What grid square is the RJ81 operating area?

RJ81 is the live DXRadar reference square for the RJ81 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of RJ81 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 RJ81 right now?

RJ81 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 RJ81 Band Conditions

Localized HF conditions for Maidenhead locator RJ81. Coordinating at 1.50°, 177.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

RJ81 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 104.

Regional Radar

SFI

104

K-Index

0 Kp

Center Coords

1.5, 177.0

Local Phase

Night

Grayline window

Sunrise 18:02 UTC

Sunset 06:09 UTC from RJ81

From the RJ81 operating area, work the 18:02 UTC and 06:09 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses RJ81.

Best band now

10m

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

Closest operating hub

the RJ81 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: Darkness
Aurora exposure: low at this latitude
Grayline: 18:02 UTC / 06:09 UTC
Best high band: 10m
Nearest city: the RJ81 operating area

● Local Band Quality Scorings

Use this local score for RJ81, 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 RJ81 — the RJ81 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from RJ81 to each DX region at SFI 104 / Kp 0, 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	2,811 mi	217°	40m, 20m, 80m	Open now
East Asia / Japan	3,449 mi	318°	40m, 20m, 80m	Open now
North America	5,885 mi	51°	40m, 20m, 80m	Open now
South Asia	6,755 mi	292°	40m, 20m, 80m	Open now
South America	8,574 mi	107°	40m, 20m, 80m	Open now
Europe	8,796 mi	350°	40m, 20m, 80m	Open now
Southern Africa	9,872 mi	226°	40m, 20m, 80m	Open now

● Band-by-Time Plan for RJ81

A planning heuristic for the local day at RJ81, built from sunrise 18:02 UTC, sunset 06:09 UTC, SFI 104, and Kp 0. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 18:02 UTC

40m · 30m · 20m

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

Morning

after 18:02 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 06:09 UTC

20m · 40m

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

Night

after 06:09 UTC

40m · 80m

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

Recent local activity

Spots touching RJ81 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in RJ81, RJ82, RJ80, RJ91, RJ71. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate RJ81 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

CQ World Wide DX Contest - SSB starts Sat, 24 Oct 2026 00:00:00 GMT. Current forecast from RJ81: 10m POOR, 15m POOR, 20m FAIR. Current solar conditions (SFI 105, K 0.33) favor 10m, 15m, 20m for this contest weekend.

Open contest calendar

Nearby grids