Grid GG57 Band Conditions — South America
Localized HF conditions for Maidenhead locator GG57. Coordinating at -22.50°, -49.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
GG57 conditions are GOOD. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From South America operating area, work the 09:55 UTC and 20:51 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses GG57.
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
- tropical
- Local phase
- Daylight
- Aurora exposure
- low at this latitude
- Grayline
- 09:55 UTC / 20:51 UTC
- Best high band
- 10m
- Nearest city
- South America operating area
● Local Band Quality Scorings
Use this local score for GG57, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from GG57 — South America operating area
Great-circle distance, short-path beam heading, the bands most likely open right now from GG57 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 |
|---|---|---|---|---|
| Southern Africa | 4,664 mi | 110° | 10m, 15m, 20m | Open now |
| North America | 5,299 mi | 323° | 10m, 15m, 20m | Open now |
| Europe | 6,168 mi | 33° | 10m, 15m, 20m | Open now |
| Oceania | 8,596 mi | 200° | 10m, 15m, 20m | Open now |
| South Asia | 9,066 mi | 80° | 40m, 20m, 80m | Open now |
| East Asia / Japan | 11,414 mi | 337° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for GG57
A planning heuristic for the local day at GG57, built from sunrise 09:55 UTC, sunset 20:51 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 GG57 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in GG57, GG58, GG56, GG67, GG47. 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 GG57, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids