smartDF
iOS solution for Direction Finding
Key Facts:
- Displays available DF bearing, signal, and location data on electronic maps
- Compatible with Rhotheta RT-400 and RT-600 direction finding systems
- Wireless connectivity via Bluetooth® Low Energy (BLE) and Wi-Fi
- Cospas-Sarsat™ and LoJack™ bearing and decoded data displayed
- Live bearing line, bearing cone, and triangulation display options
- Frequency, squelch, DF mode, and scan mode control options
- Bearing and decode data logging with replay, review, and export functions
- Mapbox™ library for geolocation, vectorized layers, offline maps, and charts
smartDF Gen2 is an iPadOS application for remote control and monitoring of compatible Rhotheta Radio Direction Finders. It connects wirelessly to RT-400 and RT-600 systems using Bluetooth® Low Energy (BLE) or Wi-Fi and displays bearing, signal, decode, and location data on electronic maps. Designed for airborne and ground SAR operations, smartDF helps operators locate ELT, PLB, EPIRB, LoJack™, and other V/UHF radio signals.
Features

Narrow down the Search
smartDF automatically generates a search area using two or more user-entered Lines of Bearing (LOBs). Add additional LOBs to refine the intersection area and quickly narrow the target location.
Header | Basic | Standard | Pro |
|---|---|---|---|
Main Capability | View only | DCU Contol | AU Control |
Data Interface | RS-232 | RS-232 | RS-485 |
Live Bearing Display | Yes | Yes | Yes |
Maps & Charts | Dark, Satellite | Dark, Satellite, IFR Low, IFR High, VFR charts | Dark, Satellite, IFR Low, IFR High, VFR charts |
Intersection Area Display | No | Yes | Yes |
Saved Bearing Lines | Up to 5 | Unlimited | Unlimited |
Replay & Review | No | Yes | Yes |
Decode & ID Log | No | Yes | Yes |
Log Export | No | Yes | Yes |
Audio Options | Standard | Standard | Advanced |
User Icon Settings | Fixed | Adjustable | Adjustable |
Wireless Connectivity | BLE and Wi-Fi | BLE and Wi-Fi | BLE and Wi-Fi |
Signal Indication | Receive signal strength and squelch level indication | Receive signal strength and squelch level indication | Receive signal strength and squelch level indication |
Scan Mode (only band scan) | No | Yes | Yes |
LoJack IDs | View only | Up to 2 VLU IDs, user-selectable | Up to 2 VLU IDs, user-selectable |
Heading Source | GPS / iPad compass | GPS / iPad compass | GPS / iPad compass |



















