Grid GG64 Band Conditions — Sao Paulo
Localized HF conditions for Maidenhead locator GG64. Coordinating at -25.50°, -47.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
GG64 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From Sao Paulo, work the 09:52 UTC and 20:38 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses GG64.
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
- mid-latitude
- Local phase
- Daylight
- Aurora exposure
- low at this latitude
- Grayline
- 09:52 UTC / 20:38 UTC
- Best high band
- 10m
- Nearest city
- Sao Paulo
● Local Band Quality Scorings
Use this local score for GG64, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from GG64 — Sao Paulo
Great-circle distance, short-path beam heading, the bands most likely open right now from GG64 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 | 1,016 mi | 313° | 10m, 15m, 20m | Open now |
| Southern Africa | 4,477 mi | 108° | 40m, 20m, 80m | Open now |
| North America | 5,540 mi | 322° | 10m, 15m, 20m | Open now |
| Europe | 6,273 mi | 33° | 40m, 20m, 80m | Open now |
| Oceania | 8,440 mi | 197° | 10m, 15m, 20m | Open now |
| South Asia | 8,974 mi | 82° | 40m, 20m, 80m | Open now |
| East Asia / Japan | 11,653 mi | 339° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for GG64
A planning heuristic for the local day at GG64, built from sunrise 09:52 UTC, sunset 20:38 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 GG64 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in GG64, GG65, GG63, GG74, GG54. 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 GG64, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids