9A4BL — 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: Croatia Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving 9A4BL, decoded by SO8OO in southeastern Poland. 176 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 32 UTC dates in the available aggregate history. Observed between 2026-06-10 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 176 FT8 messages attributed to 9A4BL as the transmitting token by decoded message structure across 32 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (39%), followed by 80 m (30%) and 40 m (26%). 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 (70%); the estimated median was -3 dB.

Overview

176

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 52 60m · 6 40m · 45 20m · 68 10m · 5

First attributed message: 2026-06-10
Last attributed message: 2026-11-05 05:53 UTC

Observed FT8 message patterns

Attributed sample: 176 messages
Active dates: 32 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -17 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 32, strong (≥ -8 dB) 123.

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 9A4BL in decoded directed-looking exchanges:

OE9GWV · Austria ×2 KB3DQI · United States KQ4MHD · United States IU4SQE · Italy JY5IB · Jordan SQ9TS/P · Poland TN8GD · Republic of the Congo ER1CW · Moldova SP2EWQ · Poland 9A3TGY · Croatia 9H4JX · Malta DK5WL · Fed. Rep. of Germany

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 9A4BL

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: JN75 · 75 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 708 km (approx.)
Last such locator decoded: 2026-11-05 05:53 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	9A4BL S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-03 05:49	60m	+8 / -	SP2EWQ	-2 / +9	4	✓ Full exchange observed
11-03 05:47	60m	+2 / -	6W/IK2HKT	- / -16	2	Partial capture
10-10 08:41	40m	-16 / -	SQ9TS/P	- / -16	5	✓ Closing fragment
09-22 04:55	80m	-12 / -	YV6BXN	- / -21	3	Partial capture
09-14 20:33	80m	- / +6	T77RN	0 / -	2	✓ Closing fragment
09-14 18:06	80m	-4 / -	9H4JX	- / -9	2	✓ Closing fragment
09-11 04:27	80m	-6 / -2	ON1JP	-19 / -19	6	✓ Full exchange observed
09-11 04:24	80m	-10 / -	NE5TX	- / -10	5	✓ Closing fragment
09-11 04:23	80m	-10 / -11	TI5CDA	-19 / -16	4	✓ Full exchange observed
09-11 04:20	80m	- / -17	KZ7Y	-19 / -	2	Partial capture
09-11 04:19	80m	+7 / -	SQ100PKP	- / -17	4	Partial capture
09-11 04:17	80m	+7 / -	KO3ZDE	- / -11	3	✓ Closing fragment
09-08 20:40	80m	- / -9	R5BM	-8 / -	2	✓ Closing fragment
09-08 20:37	80m	-6 / -21	RT6Z	-10 / -8	3	✓ Full exchange observed
09-07 04:44	80m	0 / +2	9A60CBM	+6 / +4	3	Partial capture
09-07 04:29	40m	+1 / -	JY5IB	- / -6	3	✓ Closing fragment
08-31 21:40	60m	- / -	OH3GBW	-16 / -	3	Partial capture
08-31 21:38	60m	-1 / -	ER1CW	- / +5	3	✓ Closing fragment
08-31 21:28	80m	-10 / -10	DK5WL	-2 / -2	3	✓ Full exchange observed
08-31 21:28	80m	-9 / -8	OE9GWV	-13 / -	6	✓ Closing observed
08-31 21:26	80m	-8 / +2	DL1SRS	-14 / -	5	✓ Closing observed
08-31 21:25	80m	-7 / -12	9A3TGY	0 / -7	4	✓ Full exchange observed
08-31 21:21	40m	-3 / -	RI1FJL	- / -13	3	Partial capture
08-31 21:19	40m	-8 / +3	IU4SQE	-10 / +9	3	✓ Full exchange observed
08-21 05:04	20m	+6 / -	KB3DQI	- / -19	4	✓ Closing fragment
08-21 05:00	20m	+10 / -	KQ4MHD	- / -25	4	✓ Closing fragment
08-21 04:58	20m	+6 / -	NL8F	- / -11	2	Partial capture
08-20 04:09	80m	-10 / -	KP2B	- / -	2	Partial capture
08-20 04:06	80m	-4 / -	KP1IIA	- / -	3	Partial capture
08-20 04:05	80m	-4 / -	KP2B	- / -	2	Partial capture
08-15 19:51	80m	-3 / -	T77R	- / -	3	Partial capture
08-13 21:21	40m	-4 / -	TN8GD	- / -10	4	✓ Closing fragment
08-13 21:17	80m	+4 / -	TF4M	- / -16	4	✓ Closing fragment
08-13 03:21	80m	+3 / -	<...>	- / -10	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
212245  +1  368  RI1FJL 9A4BL R-13
042930  +1 1445  JY5IB 9A4BL JN75 (x3)
043445 -19 1410  9A4BL HK3YL -13
164500  -8 2000  R4CHN 9A4BL R-05
165330 -12 2069  CQ 9A4BL JN75
165500 -15 2069  RZ4FWA 9A4BL +07
084145 -15 1504  SQ9TS/P 9A4BL JN75 (x5)
055230  -3 2365  N5RJR 9A4BL JN75
055315  -1 2278  KN4DS 9A4BL JN75

60m

UTC    dB Audio  Message
213815  +0 1695  ER1CW 9A4BL JN75 (x3)
214000 -12 1953  9A4BL OH3GBW KP21 (x3)
054745  -2 1292  6W/IK2HKT 9A4BL JN75 (x2)
054900  -3 1292  9A4BL SP2EWQ JO93
054915  +8 1291  SP2EWQ 9A4BL +09
054930  -4 1293  9A4BL SP2EWQ R+15 (x2)

80m

UTC    dB Audio  Message
042630 -10 1772  NE5TX 9A4BL R-10 (x2)
042715 -19 1554  9A4BL ON1JP -02 (x2)
042800  -6 1771  ON1JP 9A4BL R-19
042815 -22 1555  9A4BL ON1JP RR73
042830  -5 1771  ON1JP 9A4BL RR73
042845 -18 1554  9A4BL ON1JP 73
180645  -3 1905  9H4JX 9A4BL R-09 (x2)
203300  +1  328  9A4BL T77RN R+06 (x2)
045515 -12 1702  YV6BXN 9A4BL -21 (x3)

10m

UTC    dB Audio  Message
105145 -20 1101  YL2JZ 9A4BL JN75

20m

UTC    dB Audio  Message
045830  +4 1201  NL8F 9A4BL JN75 (x2)
050045 +12  554  KQ4MHD 9A4BL JN75 (x4)
050415 +11  552  KB3DQI 9A4BL -19 (x4)

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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