F4BYA — 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: JN19

Receiver-side FT8 activity involving F4BYA, decoded by SO8OO in southeastern Poland. 53,889 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 94 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-20.

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 53,889 FT8 messages attributed to F4BYA as the transmitting token by decoded message structure across 94 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 20 m (25%) and 80 m (5%). The busiest six-hour window was 19:00-01:00 UTC, containing 41% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (96%); the estimated median was +2.9 dB.

Overview

53,889

Messages attributed

UTC dates decoded

3,222

Active 15-min windows

+2.9 dB

Estimated median S/N

Bands

160m · 1 80m · 2,701 60m · 254 40m · 37,492 20m · 13,441

First attributed message: 2026-06-06
Last attributed message: 2026-10-20 05:55 UTC

Observed FT8 message patterns

Attributed sample: 53,889 messages
Active dates: 94 UTC dates
Estimated median S/N: +2.9 dB
Estimated 10th-90th percentile: -6 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 229, moderate (-15 to -9 dB) 2,034, strong (≥ -8 dB) 51,626.

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 F4BYA in decoded directed-looking exchanges:

DL6MRM · Fed. Rep. of Germany ×3 UT2PC · Ukraine ×3 E75C · Bosnia-Herzegovina ×3 CT2IGO · Portugal ×2 DK5EI · Fed. Rep. of Germany ×2 DL0DM · Fed. Rep. of Germany ×2 EA4IVO · Spain ×2 EA5DKP · Spain ×2 EA5JLN · Spain ×2 HB9TWU · Switzerland ×2 II7MGBT · Italy ×2 IZ3ZOF · Italy ×2

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 F4BYA

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: JN19 · 50,703 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,348 km (approx.)
Last such locator decoded: 2026-10-20 05:55 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	F4BYA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-20 05:55	40m	+10 / -	EA3IVB	- / -	2	Partial capture
10-20 05:46	40m	+1 / -	WB2MLY	- / -	7	Partial capture
10-20 05:44	40m	0 / -	RK6HWP	- / -	3	Partial capture
10-20 05:40	40m	+4 / -	DF7QR	- / -	7	Partial capture
10-20 05:38	40m	+3 / -	RK6HWP	- / -	4	Partial capture
10-20 05:36	40m	+5 / -	UB6LUR	- / -10	3	✓ Closing fragment
10-20 05:34	40m	+6 / -	KR4IXT	- / -	4	Partial capture
10-20 05:30	40m	+4 / -	SV1OML	- / -	7	Partial capture
10-20 05:28	40m	+12 / -	VE2XID	- / -	4	Partial capture
10-20 05:26	40m	+5 / -	EA7NK	- / -	3	Partial capture
10-20 05:22	40m	+7 / -	EA7NK	- / -	3	Partial capture
10-20 05:20	40m	+13 / -	EA3IOE	- / -	4	Partial capture
10-20 05:18	40m	+4 / -	EA7NK	- / -	3	Partial capture
10-20 05:14	40m	+9 / -	RA1NBG	- / -	8	Partial capture
10-20 05:09	40m	+6 / -	RA1NBG	- / -	4	Partial capture
10-20 05:07	40m	+5 / -	VO1YE	- / -	4	Partial capture
10-20 05:05	40m	+3 / -	RA9XAF	- / -	4	Partial capture
10-20 04:54	40m	+6 / -	N9AGC	- / -	20	Partial capture
10-20 04:52	40m	+5 / -	SV8EUB	- / -13	3	✓ Closing fragment
10-20 04:48	40m	+5 / -	AC2FA	- / -20	4	Partial capture
10-20 04:46	40m	+10 / -	IW3AGO	- / -	4	Partial capture
10-20 04:42	40m	+7 / -	EA7NK	- / -	8	Partial capture
10-20 04:40	40m	+6 / -	N7CAR	- / -16	3	✓ Closing fragment
10-20 04:38	40m	+8 / -	EA7NK	- / -	4	Partial capture
10-20 04:36	40m	+5 / -	G6HUI	- / -	4	Partial capture
10-20 04:34	40m	+12 / -	N6RNN	- / -	4	Partial capture
10-20 04:32	40m	+10 / -	EA7NK	- / -	4	Partial capture
10-20 04:30	40m	+16 / -	N7CAR	- / -	2	Partial capture
10-20 04:28	40m	+8 / -	HF50HSP	- / -	4	Partial capture
10-20 04:25	40m	+1 / -	ON3ANY	- / -	4	Partial capture
10-20 04:23	40m	+4 / -	WZ4K	- / -	4	Partial capture
10-20 04:21	40m	+4 / -	YO2UKG	- / 0	4	✓ Closing fragment
10-20 04:19	40m	+7 / -	RK9DO	- / -	4	Partial capture
10-20 04:17	40m	+8 / -	RN3YN	- / -	4	Partial capture
10-20 04:15	40m	+11 / -	W7G	- / -	4	Partial capture
10-20 04:13	40m	+10 / -	ON3ANY	- / -	4	Partial capture
10-20 04:11	40m	+10 / -	F4GAJ	- / -	4	Partial capture
10-20 04:09	40m	+10 / -	WZ4K	- / -	4	Partial capture
10-20 04:07	40m	+5 / -	N1AHO	- / -	4	Partial capture
10-20 04:01	40m	+4 / -	RN3YN	- / -	11	Partial capture
10-20 03:55	40m	+5 / -	WZ4K	- / -	12	Partial capture
10-20 03:53	40m	+11 / -	N4TUR	- / -	3	Partial capture
10-20 03:51	40m	+6 / -	KD3BLX	- / -	4	Partial capture
10-20 03:49	40m	+2 / -	LA5WJA	- / -	4	Partial capture
10-20 03:45	40m	+8 / -	KD3BLX	- / -	8	Partial capture
10-20 03:43	40m	+10 / -	7Z1FF	- / -	4	Partial capture
10-20 03:39	40m	+10 / -	RN3YN	- / -	8	Partial capture
10-20 03:35	40m	+10 / -	WD8LQB	- / -	8	Partial capture
10-20 03:33	40m	+8 / -	ON3ANY	- / -	4	Partial capture
10-20 03:31	40m	+3 / -	WD8LQB	- / -	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
054245  +6 2982  DF7QR F4BYA JN19 (x3)
054445  +1 2982  RK6HWP F4BYA JN19 (x3)
054615  -1 2982  WB2MLY F4BYA JN19 (x7)
055515  +8 2982  EA3IVB F4BYA JN19 (x2)

80m

UTC    dB Audio  Message
213600  +7 2849  DG3YEV F4BYA R-04
213615  +1 1820  F4BYA DG3YEV RR73
213630  -1 2850  DG3YEV F4BYA 73
213700  +8 2849  TF1A F4BYA JN19 (x2)
213900  +3 2850  UN8DSW F4BYA JN19 (x2)
214030  -6 2850  TF1A F4BYA JN19 (x3)
214230  +6 2850  F4GHN F4BYA JN19 (x3)
214530 -11 2059  F4BYA MM9JMF -03 (x2)

60m

UTC    dB Audio  Message
185915  +6 2781  DL1JEL F4BYA JN19 (x2)
190045  +6 2781  HB9EOT F4BYA JN19
190100 -14 1754  F4BYA HB9EOT +13
190115  +2 2781  HB9EOT F4BYA R+01
190130 -13 1754  F4BYA HB9EOT RR73
190145  -1 2781  HB9EOT F4BYA 73
190215  +2 2781  IK2DUW F4BYA JN19 (x8)

160m

UTC    dB Audio  Message
201345 -13 1176  F4BYA SP2GJI -01 (x2)
221030 -17 2844  CT2GQA F4BYA JN19

20m

UTC    dB Audio  Message
201445  -5 2412  IZ0DHC F4BYA R-12 (x3)
201715  -6 2412  M0GQC F4BYA JN19
202045 -17 2413  SQ9BSA F4BYA JN19
203015 -16 2413  M0GQC F4BYA JN19
203115 -16 2413  G4PTP F4BYA JN19
203130  -7 2752  F4BYA G4PTP -09
203145 -15 2413  G4PTP F4BYA JN19
203200  -8 2752  F4BYA G4PTP -09
203215 -17 2413  G4PTP F4BYA JN19
203230  -7 2752  F4BYA G4PTP -09
203245 -16 2413  G4PTP F4BYA JN19
203315 -18 2413  JA1LZB F4BYA JN19 (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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