What grid square is Istanbul?

KN40 is the live DXRadar reference square for Istanbul. The exact portable or home QTH may vary within the square, but this page tracks the center of KN40 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 KN40 right now?

KN40 is currently rated FAIR. The best bands right now are 10m, 12m, 15m, 17m, 20m, with 10m as the main band to watch first.

HomeSFI --K ---:-- UTC

Grid KN40 Band Conditions — Istanbul

Localized HF conditions for Maidenhead locator KN40. Coordinating at 40.50°, 29.00°. Updated with real-time telemetry from NOAA and DX cluster reports.

KN40 conditions are FAIR. Best bands: 10m, 12m, 15m, 17m, 20m. SFI: 137.

Regional Radar

SFI

137

K-Index

3 Kp

Center Coords

40.5, 29.0

Local Phase

Daylight

Grayline window

Sunrise 02:51 UTC

Sunset 17:31 UTC from KN40

From Istanbul, work the 02:51 UTC and 17:31 UTC grayline windows: probe 20m, 30m, and 40m in the 15 minutes either side while the terminator crosses KN40.

Best band now

10m

10m and 15m typically deliver the most consistent Europe outbound DX while solar flux remains healthy.

Closest operating hub

Istanbul

This square sits in Western/Central Europe 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: 02:51 UTC / 17:31 UTC
Best high band: 10m
Nearest city: Istanbul

● Local Band Quality Scorings

Use this local score for KN40, 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 KN40 — Istanbul

Great-circle distance, short-path beam heading, the bands most likely open right now from KN40 to each DX region at SFI 137 / Kp 3, 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
Europe	1,128 mi	312°	10m, 15m, 20m	Open now
South Asia	3,116 mi	99°	10m, 15m, 20m	Open now
Southern Africa	4,599 mi	183°	10m, 15m, 20m	Open now
East Asia / Japan	5,496 mi	51°	40m, 20m, 80m	Open now
North America	6,008 mi	322°	10m, 15m, 20m	Open now
South America	6,733 mi	257°	10m, 15m, 20m	Open now
Oceania	9,093 mi	97°	40m, 20m, 80m	Open now

● Band-by-Time Plan for KN40

A planning heuristic for the local day at KN40, built from sunrise 02:51 UTC, sunset 17:31 UTC, SFI 137, and Kp 3. Not a measurement — a starting point for where to listen as the day turns.

Dawn grayline

around 02:51 UTC

40m · 30m · 20m

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

Morning

after 02:51 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 17:31 UTC

20m · 40m

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

Night

after 17:31 UTC

40m · 80m

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

Recent local activity

Spots touching KN40 and the adjacent squares

These are the newest 10m, 15m, and 20m reports where one side of the path sits in KN40, KN41, KM49, KN50, KN30. This gives the page unique, local context instead of a generic solar snapshot.

No fresh PSKReporter paths are cached for the immediate KN40 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 KN40, start with 10m EXCELLENT, 15m EXCELLENT, 20m GOOD and keep 20m available as the safest all-around fallback.

Open contest calendar

Nearby grids