What grid square is the AH91 operating area?

AH91 is the live DXRadar reference square for the AH91 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of AH91 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 AH91 right now?

AH91 is currently rated FAIR. The best bands right now are 10m, 20m, 30m, 40m, 60m, with 10m as the main band to watch first.

Grid AH91 Band Conditions

Localized HF conditions for Maidenhead locator AH91. Coordinating at -18.50°, -161.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

AH91 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 118.

Regional Radar

SFI

118

K-Index

0.67 Kp

Center Coords

-18.5, -161.0

Local Phase

Daylight

Grayline window

Sunrise 16:34 UTC

Sunset 04:41 UTC from AH91

From the AH91 operating area, work the 16:34 UTC and 04:41 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses AH91.

Best band now

10m

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

Closest operating hub

the AH91 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: 16:34 UTC / 04:41 UTC
Best high band: 10m
Nearest city: the AH91 operating area

● Local Band Quality Scorings

Use this local score for AH91, 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 AH91 — the AH91 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from AH91 to each DX region at SFI 118 / Kp 0.67, 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	3,163 mi	246°	10m, 15m, 20m	Open now
East Asia / Japan	5,480 mi	314°	10m, 15m, 20m	Open now
North America	5,683 mi	44°	10m, 15m, 20m	Open now
South America	6,710 mi	108°	10m, 15m, 20m	Open now
South Asia	8,628 mi	284°	10m, 15m, 20m	Open now
Southern Africa	9,327 mi	189°	10m, 15m, 20m	Open now
Europe	10,204 mi	11°	40m, 20m, 80m	Open now

● Band-by-Time Plan for AH91

A planning heuristic for the local day at AH91, built from sunrise 16:34 UTC, sunset 04:41 UTC, SFI 118, and Kp 0.67. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 16:34 UTC

40m · 30m · 20m

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

Morning

after 16:34 UTC

20m · 15m · 10m

High bands rising with the sun; check 10m for DX.

Midday

local noon

10m · 15m · 20m

Peak high-band window — 10m and 15m open widest.

Dusk grayline

around 04:41 UTC

20m · 40m

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

Night

after 04:41 UTC

40m · 80m

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

Recent local activity

Spots touching AH91 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in AH91, AH92, AH90, BH01, AH81. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate AH91 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 AH91, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids