SDR++ Frequency Manager Configuration Comprehensive Signals & Frequencies Database This JSON file contains an extensive collection of radio frequencies for various communication modes, including digital data modes, voice packets, amateur radio nets, airband, maritime, and more. Perfect for SDR enthusiasts, ham radio operators, and frequency scanners.
Digital Modes: FT8, JT9, JT65, MSK144, PSK31, RTTY, Packet Radio
Voice Communications: Amateur radio nets (Ireland-focused), Airband (Dublin/Cork/Shannon), Marine VHF
Special Interest: Beacons, SSTV, Meteor Scatter, ADS-B (aircraft tracking), AIS (ship tracking)
Bands Covered: 160m through 23cm, plus airband, marine, and experimental frequencies
Installation Locate your SDR++ root directory
Windows: C:\Program Files\SDR++\ or your custom installation path
Linux: /usr/share/sdrpp/ or ~/.config/sdrpp/
macOS: /Applications/SDR++.app/Contents/Resources/
Backup your existing configuration (important!)
frequency_manager_config.json frequency_manager_config.json.backup Copy the new configuration
Replace the existing frequency_manager_config.json in your SDR++ root directory with this file
If the file doesn't exist, simply place it there
Using the Frequency Manager Launch SDR++
Open the Frequency Manager module
Look for the bookmark/frequency manager icon in the module list
Or access via View → Modules → Frequency Manager
Browse frequency lists
The configuration includes categorized lists (FT8, RTTY, Airband, etc.)
Click on any list to expand and view bookmarked frequencies
Click on a frequency to tune your SDR directly to that signal
Understanding the JSON structure
"mode": Reception mode (0=AM, 1=FM, 4=USB/LSB)
"frequency": Frequency in Hz (e.g., 14074000.0 = 14.074 MHz)
"bandwidth": Filter bandwidth in Hz
"scannable": Include in scanner mode
FT8/JT65 modes are set to USB (mode 4) with 3kHz bandwidth
Airband frequencies use AM (mode 0) for voice
VHF/UHF nets use FM (mode 1) where appropriate
The default selected list is "Amateur Radio VHF Nets" for quick access to local Irish nets
Includes Digital Modes:
FT8: 3.573MHz (80m), 7.074MHz (40m), 14.074MHz (20m), 21.074MHz (15m), 28.074MHz (10m), 50.313MHz (6m), 144.174MHz (2m)
JT65: 3.576MHz (80m), 7.076MHz (40m), 14.076MHz (20m), 21.076MHz (15m)
PSK31: 3.585MHz (80m), 7.045MHz (40m), 14.070MHz (20m)
RTTY: 3.600MHz (80m), 7.040MHz (40m), 14.080MHz (20m), 21.085MHz (15m)
MSK144/Meteor Scatter: 50.260MHz (6m), 144.145MHz (2m), 432.370MHz (70cm)
Airband (Ireland):
Dublin Tower: 118.600MHz (South), 124.680MHz (North)
Dublin Approach: 121.100MHz, 119.930MHz
Shannon Control: 124.700MHz (Low), 135.230MHz (High)
Emergency Guard: 121.500MHz
VOLMET: 127.000MHz (Shannon), 3.413MHz (HF)
Marine:
Dublin Port: 156.625MHz
Coastguard: 156.600MHz
CH16 Emergency: 156.800MHz
AIS Ship Tracking: 161.975MHz, 162.025MHz
Data & Tracking:
ADS-B Aircraft: 1090MHz, 978MHz
APRS: 144.800MHz (2m), 432.500MHz (70cm)
Irish Amateur Nets:
South Dublin RC: 144.330MHz (Daily 8pm SSB)
Mayo MRE: 145.375MHz (Wed 9pm FM)
Cork VHF: 145.475MHz (Tue 9pm FM)
4m Cork Group: 70.2625MHz (Tue 3rd 9pm FM)
SSTV & Image Modes:
3.735MHz (80m), 7.171MHz (40m), 14.230MHz (20m), 144.500MHz (2m)
🔹 Special Interest:
NCDXF Beacons: 14.100MHz (20m)
8m Experimental: 42.000MHz
4m Band: 70.200MHz
23cm Calling: 1296.200MHz (SSB/CW), 1297.500MHz (FM)