Grid OF78 Band Conditions — Perth
Localized HF conditions for Maidenhead locator OF78. Coordinating at -31.50°, 115.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
OF78 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From Perth, work the 23:16 UTC and 09:38 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses OF78.
Local evening usually favors 20m first, then 40m as absorption drops.
This square sits in Australia 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
- 23:16 UTC / 09:38 UTC
- Best high band
- 10m
- Nearest city
- Perth
● Local Band Quality Scorings
Use this local score for OF78, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from OF78 — Perth
Great-circle distance, short-path beam heading, the bands most likely open right now from OF78 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 |
|---|---|---|---|---|
| Oceania | 2,072 mi | 96° | 40m, 80m, 20m | Open now |
| South Asia | 4,434 mi | 322° | 40m, 20m, 80m | Open now |
| East Asia / Japan | 4,896 mi | 20° | 40m, 20m, 80m | Open now |
| Southern Africa | 5,249 mi | 248° | 40m, 20m, 80m | Open now |
| Europe | 8,487 mi | 312° | 10m, 15m, 20m | Open now |
| South America | 9,191 mi | 189° | 10m, 15m, 20m | Open now |
| North America | 10,516 mi | 65° | 40m, 20m, 80m | Open now |
● Band-by-Time Plan for OF78
A planning heuristic for the local day at OF78, built from sunrise 23:16 UTC, sunset 09:38 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 OF78 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in OF78, OF79, OF77, OF88, OF68. 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 OF78, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.
Open contest calendarNearby grids