What grid square is the AH31 operating area?

AH31 is the live DXRadar reference square for the AH31 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of AH31 for planning propagation.

How do I find my grid square?

Use a Maidenhead grid lookup from your GPS coordinates or street address, then compare that grid with the nearby squares linked on this page. A 4-character grid is enough for most HF planning.

What bands are open in AH31 right now?

AH31 is currently rated POOR. The best bands right now are 10m, 20m, 30m, 40m, 60m, with 10m as the main band to watch first.

Grid AH31 Band Conditions

Localized HF conditions for Maidenhead locator AH31. Coordinating at -18.50°, -173.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

AH31 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 105.

Regional Radar

SFI

105

K-Index

0.33 Kp

Center Coords

-18.5, -173.0

Local Phase

Daylight

Grayline window

Sunrise 17:22 UTC

Sunset 05:29 UTC from AH31

From the AH31 operating area, work the 17:22 UTC and 05:29 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses AH31.

Best band now

10m

10m is the headline band right now, with 20m as the dependable fallback if conditions soften.

Closest operating hub

the AH31 operating area

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: tropical
Local phase: Daylight
Aurora exposure: low at this latitude
Grayline: 17:22 UTC / 05:29 UTC
Best high band: 10m
Nearest city: the AH31 operating area

● Local Band Quality Scorings

Use this local score for AH31, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.

10m

EXCELLENT

15m

EXCELLENT

20m

GOOD

40m

POOR

80m

POOR

● Best DX Windows from AH31 — the AH31 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from AH31 to each DX region at SFI 105 / Kp 0.33, 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
Oceania	2,450 mi	244°	40m, 80m, 20m	Open now
East Asia / Japan	4,942 mi	320°	40m, 20m, 80m	Open now
North America	6,254 mi	49°	10m, 15m, 20m	Open now
South America	7,445 mi	113°	10m, 15m, 20m	Open now
South Asia	7,870 mi	286°	40m, 20m, 80m	Open now
Southern Africa	9,108 mi	203°	40m, 20m, 80m	Open now
Europe	10,254 mi	356°	40m, 20m, 80m	Open now

● Band-by-Time Plan for AH31

A planning heuristic for the local day at AH31, built from sunrise 17:22 UTC, sunset 05:29 UTC, SFI 105, and Kp 0.33. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 17:22 UTC

40m · 30m · 20m

Grayline enhancement — low bands reach long distances as the terminator passes.

Morning

after 17:22 UTC

20m · 15m

Modest SFI — 20m is the daytime workhorse here.

Midday

local noon

15m · 20m

20m and 15m carry the daytime load at this SFI.

Dusk grayline

around 05:29 UTC

20m · 40m

Second grayline peak — 20m holds, then hands off to 40m.

Night

after 05:29 UTC

40m · 80m

Low bands own the darkness — 40m for DX, 80m regional.

Recent local activity

Spots touching AH31 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in AH31, AH32, AH30, AH41, AH21. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate AH31 footprint right now. That usually means you should widen the search to the nearest regional hubs below or fall back to 20m/40m for the next operating window.

Top DX targets

Where this grid is reaching right now

No outbound targets were strong enough to rank from the current cache. Check back after the next PSKReporter refresh or switch to the regional grids below.

Contest preview

Next major contest outlook

No contest event is currently loaded. For planning from AH31, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids