F5RRS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN36

Receiver-side FT8 activity involving F5RRS, decoded by SO8OO in southeastern Poland. 42,172 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 95 UTC dates in the available aggregate history. Observed between 2026-06-06 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 42,172 FT8 messages attributed to F5RRS as the transmitting token by decoded message structure across 95 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (41%), followed by 40 m (37%) and 80 m (14%). The busiest six-hour window was 19:00-01:00 UTC, containing 41% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -6.9 dB.

Overview

42,172

Messages attributed

UTC dates decoded

4,333

Active 15-min windows

-6.9 dB

Estimated median S/N

Bands

160m · 1,452 80m · 5,866 60m · 1,263 40m · 15,533 20m · 17,239 10m · 819

First attributed message: 2026-06-06
Last attributed message: 2026-09-10 13:14 UTC

Observed FT8 message patterns

Attributed sample: 42,172 messages
Active dates: 95 UTC dates
Estimated median S/N: -6.9 dB
Estimated 10th-90th percentile: -18 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7,563, moderate (-15 to -9 dB) 10,712, strong (≥ -8 dB) 23,897.

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 F5RRS in decoded directed-looking exchanges:

CT2GQA · Portugal ×21 SQ8AA · Poland ×16 HA3GX · Hungary ×14 ON1BH · Belgium ×8 DK0ACI · Fed. Rep. of Germany ×7 R5AV · European Russia ×7 TA3XEE · Asiatic Turkey ×6 DL9KM · Fed. Rep. of Germany ×6 ON4MAP · Belgium ×5 EA3RO · Spain ×5 DF4FS · Fed. Rep. of Germany ×4 UA6HFI · European Russia ×4

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 F5RRS

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: JN36 · 30,744 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,158 km (approx.)
Last such locator decoded: 2026-09-10 13:14 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	F5RRS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 12:58	40m	-9 / -	PD4WAC	- / -14	5	✓ Closing fragment
09-10 12:51	40m	-8 / -7	DG1SCD	-12 / -20	5	✓ Full exchange observed
09-10 12:49	40m	-8 / -17	G0OFD	-10 / -	3	✓ Closing observed
09-10 12:44	40m	-10 / -	DL5PF/P	- / -	3	Partial capture
09-10 12:15	40m	-21 / -	DK3RV	- / -5	2	✓ Closing fragment
09-10 12:09	40m	-19 / -	DK0NL	- / -	4	Partial capture
09-10 12:04	40m	-20 / -	MW0JTZ	- / -	2	Partial capture
09-10 10:28	40m	-22 / -	DL2RAB	- / -	2	Partial capture
09-10 10:13	40m	-10 / -	OK8SAX	- / -	4	Partial capture
09-10 09:22	40m	-10 / -	PA1KEK	- / -13	3	✓ Closing fragment
09-10 09:07	40m	-10 / -	G4SFS	- / -	3	Partial capture
09-10 09:04	40m	-12 / -	GW6OHV	- / -	2	Partial capture
09-10 08:59	40m	- / -19	RJ6ON	-12 / -	2	Partial capture
09-10 08:38	40m	-16 / -	F5GNR	- / -	4	Partial capture
09-10 08:27	40m	-20 / -	PI4TS	- / -13	2	✓ Closing fragment
09-10 08:04	40m	-18 / -	M8BAF	- / -20	4	✓ Closing fragment
09-10 08:01	40m	-18 / -	G6ZRV	- / -6	2	✓ Closing fragment
09-10 07:55	40m	-20 / -	SP9PEZ	- / -18	6	✓ Closing fragment
09-10 07:48	40m	-20 / -	M0KCB/P	- / -21	2	✓ Closing fragment
09-10 07:37	40m	-20 / -	G3RTE	- / -	4	Partial capture
09-10 07:36	40m	-18 / -	DK0NL	- / -	2	Partial capture
09-10 07:33	40m	-20 / -	PD4PMS	-24 / -2	2	✓ Closing observed
09-10 07:29	40m	-14 / -	PA7AK/P	- / -	4	Partial capture
09-10 07:21	40m	0 / -	F3CJ	- / -16	2	✓ Closing fragment
09-10 07:00	40m	-22 / -	W5AIM	- / -	2	Partial capture
09-10 06:58	40m	-16 / -	DM7ZZ	- / -	2	Partial capture
09-10 06:56	40m	-15 / -	W2ARP	- / -20	3	Partial capture
09-10 06:41	40m	-12 / -2	LA9IX	-21 / -12	5	Partial capture
09-10 06:38	40m	-16 / -	G5STU	- / -7	2	✓ Closing fragment
09-10 06:29	40m	-10 / -	GW6OHV	- / -	4	Partial capture
09-10 06:13	40m	-18 / -14	I5JFG	-4 / -	4	✓ Closing observed
09-10 06:11	40m	-17 / -4	OE2JKN	+2 / -19	4	✓ Full exchange observed
09-10 06:00	40m	-8 / -	KE9COB	- / -	3	Partial capture
09-10 05:57	40m	-10 / -	G1VHD	- / -	4	Partial capture
09-10 05:54	40m	-4 / -	K1FEV	- / -18	3	✓ Closing fragment
09-10 05:52	40m	-9 / -	W6VM	- / -17	3	✓ Closing fragment
09-10 05:49	40m	-8 / -3	PA2KW	+14 / -5	6	✓ Full exchange observed
09-10 05:47	40m	-4 / -	IZ0HEI	- / -	3	Partial capture
09-10 05:45	40m	-4 / -	E79KO	- / -	2	Partial capture
09-10 05:38	80m	-9 / -	F5NIB	- / -	4	Partial capture
09-10 05:34	80m	-7 / -	EA2ARU	- / -15	7	✓ Closing fragment
09-10 05:30	80m	-18 / -	DJ2CR	- / -	2	Partial capture
09-10 05:28	80m	-4 / -	ON7GB	- / -	4	Partial capture
09-09 22:22	40m	-4 / -	WB4DCM	- / -18	6	✓ Closing fragment
09-09 22:19	40m	-4 / -	BA7IWL	- / -20	3	✓ Closing fragment
09-09 22:17	40m	+2 / -	KA3YJM	- / -18	3	✓ Closing fragment
09-09 22:16	40m	-15 / -	IU2LVV	- / -17	3	✓ Closing fragment
09-09 22:14	40m	-17 / -	K1VVM	- / -	3	Partial capture
09-09 22:12	40m	-18 / -	EA8BIA	- / -	4	Partial capture
09-09 22:09	40m	-2 / -	7Z1BQ	- / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
125500  -9  542  CQ F5RRS JN36 (x2)
125800  -7  552  PD4WAC F5RRS JN36 (x5)
130300  -3  552  CQ F5RRS JN36 (x8)

80m

UTC    dB Audio  Message
053415  -5 1994  EA2ARU F5RRS JN36 (x7)
053815 -12 1994  F5NIB F5RRS JN36 (x4)
060245 -16 1994  CQ F5RRS JN36 (x4)

160m

UTC    dB Audio  Message
203115 -16 1915  9A5AFP F5RRS JN36
203215  -4 1185  F5RRS 4U1A -01 (x2)
203415 -14  787  F5RRS F4ISR RR73
203930 -10 1915  DK2FM F5RRS JN36 (x2)
213700 -13 1915  CQ F5RRS JN36
213845 -17 1749  F5RRS DA1KL +02
213845 -18 1913  F5RRS IU3RRX JN55
213900  -6 1915  DA1KL F5RRS R-06
213915 -10 1748  F5RRS DA1KL RR73
213930  -9 1915  DA1KL F5RRS 73
220500 -10 1915  CQ F5RRS JN36
220515  +2 2697  F5RRS R5BM KO85 (x2)

60m

UTC    dB Audio  Message
015445  +3 2021  VE3RUB F5RRS JN36 (x5)
015800  -4 2021  VE3RDI F5RRS JN36 (x5)
032030  +3 2021  CQ F5RRS JN36
032100  +2 2021  TA2WSE F5RRS JN36 (x2)
032430  +2 2022  VE2KTF F5RRS 73
035130  +1 2021  CQ F5RRS JN36

10m

UTC    dB Audio  Message
120945 -15 1790  DL1ARK/P F5RRS R-15 (x3)
121115 -17 1791  YO5OKM F5RRS JN36 (x3)
121245 -16 1790  DL1ARK/P F5RRS -14 (x2)
121415 -18 1791  DM5ME F5RRS JN36 (x2)
134815 -19 1856  LZ1EV F5RRS JN36
174345 -23 1891  CQ F5RRS JN36 (x4)

20m

UTC    dB Audio  Message
095745 -20 1981  DJ9UN F5RRS R-19 (x4)
100000 -19 1981  PD3RH F5RRS JN36
100215 -23 1981  ES7KEW F5RRS JN36 (x2)
101400 -24 1981  SG6AVB F5RRS JN36
101745 -23 1980  9A4LT F5RRS JN36
102815 -19 1981  SP3UCN F5RRS JN36 (x3)
105200 -22 1981  M7NXS F5RRS JN36 (x2)
105730 -24 1981  DH8KAM F5RRS JN36

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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