Grid DM01 Band Conditions — San Diego
Localized HF conditions for Maidenhead locator DM01. Coordinating at 31.50°, -119.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
DM01 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From San Diego, work the 13:06 UTC and 03:00 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses DM01.
10m and 20m are the main daytime rate bands from this part of North America. Watch 10m first if SFI stays elevated.
This square sits in USA footprint and is best used as a planning center for portable, field-day, and home-station band decisions.
- Latitude zone
- mid-latitude
- Local phase
- Daylight
- Aurora exposure
- low at this latitude
- Grayline
- 13:06 UTC / 03:00 UTC
- Best high band
- 10m
- Nearest city
- San Diego
● Local Band Quality Scorings
Use this local score for DM01, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from DM01 — San Diego
Great-circle distance, short-path beam heading, the bands most likely open right now from DM01 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 |
|---|---|---|---|---|
| North America | 1,289 mi | 61° | 10m, 15m, 20m | Open now |
| South America | 5,161 mi | 119° | 10m, 15m, 20m | Open now |
| East Asia / Japan | 5,615 mi | 307° | 10m, 15m, 20m | Open now |
| Europe | 5,999 mi | 30° | 10m, 15m, 20m | Open now |
| Oceania | 7,318 mi | 244° | 10m, 15m, 20m | Open now |
| South Asia | 8,573 mi | 341° | 10m, 15m, 20m | Open now |
| Southern Africa | 10,292 mi | 89° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for DM01
A planning heuristic for the local day at DM01, built from sunrise 13:06 UTC, sunset 03:00 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 DM01 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in DM01, DM02, DM00, DM11, CM91. 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 DM01, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids