Grid HD07 Band Conditions — South America
Localized HF conditions for Maidenhead locator HD07. Coordinating at -52.50°, -39.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
HD07 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 137.
From South America operating area, work the 10:32 UTC and 18:54 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses HD07.
10m is the headline band right now, with 20m as the dependable fallback if conditions soften.
This square sits in South America 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
- 10:32 UTC / 18:54 UTC
- Best high band
- 10m
- Nearest city
- South America operating area
● Local Band Quality Scorings
Use this local score for HD07, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from HD07 — South America operating area
Great-circle distance, short-path beam heading, the bands most likely open right now from HD07 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 America | 2,793 mi | 331° | 10m, 15m, 20m | Open now |
| Southern Africa | 3,774 mi | 88° | 10m, 15m, 20m | Open now |
| Oceania | 6,711 mi | 188° | 40m, 20m, 80m | Open now |
| North America | 7,242 mi | 316° | 10m, 15m, 20m | Open now |
| Europe | 7,638 mi | 31° | 10m, 15m, 20m | Open now |
| South Asia | 8,540 mi | 97° | 10m, 15m, 20m | Open now |
| East Asia / Japan | 11,288 mi | 171° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for HD07
A planning heuristic for the local day at HD07, built from sunrise 10:32 UTC, sunset 18:54 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 HD07 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in HD07, HD08, HD06, HD17, GD97. 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 HD07, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids