Grid AM78 Band Conditions
Localized HF conditions for Maidenhead locator AM78. Coordinating at 38.50°, -165.00°. Updated with real-time telemetry from NOAA and DX cluster reports.
AM78 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.
From the AM78 operating area, work the 15:53 UTC and 06:21 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses AM78.
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
- 15:53 UTC / 06:21 UTC
- Best high band
- 10m
- Nearest city
- the AM78 operating area
● Local Band Quality Scorings
Use this local score for AM78, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.
● Best DX Windows from AM78 — the AM78 operating area
Great-circle distance, short-path beam heading, the bands most likely open right now from AM78 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 |
|---|---|---|---|---|
| East Asia / Japan | 3,089 mi | 285° | 40m, 20m, 80m | Open now |
| North America | 3,523 mi | 67° | 40m, 20m, 80m | Open now |
| Oceania | 5,550 mi | 218° | 40m, 20m, 80m | Open now |
| Europe | 6,315 mi | 3° | 40m, 20m, 80m | Open now |
| South Asia | 6,600 mi | 304° | 40m, 20m, 80m | Open now |
| South America | 7,771 mi | 92° | 40m, 20m, 80m | Open now |
| Southern Africa | 11,362 mi | 320° | 10m, 15m, 20m | Open now |
● Band-by-Time Plan for AM78
A planning heuristic for the local day at AM78, built from sunrise 15:53 UTC, sunset 06:21 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 AM78 and the adjacent squares
These are the newest 10m, 15m, and 20m reports where one side of the path sits in AM78, AM79, AM77, AM88, AM68. 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 AM78, 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