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NTP

  • Updated on Dec 31, 2025
  • Published on Dec 31, 2025
  • 1 minute(s) read
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Time synchronization via NTP is configured at the factory by default. This uses the pool.ntp.org time servers.

Custom Configuration

NOTE: requires 2025Q4 release or later

Customization of NTPD can be done using a custom ntpd.conf configuration file.

Step 1) Start with default config

The default configuration file is located at

/opt/fmadio/etc_ro/ntpd_ntp.conf

Copy this to

cp /opt/fmadio/etc_ro/ntpd_ntp.conf /opt/fmadio/etc/ntpd.conf

Step 2) Customize

Edit the file 

/opt/fmadio/etc/ntpd.conf

Add in servers and any additional custom configuration settings.

Step 3) Restart

Restart NTP via

sudo killall time_ntp.lua

Step 4) Finish

Wait for the 1min cronjob to automatically restart the NTPD server process.

FMADIO Packet Capture systems