IZ4BKK — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Italy Most frequent locator attributed to this token: JN45

Receiver-side FT8 activity involving IZ4BKK, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-29 and 2026-11-04.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 35 FT8 messages attributed to IZ4BKK as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (97%), followed by 20 m (3%). Several six-hour UTC windows tied for the largest share (51%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

40m · 34 20m · 1

First attributed message: 2026-08-29
Last attributed message: 2026-11-04 06:25 UTC

Observed FT8 message patterns

Attributed sample: 35 messages
Active dates: 4 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -9 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 31.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with IZ4BKK in decoded directed-looking exchanges:

9A4ZM · Croatia DK1XAM · Fed. Rep. of Germany JH3IEG · Japan NY1A · United States

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to IZ4BKK

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: JN45 · 23 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,075 km (approx.)
Last such locator decoded: 2026-11-04 06:25 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	IZ4BKK S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-04 05:39	40m	-1 / -	ND9M	- / -25	4	Partial capture
11-04 05:38	40m	-2 / -	W4WFC	- / -	2	Partial capture
11-04 05:36	40m	+6 / -	OA4ENG	- / -	2	Partial capture
11-04 05:28	40m	+7 / -	ZZ5UNO	- / -	2	Partial capture
11-02 15:25	40m	+3 / +6	9A4ZM	+11 / +2	7	✓ Full exchange observed
11-02 15:24	40m	+5 / -	JH3IEG	- / -21	3	✓ Closing fragment
11-02 15:20	40m	- / -6	DK1XAM	-8 / -	2	✓ Closing fragment
11-02 15:15	40m	+6 / -	ZL1VAH	- / -25	8	Partial capture
11-02 14:35	40m	-6 / -	BG7BVI	- / -	2	Partial capture
09-26 05:20	40m	-3 / -	RA3ZDU	- / -	3	Partial capture
09-26 05:18	40m	-7 / -	NY1A	- / -12	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m

UTC    dB Audio  Message
152630  +7 2833  9A4ZM IZ4BKK R+02
152645 +10 2834  IZ4BKK 9A4ZM RR73
152700  +1 2833  9A4ZM IZ4BKK 73
153930  -9 2001  BG7BVI IZ4BKK JN45
052815  +8 2242  ZZ5UNO IZ4BKK JN45 (x2)
053615  +6 2668  OA4ENG IZ4BKK JN45 (x2)
053830  -1 1694  W4WFC IZ4BKK JN45 (x2)
053945  +0 2325  ND9M IZ4BKK JN45 (x4)
062545  -1 2668  OA4ENG IZ4BKK JN45

20m

UTC    dB Audio  Message
072830 -16 1199  ZL2BX IZ4BKK JN45

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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