### Install nrarfcn package

Source: https://nrarfcn.rtfd.io

Use pip to install the nrarfcn package from PyPI.

```bash
pip install nrarfcn
```

--------------------------------

### Calculate NR-ARFCN and Frequency values

Source: https://nrarfcn.rtfd.io

Examples of using the nrarfcn library to convert between frequencies, NR-ARFCNs, bands, and GSCN values.

```python
>>> import nrarfcn as nr

>>> nr.get_frequency(620000)
3300.0

>>> nr.get_nrarfcn(27500.0)
2070832

>>> nr.get_bands_by_frequency(1850.0)
['n2', 'n3', 'n25']

>>> nr.get_bands_by_nrarfcn(2564083)
['n263']

>>> nr.get_duplex_mode('n71')
'FDD'

>>> nr.get_nrarfcn_range('n25', direction='ul')
(370000, 383000)

>>> nr.get_frequency_range('n100', direction='dl')
(919.4, 925)

>>> nr.get_frequency_by_gscn(2156)
862.85

>>> nr.get_gscn_by_frequency(4405.440)
8475

>>> nr.get_gscn_range('n92')
(3584, 3787)
```

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