https://github.com/craptout/radio_test

Radio performance calculator
https://github.com/craptout/radio_test

a30 fs-oas-a30 radio radio-frequency radio-performance rf rf-calculations

Last synced: 14 days ago
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Radio performance calculator

• Host: GitHub
• URL: https://github.com/craptout/radio_test
• Owner: Craptout
• License: bsd-3-clause
• Created: 2024-03-02T23:56:48.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2024-04-02T05:06:19.000Z (8 months ago)
• Last Synced: 2024-10-11T00:05:17.215Z (about 1 month ago)
• Topics: a30, fs-oas-a30, radio, radio-frequency, radio-performance, rf, rf-calculations
• Language: Python
• Homepage:
• Size: 33.2 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
Purpose

-------

Determine radio performance based on the Friis Transmission Equation using decibles for power 


Pr{dB} = Pt{dB} + Gt{dBi} + Gr{dBi} + 20log10((wavelength/(4*pi*d))) 


Range (m) = (10^(Pt{dBm} + Gt{dBi} + Gr{dBi} - Pr{dBm} + 180) / 20) / (41.88 * freq{Hz})

Includes class with preset variables for FS/OAS A-30 radio range test for wildland fire.

Variables

---------

Pr = Power recieved 


Pt = Power transmitted 


Gt = Gain of transmitting antenna = tx_ant_gain 


Gr = Gain of receiving antenna = rx_ant_gain 


d = separation between transmitting and receiving antennas 


Units for wavelength and distance must be the same. 
 

SI Units are used for calculations and converted for users where needed. 


dBi = decibles referenced to an isotropic raditor = dBd + 2.15 


dBd = decibles referenced to a dipole antenna = dBi - 2.15 
 

Aviation antennas are generally 0 dBd. 


wavelength = speed_of_light / frequency 


License

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See the LICENSE file for license rights and limitations (BSD-3-Clause).