What grid square is the PB37 operating area?

PB37 is the live DXRadar reference square for the PB37 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of PB37 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 PB37 right now?

PB37 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 PB37 Band Conditions

Localized HF conditions for Maidenhead locator PB37. Coordinating at -72.50°, 127.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

PB37 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 105.

Regional Radar

SFI

105

K-Index

0.33 Kp

Center Coords

-72.5, 127.0

Local Phase

Night

Grayline window

Sunrise 21:21 UTC

Sunset 09:30 UTC from PB37

From the PB37 operating area, work the 21:21 UTC and 09:30 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses PB37.

Best band now

10m

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

Closest operating hub

the PB37 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: 21:21 UTC / 09:30 UTC
Best high band: 10m
Nearest city: the PB37 operating area

● Local Band Quality Scorings

Use this local score for PB37, 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 PB37 — the PB37 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from PB37 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
Oceania	3,056 mi	29°	40m, 20m, 80m	Open now
Southern Africa	4,733 mi	251°	40m, 20m, 80m	Open now
South America	6,387 mi	175°	40m, 20m, 80m	Open now
South Asia	6,912 mi	315°	40m, 20m, 80m	Open now
East Asia / Japan	7,515 mi	9°	40m, 20m, 80m	Open now
North America	9,669 mi	121°	40m, 20m, 80m	Open now
Europe	10,013 mi	265°	40m, 20m, 80m	Open now

● Band-by-Time Plan for PB37

A planning heuristic for the local day at PB37, built from sunrise 21:21 UTC, sunset 09:30 UTC, SFI 105, and Kp 0.33. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 21:21 UTC

40m · 30m · 20m

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

Morning

after 21:21 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 09:30 UTC

20m · 40m

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

Night

after 09:30 UTC

40m · 80m

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

Recent local activity

Spots touching PB37 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in PB37, PB38, PB36, PB47, PB27. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate PB37 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 PB37, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids