F5SIB — 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: France Most frequent locator attributed to this token: JN18

Receiver-side FT8 activity involving F5SIB, decoded by SO8OO in southeastern Poland. 312 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-14.

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 312 FT8 messages attributed to F5SIB as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (27%), followed by 60 m (27%) and 160 m (18%). Most decodes (77%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -5.4 dB.

Overview

312

Messages attributed

UTC dates decoded

Active 15-min windows

-5.4 dB

Estimated median S/N

Bands

160m · 56 80m · 26 60m · 83 40m · 52 20m · 84 10m · 11

First attributed message: 2026-06-08
Last attributed message: 2026-10-14 20:29 UTC

Observed FT8 message patterns

Attributed sample: 312 messages
Active dates: 25 UTC dates
Estimated median S/N: -5.4 dB
Estimated 10th-90th percentile: -14 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 73, strong (≥ -8 dB) 211.

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 F5SIB in decoded directed-looking exchanges:

F5PBG · France ×2 IS0AFM · Sardinia ×2 N8OQ · United States ×2 OD5KU · Lebanon SV1CQN · Greece CX6VM · Uruguay DF7EF · Fed. Rep. of Germany F4IIX · France HA6NN · Hungary IK4IDY · Italy OK1DXR · Czech Republic W3LL · 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 F5SIB

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: JN18 · 188 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,370 km (approx.)
Last such locator decoded: 2026-10-14 20:19 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	F5SIB S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-14 20:28	160m	-3 / +1	DF7EF	+4 / -1	5	✓ Full exchange observed
10-14 20:24	160m	-10 / -	HA6NN	-8 / -20	8	✓ Closing observed
10-14 20:17	160m	-8 / -	SP9CLQ	0 / -16	8	Partial capture
10-14 20:15	160m	-11 / -	IK4IDY	-12 / -16	3	✓ Closing observed
10-14 19:58	80m	+3 / -13	UN3P	-20 / -	3	Partial capture
10-14 19:50	80m	+5 / -20	JF8QNF	-9 / -15	5	Partial capture
10-13 17:34	40m	+13 / -	ZL1VAH	- / -15	4	✓ Closing fragment
10-13 17:32	40m	+2 / -	OS4K	-13 / -16	3	Partial capture
10-13 17:31	40m	+3 / -	BA5AW	- / -13	3	✓ Closing fragment
10-13 17:29	40m	+8 / -	VJ6X	- / -16	5	✓ Closing fragment
10-13 17:28	40m	-1 / -	BD8ENX	- / -	2	Partial capture
10-04 04:28	60m	-10 / -	9T0MD	- / -4	3	Partial capture
10-04 04:22	60m	-3 / -	9T0MD	- / -	4	Partial capture
10-04 04:04	60m	-5 / -	9T0MD	- / -	3	Partial capture
10-04 04:01	60m	-2 / -	9T0MD	- / -	2	Partial capture
10-04 03:50	60m	-3 / -	9T0MD	- / -22	7	Partial capture
10-04 03:44	60m	-1 / -	9T0MD	- / -	3	Partial capture
10-04 03:41	80m	+6 / -1	C5R	-15 / -11	5	Partial capture
10-04 03:34	60m	-4 / -	9T0MD	- / -	4	Partial capture
10-02 05:23	60m	-12 / -	PE1NPS	- / +3	3	Partial capture
10-02 05:19	60m	- / -	PE1NPS	+4 / -	4	Partial capture
10-02 05:18	60m	-3 / -	CE2SV	- / -14	6	✓ Closing fragment
10-02 05:10	60m	-3 / -	HI3RRR	- / -11	7	Partial capture
10-02 04:35	160m	-18 / -	K9GL	- / -	2	Partial capture
10-02 04:23	160m	-10 / -	K9GL	- / -	2	Partial capture
10-02 04:16	160m	+2 / -	F4IIX	- / -8	2	✓ Closing fragment
10-02 04:12	160m	-4 / -6	YO7BGA	+1 / -8	5	✓ Full exchange observed
10-02 04:09	160m	-1 / -	W3LL	-13 / -8	4	✓ Closing observed
09-23 02:41	60m	0 / -	SQ4PKO	- / -8	2	✓ Closing fragment
09-23 02:12	60m	0 / -24	F1IQH	0 / -11	7	✓ Full exchange observed
09-23 02:12	60m	-5 / -5	OH1LA	-10 / -6	5	✓ Full exchange observed
09-23 01:46	60m	-13 / -	K0TC	- / -	2	Partial capture
09-23 01:13	40m	+9 / -	VA7QI	- / -12	3	Partial capture
09-19 03:21	80m	-5 / -	VE2CKW	- / -	2	Partial capture
09-18 02:59	160m	-8 / -	VP2MAA	- / -	3	Partial capture
09-18 02:42	160m	-12 / -	VP2MAA	- / -	3	Partial capture
09-17 04:11	60m	-6 / -	XE2SSB	- / -	2	Partial capture
09-17 04:08	60m	-13 / 0	IS0AFM	-18 / 0	7	✓ Full exchange observed
09-17 04:04	60m	-8 / -	N4KZ	- / -23	4	✓ Closing fragment
09-16 22:48	160m	-14 / -19	TK/4O7CC	-2 / -14	7	Partial capture
09-16 04:22	80m	-2 / -7	VP2MAA	-8 / -3	6	✓ Full exchange observed
09-16 04:20	80m	-2 / -	NE5TX	- / -	2	Partial capture
09-15 03:21	160m	-12 / -	CX6VM	- / -12	6	✓ Closing fragment
09-13 02:45	40m	- / -10	KE2FP	-3 / -	4	✓ Closing fragment
09-13 02:38	40m	- / -14	KA9FOX	-6 / -	2	✓ Closing fragment
09-02 04:19	160m	- / -4	OK1DXR	-10 / -	5	✓ Closing fragment
09-02 00:03	60m	-19 / +1	PG7R	-10 / 0	5	✓ Full exchange observed
09-02 00:02	60m	-14 / -	N8OQ	- / -10	2	✓ Closing fragment
09-01 23:55	60m	-14 / -	N8OQ	- / -	2	Partial capture
08-31 23:09	40m	+1 / -	RI1FJL	- / -16	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
160645  -2  980  F5SIB SV1CQN -13 (x2)
104300 -11 2565  F5SIB OD5KU 73

160m

UTC    dB Audio  Message
201900  -6 1747  CQ F5SIB JN18
201915  +5 1201  F5SIB SP9CLQ KO00
202445  -8 1684  F5SIB HA6NN JN98 (x5)
202730 -11 2067  HA6NN F5SIB -20 (x2)
202815  +2 2147  F5SIB DF7EF JO30
202830  -8 2066  HA6NN F5SIB RR73
202845  +7 2147  F5SIB DF7EF JO30
202900  -3 2066  DF7EF F5SIB -01
202915  +3 2147  F5SIB DF7EF R+01 (x2)

80m

UTC    dB Audio  Message
034115  +1 2142  C5R F5SIB JN18 (x3)
034230 -15 1626  F5SIB C5R -01
034245 +14 2642  C5R F5SIB R-11
034300 -24 1626  F5SIB RR73; DO7JVW <...> -14
195030  +1 2593  JF8QNF F5SIB JN18 (x2)
195115  -9 2732  F5SIB JF8QNF -20
195200  +8 2657  JF8QNF F5SIB R-15 (x2)
195800  +3 2258  UN3P F5SIB JN18
195815 -20 1631  F5SIB UN3P -13 (x2)
200400  +1 2419  JR4OZR F5SIB JN18

40m

UTC    dB Audio  Message
172900  +6 2667  VJ6X F5SIB JN18 (x5)
173130  +9 2667  BA5AW F5SIB -13 (x2)
173215 -13 1881  F5SIB OS4K +21
173230  +1 2667  BA5AW F5SIB RR73
173330  -1 2667  OS4K F5SIB R-16 (x2)
173445 +12 2673  ZL1VAH F5SIB JN18 (x4)

60m

UTC    dB Audio  Message
035715  +1 1031  9T0MD F5SIB JN18 (x15)

20m

UTC    dB Audio  Message
005930  -6 2852  KD9MGZ F5SIB RR73
010015  -5 2298  F5SIB DL1VCA JO62
010015  +8 2658  F5SIB DL1R JN58
010030  -4 2852  DL1VCA F5SIB -07
010045  +0 2298  F5SIB DL1VCA R+07
010045 +14 2658  F5SIB DL1R JN58
010115  +4 2298  F5SIB DL1VCA 73
010115  +7 2658  F5SIB DL1R JN58 (x2)
010200  -4 2853  DL1R F5SIB -07
010215 +17 2658  F5SIB DL1R JN58 (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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