YO9IAB — 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: Romania Most frequent locator attributed to this token: KN25

Receiver-side FT8 activity involving YO9IAB, decoded by SO8OO in southeastern Poland. 5,891 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 131 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

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 5,891 FT8 messages attributed to YO9IAB as the transmitting token by decoded message structure across 131 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (61%), followed by 80 m (28%) and 20 m (10%). Several six-hour UTC windows tied for the largest share (81%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (77%); the estimated median was -1.1 dB.

Overview

5,891

Messages attributed

131

UTC dates decoded

563

Active 15-min windows

-1.1 dB

Estimated median S/N

Bands

80m · 1,663 40m · 3,606 20m · 613 10m · 9

First attributed message: 2026-06-06
Last attributed message: 2026-11-05 05:04 UTC

Observed FT8 message patterns

Attributed sample: 5,891 messages
Active dates: 131 UTC dates
Estimated median S/N: -1.1 dB
Estimated 10th-90th percentile: -13 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 343, moderate (-15 to -9 dB) 1,004, strong (≥ -8 dB) 4,544.

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 YO9IAB in decoded directed-looking exchanges:

CT2GQA · Portugal ×3 R5AV · European Russia ×3 OK2CNI · Czech Republic ×2 IQ0YA · Italy ×2 KF8EXX · United States ×2 N7JB · United States ×2 TA1MB · European Turkey ×2 W1LE · United States ×2 W3L · United States ×2 WF1B · United States ×2 YO3AI · Romania ×2 AA3B · United States ×2

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 YO9IAB

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: KN25 · 4,251 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 549 km (approx.)
Last such locator decoded: 2026-11-05 05:00 UTC

Other locator fields attributed to this token: KN35 (2).

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	YO9IAB S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 05:02	40m	+1 / -	TC8TR	- / -13	5	Partial capture
11-05 05:01	40m	-2 / -	SP7SZJ	- / +5	2	✓ Closing fragment
11-05 04:58	40m	0 / -	4X5XM	- / -14	4	✓ Closing fragment
11-05 04:53	40m	-5 / -	W5UQ	- / -	7	Partial capture
11-05 04:42	40m	-5 / -9	PD1DBL	-8 / -11	7	✓ Full exchange observed
11-05 04:38	40m	-7 / -9	KB3Z	-20 / -1	4	✓ Full exchange observed
11-05 04:37	40m	- / -12	F1PBZ	0 / -	4	Partial capture
11-05 04:23	80m	-2 / -	N5AO	- / -	13	Partial capture
11-05 04:19	80m	-1 / -	DO1OAS	-7 / -4	3	Partial capture
11-05 04:17	80m	+3 / -	AK1P	- / -	3	Partial capture
11-04 17:02	40m	- / -14	LY3QR	-10 / -	2	✓ Closing fragment
11-04 16:59	40m	- / -	IZ4AIF	+2 / -	5	Partial capture
11-04 16:56	40m	-12 / +9	OE3RWR	-4 / -	3	✓ Closing observed
11-04 16:51	40m	- / -	DJ2MS	-12 / -	6	✓ Closing fragment
11-04 16:41	40m	- / -1	F1PBZ	-2 / -	3	Partial capture
11-04 05:40	40m	+5 / -	ZL4AS	-18 / -16	7	✓ Closing observed
11-04 05:31	40m	+3 / -	ZZ5UNO	- / -	11	Partial capture
11-04 05:21	40m	+4 / -	DL4FCK	- / 0	2	✓ Closing fragment
11-04 05:11	80m	+2 / -	R8XF/P	- / -	2	Partial capture
11-04 05:08	80m	+4 / -22	DO5AX	-12 / -	3	✓ Closing observed
11-04 05:06	80m	+2 / -	R9CS/P	- / -	4	Partial capture
11-04 04:59	80m	+10 / -6	DO2KST	-20 / -17	11	✓ Full exchange observed
11-04 04:57	80m	- / -16	R4FDD	-17 / -	2	Partial capture
11-04 04:53	80m	+10 / -	N4DWD	- / -	5	Partial capture
11-04 04:51	80m	+4 / -	R9CS/P	- / -	2	Partial capture
11-04 04:48	80m	+5 / -	K3DAC	- / -	5	Partial capture
11-04 04:44	80m	+14 / -	N4DWD	- / -	3	Partial capture
11-04 04:41	80m	+17 / -	W3LPL	- / -	6	Partial capture
11-04 04:37	80m	+14 / -	6W/IK2HKT	- / -	6	Partial capture
11-03 05:30	40m	+5 / -	WP4TNN	- / -16	7	Partial capture
11-03 05:17	40m	+5 / -12	WP4TNN	-24 / -14	9	Partial capture
11-03 04:31	80m	-1 / -	R8XF/P	- / -	10	Partial capture
11-03 04:22	80m	+8 / -	DP75BAC	- / -	10	Partial capture
11-03 04:20	80m	-8 / -	GB1RBL	- / -16	3	✓ Closing fragment
11-03 04:19	80m	- / -15	R2EN	-8 / -	2	Partial capture
11-03 04:16	80m	-7 / -	AC1JS	- / -17	7	✓ Closing fragment
11-03 04:09	80m	-8 / -	AC1JS	- / -	2	Partial capture
11-02 04:57	40m	- / +3	F1PBZ	-3 / -	4	Partial capture
11-02 04:57	40m	- / -	RJ3DC	-6 / -	2	Partial capture
11-02 04:29	80m	+7 / -	EI4GAB	- / -	2	Partial capture
11-02 04:24	80m	+6 / +4	OK2CNI	+16 / -2	5	✓ Full exchange observed
11-02 04:20	80m	+6 / -13	9A2WA	-15 / -15	6	✓ Full exchange observed
11-02 04:14	80m	0 / -	LZ911TD	-8 / -3	6	Partial capture
11-02 04:14	80m	-2 / -	YP40CSM	- / 0	2	Partial capture
11-01 17:37	40m	+1 / -	ER3BN	- / -	9	Partial capture
11-01 16:54	40m	-4 / -	IU6TFC	-12 / -5	5	Partial capture
11-01 16:51	40m	+6 / -	OK1DXR	- / +2	2	✓ Closing fragment
11-01 16:49	40m	+6 / -	BI4IWL	- / -18	4	✓ Closing fragment
11-01 04:26	80m	-3 / +3	OH6IH	-13 / -6	3	✓ Full exchange observed
11-01 04:23	80m	+2 / +7	ON8WR	0 / 0	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
045600  -5 1320  W5UQ YO9IAB KN25 (x3)
045845  +1  800  4X5XM YO9IAB KN25 (x4)
050045  -1  800  CQ YO9IAB KN25
050115  -3  800  SP7SZJ YO9IAB +05 (x2)
050215  +2  800  TC8TR YO9IAB -13 (x5)

80m

UTC    dB Audio  Message
042130 -21 1195  CQ YO9IAB KN25 (x2)
042300  -4 1195  N5AO YO9IAB KN25 (x13)

160m

UTC    dB Audio  Message
032030  +4 2580  YO9IAB HF5A JO92

20m

UTC    dB Audio  Message
064130 +13 2856  YO9IAB F4EDB R-04 (x2)
162415  +2 2600  YO9IAB PD0PWH JO21 (x3)
162815  +5 2600  YO9IAB PD3RFR JO22 (x5)
163145  -4 2599  YO9IAB ON9MD JO21 (x5)

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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