PropDeck Companion
The desktop companion for FT8 & FT4 — live roster, DXCC & grid hunting, activation spotting, alerts, logging and uploads. Everything between your decoder and the world.
One portable .exe — no installer, no runtime, nothing else to set up.
| Callsign | Calling | Stage | DXCC | Grid | Activator | km | dB | Age |
|---|---|---|---|---|---|---|---|---|
| JA3ABC | CQ | CQ | Japan | PM74 | 8.1k | -14 | 2s | |
| VK2XYZ | VE6KIX | Exchange | Australia | QF56 | 13k | -21 | 5s | |
| K5PGW | N7QQQ | Ending | United States | EM12 | US-0016 | 2.7k | -09 | 17s |
| W1AW | CQ | CQ | United States | FN31 | 3.0k | -05 | 31s | |
| DL2XX | CQ | CQ | Germany | JO31 | 7.4k | -18 | 45s | |
| EA8QQ | CQ | CQ | Canary Is. | IL18 | 7.9k | -16 | 98s |
Plug in anything
Speaks your decoder's language
Built on the standard WSJT-X UDP protocol — stock messages only, no plugins, no patched builds. Point your decoder's UDP server at it and go.
One window, whole session
Built for the way you actually operate
Hunt new ones, automatically
Checked live against your master logbook: a DXCC entity or grid square you've never worked lights its cell the moment it's decoded — and the highlight clears itself the moment you work one.
A roster that reads at a glance
GridTracker's own colour language, taken from its source: each signal owns a cell, so a watched dupe calling you from a new country shows every mark at once, each in its place.
POTA · SOTA · WWFF aware
Live activation references spotted in the roster and written into your QSO comments
automatically — CQ POTA is understood even before the spot caches catch up.
Made for FT8 Battle
Forwards every fresh QSO to FT8 Battle in stock WSJT-X format, blocks
the UTC-day dupes that would cost you points, and carries your /name tag.
Dupes are struck through in the roster — and still land in your local log.
Watch list with real alerts
Callsigns you care about flash and sound the moment they appear. Sounds queue politely around your transmit periods — nothing ever fights your decoder for the audio device.
Logs everywhere they belong
Local daily ADIF, uploads to QRZ.com and LoTW, and ADIF relays to up to three other programs at once — GridTracker, JTAlert, whatever your shack runs.
Review before it counts
Optional manual-submit mode holds every QSO for review: fix a grid, edit a comment, then submit — and the correction lands in your log and everywhere downstream.
Live maps via PropDeck.net
The bridge streams your session to PropDeck.net, and the deck lights up with your propagation in real time. Made for each other — literally.
Portable, honest software
One .exe you can carry on a thumb drive. Your config and logs live beside it in plain sight. It reads your master logbook and never, ever writes to it.
The architecture
Everything between your decoder and the world
Companion sits in the middle of your shack's traffic — one hop, zero friction, every QSO enriched on the way through.
Your decoder
WSJT-X · JTDX · MSHV
Decodium 4
PropDeck Companion
- live roster + hunting
- UTC-day dupe filter
- POTA/SOTA/WWFF enrich
- watch alerts + review
FT8 Battle
dupe-filtered forwarding
PropDeck.net
live map & propagation
QRZ · LoTW
logbook uploads
Local ADIF + relays
daily log · 3 forwards
Better together
PropDeck in the browser.
Companion in the shack.
Two halves of one deck. Run either on its own — together they're the whole picture.
propdeck.net · any browser
PropDeck
The live view of your world on the air.
- Real-time propagation mapping
- See your session as it happens
- Anywhere you have a browser
your shack pc · windows
PropDeck Companion
The working end, next to your decoder.
- Roster, hunting & alerts
- Logging, dupe filter & uploads
- Feeds the deck automatically
Get on the air
Up and running in three minutes
PropDeck-Companion.exe · portable · Windows 10/11 · free
- Run the .exe. No installer — config and logs are created right beside it. First run: Windows SmartScreen will warn about an unrecognised app — click More info → Run anyway. Free, unsigned software; you only do it once.
- Point your decoder at it. Set your decoder's UDP server to
127.0.0.1:2237(multicast groups supported too). - Operate. The roster fills, new DXCC light up, dupes get struck through, and every fresh QSO flows to FT8 Battle, QRZ, LoTW and PropDeck.net. That's it.