What grid square is the EF83 operating area?

EF83 is the live DXRadar reference square for the EF83 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of EF83 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 EF83 right now?

EF83 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 EF83 Band Conditions

Localized HF conditions for Maidenhead locator EF83. Coordinating at -36.50°, -83.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

EF83 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 105.

Regional Radar

SFI

105

K-Index

2 Kp

Center Coords

-36.5, -83.0

Local Phase

Night

Grayline window

Sunrise 11:22 UTC

Sunset 23:29 UTC from EF83

From the EF83 operating area, work the 11:22 UTC and 23:29 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses EF83.

Best band now

10m

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

Closest operating hub

the EF83 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: mid-latitude
Local phase: Darkness
Aurora exposure: low at this latitude
Grayline: 11:22 UTC / 23:29 UTC
Best high band: 10m
Nearest city: the EF83 operating area

● Local Band Quality Scorings

Use this local score for EF83, 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 EF83 — the EF83 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from EF83 to each DX region at SFI 105 / Kp 2, 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
South America	2,138 mi	53°	40m, 80m, 20m	Open now
North America	5,303 mi	348°	40m, 20m, 80m	Open now
Southern Africa	6,117 mi	122°	40m, 20m, 80m	Open now
Oceania	6,701 mi	224°	40m, 20m, 80m	Open now
Europe	8,213 mi	47°	40m, 20m, 80m	Open now
East Asia / Japan	10,170 mi	282°	40m, 20m, 80m	Open now
South Asia	10,921 mi	126°	10m, 15m, 20m	Open now

● Band-by-Time Plan for EF83

A planning heuristic for the local day at EF83, built from sunrise 11:22 UTC, sunset 23:29 UTC, SFI 105, and Kp 2. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 11:22 UTC

40m · 30m · 20m

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

Morning

after 11:22 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 23:29 UTC

20m · 40m

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

Night

after 23:29 UTC

40m · 80m

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

Recent local activity

Spots touching EF83 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in EF83, EF84, EF82, EF93, EF73. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate EF83 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 EF83, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids