F5BOY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN35

Receiver-side FT8 activity involving F5BOY, decoded by SO8OO in southeastern Poland. 172 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-31.

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 172 FT8 messages attributed to F5BOY as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (49%), followed by 40 m (31%) and 80 m (17%). The busiest six-hour window was 18:00-00:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

172

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 29 40m · 54 20m · 84 10m · 5

First attributed message: 2026-06-08
Last attributed message: 2026-08-31 20:52 UTC

Observed FT8 message patterns

Attributed sample: 172 messages
Active dates: 12 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -20 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 45, moderate (-15 to -9 dB) 47, strong (≥ -8 dB) 80.

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 F5BOY in decoded directed-looking exchanges:

CS2WWA · Portugal ×3 II3WWA · Italy ×3 TM2WWA · France ×3 GB2WWA · England ×2 II5WWA · Italy ×2 OH5WWA · Finland ×2 OL6WWA · Czech Republic ×2 II0WWA · Italy ×2 5P1KZX · Denmark ×2 II7WWA · Italy EA1IOK · Spain F6BPZ · France

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 F5BOY

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: JN35 · 114 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,209 km (approx.)
Last such locator decoded: 2026-08-31 20:52 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	F5BOY S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 20:49	80m	-9 / -4	5P1KZX	-10 / -11	5	✓ Full exchange observed
08-31 20:48	80m	- / -	DO9BAU	+6 / -	13	Partial capture
08-31 20:46	80m	-12 / -13	CT7AIU	-10 / +2	5	✓ Full exchange observed
08-30 21:24	40m	+4 / -	TN8GD	- / -11	6	✓ Closing fragment
08-30 21:22	40m	0 / -2	HB9HRR	-10 / -5	5	✓ Full exchange observed
08-30 21:21	40m	- / +5	ZA/IK3BNO	-10 / -	2	Partial capture
08-30 21:16	40m	+1 / -	TN8GD	- / -	2	Partial capture
08-30 21:12	40m	0 / -	<...>	- / -	8	Partial capture
08-30 21:01	40m	+4 / -	RI1FJL	- / -7	6	Partial capture
08-30 20:54	40m	- / -	F4MID	-20 / -	2	Partial capture
08-08 15:41	20m	-1 / -	TJ1GD/P	- / -25	8	Partial capture
08-08 15:19	20m	-6 / -	TJ1GD/P	- / -	14	Partial capture
07-04 20:20	80m	- / -5	SN4WWA	+5 / -	2	✓ Closing fragment
07-04 16:21	40m	- / -	DK8EW	-11 / -	3	Partial capture
07-04 15:55	40m	-24 / -	II3WWA	-7 / -	2	✓ Closing observed
07-04 15:52	40m	-22 / -	II0WWA	- / +1	2	✓ Closing fragment
07-04 14:43	20m	- / +3	GB2WWA	-16 / -	2	✓ Closing fragment
07-04 14:33	20m	- / -17	F6BPZ	-16 / -	2	✓ Closing fragment
07-03 18:28	40m	-21 / -	II3WWA	-20 / -5	2	Partial capture
07-03 12:21	20m	- / -24	II3WWA	-20 / -	3	✓ Closing fragment
07-02 23:32	40m	- / -	PD0IFI	+2 / -	2	Partial capture
07-02 23:30	40m	-11 / -	OH5WWA	-15 / -13	7	✓ Closing observed
07-02 23:28	40m	-10 / -	CS2WWA	- / -10	3	✓ Closing fragment
07-02 23:28	40m	- / -	PD0IFI	-8 / -	3	Partial capture
07-02 23:27	40m	-8 / -	OL6WWA	-6 / +1	4	✓ Full exchange observed
07-02 23:25	40m	-14 / -	II0WWA	-18 / -	2	✓ Closing observed
07-02 23:22	40m	-15 / -	CR2WWA	- / -22	3	✓ Closing fragment
07-02 23:21	40m	-12 / -	OH5WWA	- / -	2	Partial capture
07-02 23:15	80m	-13 / -	TM2WWA	-3 / -	9	✓ Closing observed
07-02 23:13	80m	-17 / -14	SN0WWA	+1 / -10	4	Partial capture
07-02 23:12	80m	-13 / -10	UA4FKT	+7 / -2	7	✓ Full exchange observed
07-02 23:10	80m	-18 / -	CS2WWA	-24 / -4	4	✓ Closing observed
07-02 23:08	80m	-8 / -	SN4WWA	- / -9	2	Partial capture
07-02 23:06	80m	0 / -	SN0WWA	- / -	2	Partial capture
07-02 21:11	40m	- / -	TM2WWA	-5 / -	2	✓ Closing fragment
07-02 21:09	40m	- / -4	II3WWA	-20 / -	2	✓ Closing fragment
07-02 21:07	40m	- / -	9A3AUH	-10 / -	2	Partial capture
07-02 21:06	40m	- / +5	GB2WWA	-10 / -	2	✓ Closing fragment
07-02 21:02	40m	- / -3	TM8WWA	-12 / -	2	Partial capture
06-30 11:21	20m	-8 / -	II0WWA	- / -	5	Partial capture
06-30 11:18	20m	-6 / -	R2EA/P	- / -4	2	✓ Closing fragment
06-30 11:16	20m	-8 / -	II4WWA	- / 0	3	✓ Closing fragment
06-30 10:17	20m	-10 / -	OL6WWA	+1 / -	4	✓ Closing observed
06-30 07:05	20m	-1 / -4	TM2WWA	-12 / -21	2	Partial capture
06-30 07:04	20m	-2 / -	EA1IOK	-9 / -	3	✓ Closing observed
06-30 06:58	20m	-5 / -	OH5WWA	- / +4	8	✓ Closing fragment
06-29 18:06	40m	-21 / -	TM2WWA	-17 / +6	5	✓ Closing observed
06-29 16:56	20m	-19 / -	EH5WWA	- / -	4	Partial capture
06-29 16:53	20m	-17 / -1	SN0WWA	-5 / +1	3	Partial capture
06-29 16:52	20m	-19 / -	EH5WWA	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
204945 -11  266  F5BOY 5P1KZX RR73
205000  +6 2502  F5BOY DO9BAU JO62
205000 -12 1007  5P1KZX F5BOY 73
205030  +3 2502  F5BOY DO9BAU JO62 (x4)
205215 -12 1007  MW0DNF F5BOY JN35
205230  +6 2502  F5BOY DO9BAU JO62 (x5)
212200  +5 2379  F5BOY 4O7CC -12
212230  +2 2378  F5BOY RR73; LZ2CC <...> -14

40m

UTC    dB Audio  Message
212100  -7  542  F5BOY ZA/IK3BNO +05 (x2)
212145  -5 1222  <...> F5BOY R+01
212230 -12 1222  F5BOY HB9HRR JN47
212245  +1 1222  HB9HRR F5BOY -05
212300  -9 1222  F5BOY HB9HRR R-02
212315  -1 1222  HB9HRR F5BOY RR73
212330 -10 1222  F5BOY HB9HRR 73
212400 -13 1222  F5BOY YL3ARH KO26
212445  +2 1222  TN8GD F5BOY JN35 (x6)

20m

UTC    dB Audio  Message
152415 -10 1272  TJ1GD/P F5BOY JN35 (x13)
170645 -24 1549  <...> F5BOY JN35
170915 -24 1548  VU2ATN F5BOY JN35

10m

UTC    dB Audio  Message
150415 -19 2067  SN0WWA F5BOY JN35 (x2)
160330 -13 1313  F5BOY II7WWA RR73
160800 -22 1469  II9WWA F5BOY JN35

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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