Grid DM12 Band Conditions — San Diego
Localized HF conditions for Maidenhead locator DM12. Coordinating at 32.50°, -117.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
DM12 conditions are GOOD. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From San Diego, work the 12:56 UTC and 02:54 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses DM12.
After sunset, 20m transitions and 40m becomes the reliable DX fallback from this part of North America.
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
- Darkness
- Aurora exposure
- low at this latitude
- Grayline
- 12:56 UTC / 02:54 UTC
- Best high band
- 10m
- Nearest city
- San Diego
● Local Band Quality Scorings
Use this local score for DM12, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from DM12 — San Diego
Great-circle distance, short-path beam heading, the bands most likely open right now from DM12 to each DX region at SFI 137 / Kp 2, 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 | 1,153 mi | 62° | 40m, 80m, 20m | Open now |
| South America | 5,093 mi | 120° | 40m, 20m, 80m | Open now |
| East Asia / Japan | 5,666 mi | 308° | 40m, 20m, 80m | Open now |
| Europe | 5,880 mi | 31° | 10m, 15m, 20m | Open now |
| Oceania | 7,453 mi | 245° | 40m, 20m, 80m | Open now |
| South Asia | 8,543 mi | 343° | 40m, 20m, 80m | Open now |
| Southern Africa | 10,173 mi | 88° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for DM12
A planning heuristic for the local day at DM12, built from sunrise 12:56 UTC, sunset 02:54 UTC, SFI 137, and Kp 2. 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 DM12 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in DM12, DM13, DM11, DM22, DM02. 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 DM12, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids