rf-info 0.9.2

Python library and command line tool to get Information about a Radio Frequency

rf-info

Command line & Python library for obtaining details about a radio frequency

• Free software: MIT license

• Documentation: https://rf-info.readthedocs.io.

• Python 3.10 through 3.14 tested. Not compatible with Python 2.x

• Linux & Windows with color, json output, and interactive terminal support

Features

Returns information about a radio frequency.

• “Radio Display” format (Dotted notaton)

• hz, khz, Mhz and Ghz representations of the frequency

• Frequency Wavelength

• ITU Band Description

• ITU Band Abbreviation

• ITU Band Number

• ISM Band Type & Description

• IEEE Band Name

• NATO Band Name

• Waveguide Band Name

• Microwave Band Name & Description

• Fixed Station & Mobile Station Designations

• IEEE Primary Band Allocations

• IEEE Secondary Band Allocations

• Detailed IEEE footnotes for each band allocation

• Active, unknown, deep-space, weather, and upcoming satellite frequency records from the JE9PEL list (1,309 indexed records as of 2026-04-26)

• Amateur Radio Modes, License Class, Max Power (US Only)

• Broadcasting Band Number & Details (US Only)

• Wi-Fi Frequency Details, including 6 GHz Wi-Fi 6E/7 ranges (US Only)

• Other Services CB, GMRS, Aircraft Band, Etc (US Only)

Currently supported band allocations for countries: United States (US), Canada (CA), Brazil (BR), Spain (ES), United Kingdom (GB), Russian Federation (RU), Ukraine (UA), Japan (JP), India (IN), Korea, Republic of (KR), Thailand (TH), Switzerland (CH), Chile (CL), Denmark (DK), Finland (FI), France (FR), Hungary (HU), Indonesia (ID), Iceland (IS), Italy (IT), Mexico (MX), Netherlands (NL), New Zealand (NZ), Norway (NO), Poland (PL), South Africa (ZA), Sweden (SE), Venezuela (VE), Australia (AU), Slovenia (SI), Ireland (IE), Belgium (BE), Austria (AT), Argentina (AR), Israel (IL), Romania (RO), China (CN), Uruguay (UY), Greece (GR), Panama (PA), Peru (PE)

I can easily add support for more countries upon request

Includes man pages and texinfo documentation

Data Sources

Satellite data is generated from the JE9PEL satellite list. US Wi-Fi, 5.9 GHz ITS/C-V2X, mobile broadband, and broadcast TV ranges are aligned with current FCC/eCFR band definitions. International allocation tables are stored by ITU region and can be regenerated from CSV exports with tools/parse_allocations.py.

Install

$ pip install rf-info

Command Line Usage

$ rf-info <frequency> [<units>] [<country>]

Frequency format examples:

$ rf-info 89910000
$ rf-info 23,450,000
$ rf-info 12,634.534
$ rf-info 12_000_000
$ rf-info 344_500.100

Also supports “Radio Display” frequency representation (Dotted notation):

$ rf-info 124.125.000
$ rf-info 1.500.125.000
$ rf-info 000.012.500

Unit examples: hz, khz, Mhz, Ghz (Case Insensitive):

$ rf-info 123.100 mhz
$ rf-info 4.5 ghz

Country examples (2 digit abbriviation, 3 digit abbriviation, 3 digit number, or full name) US, USA, 040, JPN, Spain (Case Insensitive):

$ rf-info 144.400.000 hz US
$ rf-info 88 mhz JPN

Python Library Usage

>>> from rf_info import Frequency
>>> freq = Frequency('144.890.000')
>>> freq.details()

Returns a dictionary with normalized fields:

>>> details = freq.details()
>>> details['display']
'144.890.000'
>>> details['amateur']['details']
({'modes': 'CW, Phone, Image, RTTY/Data', 'license': 'Tech, General, Extra', 'power': 'MAX'}, {'modes': 'FM repeater inputs', 'license': 'Tech, General, Extra', 'power': 'MAX'})
>>> details['ieee_allocation']['primary']
('Amateur', 'Amateur-Satellite')

Or you can get individual items directly:

>>> freq.itu
>>> freq.itu['band']
>>> freq.wavelength
>>> freq.ieee_allocation['primary']

Also supports adding and subtracting frequencies. Either a frequency object, int, or string representation of a frequency, returns a new frequency object:

>>> new_freq_object = Frequency('001.123.000') + Frequency('7', 'khz')  # Adds 7 khz to 1.123 mhz
>>> new_freq_object = Frequency('1', 'mhz') + 15000  # Adds 15 khz to 1 mhz
>>> new_freq_object = Frequency('123,000') - '000.007.000'  # Subtracts 7 khz from 123 khz

Output Example

$ rf-info 435.890.000 hz US

 Display: 435.890.000
 Hz: 435,890,000
 Khz: 435,890
 Mhz: 435.89
 Ghz: 0.43589
 Wavelength: 68cm
 ITU Band: 9 - UHF (Ultra High Frequency)
 IEEE Band: UHF (Ultra High Frequency)
 NATO Band: B
 Waveguide Band: None
 Microwave Band: None
 Country: United States of America (US)
 Broadcasting: False
 Wifi: False
 Amateur: True
   Modes: Satellite only uplink/downlink
   License: Tech, General, Extra
   Power: MAX
 Satellite: True
   Name: JAS-2 (FO-29) [24278]
   Link: Downlink
   Modes: SSB CW (DigiTalker)
   Status: Active
 Fixed Station: False
 Mobile Station: False
 Primary Allocation:
   - Radiolocation
 Secondary Allocation:
   - Amateur
   - Earth Exploration-Satellite (Active) [5.279A]
 Allocation Notes:
   - [5.279A]: The use of the frequency band 432-438 MHz by sensors in the Earth exploration-satellite service (active) shall be in accordance with Recommendation ITU-R RS.1260-1. Additionally, the Earth exploration-satellite service (active) in the frequency band 432-438 MHz shall not cause harmful interference to the aeronautical radionavigation service in China. The provisions of this footnote in no way diminish the obligation of the Earth exploration-satellite service (active) to operate as a secondary service in accordance with Nos. 5.29 and 5.30. (WRC-15)

Todo

• Keep ITU/FCC allocation data synced with current regulatory publications

Credits

M. Ian Perry ([e-mail]) AD8DL

History

0.9.2 (2026-04-27)

• Expanded parser, range lookup, CLI output, and frequency arithmetic test coverage.

0.9.1 (2026-04-26)

• Added GitHub Actions publishing support for PyPI releases.

0.9.0 (2026-04-26)

• Fixed overlapping frequency-range lookups so duplicate allocations and satellite records are preserved.

• Refreshed satellite records from the current JE9PEL list and updated US Wi-Fi, broadcast TV, mobile broadband, C-V2X, and GPS service data.

• Modernized Python packaging, dependency metadata, CI, and developer tooling.

• Hardened data update scripts and fixed CLI parsing, country handling, and frequency display edge cases.

0.7.1b (2020-01-23)

• First Stable Pre-release