Theme page: Calculators, Software
Note: some links may not work as they relate to the old VK1OD.net site.
Online
- Quiet sun radio flux
interpolations
- Noise
measurement uncertainty calculator
- Quiet sun radio flux
interpolations
- Antenna wire catenary
calculator
- Field strength / receive
power converter
- Receiver
sensitivity metric converter
- Noise Figure Y factor method
calculator
- BPL interference evaluation tool
- VSWR calculator
- EMR MPE standards compliance
evaluation tool
- Calculator to support Manual
Testing of Field-Strength Levels Using Conventional
Receivers
- Ambient noise calculator
- Antenna Factor of short tuned
vertical with concentrated loading
- Traffic calculators
- Distance
and bearing calculator
- SG / Brix
/ Plato / Baume calculator
- Characteristic impedance of
transmission line of two square conductors in air
- RX1, RX2 Noise bridge calculator
- Generic noise bridge calculator
- Calculate initial load line of valve RF amplifier
- Calculate RF amplifier pi coupler
- Measuring RF impedance by the three voltmeter
method
- Convert Vpk-Vrms-dBV-dBu-mW-dBm
- Calculate braid coverage
- T Match efficiency estimator
- Calculate Vpk and Irms for given power at
complex load
- Calculate ferrite cored inductor -
rectangular cross section
- Calculate ferrite cored inductor -
circular cross section
- Calculate ferrite cored inductor (from Al)
- Calculate ferrite cored inductor - ΣA/l or
Σl/A
- Calculate permeability of ferrite cored
inductor - ΣA/l or Σl/A & R,X
- Ferrite permeability interpolations
- Skin depth calculator
- Student's t test calculator
- Factorise integer
- Convert Antenna Factor and Gain
- Calculate Vpk and Irms for given power at
complex load
- Folded dipole step up ratio calculator
- Calculate small loop Antenna Factor
- Calculate small
transmitting loop gain from bandwidth measurement
- Calculate Antenna Q from VSWR bandwidth
measurement
- Calculate VSWR and Return Loss from Zload and
Zo (deprecated: use Calculate VSWR and
Return Loss from Zload (or Yload or S11) and Zo)
- Find R,|X| from VSWR,|Z|,Ro
- Calculate cooking time for soft boiled egg
- Two point thermistor calibration
- Wire DC resistance calculator
- Calculate efficiency of vertically polarised
antenna from far field strength
- Calculate VSWR and Return Loss from Zload
(or Yload or S11) and Zo
- Calculate Vmax, Vmin, Imax, Imin for
lossless line from Zload (or Yload) and Zo
- Calculate transmission line Matched
Line Loss from Rin of o/c or s/c resonant section
- Calculate luminous flux (lm) from luminous
intensity (cd) and apex angle (°)
- Calculate irradiance flux (W/m^2) from
irradiance (W,W/sr) and conical apex angle (°)
- Find |Z|,R,|X| from VSWR,|Z|,R,Ro
- Estimate Matched Line Loss from
paired VSWR measurements
- Calculate length of helix of round wire
- Velocity factor solver
- RTD tolerance calculator (DIN EN
60751:2009)
- Calculate shunt / beta / hairpin match
- Measuring impedance using an oscilloscope
- ITU P.372 ambient noise
- Find -3dB frequencies from rise time or decay
time
- Slope - intercept calibration constants calculator
- Find three terminal equivalent circuit for an
antenna system
- Calculate noise figure and equivalent noise
temperature from ARRL MDS
- Calculate uncertainty of ReturnLoss and VSWR
given coupler directivity
- Estimate core loss for ferrite cored RF
transformer
- Signal to Noise ratio degradation by receiver
internal noise (SND)
- Calculate impedance using S11 reflection, S21 series & S21
shunt
- Calculate Kurokawa's power reflection
coefficient from Zload (or Yload or S11) and Zsource
- Resolve measurement of I1, I2 and I12
into Ic and Id
- Calculate Y parameters for nearly ideal
transformer
- IR thermometer emissivity adjuster
- Antenna Effective Aperture
- Convert complex number format
- Calculate Zo and gamma
- Calculate Loss from s11 and s21
- Calculate Z from series s21 - enhanced
- Calculate Z from shunt s21 - enhanced
- Calculate thermistor R or T from
Rref,B
- Antifreeze concentration - Brix
converter
- Magnetic core coefficients converter
- Antenna gain calculator - three antenna
method
- Calculate Bmax in magnetic cored inductor
- Calculate saturation current in toroidal
inductor
- Solve parallel resonant network
- Solve series resonant network
- Calculate toroid core temperature rise
- Calculate torque setting when using
an offset adapter
- Common mode choke design tool
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Owen Duffy 1995, 2021. All rights reserved. Disclaimer.