OpenWebRX Settings

Exported settings for my OpenWebRX / OpenWebRX+ installation. Shared here as a reference for others setting up similar configurations.

Hardware

• SDR Dongles: Multiple RTL-SDR receivers
• Bandplan Region: ITU Region 2 (Americas)

SDR Configurations

This setup uses four RTL-SDR dongles, each dedicated to a different frequency range:

RTL-SDR — VHF/UHF General

A general-purpose SDR covering the VHF and UHF bands. Profiles include:

• Amateur Radio: 2m (144–148 MHz in two segments), 70cm repeaters (438.8 MHz), 1.25m (223.5 MHz)
• Aviation (AirBand): Four profiles covering 118–137 MHz in AM
• HF Amateur: 6m, 10m, 12m, 15m, 17m, 20m, 30m, 40m, 60m, 80m, 160m
• Shortwave Broadcast: 49m, 41m, 31m, 25m, 22m shortwave broadcast bands
• CB Radio: 11m CB (27 MHz, AM) and a general 27 MHz profile
• AM Broadcast: ~1.1 MHz center coverage
• Digital/Data Modes: APRS (144.390 MHz), ISM 433 MHz digital devices, ADS-B (1090 MHz), Pagers (930 MHz), WSPR (50.010 MHz)
• Local/Regional: Old Barney repeater (146.835 MHz), W2NJR Repeater (445.075 MHz), Police Dispatch, Police Channel 9, EMS 6, School Buses, Public Works, Utilities
• Misc: FRS channels (462/467 MHz), Marine Radio (151.8 MHz), NOAA Weather (162.463 MHz), Baby Monitors (426 MHz), ISM 902 MHz, TTN LoRa (124.5 MHz)

RADIO- — FM Broadcast

Dedicated FM broadcast band coverage from 88–107 MHz, with each MHz as a separate profile using wide FM (WFM) demodulation.

0–30 MHz — HF Sweeper

Covers the full 1–30 MHz HF spectrum with 1 MHz step profiles in AM, plus dedicated ham band profiles:

• 80 Meters (3.6 MHz, LSB)
• 40 Meters (7.1 MHz, LSB)
• 30 Meters (10.12 MHz, USB)
• 20 Meters (14.15 MHz, USB)
• 15 Meters (21 MHz, USB)

300–1000 MHz — UHF Scanner

Systematic 2 MHz segment coverage of the 70cm amateur band (420–450 MHz) with squelch set for the band noise floor.

Display & Waterfall Settings

• Waterfall scheme: Google Turbo
• FFT size: 4096 points
• FFT FPS: 9
• Auto level mode: Enabled by default
• Audio compression: ADPCM
• Tuning precision: Rounded (0)

Digital Mode Settings

• WSJT decoding depth: 3 (JT65 at depth 1)
• JS8Call profiles: Normal, Slow
• FST4 intervals: 15s, 30s
• FST4W intervals: 120s, 300s
• Q65 combinations: A30, C60, E120
• DMR/NXDN ID lookup: Enabled
• RDS/RBDS: Enabled
• ADS-B TTL: 900s
• Paging charset: US

Usage

1. Copy settings.json to your OpenWebRX config directory (typically /etc/openwebrx/ or via the admin UI export/import).
2. Update the placeholder values:
   • receiver_name — your station name
   • receiver_admin — your contact email
   • receiver_location — your location description
   • receiver_gps — your latitude/longitude
   • magic_key — set a secure value
   • google_maps_api_key / openweathermap_api_key — add your API keys if desired
3. Adjust SDR device IDs and profiles to match your hardware and local frequencies.

Notes

• Local profiles (police, EMS, school buses, public works, utilities, repeaters) are tuned for the Ocean County, NJ area and will need adjustment for other locations.
• The direct_sampling setting on some HF profiles may need to be enabled depending on your RTL-SDR hardware variant.
• ADS-B is configured on both the general RTL-SDR (NFM profile) and a dedicated ADSB profile — use whichever suits your setup.