What grid square is the PO04 operating area?

PO04 is the live DXRadar reference square for the PO04 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of PO04 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 PO04 right now?

PO04 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 PO04 Band Conditions

Localized HF conditions for Maidenhead locator PO04. Coordinating at 54.50°, 121.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

PO04 conditions are FAIR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 104.

Regional Radar

SFI

104

K-Index

0 Kp

Center Coords

54.5, 121.0

Local Phase

Night

Grayline window

Sunrise 21:41 UTC

Sunset 09:58 UTC from PO04

From the PO04 operating area, work the 21:41 UTC and 09:58 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses PO04.

Best band now

10m

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

Closest operating hub

the PO04 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: upper mid-latitude
Local phase: Darkness
Aurora exposure: low at this latitude
Grayline: 21:41 UTC / 09:58 UTC
Best high band: 10m
Nearest city: the PO04 operating area

● Local Band Quality Scorings

Use this local score for PO04, 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 PO04 — the PO04 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from PO04 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
East Asia / Japan	1,514 mi	141°	40m, 80m, 20m	Open now
South Asia	3,156 mi	242°	40m, 20m, 80m	Open now
Europe	4,192 mi	317°	10m, 15m, 20m	Open now
North America	5,576 mi	30°	40m, 20m, 80m	Open now
Oceania	6,089 mi	155°	40m, 20m, 80m	Open now
Southern Africa	7,858 mi	258°	40m, 20m, 80m	Open now
South America	9,707 mi	358°	10m, 15m, 20m	Open now

● Band-by-Time Plan for PO04

A planning heuristic for the local day at PO04, built from sunrise 21:41 UTC, sunset 09:58 UTC, SFI 104, and Kp 0. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 21:41 UTC

40m · 30m · 20m

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

Morning

after 21:41 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 09:58 UTC

20m · 40m

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

Night

after 09:58 UTC

40m · 80m

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

Recent local activity

Spots touching PO04 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in PO04, PO05, PO03, PO14, OO94. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate PO04 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 PO04, start with 10m POOR, 15m POOR, 20m FAIR and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids