Grid GM04 Band Conditions
Localized HF conditions for Maidenhead locator GM04. Coordinating at 34.50°, -59.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
GM04 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From the GM04 operating area, work the 09:00 UTC and 23:06 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses GM04.
Night operation should keep 20m on watch and move to 40m as the path darkens.
This square sits in a mixed-region 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
- 09:00 UTC / 23:06 UTC
- Best high band
- 10m
- Nearest city
- the GM04 operating area
● Local Band Quality Scorings
Use this local score for GM04, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from GM04 — the GM04 operating area
Great-circle distance, short-path beam heading, the bands most likely open right now from GM04 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 |
|---|---|---|---|---|
| North America | 2,165 mi | 290° | 40m, 80m, 20m | Open now |
| South America | 3,421 mi | 179° | 40m, 20m, 80m | Open now |
| Europe | 3,552 mi | 50° | 10m, 15m, 20m | Open now |
| Southern Africa | 6,950 mi | 114° | 40m, 20m, 80m | Open now |
| East Asia / Japan | 7,444 mi | 346° | 40m, 20m, 80m | Open now |
| South Asia | 7,620 mi | 42° | 10m, 15m, 20m | Open now |
| Oceania | 10,720 mi | 272° | 40m, 20m, 80m | Open now |
● Band-by-Time Plan for GM04
A planning heuristic for the local day at GM04, built from sunrise 09:00 UTC, sunset 23:06 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 GM04 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in GM04, GM05, GM03, GM14, FM94. 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 GM04, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids
Four adjacent squares for internal path checking
Regional hub links