Turning it on
Device → SignalDeck Web → Web access. The card then shows the address to open (for example http://192.168.1.20:8080) and an 8-character PIN. Open the address in any browser on the same Wi-Fi network, type the PIN once, and that browser stays logged in for 30 days of use. It is off until you turn it on, and it stays on after a reboot until you turn it off.
What it shows
Its own pages, not a copy of the phone's screen. Intercom: the channel, frequency, S-meter, receive and transmit state with the caller, the channel's history as it happens, live captions with the last finished sentences and a TXT switch, the channel arrows, SCAN, MON, REC, Soft SQ with its level, the zone, and LISTEN, which plays the radio in the browser: exactly what the phone's speaker plays (after the squelch), about a quarter of a second behind, with its own volume. Several browsers can listen at once; it uses about 16 kB/s of Wi-Fi while someone is talking and almost nothing while the channel is quiet. A small bar next to RX/TX shows the audio level. Under it: Last heard (callers and stations grouped like the phone's sheet; click one to tune its channel) and the week's alerts and events. VFO (on the Intercom and Channels pages): tune any frequency with every channel setting, the arrow step, and Back to the channel. Channels: the list of the selected zone (the Zone menu at the top switches it, for the radio too, as on the phone) with All / ★ Favourites / Analog / DMR filters and search; the star on a row adds or removes it from the ★ Favourites zone; click a channel to tune it, Edit to change it (every field of the phone's editor, with the same checks and the same i explanations), New channel to add one, Delete to remove one. Under the list, Zones: make, rename and delete zones and tick their channels (All / None work on the filtered list); a change to the zone in use applies at once. APRS: the packets and stations heard, monitoring on and off, a beacon and messages. SSTV: the picture as it arrives, the saved pictures, and Send a picture (PNG or JPEG from the computer, as Robot 24 Color, Robot 12 BW or Robot 8 BW on the current analog channel; needs Allow transmit from the web). Satellites: the pass being tracked, ISS APRS, ISS SSTV and Stop, and every satellite's passes over you in the next 24 hours (click one to track it; it replaces the current tracking after asking). Logbook: log a contact (frequency and mode filled from the channel), edit or delete entries, show contacts only, export ADIF. Under the logbook, Net control: start a net on the current channel, check stations in (names are looked up when left empty; stations heard in the last 30 minutes are one click away), mark Traffic, Late or Out, remove, end the net, and open or download any net's report. Recordings: the REC recordings, newest first, to play in the browser, download or delete. Packet: APRS-IS, the KISS TNC, the parrot repeater and the fox transmitter as switches (parrot and fox need Allow transmit from the web), Send Morse ID, the voice keyer (upload a recording from the computer into any of the three messages, play it, Send it with an optional Morse ID; the station-ID timer shows when you are due to identify), text modes (listen for RTTY or PSK31, see what is decoded, send text), FT8 over FM (start and stop it, the slot clock, the waterfall (click it to set your transmit frequency) and the decodes; click a CQ to answer it, Call CQ, Halt TX, send a message, the period and the grid; your own callsign shows as (you); answering, CQ and sending need Allow transmit from the web), the packet terminal (connect to a BBS or node, send commands, accept incoming connections), DTMF sending (your saved sequences one click away) and the DTMF heard, the weather alerts received, and all APRS settings (station, beacons, transmit power and lead-in, decoders, APRS-IS and KISS). Your callsign and APRS-IS passcode are never shown in a browser: leave those boxes empty to keep them. Exam: the licence exam practice (practice exam, study a subelement, review missed) with the figures; keys A–D answer and Enter goes on, and missed questions and best scores are the same as in the phone's Exam practice. Under it, the Morse trainer (Koch method, the same lessons and speeds as on the phone): play ten groups of five in the browser, type what you hear, Check; 90 % moves you to the next lesson. Settings: who owns the radio, Take over and Hand back, the radio module (firmware, profile, temperatures, and, after you confirm, restart the module or install an update), the browsers connected and listening, and the Device page's settings (DMR ID, side PTT, volume-up, Soft SQ while scanning, roger beep, voice announcements, keyword alerts, logbook, coverage and car settings). Own the radio at boot is shown there and changed only on the phone. Pager sends a page and lists the pages heard. Messages shows DMR, M17 and pager threads, each with a chip for which one it is, and sends on that thread. The Packet page's weather-alert panel says whether SAME decoding is on. Backup and restore there too: Back up now writes the five CSV files to Download/DMR/DMR_Backups, Download gets any backup as a .zip, Restore puts one back, and you can restore from CSV files on the computer (a backup or an OpenGD77 CPS export). The Diagnostics log there shows the phone's recent radio log, for troubleshooting from the computer. Web access itself, its PIN and Allow transmit from the web change only on the phone. Messages: your DMR text conversations, with quick replies and sending. Contacts: add, edit, delete and text contacts. Map: the APRS stations heard (at the positions they sent), every channel that has a location (whatever zone is selected; set one in the channel editor under Location) and, with Repeaters ticked, the repeaters near the phone (or, with Repeaters here, around the middle of the map wherever you moved it), on a dark OpenStreetMap; drag, zoom with the wheel or the buttons, click a marker for details or to tune a channel (close the card with its ×, Esc or a click on the map). Coverage: pick Signal heard or Transmit reached, then All repeaters or one repeater (or a repeater or channel card → Coverage): the measured squares, and for one repeater its terrain prediction underneath (tick Terrain prediction; it runs on the phone and appears in a few seconds, or longer when terrain has to be downloaded). The line under the toolbar says what is shown and how the prediction is calibrated; click a square for its reading. Fit zooms to the coverage while it is on. The Repeaters layer adds the repeaters within your search radius (the same catalog as Nearby repeaters on the phone); click one for its frequencies, tones or colour code and talkgroups, then Add to my channels shows what will be programmed and adds it. The Coverage choice draws the coverage maps measured by Coverage logging: signal heard (each square in the median signal, on the phone's colour scale) or transmit reached (green: a transmission from there keyed the repeater, red: no reply); click a square for its numbers. Help: this guide, searchable. A bar under the title shows any mode that is running. The phone and every open browser stay in step: a change made on either shows on the others at once.
Decode in the browser
The SSTV page's Decode a recording panel lists the phone's recordings (pass recordings, REC and uploads), newest first: choose SSTV pictures (every mode) or APRS packets and Decode, or Upload… a recording from the computer (WAV, MP3, M4A, OGG, FLAC, up to 200 MB), which the phone keeps and decodes at once. Progress, the stage and the packets found show in the panel; new pictures join the gallery. Stop ends it.
SSTV pictures
On the SSTV page, click a received picture to open it in a card on the same page: the arrows (or the ← → keys, or a swipe) step through the pictures, × or Esc closes it. Share hands the picture to the device's share menu (messages, e-mail, Facebook…); browsers only allow that on the secure address (https, port 8443). Download saves it. Delete removes it from the phone after you confirm. Select (above the pictures) lets you tick several: All, Share (all of them at once) and Delete (after a confirmation); Done ends it. The gallery shows the pictures SignalDeck saved.
Phone panel
The Intercom page also shows the phone itself, updated every few seconds. Battery: the level, charging or on battery (and the charger type), the current in mA (plus while it charges, minus while it drains), how fast the level moves in percent per hour over the last half hour and when it will be full or empty at that pace (it needs about five minutes after SignalDeck Web starts or the charger is plugged in or out), the temperature and the voltage. Cell: the signal in dBm and bars, the carrier and the network (2G to 5G), or no SIM / airplane mode. Wi-Fi: the signal in dBm and bars, the network name, the band and the link speed. NOT UPDATING appears when the phone stops answering.
Transmitting
A browser never transmits unless Allow transmit from the web is on. With it on, the PTT button keys the radio while you hold it (or hold the space bar); letting go, switching tabs or leaving the window always unkeys. On the plain address (http://…:8080) the phone's own microphone transmits. To talk with the computer's microphone open the secure address the Device card shows (https://…:8443): the browser warns once that the certificate is the phone's own (compare the fingerprint on the Device card) and asks once for the microphone; after that PTT sends your voice from the computer. SignalDeck ends it after 28 seconds, and the phone stops by itself if the browser goes quiet for 1.5 s or the connection drops. Only one person can talk at a time. Every transmission started from a browser is written to the channel's history with the browser's address. APRS beacons, messages and the other transmit tools follow the same switch.
Safety
The server only answers addresses on your own network (home Wi-Fi, hotspot) and refuses the internet. Five wrong PINs from one address wait a minute. A browser stays logged in across app restarts and phone reboots (the phone keeps only a fingerprint of each login, never the login itself). New PIN makes a new one and logs every browser out; turning Web access off closes the server. Your callsign's passcode and keys are never sent to a browser.
If it does not open
Phone and computer must be on the same network (a guest Wi-Fi often keeps devices apart). If the card says Not running, another app is using port 8080; restart SignalDeck. The address changes when the phone joins a different network; the card always shows the current one.