What grid square is the GB45 operating area?

GB45 is the live DXRadar reference square for the GB45 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of GB45 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 GB45 right now?

GB45 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 GB45 Band Conditions

Localized HF conditions for Maidenhead locator GB45. Coordinating at -74.50°, -51.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

GB45 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 118.

Regional Radar

SFI

118

K-Index

0.33 Kp

Center Coords

-74.5, -51.0

Local Phase

Daylight

Grayline window

Sunrise 09:04 UTC

Sunset 21:31 UTC from GB45

From the GB45 operating area, work the 09:04 UTC and 21:31 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses GB45.

Best band now

10m

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

Closest operating hub

the GB45 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: 09:04 UTC / 21:31 UTC
Best high band: 10m
Nearest city: the GB45 operating area

● Local Band Quality Scorings

Use this local score for GB45, 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 GB45 — the GB45 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from GB45 to each DX region at SFI 118 / 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
South America	4,120 mi	352°	10m, 15m, 20m	Open now
Southern Africa	4,252 mi	85°	10m, 15m, 20m	Open now
Oceania	5,154 mi	199°	40m, 20m, 80m	Open now
North America	8,132 mi	320°	40m, 20m, 80m	Open now
South Asia	8,369 mi	123°	10m, 15m, 20m	Open now
Europe	9,045 mi	48°	10m, 15m, 20m	Open now
East Asia / Japan	9,760 mi	192°	40m, 20m, 80m	Open now

● Band-by-Time Plan for GB45

A planning heuristic for the local day at GB45, built from sunrise 09:04 UTC, sunset 21:31 UTC, SFI 118, and Kp 0.33. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 09:04 UTC

40m · 30m · 20m

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

Morning

after 09:04 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 21:31 UTC

20m · 40m

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

Night

after 21:31 UTC

40m · 80m

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

Recent local activity

Spots touching GB45 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in GB45, GB46, GB44, GB55, GB35. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate GB45 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 GB45, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids