What grid square is the ER91 operating area?

ER91 is the live DXRadar reference square for the ER91 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of ER91 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 ER91 right now?

ER91 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 ER91 Band Conditions

Localized HF conditions for Maidenhead locator ER91. Coordinating at 81.50°, -81.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

ER91 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 118.

Regional Radar

SFI

118

K-Index

0.67 Kp

Center Coords

81.5, -81.0

Local Phase

Daylight

Grayline window

Sunrise 10:47 UTC

Sunset 23:48 UTC from ER91

From the ER91 operating area, work the 10:47 UTC and 23:48 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses ER91.

Best band now

10m

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

Closest operating hub

the ER91 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: Daylight
Aurora exposure: watch during geomagnetic storms
Grayline: 10:47 UTC / 23:48 UTC
Best high band: 10m
Nearest city: the ER91 operating area

● Local Band Quality Scorings

Use this local score for ER91, 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 ER91 — the ER91 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from ER91 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
Europe	2,825 mi	79°	40m, 20m, 80m	Open now
North America	2,966 mi	199°	10m, 15m, 20m	Open now
East Asia / Japan	4,198 mi	324°	10m, 15m, 20m	Open now
South Asia	5,249 mi	20°	40m, 20m, 80m	Open now
South America	6,713 mi	158°	40m, 20m, 80m	Open now
Southern Africa	8,166 mi	77°	40m, 20m, 80m	Open now
Oceania	8,644 mi	305°	10m, 15m, 20m	Open now

● Band-by-Time Plan for ER91

A planning heuristic for the local day at ER91, built from sunrise 10:47 UTC, sunset 23:48 UTC, SFI 118, and Kp 0.67. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 10:47 UTC

40m · 30m · 20m

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

Morning

after 10:47 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 23:48 UTC

20m · 40m

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

Night

after 23:48 UTC

40m · 80m

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

Recent local activity

Spots touching ER91 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in ER91, ER92, ER90, FR01, ER81. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate ER91 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 ER91, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids