Grid JO00 Band Conditions — London
Localized HF conditions for Maidenhead locator JO00. Coordinating at 50.50°, 1.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
JO00 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 137.
From London, work the 04:09 UTC and 19:57 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses JO00.
10m and 15m typically deliver the most consistent Europe outbound DX while solar flux remains healthy.
This square sits in Western/Central Europe footprint and is best used as a planning center for portable, field-day, and home-station band decisions.
- Latitude zone
- upper mid-latitude
- Local phase
- Daylight
- Aurora exposure
- low at this latitude
- Grayline
- 04:09 UTC / 19:57 UTC
- Best high band
- 10m
- Nearest city
- London
● Local Band Quality Scorings
Use this local score for JO00, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from JO00 — London
Great-circle distance, short-path beam heading, the bands most likely open right now from JO00 to each DX region at SFI 137 / Kp 3, and a current verdict. "Open now" means a suitable band is scoring well on that path; "Try ~HH:MM" points at the next far-end grayline. Band picks and status are a planning heuristic, not a measurement.
| Target | Distance | Beam | Bands to try | Status |
|---|---|---|---|---|
| South Asia | 4,495 mi | 85° | 10m, 15m, 20m | Open now |
| North America | 4,554 mi | 303° | 10m, 15m, 20m | Open now |
| Southern Africa | 5,502 mi | 157° | 10m, 15m, 20m | Open now |
| South America | 5,755 mi | 236° | 10m, 15m, 20m | Open now |
| East Asia / Japan | 5,913 mi | 34° | 10m, 15m, 20m | Open now |
| Oceania | 10,301 mi | 60° | 40m, 20m, 80m | Open now |
● Band-by-Time Plan for JO00
A planning heuristic for the local day at JO00, built from sunrise 04:09 UTC, sunset 19:57 UTC, SFI 137, and Kp 3. Not a measurement — a starting point for where to listen as the day turns.
Grayline enhancement — low bands reach long distances as the terminator passes.
High bands rising with the sun; check 10m for DX.
Peak high-band window — 10m and 15m open widest.
Second grayline peak — 20m holds, then hands off to 40m.
Low bands own the darkness — 40m for DX, 80m regional.
Recent local activity
Spots touching JO00 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in JO00, JO01, JN09, JO10, IO90. This gives the page unique, local context instead of a generic solar snapshot.
Top DX targets
Where this grid is reaching right now
Contest preview
Next major contest outlook
No contest event is currently loaded. For planning from JO00, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids
Four adjacent squares for internal path checking
Regional hub links