Grid FL04 Band Conditions — Miami
Localized HF conditions for Maidenhead locator FL04. Coordinating at 24.50°, -79.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
FL04 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 105.
From Miami, work the 11:05 UTC and 23:15 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses FL04.
After sunset, 20m transitions and 40m becomes the reliable DX fallback from this part of North America.
This square sits in USA 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
- 11:05 UTC / 23:15 UTC
- Best high band
- 10m
- Nearest city
- Miami
● Local Band Quality Scorings
Use this local score for FL04, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from FL04 — Miami
Great-circle distance, short-path beam heading, the bands most likely open right now from FL04 to each DX region at SFI 105 / Kp 1.33, 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 | 1,494 mi | 317° | 40m, 80m, 20m | Open now |
| South America | 3,075 mi | 150° | 40m, 20m, 80m | Open now |
| Europe | 4,896 mi | 43° | 40m, 20m, 80m | Open now |
| East Asia / Japan | 7,609 mi | 329° | 10m, 15m, 20m | Open now |
| Southern Africa | 7,819 mi | 109° | 40m, 20m, 80m | Open now |
| South Asia | 8,872 mi | 28° | 40m, 20m, 80m | Open now |
| Oceania | 9,425 mi | 251° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for FL04
A planning heuristic for the local day at FL04, built from sunrise 11:05 UTC, sunset 23:15 UTC, SFI 105, and Kp 1.33. 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.
Modest SFI — 20m is the daytime workhorse here.
20m and 15m carry the daytime load at this SFI.
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 FL04 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in FL04, FL05, FL03, FL14, EL94. 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 FL04, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids