F5BRF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: IN95

Receiver-side FT8 activity involving F5BRF, decoded by SO8OO in southeastern Poland. 1,012 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 50 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-10.

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 1,012 FT8 messages attributed to F5BRF as the transmitting token by decoded message structure across 50 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 60 m (38%) and 20 m (8%). Most decodes (89%) 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 -16 dB.

Overview

1,012

Messages attributed

UTC dates decoded

154

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 515 60m · 386 40m · 34 20m · 77

First attributed message: 2026-06-12
Last attributed message: 2026-09-10 03:25 UTC

Observed FT8 message patterns

Attributed sample: 1,012 messages
Active dates: 50 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -23 to -8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 548, moderate (-15 to -9 dB) 342, strong (≥ -8 dB) 122.

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 F5BRF in decoded directed-looking exchanges:

DF9JL · Fed. Rep. of Germany ×2 F1SZC · France ×2 F8BJK/P · France ×2 AC9KH · United States OM5JG · Slovak Republic DL2VN · Fed. Rep. of Germany UT7UJ · Ukraine F4GAJ · France DK5WL · Fed. Rep. of Germany DL1YAU · Fed. Rep. of Germany KD9VGL · United States GW3TYI · Wales

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 F5BRF

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: IN95 · 712 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,767 km (approx.)
Last such locator decoded: 2026-09-10 03:25 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	F5BRF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 03:22	60m	-17 / -	OK1GK	- / 0	2	✓ Closing fragment
09-10 03:18	60m	-19 / -	VE3ARF	- / -6	3	Partial capture
09-10 03:09	80m	-12 / -8	DH5BM	-7 / -4	3	Partial capture
09-09 03:52	80m	-10 / -16	OK2PM	-20 / -21	6	✓ Full exchange observed
09-09 03:43	80m	-9 / -13	UT4NL	+3 / -14	5	✓ Full exchange observed
09-09 03:41	80m	-10 / -19	YO3GNF	-10 / -14	4	✓ Full exchange observed
09-09 03:40	80m	- / -5	F1PBZ	+4 / -	2	Partial capture
09-09 03:38	80m	- / -	US2YW	+2 / -	4	Partial capture
09-09 03:35	80m	-12 / -	W4IPC	- / -19	5	✓ Closing fragment
09-09 03:34	80m	-8 / -7	DG7NFX	-8 / -6	5	✓ Full exchange observed
09-09 03:33	80m	- / -	ON4MAP	-23 / -	3	Partial capture
09-09 03:28	80m	- / -2	ON1JP	-21 / -	3	Partial capture
09-09 03:28	80m	-12 / -	DL1KYF/P	- / -	8	Partial capture
09-09 03:27	80m	- / -	US2YW	+5 / -	3	Partial capture
09-09 03:23	60m	- / -	HA7TM	-5 / -	3	Partial capture
09-09 03:21	60m	-8 / -11	DK7UY	-17 / -9	5	✓ Full exchange observed
09-09 03:19	60m	-6 / -	N2JJ	- / -	2	Partial capture
09-09 03:17	60m	-8 / -	VE2JCW	- / -7	3	✓ Closing fragment
09-09 03:15	60m	-2 / -	N4QQ	- / -9	2	Partial capture
09-09 03:13	60m	-1 / -	KQ4ZCH	- / -12	3	Partial capture
09-09 03:11	60m	-2 / -	W2TAD	- / 0	4	Partial capture
09-09 03:10	60m	- / -	LZ2KV	+6 / -	2	Partial capture
09-09 03:07	60m	-7 / -	OE8DDX	- / -1	3	✓ Closing fragment
09-09 03:05	60m	-8 / -	UR9QQ	- / -16	3	✓ Closing fragment
09-09 03:03	60m	-14 / -	K4RCW	- / -16	2	Partial capture
09-09 03:02	60m	-20 / -	KP4CC	- / -20	2	✓ Closing fragment
09-08 03:18	80m	-13 / -	NN2D	- / -	2	Partial capture
09-07 04:04	60m	- / -13	EC3A	-13 / -	2	Partial capture
09-07 04:01	60m	- / -	HA7TM	+5 / -	3	Partial capture
09-07 03:57	60m	-23 / -	VE3RUB	- / -8	5	✓ Closing fragment
09-07 03:44	60m	-12 / +2	MI0OBC	-10 / -10	3	Partial capture
09-07 03:40	60m	- / -	LZ1GC	+12 / -	2	Partial capture
09-07 03:39	60m	- / -	HA7TM	+3 / -	3	Partial capture
09-07 03:29	60m	- / -	HA7TM	+12 / -	3	Partial capture
09-07 03:26	60m	-15 / -	KC8VMG	- / -12	2	✓ Closing fragment
09-07 03:24	60m	-18 / -	K1WAT	- / -4	2	✓ Closing fragment
09-07 03:22	60m	-15 / -2	IK2XDE	-4 / +2	5	✓ Full exchange observed
09-07 03:21	60m	-14 / -	WQ5L	- / -21	2	✓ Closing fragment
09-07 03:20	60m	- / -	HA7TM	+10 / -	3	Partial capture
09-07 03:17	60m	-15 / -	WB4HAM	- / -8	5	✓ Closing fragment
09-07 03:16	60m	-12 / -2	LZ1ST	0 / -3	4	✓ Full exchange observed
09-07 03:15	60m	- / -	HA7TM	+10 / -	3	Partial capture
09-05 06:31	60m	- / -10	DF0AWG	+1 / -	3	✓ Closing fragment
09-05 06:23	60m	- / -2	F1IQH	-17 / -	3	✓ Closing fragment
09-05 01:48	80m	- / -12	DO3KTY	+8 / -	2	Partial capture
09-05 01:46	80m	-16 / -17	YO9HP	+3 / -11	4	✓ Full exchange observed
09-05 01:41	80m	-15 / -8	3Z100PKP	+8 / -	3	Partial capture
09-05 01:01	60m	-18 / -	N4KG	- / -21	2	✓ Closing fragment
09-05 00:59	60m	-14 / -	KD9VGL	- / -15	2	✓ Closing fragment
09-04 02:50	80m	-17 / -3	R2EA	-16 / -21	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
032300  -4  589  F5BRF HA7TM JN97
032315 -10  588  CQ F5BRF IN95
032330  -4  588  F5BRF HA7TM JN97 (x2)
032415 -10  588  CQ F5BRF IN95 (x2)
031830 -17 2235  VE3ARF F5BRF IN95 (x3)
032200 -18 2235  CQ F5BRF IN95
032230 -19 2235  OK1GK F5BRF R+00 (x2)
032430 -16 2235  CQ F5BRF IN95                         a1 (x3)

80m

UTC    dB Audio  Message
035045 -16  557  CQ F5BRF IN95 (x3)
035200 -22  985  F5BRF OK2PM JN89
035215 -11  557  CQ F5BRF IN95
035230 -21  985  F5BRF OK2PM JN89
035245  -7  557  OK2PM F5BRF -21
035300 -19  985  F5BRF OK2PM R-16
035315 -12  557  OK2PM F5BRF RR73
035330 -18  985  F5BRF OK2PM 73
035415  -8  557  CQ F5BRF IN95 (x2)
030930 -11 2205  F5BRF DH5BM JO41
030945 -12 2205  DH5BM F5BRF -04
031000  -3 2205  F5BRF DH5BM R-08

40m

UTC    dB Audio  Message
032230 -14 1476  CQ F5BRF IN95                         a1
040230 -23 1296  SP7SZJ F5BRF -08
040315 -17 1530  F5BRF IZ8PPI -19 (x2)
040530 -24 1302  W4CHA F5BRF IN95
040815 -15 1345  F5BRF PV8AJ -16
042300 -20 1292  CQ F5BRF IN95 (x3)
005945 -12 2626  SP7TF F5BRF 73
010030  -8 1180  F5BRF RX3ASQ KO95
010045  -8 2625  CQ F5BRF IN95
010100 -11 1180  F5BRF RX3ASQ KO95
011730 -11 2625  CQ F5BRF IN95
011900  -7 2625  PP2RON F5BRF IN95

20m

UTC    dB Audio  Message
121515 +15 2911  F5BRF F4BYA JN19 (x12)
122900 -24 2027  CQ F5BRF IN95 (x3)

10m

UTC    dB Audio  Message
145400 -11 1006  F5BRF DO2DK JO30

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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