Mount your iPhone on the antenna, sweep, and watch Signal Bullseye pin each RSSI reading to the exact direction it came from. No GPS. No compass. No guesswork.
Workflow
No compass, no GPS, no IMU required — just your phone's camera and an SSH or SNMP connection to the radio.
Attach your iPhone to the antenna mast. Open Signal Bullseye and connect to the radio's CLI via the built-in SSH terminal.
Enable auto-shoot and sweep the antenna. The app tracks pointing direction using camera optical flow — no orientation sensors involved.
Each RSSI reading appears as a colored dot on the live camera view, pinned to the direction it was measured.
The map makes peak signal obvious. Steer back to that direction and lock the antenna down.
Placement Tip
The camera doesn't need to be precisely aimed at the far-end radio — roughly pointed is fine. More important is a stable background: keep long grass or leaves that wave in the wind out of frame, since that movement looks the same as the antenna turning and will throw off tracking.
Setup
Any phone mount that attaches rigidly to the antenna works. Here are three approaches proven in the field.
The AirFiber 60 XR, Wave Pro, and Wave LR all have a built-in ¼″-20 tripod boss. Any phone holder with a standard tripod thread drops right in with a bolt or short threaded rod and nut. For antenna bodies without a tripod boss, a C-clamp or clutch clamp works with many phone holders. The AF-24 uses a custom steel L-bracket bolted to the antenna body using the existing mounting bolts. Phone holder we use →
Connectivity
Ethernet Dongle
Most reliable option. Use a Lightning-to-Ethernet adapter (iPhone 14 and earlier) or a USB-C Ethernet adapter (iPhone 15 and later). Plug directly into the radio's management port, a switch on the same subnet, or a router with access to the radio's management IP, then SSH in from Signal Bullseye's built-in terminal.
Wi-Fi
Some radios broadcast a management SSID. Alternatively, bring your own Wi-Fi with access to the management IP. Join it from Settings → Wi-Fi, then connect via Signal Bullseye's SSH terminal. No adapter needed. Useful to avoid the cable tangles.
Cellular + VPN
If the radio is only reachable through the link it backhauls, connect the iPhone to cellular and use a VPN that routes into the site's management subnet. Useful on remote or elevated sites where running a cable isn't practical.
In The Field
Screenshots taken during live antenna alignment sessions. The dots are real RSSI readings, pinned to real directions.
Signal Bullseye builds a spatial RSSI map in real time as you sweep. The peak direction is always visible — and always returnable to.
App Store Preview
Signal Map, Live
Find Your Peak
One Sweep, Done
Capabilities
Built for microwave backhaul, mmWave, and WISP point-to-point link alignment.
Uses Apple's Vision framework to measure how much the camera moved between frames. No orientation sensors involved — the camera is the only position reference.
RSSI readings appear as color-coded dots on the live camera view, each anchored to the exact antenna direction where it was captured.
Full-featured SSH terminal emulator with host management, SSH key support (including Secure Enclave), and regex-based RSSI extraction from any radio CLI or via SNMP polling.
Captures readings automatically as you sweep. Volume buttons work as a manual trigger. Saved snippets let you kick off a radio polling script with one tap.
Track Local V, Local H, Remote V, and Remote H simultaneously. Switch between planes to optimize cross-pol isolation and peak direction together.
SSH private keys stored in the iOS Secure Enclave are hardware-protected and never extractable as plaintext. RSA, Ed25519, and ECDSA supported.
Audience
Anyone who installs, aligns, or troubleshoots directional wireless links.
Point-to-point and point-to-multipoint CPE alignment
Microwave and mmWave licensed link commissioning
Sector and PTP alignment during new site builds
Signal pattern analysis and interference troubleshooting
Camera-based antenna alignment technology patent pending. Signal Bullseye is developed and maintained by KIZA, Inc.
Signal Bullseye is free on the App Store.
(subscription required for alignment features)
