What grid square is the OP91 operating area?

OP91 is the live DXRadar reference square for the OP91 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of OP91 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 OP91 right now?

OP91 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 OP91 Band Conditions

Localized HF conditions for Maidenhead locator OP91. Coordinating at 61.50°, 119.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

OP91 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 105.

Regional Radar

SFI

105

K-Index

0.33 Kp

Center Coords

61.5, 119.0

Local Phase

Night

Grayline window

Sunrise 21:50 UTC

Sunset 10:05 UTC from OP91

From the OP91 operating area, work the 21:50 UTC and 10:05 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses OP91.

Best band now

10m

Night operation should keep 20m on watch and move to 40m as the path darkens.

Closest operating hub

the OP91 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: high-latitude
Local phase: Darkness
Aurora exposure: watch during geomagnetic storms
Grayline: 21:50 UTC / 10:05 UTC
Best high band: 10m
Nearest city: the OP91 operating area

● Local Band Quality Scorings

Use this local score for OP91, then compare the global live ranking oncurrent ham band conditionsbefore changing bands.

10m

POOR

15m

POOR

20m

FAIR

40m

EXCELLENT

80m

EXCELLENT

● Best DX Windows from OP91 — the OP91 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from OP91 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
East Asia / Japan	1,946 mi	146°	40m, 80m, 20m	Open now
South Asia	3,349 mi	234°	40m, 20m, 80m	Open now
Europe	3,801 mi	312°	40m, 20m, 80m	Open now
North America	5,190 mi	29°	10m, 15m, 20m	Open now
Oceania	6,556 mi	153°	40m, 20m, 80m	Open now
Southern Africa	7,881 mi	259°	40m, 20m, 80m	Open now
South America	9,221 mi	356°	40m, 20m, 80m	Open now

● Band-by-Time Plan for OP91

A planning heuristic for the local day at OP91, built from sunrise 21:50 UTC, sunset 10:05 UTC, SFI 105, and Kp 0.33. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 21:50 UTC

40m · 30m · 20m

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

Morning

after 21:50 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 10:05 UTC

20m · 40m

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

Night

after 10:05 UTC

40m · 80m

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

Recent local activity

Spots touching OP91 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in OP91, OP92, OP90, PP01, OP81. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate OP91 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 OP91, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids