Grid NJ05 Band Conditions — Colombo
Localized HF conditions for Maidenhead locator NJ05. Coordinating at 5.50°, 81.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
NJ05 conditions are GOOD. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From Colombo, work the 00:31 UTC and 12:55 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses NJ05.
Local evening usually favors 20m first, then 40m as absorption drops.
This square sits in South Asia footprint and is best used as a planning center for portable, field-day, and home-station band decisions.
- Latitude zone
- tropical
- Local phase
- Darkness
- Aurora exposure
- low at this latitude
- Grayline
- 00:31 UTC / 12:55 UTC
- Best high band
- 10m
- Nearest city
- Colombo
● Local Band Quality Scorings
Use this local score for NJ05, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from NJ05 — Colombo
Great-circle distance, short-path beam heading, the bands most likely open right now from NJ05 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 |
|---|---|---|---|---|
| South Asia | 1,158 mi | 350° | 40m, 80m, 20m | Open now |
| East Asia / Japan | 4,169 mi | 51° | 40m, 20m, 80m | Open now |
| Southern Africa | 4,276 mi | 237° | 40m, 20m, 80m | Open now |
| Europe | 5,088 mi | 321° | 40m, 20m, 80m | Open now |
| Oceania | 5,173 mi | 123° | 40m, 20m, 80m | Open now |
| North America | 9,362 mi | 359° | 10m, 15m, 20m | Open now |
| South America | 9,578 mi | 253° | 40m, 20m, 80m | Open now |
● Band-by-Time Plan for NJ05
A planning heuristic for the local day at NJ05, built from sunrise 00:31 UTC, sunset 12:55 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 NJ05 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in NJ05, NJ06, NJ04, NJ15, MJ95. 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 NJ05, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids