W9JJ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN31

Receiver-side FT8 activity involving W9JJ, decoded by SO8OO in southeastern Poland. 111 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-20 and 2026-10-02.

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 111 FT8 messages attributed to W9JJ as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (80%), followed by 40 m (20%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

111

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 89 40m · 22

First attributed message: 2026-06-20
Last attributed message: 2026-10-02 01:38 UTC

Observed FT8 message patterns

Attributed sample: 111 messages
Active dates: 11 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -18 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 45, strong (≥ -8 dB) 46.

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 W9JJ in decoded directed-looking exchanges:

KF9TS · United States ×2 OK1DXR · Czech Republic SP3BPU · Poland 8Q7PR · Maldives C5R · The Gambia G5TV · England RG6OO · European Russia RN6HK · European Russia SV9QWC · Crete V51PJ · Namibia VU2MSA · India WB8NXR · 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 W9JJ

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: FN31 · 38 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,913 km (approx.)
Last such locator decoded: 2026-10-02 01:38 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	W9JJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-02 01:36	80m	-16 / -	C5R	- / -	3	Partial capture
10-02 01:20	40m	- / -	DL3MIB	-10 / -	7	Partial capture
10-02 01:19	40m	-18 / -	C5R	- / -20	3	✓ Closing fragment
10-02 01:13	40m	-7 / -	V51PJ	- / -16	3	✓ Closing fragment
10-02 01:12	40m	- / -	RA4FUT	-4 / -	2	Partial capture
10-02 01:11	40m	-7 / -	8Q7PR	-6 / -11	4	✓ Closing observed
10-02 01:09	40m	-5 / -	V51PJ	- / -	2	Partial capture
10-02 01:04	80m	- / -10	SX2LGT	-12 / -	2	Partial capture
10-02 00:57	80m	+4 / -	UR1CCT	- / -26	2	✓ Closing fragment
10-02 00:56	80m	-10 / 0	TF4M	-4 / -11	4	✓ Full exchange observed
10-02 00:52	80m	- / -	DK8HC	+5 / -	5	Partial capture
10-02 00:51	80m	-8 / -13	SP5MXZ	+8 / -16	4	✓ Full exchange observed
10-02 00:49	80m	- / -24	RX6DA	0 / -	26	Partial capture
10-02 00:49	80m	-6 / -13	UA4FKT	+12 / -15	4	✓ Full exchange observed
10-02 00:45	80m	-8 / -5	LY5A	+19 / -5	9	✓ Full exchange observed
10-02 00:43	80m	- / -	UA4HBR	-2 / -	20	Partial capture
10-02 00:37	40m	- / -	RW6MMU	-11 / -	3	Partial capture
10-02 00:35	40m	-5 / -9	RN6HK	+3 / -	8	✓ Closing observed
10-01 01:01	80m	-10 / -	N1KSY	- / 0	4	Partial capture
10-01 00:54	80m	-6 / -	Z61DX	- / -	10	Partial capture
10-01 00:46	40m	-17 / -17	VU2MSA	-24 / -18	4	✓ Full exchange observed
09-29 23:55	80m	- / -	DO5HB	-11 / -	12	Partial capture
09-29 23:53	80m	- / -	SP7ENW	+3 / -	3	Partial capture
09-29 23:49	80m	-4 / -	TN8GD	- / -	5	✓ Closing fragment
09-29 03:27	80m	- / -	YO7LLH	+24 / -	3	Partial capture
09-29 03:25	80m	-7 / -2	SP9JZU	+13 / -6	6	✓ Full exchange observed
09-29 03:24	80m	-10 / -14	SP9KR	+13 / -9	7	✓ Full exchange observed
09-29 03:24	80m	-8 / -	KY6AA	- / -8	2	✓ Closing fragment
09-29 03:24	80m	- / -18	Z33PB	-6 / -	4	Partial capture
09-29 03:21	80m	-10 / -	W9FZ	- / -7	5	✓ Closing fragment
09-28 02:37	80m	-9 / -4	IN3WZS	+10 / -	7	✓ Closing observed
09-28 02:29	80m	- / -19	SP5MXZ	+11 / -	11	Partial capture
09-28 02:27	80m	-9 / -	KF9TS	- / -7	5	✓ Closing fragment
09-28 02:23	80m	-14 / -	OX3AH	- / -19	4	Partial capture
09-28 02:15	80m	- / -17	UR5SG	+18 / -	2	Partial capture
09-28 02:12	80m	-19 / -	OX3AH	- / -19	5	Partial capture
09-26 04:27	160m	- / -	SP3FHV	+2 / -	3	Partial capture
09-26 04:26	160m	- / -	DM5HF	+4 / -	3	Partial capture
09-26 04:25	160m	- / -	DO3VE	-4 / -	4	Partial capture
09-26 04:25	160m	- / -	SP3PLD	+7 / -	3	Partial capture
09-26 04:21	160m	- / -10	DL1RWN	+3 / -	2	Partial capture
09-26 04:20	160m	- / -9	OK1DXR	+8 / -	3	✓ Closing fragment
09-26 04:19	160m	- / +7	SP3BPU	+16 / -	4	✓ Closing fragment
09-26 04:10	80m	-6 / -	EC3A	- / -13	2	✓ Closing fragment
09-26 04:09	80m	-6 / -5	SV8DCY	-8 / -10	5	✓ Full exchange observed
09-26 04:09	80m	-9 / -	LZ1ZM	-1 / -	4	✓ Closing observed
09-26 04:08	80m	- / -	LY1DY	+4 / -	2	Partial capture
09-26 04:08	80m	-9 / -	K5DCW	- / -10	2	✓ Closing fragment
09-26 04:06	80m	-11 / -15	ES2AJ	-2 / -15	5	✓ Full exchange observed
09-25 02:57	80m	- / -26	HF5A	-2 / -	12	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
010100  -2 1314  W9JJ RX6DA KN85 (x2)
010130 -15 2831  W9JJ EI3CTB IO63
010200  -4 1314  W9JJ RX6DA KN85 (x5)
010430 -11 1185  W9JJ SX2LGT -10
010430  -7 1314  W9JJ RX6DA KN85
010500 -13 1185  W9JJ SX2LGT -10
010500  -2 1314  W9JJ RX6DA KN85
013645 -22 2139  C5R W9JJ FN31 (x3)

40m

UTC    dB Audio  Message
011245  -6  997  W9JJ 8Q7PR 73
011300  -9  320  V51PJ W9JJ FN31
011315  -8  320  W9JJ RA4FUT LO23
011330  -7  320  V51PJ W9JJ R-16 (x2)
011915 -20 1554  C5R W9JJ FN31 (x3)
012030 -11 1070  W9JJ DL3MIB JN57 (x7)

160m

UTC    dB Audio  Message
042215  +5 2096  W9JJ DL1RWN -10
042515 +13  943  W9JJ SP3PLD JO72 (x2)
042545 +11 2091  W9JJ IK4ADE JN54
042545  -4  644  W9JJ DO3VE JO52
042615 +10  943  W9JJ SP3PLD JO72
042615  -2  644  W9JJ DO3VE JO52 (x2)
042645  +5 2746  W9JJ DM5HF JO43
042715  -6  644  W9JJ DO3VE JO52
042715  +4 2746  W9JJ DM5HF JO43
042745  +2 1535  W9JJ SP3FHV JO72
042745  +4 2746  W9JJ DM5HF JO43
042815  +3 1535  W9JJ SP3FHV JO72 (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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