Grid DC21 Band Conditions
Localized HF conditions for Maidenhead locator DC21. Coordinating at -68.50°, -115.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
DC21 currently has elevated aurora risk (Kp: 5). High-latitude paths may be degraded.
From the DC21 operating area, work the 17:56 UTC and 21:39 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses DC21.
10m is the headline band right now, with 20m as the dependable fallback if conditions soften.
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
- high-latitude
- Local phase
- Daylight
- Aurora exposure
- elevated — auroral absorption likely (Kp 5)
- Grayline
- 17:56 UTC / 21:39 UTC
- Best high band
- 10m
- Nearest city
- the DC21 operating area
● Local Band Quality Scorings
Use this local score for DC21, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from DC21 — the DC21 operating area
Great-circle distance, short-path beam heading, the bands most likely open right now from DC21 to each DX region at SFI 148 / Kp 5, 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 |
|---|---|---|---|---|
| Oceania | 4,426 mi | 254° | 10m, 15m, 20m | Open now |
| South America | 4,443 mi | 64° | 10m, 15m, 20m | Open now |
| Southern Africa | 5,615 mi | 145° | 40m, 20m | Marginal now |
| North America | 7,479 mi | 14° | 10m, 15m, 20m | Open now |
| East Asia / Japan | 8,935 mi | 270° | 10m, 15m, 20m | Open now |
| South Asia | 9,177 mi | 197° | 10m, 15m, 20m | Open now |
| Europe | 10,225 mi | 97° | 40m, 20m | Marginal now |
● Band-by-Time Plan for DC21
A planning heuristic for the local day at DC21, built from sunrise 17:56 UTC, sunset 21:39 UTC, SFI 148, and Kp 5. 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. Geomagnetic storm in progress (Kp 5) — expect absorption and weak high-latitude paths.
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. Geomagnetic storm in progress (Kp 5) — expect absorption and weak high-latitude paths.
Low bands own the darkness — 40m for DX, 80m regional. Geomagnetic storm in progress (Kp 5) — expect absorption and weak high-latitude paths.
Recent local activity
Spots touching DC21 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in DC21, DC22, DC20, DC31, DC11. 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
Worked All Europe - SSB starts Sat, 12 Sep 2026 00:00:00 GMT. Current forecast from DC21: 10m FAIR, 15m FAIR, 20m POOR. Geomagnetic conditions are mixed (SFI 148, K 5). Expect 20m and 40m to carry most of the weekend.
Open contest calendarNearby grids
Four adjacent squares for internal path checking
Regional hub links