. Disclaimer: This calculator has been tested and is believed to be accurate to 6 significant figures. where c is the speed of light, f the frequency and λ the wavelength. Type the frequency of the signal (4 GHz). INSTRUCTIONS: Choose units and enter the following: (λ) This is the wavelength of the RF signal. where f is the frequency in MHz. It gets complicated. A = Area of aperture in m 2. This general RF calculator provides path loss, VSWR and wavelength as well as conversions between many common measurements used in the wireless industry. The default primary frequency is that of alternating current ( AC ), 60 hertz (hz). RF Calculator for Calculation / Conversion of Common RF Terms RF calculators and converters. A television station broadcast Radio Frequency (RF) channel is allocated 6 MHz of bandwidth for over-the-air transmission in part of the VHF or UHF Radio Frequency Band. 10 -3. Design a transmission line segment that matches 300 Ω to 50 Ω at 10 GHz using a quarter-wave match. If you measure the hole diameters in the screen that sits in front of the window in the door of the oven, you'll have your answer. 7. They hold the advantage over coaxial cable in terms of ease of manufacturing because of the absence of an inner conductor and shielding. This infomation was given to me by Scott (not me, another one) This general RF calculator includes calculations of path loss, VSWR and wavelength as well as conversions between many common terms used in the wireless industry. The formulae to calculate the dipole antenna and leg length are: L = 468 / f, l = L /2, where: L - Length of the dipole antenna in feet; l - Length of each arm of the dipole in feet; and. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. To achieve a matching impedance of 50 Ohm, the ground plane elements are bent down at an angle of 45 degrees and no matching stubs or balans are needed. Use the frequency calculator below to convert. Formula: Where, λ (Lambda) = Wavelength in meters. Choose the velocity of the wave. It was developed to increase the speed and capacity of mobile communication networks using DSP (digital signal processing) techniques and modulations. d is the diameter of the inner conductor of the coax cable; units of D and d must be the same,. 0. MHz. 0 out of 5. The input unit of wavelength is meters (this can be modified), the output frequency is calculated in MHz. Examples of TEM: Free space, Coax, Stripline, Waveguide. Where L is the length of the dipoles. 5dB loss per 100 feet at 146 MHz). With this calculator you can calculate and verify RF levels on a Radar Target Simulation range. Wire Antenna Calculator. Take the square root of the value from step 2. These are the frequencies at. The lower cutoff frequency (or wavelength) for a particular mode in rectangular waveguide is determined by the following equations (note that the length, x, has no bearing on the cutoff frequency): Rectangular Waveguide TE m,n Mode. Since the area of the sphere of radius (r). EIRP Calculator. 1 meters. It is a good starting point. This is a true unbalanced antenna, with a feed impedance of around 50Ω and therefore a great. User assumes all risks for its use. The Frequency from Wavelength calculator computes the RF frequency (ν) based on the wavelength (λ) and the speed of light (c). Fairview Microwave's Waveguide Calculator provides the cutoff frequency, operating frequency range and closest waveguide size for a rectangular waveguide based on the custom inputted broad wall width. According to [6], the rain rate can range from less than 0. This Doppler effect calculator is a simple tool to determine the apparent frequency or observed frequency of a wave when its source or the receiver is in motion: Enter the emitted frequency value. The Television. The frequency calculator will let you find a wave's frequency given its period or its wavelength and velocity in no time. Where, f c = Cut-off frequency of rectangular waveguide in GHz. Unequal-split Power Divider Calculator. For a parabolic antenna, the gain is calculated by the formula: Ga = 10lg (k (πD / λ)2cos (Φ)) Where: Ga — gain; k — efficiency of antenna surface utilization (approximately 0. Frequency Wavelength Calculator. Enter the input and output impedances to be matched and the centre frequency. 99MHz - 1/100. 95: Cut Off for TE 10 Mode: Frequency: 2. com +1 (718) 934. Guide wavelength. 3 m 4. Figure 3. f if the frequency of the RF signals. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. This parameter is used for the loss calculations. The maximum and minimum frequencies are therefore 100. The development of transmission line theory is presented in Section 3. rf; circuit-design; 433mhz; Share. Enter your desired frequency (MHz) of operation (i. To calculate the speed of sound in a medium, follow these steps: Find the sound's wavelength (λ) and frequency (f) in the medium. FREQUENCY (f) Out of range value [8. 2. This calculator computes quarter-wave, half-wave, 3/4-wavelength and full-wave dimensions of the coaxial cable segment knowing inner insulation material. SINAD to ENOB Calculator. Here is a nice wavelength calculator I just found to generate the table above. The Parabolic Reflector Antenna Calculator on everything RF is an online tool that assists engineers and designers in calculating the critical parameters of a parabolic reflector antenna. Relative Dielectric Constant (έr) This is a required field. Doppler shift is an apparent change in frequency (and, correspondingly, wavelength) due to the relative motion of two objects. One for feet and the other for meters. 0833 meters, Antenna Length (%) = 365. Things to notice: try frequencies 149. 50 inches, WR90 is 0. This calculator is designed to calculate the signal wavelength in transverse electromagnetic mode if the dielectric constant or the velocity of propagation is known. Radio waves are just a small part of the electromagnetic spectrum. e. λ = Wavelength of EM wave; c 0 = Speed of. The antenna factor describes the connection between the electric field intensity E around the antenna and the antenna's voltage output V. 8 in) = 62. RF Calculator is a utility application consisting of various calculations, conversions and reference tables. The beamwidth will vary given a number of different factors such as the antenna type, design, orientation and radio frequency. 14 meters. However, this can be automatically converted. Is all that stitching shown in figure really necessary from an RF point of view? Probably not. Radio Frequency Engineering Calculator. 847-592-6350; [email protected] Wavelength of RF waves : Distance covered by one complete cycle of the RF wave, as shown in Figure 1. Enter the values of operating frequency and relative dielectric constant then click on calculate to get the effective dielectric constant and guide wavelength for any slotline. Cite. The default is megahertz. Suppose you have an antenna with a diameter (D) of 4 meters and you’re working with a wavelength (λ) of 0. 01 November 2023, 18:15 CEST. Air is thin enough that in the Earth's atmosphere radio waves travel very close to the speed of light. With this calculator you can calculate RF parameters in a radar range depending on: Frequency. As a default, our calculator uses a value of 299,792,458 m/s - the speed of light propagating in a vacuum. more ->Since light is an electromagnetic wave, the speed of the wave is 3 × 10 8 m / s and the equation f = v λ can be used. Calculate the result. eA = Efficiency of the aperture (between 0 and 1) λ = Wavelength of radio wave in mm/cm/µm/metre. RF wavelength calculations can be made quite simple with two basic formulas. D is the inside diameter of the coax cable shield,. The change in period between these two frequencies is 2 ps (that is, 1/99. However, it rarely causes any problem at low speeds. λ = Wavelength. When the dimension of an opening in an EMI shield is equal to one-half the wavelength of interference, then the shield radiates EMI and becomes useless. Free Space Wavelength. Here is a simple JavaScript routine that converts between frequency and wavelength in the electromagnetic field realm. An antinode is a point on a standing wave of maximum amplitude. This speed can be calculated based on the frequency/wavelength of the wave and the Pulse Repetition Time. **Note: All of our. Also here is a second formula for calculating a half wavelenght in inches. Wavelength. The advantages of coplanar waveguide are that active devices can be mounted on top of the circuit, like on. A rectangular waveguide is commonly used for the transport of radio frequency signals. The cut-off frequency of the coaxial cable represents the maximum upper operating frequency of the cable. 95 = 33 cm (which is what the computation gives us) The actual formula for length (L) in feet of the half wave dipole is: L = 492 / f. 2. This calculates the wavelength if you know the frequency and wave velocity. MHz. Start by calculating the shielding effectiveness (SE) required at the highest frequency and add in the appropriate EMCSM. Here is a list of some of the calculators in this app: Attenuator Calculators. With hundreds of coaxial RF cables in-stock and ready to ship worldwide immediately, our coax capacitance calculator lets you calculate the impedance of a coax by allowing you to enter the outer diameter dielectric width and inner conductor diameter. The following table provides conversions for wavelength (from frequency), VSWR (from forward and reflected power) and various other useful conversions. Ratings and Reviews 5. So, for example, for a frequency of 433 MHz, the approximate 1/4 wavelength would be around 173. Frequency to Wavelength Calculator. Provide the value for the wave velocity in the medium. With specific circuit designs, the calculator also predicts other properties such as wavelength in the circuit, skin depth and thermal rise above ambient. How do you calculate radiated energy? The radiated energy can be calculated using the formula: Energy (J)=Power (W)×Time (s)Energy (J)=Power (W)×Time (s). The frequency of a radio wave is calculated by dividing the velocity of the radio wave (speed of light, c =299 792 458 m/s) by wavelength (λ). Standing waves are waves of voltage and current which do not propagate (i. A Velocity Factor can be applied if you are working with coaxial cables. Frequency (Output) = 857 MHz. ε 0 = 8. The coaxial cable, along with the balanced two-wire, is the most common type of transmission line used in RF communications. LC Impedance matching network designer. This is related to the question how can electromagnetic waves reach a cell phone in faraday cage?, where in the answer it was stated that the holes (=size of the mesh) would need to be smaller than that of the wavelengths of the EM radiation used for cell phone signals for attenuation to 'start'. The formula used in the Far-Field Calculator is: d F = λ 2 ⋅ D 2 Example. This online plane wave calculator calculates the phase velocity Vp (m/s), wavelength λ (meter (s)), and wave impedance (Ω) of the plane wave by entering the value of relative permittivity (εr), relative permeability (μr) of the medium, and frequency (MHz/GHz). However, if the observer is away from the. 42) Thin Film Resistor Calculator (Trim and non Trim) 43) Opamp Calculator 44) Lumped Balun Calculator 45) Wavelength calculator 46) L-Network Matching Calculator 47) LCR Parallel - Series Conversion. where: λ – Wavelength; v – Propagation speed of the wave; and. For antennas shorter than half of the wavelength of the radiation they emit (i. This calculator uses the following formulas for converting the values between the VSWR, return loss, reflection coefficient, and mismatch loss. The relation between the two for a fixed frequency is called the L/C ratio. This calculator is designed to convert the values of Radio Frequency power in watts to. Description. It include antenna gain calculator, Antenna G/T ratio calculator, coaxial cable Impedance calculator, Noise temperature to Noise Figure Converter, Radar Range Calculator, resonant frequency calculator, wavelength to frequency calculator, receiver C/N ratio,. In the V2400 version, at present under construction, we have upgraded this calculator with a better user interface, making use of up-down controls to change the main input parameters. New UI and defect fixes. The band is sometimes subdivided into VHF-Lo (RF 2 - 6), and VHF-Hi (RF 7 - 13). Frequency: Frequency at which the stripline is analyzed or. Radio Frequency is a range of frequencies in the electromagnetic spectrum. 2. EXAMPLE#1 (Doppler frequency calculation for moving reflector case): Speed of Wave source (m/sec) = 1000 , Operating Frequency (MHz) = 3000(i. Following doppler frequency formula is used to calculate doppler frequency. Antenna Calculators:Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency range from around 20 kHz to around 300 GHz. Microstrip line is a widely used transmission line and for the appropriate transmission its characteristic impedance has to be calculated while using it in RF design & circuits. Noise Factor to Noise Figure Calculator. e. Coplanar Waveguide Calculator. Formula. An online calculator can be found here. The TEM wavelength (λ) depends upon the frequency and relative permittivity (εr) medium (like waveguide/ stripline. Learn more about waves in our wavelength calculator or our frequency calculator. Signals can be reflected whenever there is a mismatch in characteristic impedance. WinRFCalc, the best RF calculator toolbox for Windows. The cable, in theory, is meant to be a contained, non-radiating link. This general RF calculator provides path loss, VSWR and wavelength as. Pasternack's RF Power Conversion Calculator allows you to convert RF input power and RF output power values from variables such as milliwatts (mW), Watts, dBm, dBW, millivolts (mV), and Volts. 65} {f} L = f 142. Converts a signal's wavelength to its frequency. This free online wavelength calculator helps you identify the relationship between frequency and wavelength. This is a required field. An antenna with single straight rod is the whip antenna. This blog post provides the formulas and an Excel spreadsheet for calculating the wavelengths for each 20 MHz channel center frequency in the 2. This is a required field. 19. To find out how long to make each leg of a Dipole antenna, dividing the frequency in MHz into 468 will give the overall length. If VSWR is known, then the reflection coefficient (Γ), return loss (RL), and mismatch loss (ML) is calculated by using following formulas. 2 MHz Golden Gate Bridge (6,450 ft) = 153 kHz Earth Equatorial Diameter (7,926 mi) = 23. Most RF Coaxial Cables have an impedance of 50 ohms or 75 ohms. This antenna wavelength calculator can be used to determine the physical length of an antenna’s electromagnetic wave in free space. This calculator is used to convert Frequency to Wavelength. 62607015E-34 m² · kg/s. The LTE standard and the frequency bands have been. where. The NIST and Michigan researchers mapped field strength as a function of position at resolutions as low as one-hundredth of an RF wavelength, far below normal. Depending on the operating frequencies and power levels, the dimension of the aperture should be smaller than 50and not greater. Watt To dBm Calculator. Waveguide Calculator (Rectangular) Pasternack's Waveguide Calculator provides the cutoff frequency, operating frequency range and closest waveguide size for a rectangular waveguide based on the custom inputted broad wall width. At 300 MHz, for example, the electromagnetic wavelength in brain tissue is approximately 13. Version 2. This is a required field. 1. Wilkinson Power Divider Calculator. Following equations are behind the calculations. Where, c = Light speed. 4126a, so the. where f is the frequency in MHz. Conversion Tables. Say the speed of sound in glass is 4540 ext { m/s} 4540 m/s, and the wavelength is 20. shielding up to 40 GHz would require vent holes smaller than. Then, multiply the values of L and l by 0. The cutoff frequency is the frequency up to which the system functions efficiently. Wavelength Calculator (TEM) Calculate a wavelength in the presence of a dielectric. The frequency is expressed in Hertz (Hz). Calculating skin depth requires the frequency of the AC signal and the resistivity and relative permeability of the conductive material. Wireless/RF; Or try an example search: Resistor Color Code Calculator. r = 7. The Wavelength from Frequency calculator computes the wavelength (λ) based on the RF frequency (ν) and the speed of light (c). The frequency range can be in any hertz range (cycles) through gigahertz. RF EMR is non-ionising radiation, meaning that it has insufficient energy to break chemical bonds or remove electrons (ionisation). Wavelength. Pasternack's RF calculators and conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. RF Calculator: Wavelength, dBm, dBuV, W, dBuV/m, mW/cm^2, pJ/cm^2, V & VSWR This RF calculator has been developed by Compliance Engineering as a resource for individuals involved in EMC and RF compliance measurements. Frequency (ν): The calculator returns the frequency in hertz. 5 / frequency in MHz. Choose a calculation to use the wavelength equation λ = v/f to. Suitable for VHF (~1. 3GHz), Output Doppler Frequency (Hz) = 20000 i. The result will then be displayed in the answer box along with a dynamic conversion scale to show how wavelength varies for different frequencies, above and below the entered value. This tool that will calculate the near-field and far-field distances based on the antenna dimension and wavelength. Also, in the question Should a Faraday cage. Find the wavelength of a radio wave with a frequency of 101. - Tee Attenuator Calculator. The length of a dipole antenna is roughly equal to half the free-space wavelength of the target radio wave. 5 MHz. Frequency ‹―› Wavelength Calculator. How is the turn ratio calculated? The turn ratio of the RF transformer is calculated by using the following formula. This calculator utilises the diameter of the reflector and the operating frequency to calculate critical antenna characteristics such as gain, HPBW, and. com for all of your RF connector and RF cable assembly needs. This is. Comments. Microstrip Impedance Calculator Enter the Height, Width and Permittivity to get the Impedance of the Microstrip Note : The unit of the height and width entered must be the same. 3. The permittivity of free space is ε 0 = 8. εr = Dielectric constant. Wavelength to Frequency Calculator. This is the online directional coupler calculator that calculates the coupling (dB), coupling loss(dB), insertion loss (dB), and directivity (dB) of a directional coupler by entering the value of input power P1 (dBm/Watt(s)), output power. When in doubt, use 1 for copper, . The above formula is to calculate the gain of a parabolic dish antenna where: D = The Diameter of the Parabolic Dish. When in doubt, use 1 for copper, . e. The Importance of Antenna Beamwidth in RF Testing. To maximize signal strength between the transmitter and receiver, the antenna installer needs to keep the obstruction-free direct transmission. Click Here To Download Product Brochure. A few basic facts about waveguide: Here are Waveguide Equations & Fields. To find the half wave, divide that number by two. 0x10^8ms^-1) to put into the formula. When electromagnetic radiation is incident on the. f = v/lambda f = v/λ. This calculator calculates the maximum range of a radar based on the power transmitted, system gain and receiver sensitivity. 74 to. 13mm (depends on manufacturer's specs) and you get a trace width of ~0. AF - Antenna Factor. In RF cables, this property is reflected by the value of the so-called. The Television. This general RF calculator provides path loss, VSWR and wavelength as well as conversions between many common measurements used in the wireless industry. Select the Frequency value's Dimension. - Balanced Attenuator Calculator. This can be easily calculated by hand or by using an online calculator. For an array of apertures the complete formula is: SEdB=K log10 λ/2 L - 20 log n L. 6. Cut-off Frequency (fc) GHz. VSWR from Forward and Reverse Power. 223 V = 223000 µV. The resonant frequency of an LC Circuit is the frequency at which the inductive reactance and capacitive reactance of the LC circuit are equal. Bookmark or "Favorite" this page by pressing CTRL + D. 1 quarter wavelength is the shortest antenna length that will radiate signal. The SAR is a value that corresponds to the relative amount of RF energy absorbed in the head of a user of a wireless handset. Applies to Transverse ElectroMagnetic propagation. Our RF calculators and converters will provide the figures you need for your radio frequency engineering needs. The coax cable is a means for transferring your RF signal to the radiating portion of the radio system. 2 Ratings. Dipole. However, this can be automatically. Due to the three-dimensional propagation of radar waves, frequency hold the highest weight in determining range. If you have no particular preference within a given ham radio band, then simply enter its center frequency (i. RF calculations and RF conversions include metric. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. 05 m, multiply by 39 and you have 80 inches. Waves are signals that travel through air, water, light, and even. 078 GHz Wavelength: 14. Distributed Inductance (L') For a coaxial cable, the inductance per unit length L' in henries per meter (H/m) is defined as. SEdB=40 log10 λ/2 L The aforementioned formulas are for one aperture. According to WatElectronics "Wireless Radio frequency is any of the electromagnetic wave frequencies around 3 kHz-300 GHz". Enter the time delay in receiving an electromagnetic wave from the location of the emitting source, along with selecting the relevant measurement unit of time, and then select the required distance measurement unit to calculate the corresponding distance between the receiver and the emission source . For the angular wavenumber (denoted by k ), the formula is: k = 2 π λ = 2 π f v. 1: 300-to- 50 Ω match using an quarter-wave section of line. The lower cutoff frequency (or wavelength) for a particular mode in rectangular waveguide is determined by the following equations (note that the length, x, has no bearing on the cutoff frequency): Rectangular Waveguide TE m,n Mode. The ITU Radio Frequency to Wavelength conversion tool allows you to enter a frequency from 8. Watt To dBm Calculator. This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. This distance is denoted by R. 35*0. Skin Depth Calculator. With our handy calculator, you can choose from 50 Ohm, 75 Ohm, 93 Ohm and 95 Ohm coaxial cables. Communication signals operate at different frequencies, and you’re able to get the clock period by inverting the frequency value. Wavelength Calculator : Custom Search Home: Equivalents: Internet Glossary : Assists ham radio operators in converting a frequency to its wavelength in feet or inches. Scroll to View . Noise Temperature to Noise Figure Converter. A larger RCS indicates that an object is more easily detected. Antenna gain. 2GHz and calculate the Wavelength. 65wavelength(in air) If you want more accuracy than that approximate 0. 60 Max. Is the Doppler effect sound affected by wavelength? The doppler shift induces a wavelength shift at the wave's origin (the source frequency remains constant) Only the wavelength changes for the travelling observer (in the source), whereas both frequency and wavelength change for the stationary observer (experiencing the doppler. This calculation is different for coax, waveguide, microstrip or any other transmission line structure. λ (Lambda) = Wavelength in meters. Different frequencies go thru different materials differently, but it is not true that lower frequencies (longer wavelengths) "travel farther. Calculating RF Wavelengths. Convert wavelength to frequency using this online Elite RF. Enter F and F (GHz) Metric (millimeters) English (inches) Advertisement. If there is something in the microwave universe that you need a different calculator for, drop us a note and we'll see what we. 31. Where C is the speed of light and is 3 x 10^8 meter/second. So, we calculate lambda by having the speed ratio to the frequency(v/f). Band name Abbreviation ITU band Frequency and wavelength Example uses; Tremendously low frequency: TLF < 3 Hz > 100,000 km: Natural and man-made electromagnetic noise length = wavelength(in cable) * (phase shift in degrees/360), where the wavelength(in cable) = 0. Antenna Length (L) mil. In a circular waveguide. Wavelength (λ): The calculator returns the wavelength in meters. The length of the dipole is usually one-half of the wavelength of the RF signals. 473⋋, 0. (18 Feet = 1/2 wavelength) 27. This is a true unbalanced antenna, with a feed impedance of around 50Ω and therefore a great. 63e -34 J*s. To calculate the antenna length, this formula comes in handy: L = frac {142. Everything RF. In the far field, it is sufficient to satisfy the power-density criterion since the other two parameters are directly related to the power density and the wave impedance. The gigahertz [GHz] to wavelength in nanometres [nm] conversion table and conversion steps are also listed. 10Log 10 [P] = 20Log 10 [V] - 10Log 10 [50 Ω ] Note, the resistance of 50 used above reflects that RF systems are matched to 50Ω. GHz. Enter the relative permitivity, width of the trace, the ground plane spacing, and the substrate thickness to calculate the characteristic impedance. 300 MHz has a wavelength of 20. Yes - Enter the Velocity Factor or, select one. Double-ridge waveguides are rectangular. Suppose you have an antenna with a diameter (D) of 4 meters and you’re working with a wavelength (λ) of 0. Then, apply the formula: λ = v/f. User assumes all risks for its use. The wavelength calculator solves for wavelength, velocity or frequency given 2 known variables. Stripline Calculator. The dimensions of some of the quantities that appear in transmission line theory are discussed in Section. First full wavelength(λ) for 360 degrees is determined using equations. Modeling approximation can be used to design the microstrip trace. If you want to calculate. , electromagnetically "short" antennas), the far and near regional boundaries are measured in terms of a simple ratio of the distance r from the radiating source to the wavelength λ of the radiation. Calculates Radar Doppler shift, with speed, height and distance as input parameters. . Published in association with. Wavelength Calculator (TEM) Calculate a wavelength in the presence of a dielectric. This calculator helps you calculate the characteristic impedance of a coaxial cable given its dimensions. The wavelength is the distance from one peak (crest) of the wave's electric field to the next, and is inversely proportional to the frequency of the wave. Waveguide Calculators. It include antenna gain calculator, Antenna G/T ratio calculator, coaxial cable Impedance calculator, Noise temperature to Noise Figure Converter, Radar Range Calculator, resonant frequency calculator, wavelength to frequency calculator, receiver C/N ratio,. P. Cutoff Frequency Calculator. 5904 / Frequency = 1/2 wavelength in inches. 3kHz to 11. Description. Frequency.