Grid PM66 Band Conditions — Hiroshima
Localized HF conditions for Maidenhead locator PM66. Coordinating at 36.50°, 133.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
PM66 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From Hiroshima, work the 20:07 UTC and 10:23 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses PM66.
Local evening usually favors 20m first, then 40m as absorption drops.
This square sits in Japan 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
- 20:07 UTC / 10:23 UTC
- Best high band
- 10m
- Nearest city
- Hiroshima
● Local Band Quality Scorings
Use this local score for PM66, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from PM66 — Hiroshima
Great-circle distance, short-path beam heading, the bands most likely open right now from PM66 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 | 3,416 mi | 269° | 40m, 20m, 80m | Open now |
| Oceania | 4,725 mi | 164° | 40m, 20m, 80m | Open now |
| Europe | 5,525 mi | 327° | 40m, 20m, 80m | Open now |
| North America | 6,293 mi | 37° | 10m, 15m, 20m | Open now |
| Southern Africa | 8,164 mi | 257° | 40m, 20m, 80m | Open now |
| South America | 10,804 mi | 27° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for PM66
A planning heuristic for the local day at PM66, built from sunrise 20:07 UTC, sunset 10:23 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 PM66 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in PM66, PM67, PM65, PM76, PM56. 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 PM66, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids