7X4BL — 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: Algeria Most frequent locator attributed to this token: IM94

Receiver-side FT8 activity involving 7X4BL, decoded by SO8OO in southeastern Poland. 149 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-10-31.

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 149 FT8 messages attributed to 7X4BL as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (89%), followed by 20 m (11%). Most decodes (81%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (78%); the estimated median was -19 dB.

Overview

149

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

40m · 132 20m · 17

First attributed message: 2026-06-19
Last attributed message: 2026-10-31 22:21 UTC

Observed FT8 message patterns

Attributed sample: 149 messages
Active dates: 19 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 116, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 4.

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 7X4BL in decoded directed-looking exchanges:

OK1WCF · Czech Republic ×2 UA4PCM · European Russia ×2 9A1MM · Croatia IZ5SIH · Italy YV5WL · Venezuela 9A4AA · Croatia CT1AZN · Portugal CT1FSG · Portugal CU5AM · Azores DG0BS · Fed. Rep. of Germany E21AZ · Thailand EA2DR · Spain

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 7X4BL

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: IM94 · 48 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,525 km (approx.)
Last such locator decoded: 2026-10-31 21:11 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	7X4BL S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-03 22:17	40m	- / -	UA3GX	-7 / -	3	Partial capture
11-03 22:11	40m	- / -	UA3GX	-10 / -	2	Partial capture
11-02 23:02	40m	- / -	M7LYG	-9 / -	4	Partial capture
11-02 16:27	40m	- / -	UA4FKT	-7 / -	3	Partial capture
11-02 16:26	40m	- / -13	ON6AO	-9 / -	7	✓ Closing fragment
11-02 16:26	40m	- / -	SM4WWY	-10 / -	2	Partial capture
10-31 22:28	40m	- / -	EA5BLP	-11 / -	2	Partial capture
10-31 22:20	40m	-22 / -17	CU5AM	-8 / -	5	✓ Closing observed
10-31 22:16	40m	- / -	EA5BLP	-7 / -	4	Partial capture
10-31 22:14	40m	- / -	EA5ET	-4 / -	3	Partial capture
10-31 21:06	40m	-16 / -	OH1ZE	- / -10	2	Partial capture
10-31 21:05	40m	- / -	CU5AM	-8 / -	4	Partial capture
10-28 01:21	40m	- / -22	TA3NP	-11 / -	14	✓ Closing fragment
10-28 01:17	40m	- / -	TA3NP	-18 / -	3	Partial capture
10-28 00:55	40m	- / -	G6NBF	-12 / -	6	Partial capture
10-22 00:08	40m	- / -	ON8WR	-16 / -	2	✓ Closing fragment
10-22 00:03	40m	- / -8	F1PBZ	-8 / -	3	✓ Closing fragment
10-21 23:57	40m	- / -	F4MXT/P	-12 / -	2	Partial capture
10-21 23:56	40m	- / -13	W8IW	-14 / -	8	✓ Closing fragment
10-21 23:54	40m	- / -	IK4ANJ	-10 / -	2	Partial capture
10-21 23:17	40m	- / -	EB2EMZ	-17 / -	3	Partial capture
10-20 22:37	40m	-22 / -12	SV7SXE	0 / -	5	✓ Closing observed
10-20 22:35	40m	- / -16	UA3DIB	-16 / -	2	Partial capture
10-19 03:53	40m	- / -	R2AL	-6 / -	3	Partial capture
10-19 03:49	40m	- / -18	SV2AOB	-2 / -	4	Partial capture
10-19 03:43	40m	- / -	UT2AU	+2 / -	2	Partial capture
10-19 03:42	40m	- / -	R6LE	-2 / -	2	Partial capture
10-19 03:37	40m	- / -	AC9C	-9 / -	3	Partial capture
10-19 03:25	40m	-18 / 0	SV8TOZ	-12 / -13	8	✓ Full exchange observed
10-19 03:25	40m	- / -	JY4CI	-20 / -	2	✓ Closing fragment
10-16 23:00	40m	- / -	R4FDK	-11 / -	2	Partial capture
10-16 22:38	40m	-16 / -18	OK1TRJ	0 / -	6	✓ Closing observed
10-15 01:03	40m	- / -	RN6HK	+2 / -	3	Partial capture
10-15 00:58	40m	- / -	UA6AUA	+3 / -	5	Partial capture
10-15 00:43	40m	-17 / -	VE2OPC	- / -11	4	Partial capture
10-15 00:42	40m	-21 / -	KC1GNH	- / -5	2	Partial capture
10-15 00:39	40m	-16 / -	KS9J	- / +5	3	✓ Closing fragment
10-15 00:36	40m	-13 / -	K8ATL	- / -	5	✓ Closing fragment
10-15 00:33	40m	-18 / -	R3SN	- / -12	2	✓ Closing fragment
10-15 00:31	40m	-17 / -23	UB4CGR	-5 / -12	3	Partial capture
10-15 00:13	40m	-22 / -	RA6FC	-4 / -	3	✓ Closing observed
10-15 00:09	40m	-24 / -24	TA2VUZ	-14 / -10	3	✓ Full exchange observed
10-14 23:52	40m	- / -	RL3T	-4 / -	3	Partial capture
10-14 23:43	40m	- / -19	E21AZ	-19 / -	2	✓ Closing fragment
10-14 23:43	40m	- / -16	WZ8S	-8 / -	2	Partial capture
10-14 23:40	40m	-24 / -	F4BYA	+13 / +1	6	Partial capture
10-14 00:47	40m	-14 / -	9A2WA	- / +1	2	Partial capture
10-14 00:44	40m	- / -19	SV1MOZ	-12 / -	4	✓ Closing fragment
10-14 00:42	40m	-18 / -	UA4PCM	-17 / -	4	✓ Closing observed
10-14 00:38	40m	-17 / -10	WF2A	-14 / -6	10	✓ 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
162815  -6 1724  7X4BL UA4FKT LO23
162815  -8 2382  7X4BL ON6AO R-13 (x3)
224845 -18 1424  7X4BL NP4PR FK68
230215  -2 1369  7X4BL M7LYG IO93 (x4)
221100  -9 2456  7X4BL UA3GX KO92
221100  -9 1485  7X4BL M0LUX JO01
221130 -10 2456  7X4BL UA3GX KO92 (x4)

80m

UTC    dB Audio  Message
224230  +9 1752  7X4BL 9A4ZM JN86 (x3)
211245 -21  982  7X4BL G3PMY -11 (x2)
214045  -4  200  7X4BL SP6MAA JO90 (x9)

20m

UTC    dB Audio  Message
012145 -19 1139  CQ 7X4BL IM94 (x4)
063230 +17 1153  7X4BL IZ2CPP JN45
063430 -15 1152  7X4BL 9A1MM 73
063800  -4 1747  7X4BL F4HSB JN37 (x3)
064400  -4  704  7X4BL IZ5SIH JN53
064400  -4 1819  7X4BL DL2DT JN49
064430  +1  704  7X4BL IZ5SIH JN53
064430  -6 1819  7X4BL DL2DT JN49
064500  -6  704  7X4BL IZ5SIH R-07 (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.

CW

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

Explore CW reception at SO8OO

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