9A7BB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving 9A7BB, decoded by SO8OO in southeastern Poland. 6,795 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 48 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-08.

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 6,795 FT8 messages attributed to 9A7BB as the transmitting token by decoded message structure across 48 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (76%), followed by 60 m (13%) and 80 m (8%). Most decodes (71%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.6 dB.

Overview

6,795

Messages attributed

UTC dates decoded

491

Active 15-min windows

-9.6 dB

Estimated median S/N

Bands

80m · 559 60m · 904 40m · 5,139 20m · 83 10m · 110

First attributed message: 2026-06-06
Last attributed message: 2026-09-08 06:31 UTC

Observed FT8 message patterns

Attributed sample: 6,795 messages
Active dates: 48 UTC dates
Estimated median S/N: -9.6 dB
Estimated 10th-90th percentile: -18 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1,397, moderate (-15 to -9 dB) 2,316, strong (≥ -8 dB) 3,082.

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 9A7BB in decoded directed-looking exchanges:

ON4MAP · Belgium ×5 HA3GX · Hungary ×5 UR4LG · Ukraine ×3 F1IQH · France ×3 UA9SY · Asiatic Russia ×3 HF5A · Poland ×3 TA2ED · Asiatic Turkey ×3 SP5DUJ · Poland ×3 SP7SZJ · Poland ×2 OK1DBE · Czech Republic ×2 IU3QCG · Italy ×2 JA4FKX · Japan ×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 9A7BB

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 · 4,510 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 708 km (approx.)
Last such locator decoded: 2026-09-08 06:31 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	9A7BB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 06:24	80m	-24 / -20	3Z100PKP	-3 / -8	2	Partial capture
09-08 06:18	80m	-24 / -	DF0AWG	- / -	3	Partial capture
09-08 06:15	80m	-21 / -8	DL8WEM	-23 / -7	5	✓ Full exchange observed
09-08 06:09	80m	- / -	DH5NC	-14 / -	2	✓ Closing fragment
09-08 05:56	80m	-24 / -	SN100PKP	- / -5	2	Partial capture
09-08 05:51	80m	-23 / -	DO1ID	- / -	8	Partial capture
09-08 05:39	80m	-22 / -5	DM5CF	-4 / -6	4	✓ Full exchange observed
09-08 05:35	80m	-22 / -18	LZ1VVD	-20 / -21	4	✓ Full exchange observed
09-08 05:32	80m	-22 / -	I8JPO	- / -13	2	✓ Closing fragment
09-08 05:27	80m	- / -14	DO1FZL	-6 / -	3	✓ Closing fragment
09-08 05:24	80m	- / -19	DA1ST	0 / -	4	✓ Closing fragment
09-08 04:51	80m	-14 / -	IK5ZTT	- / -4	2	✓ Closing fragment
09-08 04:44	80m	-17 / -8	PA3EVY	+3 / -	7	✓ Closing observed
09-08 04:35	80m	-7 / -	SP5DFK/QRP	- / -13	2	Partial capture
09-08 04:35	80m	- / -16	SN40KZE	-2 / -	2	Partial capture
09-08 04:33	80m	-22 / -	K4BQP/4	- / -	3	Partial capture
09-08 04:29	80m	-16 / -13	MI0NWA	-7 / -6	3	Partial capture
09-08 04:27	80m	-13 / -	HA3HX	- / 0	3	✓ Closing fragment
09-08 04:25	80m	-18 / +5	OK4KOP	+10 / -	5	✓ Closing observed
09-06 14:05	40m	-10 / -	SP3GHC	- / -	10	Partial capture
09-06 14:04	40m	-3 / -	SV2KD	- / -	2	Partial capture
09-06 14:01	40m	-7 / -	OZ1BWX	- / -15	2	✓ Closing fragment
09-06 14:00	40m	-8 / -	LZ1MCN	- / -15	2	✓ Closing fragment
09-06 13:53	40m	-6 / -	HB0/DL5RMH	- / -9	6	Partial capture
09-06 13:51	40m	-3 / -	DK4RH	- / -	5	Partial capture
09-06 13:48	40m	+2 / +10	DK3HJ	-14 / 0	3	✓ Full exchange observed
09-06 13:43	40m	-8 / -	DF0NN	- / -	2	✓ Closing fragment
09-06 13:40	40m	-4 / -	PD4HT	- / -6	4	✓ Closing fragment
09-06 13:38	40m	-4 / -	F4FVH/P	- / -10	4	✓ Closing fragment
09-06 13:36	40m	-4 / -	PD4HT	- / -	2	Partial capture
09-06 13:34	40m	-2 / -	ON4CJU	- / -4	2	✓ Closing fragment
09-06 13:30	40m	-4 / -1	SQ9RKE	-10 / -3	6	✓ Full exchange observed
09-06 13:24	40m	-16 / +1	DL8NCV	-12 / -6	5	✓ Full exchange observed
09-06 13:21	40m	-13 / -14	OZ9FF	-8 / -6	5	✓ Full exchange observed
09-06 13:18	40m	-16 / -14	SP3NGI	+6 / -	4	✓ Closing observed
09-06 13:15	40m	-17 / +3	SQ2HEX	-10 / -12	8	✓ Full exchange observed
09-06 13:12	40m	-19 / -	SP6EFY	- / -	2	Partial capture
09-06 13:09	40m	-18 / -	SP7SZJ	0 / -7	3	✓ Closing observed
09-06 11:24	40m	-18 / -	DG5NAB	- / -17	5	✓ Closing fragment
09-06 11:22	40m	-16 / -10	SP7MAZ	-10 / -13	5	✓ Full exchange observed
09-06 11:19	40m	-19 / -	OU7M/P	- / -	3	✓ Closing fragment
09-06 10:55	40m	-17 / -15	DD9MI	-22 / -	2	✓ Closing observed
09-06 10:48	40m	-14 / -	OZ7SKB/P	-22 / -13	4	✓ Closing observed
09-06 10:29	40m	-4 / -	OU7K/P	-8 / -24	3	✓ Closing observed
09-06 10:16	40m	-12 / -	SP7VCL	-3 / -	2	✓ Closing observed
09-06 09:58	40m	-15 / -	OZ2NYB/P	- / -	3	Partial capture
09-06 09:42	40m	-12 / -4	DK6WH	-8 / -5	6	✓ Full exchange observed
09-06 09:37	40m	-17 / -15	DG9ZL	-18 / -2	11	✓ Full exchange observed
09-06 09:32	40m	-23 / 0	HA3HZ	-6 / -1	5	✓ Full exchange observed
09-06 09:29	40m	-24 / -7	SQ6WA	0 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
061515 -20 1760  DL8WEM 9A7BB JN75 (x2)
061600 -24 1447  9A7BB DL8WEM -08
061615 -20 1760  DL8WEM 9A7BB R-07
061630 -22 1446  9A7BB DL8WEM RR73
061715 -24 1760  CQ 9A7BB JN75 (x2)
061815 -24 1760  DF0AWG 9A7BB JN75 (x3)
062415 -24 1760  <3Z100PKP> 9A7BB R-08
062430  -3 1646  9A7BB 3Z100PKP -20 (x2)
063115 -23 1321  CQ 9A7BB JN75
064900 -17 1970  9A7BB IW2CNR -08

40m

UTC    dB Audio  Message
140245  -5  701  CQ 9A7BB JN75 (x3)
140415  -2  701  SV2KD 9A7BB JN75 (x2)
140515  -5  701  SP3GHC 9A7BB JN75 (x10)

60m

UTC    dB Audio  Message
070830 -22 1981  CQ 9A7BB JN75                         a1 (x2)
070930 -21 1981  LA1QRO 9A7BB R-19 (x2)
071130 -20 1981  CQ 9A7BB JN75 (x4)
071730 -24 1981  GW0KQX 9A7BB RR73
071900 -22 1981  CQ 9A7BB JN75 (x6)

20m

UTC    dB Audio  Message
212830 -16 1789  9A7BB IK5NKX JN53 (x5)
071730 -21 1144  HK3W 9A7BB JN75 (x2)
083615  -4 1609  9A7BB TM69TFR -10 (x3)
092100 -22 1985  9A7BB IZ3AMA JN65
095615  -3 2325  9A7BB TM84TFR -03
073700 -22 2084  9A7BB EA4ZM +03 (x3)

10m

UTC    dB Audio  Message
085700 +12  831  9A7BB M0BEW RR73
115600  +1 2720  9A7BB PD9FLX JO22 (x2)
115700 -24 1731  9A7BB ON6CQ JO11
115700  -1 2720  9A7BB PD9FLX 73
115730 -24 1731  9A7BB ON6CQ JO11 (x2)
125900 -17 1593  9A7BB SM6DVJ -17 (x2)
130400 -15 1026  9A7BB MW9LQA -11 (x2)
131200 -20 2189  9A7BB PE1KYP R-06 (x2)
141300 -23 1812  9A7BB DL8BZ JO42 (x2)

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.

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