What grid square is the CF10 operating area?

CF10 is the live DXRadar reference square for the CF10 operating area. The exact portable or home QTH may vary within the square, but this page tracks the center of CF10 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 CF10 right now?

CF10 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 CF10 Band Conditions

Localized HF conditions for Maidenhead locator CF10. Coordinating at -39.50°, -137.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

CF10 conditions are POOR. Best bands: 10m, 20m, 30m, 40m, 60m. SFI: 105.

Regional Radar

SFI

105

K-Index

0.33 Kp

Center Coords

-39.5, -137.0

Local Phase

Daylight

Grayline window

Sunrise 14:58 UTC

Sunset 03:05 UTC from CF10

From the CF10 operating area, work the 14:58 UTC and 03:05 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses CF10.

Best band now

10m

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

Closest operating hub

the CF10 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: Daylight
Aurora exposure: low at this latitude
Grayline: 14:58 UTC / 03:05 UTC
Best high band: 10m
Nearest city: the CF10 operating area

● Local Band Quality Scorings

Use this local score for CF10, 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 CF10 — the CF10 operating area

Great-circle distance, short-path beam heading, the bands most likely open right now from CF10 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	4,084 mi	255°	10m, 15m, 20m	Open now
South America	4,984 mi	95°	10m, 15m, 20m	Open now
North America	5,958 mi	29°	10m, 15m, 20m	Open now
East Asia / Japan	7,506 mi	302°	10m, 15m, 20m	Open now
Southern Africa	7,780 mi	163°	10m, 15m, 20m	Open now
South Asia	10,055 mi	250°	40m, 20m, 80m	Open now
Europe	10,681 mi	55°	10m, 15m, 20m	Open now

● Band-by-Time Plan for CF10

A planning heuristic for the local day at CF10, built from sunrise 14:58 UTC, sunset 03:05 UTC, SFI 105, and Kp 0.33. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 14:58 UTC

40m · 30m · 20m

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

Morning

after 14:58 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 03:05 UTC

20m · 40m

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

Night

after 03:05 UTC

40m · 80m

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

Recent local activity

Spots touching CF10 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in CF10, CF11, CE19, CF20, CF00. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate CF10 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

CQ World Wide DX Contest - SSB starts Sat, 24 Oct 2026 00:00:00 GMT. Current forecast from CF10: 10m EXCELLENT, 15m EXCELLENT, 20m GOOD. Current solar conditions (SFI 105, K 0.33) favor 10m, 15m, 20m for this contest weekend.

Open contest calendar

Nearby grids