BI4IWL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: China Most frequent locator attributed to this token: OM86

Receiver-side FT8 activity involving BI4IWL, decoded by SO8OO in southeastern Poland. 1,529 FT8 messages attributed to this token as transmitter, on 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-26.

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 1,529 FT8 messages attributed to BI4IWL as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (67%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -3 dB.

Overview

1,529

Messages attributed

UTC dates decoded

129

Active 15-min windows

-3 dB

Estimated median S/N

Bands

20m · 1,529

First attributed message: 2026-06-06
Last attributed message: 2026-08-26 12:23 UTC

Observed FT8 message patterns

Attributed sample: 1,529 messages
Active dates: 13 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -12 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 43, moderate (-15 to -9 dB) 364, strong (≥ -8 dB) 1,122.

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 BI4IWL in decoded directed-looking exchanges:

RV6AVU · European Russia ×3 LY7M · Lithuania ×2 R7ZY · European Russia ×2 IU7SEL · Italy ×2 YO8RAW · Romania ×2 YU4OCC · Serbia ×2 EC3A · Spain RA3OR · European Russia UA3SNB · European Russia EB5BSI · Spain TJ1GD/P · Cameroon OK1FAN · Czech Republic

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 BI4IWL

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: OM86 · 1,116 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,328 km (approx.)
Last such locator decoded: 2026-08-26 12:23 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	BI4IWL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-08 16:24	40m	- / -13	YT3BL	+7 / -	5	✓ Closing fragment
09-08 16:21	40m	- / -11	YO8RAW	+11 / -	2	✓ Closing fragment
09-08 16:08	40m	- / -12	YO8RAW	+17 / -	2	✓ Closing fragment
09-08 16:03	40m	- / -	R9CB	-16 / -	2	✓ Closing fragment
09-08 15:52	40m	- / -15	RA3BL	+2 / -	4	✓ Closing fragment
08-28 21:14	80m	- / -16	ON4IQ	+20 / -	3	✓ Closing fragment
08-28 21:11	80m	- / -23	SP2HNF	+16 / -	5	✓ Closing fragment
08-28 21:06	80m	- / -	ON4IQ	+20 / -	2	Partial capture
08-28 21:06	80m	- / -	SP2HNF	+17 / -	3	Partial capture
08-28 17:02	40m	- / -8	UY7AM	+1 / -	3	✓ Closing fragment
08-28 16:38	40m	- / -20	UB4FGK	-7 / -	2	✓ Closing fragment
08-28 16:02	40m	- / -	UA4FOZ	-20 / -	2	Partial capture
08-28 15:48	40m	- / -10	EU6UE	-6 / -	2	✓ Closing fragment
08-28 15:37	40m	- / -14	4X1SK	-13 / -	3	✓ Closing fragment
08-28 15:35	40m	- / -	UA4FOZ	-21 / -	4	Partial capture
08-28 15:35	40m	- / -	EW8KO	-4 / -	3	Partial capture
08-28 15:19	40m	- / -18	RK6DD	0 / -	2	✓ Closing fragment
08-28 14:52	40m	- / -13	R2AVW	-4 / -	2	✓ Closing fragment
08-28 14:26	40m	- / -11	RA3OR	-11 / -	4	✓ Closing fragment
08-28 14:20	40m	- / -	R6ZCQ	-14 / -	2	Partial capture
08-28 09:15	10m	- / -17	IK2GAU	+3 / -	4	✓ Closing fragment
08-28 08:56	10m	- / -	IZ4CCL	-12 / -	2	Partial capture
08-28 07:52	10m	- / -16	DK6QO	-5 / -	3	✓ Closing fragment
08-28 07:42	10m	- / -	DL4DTL	-5 / -	2	Partial capture
08-27 19:52	80m	- / -	IW0BYL	+16 / -	5	Partial capture
08-27 19:06	80m	- / -3	4X1UF	-4 / -	5	✓ Closing fragment
08-26 17:56	40m	- / -18	RT7B	-3 / -	2	✓ Closing fragment
08-24 14:34	20m	- / -	DF7BN	+7 / -	3	Partial capture
08-24 14:29	20m	- / -19	PD2WL	-3 / -	8	Partial capture
08-23 23:23	20m	-10 / +7	BG8NQ	-16 / -	3	✓ Closing observed
08-23 22:56	20m	- / -	IW5ALZ	0 / -	2	Partial capture
08-23 22:37	20m	-2 / -	<...>	- / -	2	Partial capture
08-23 22:29	20m	-6 / -	PT7PT	- / -17	2	✓ Closing fragment
08-23 22:27	20m	+4 / +1	OD5ZZ	-8 / -7	3	✓ Full exchange observed
08-23 22:16	20m	- / -22	G8GDS	-10 / -	2	Partial capture
08-23 22:12	20m	- / -25	G8GDS	-4 / -	2	Partial capture
08-23 22:08	20m	+2 / -	YU4OCC	- / -18	4	✓ Closing fragment
08-23 22:05	20m	+3 / -	7Z1BQ	- / -	3	Partial capture
08-23 22:02	20m	+1 / -9	I6GFX	+2 / -11	5	✓ Full exchange observed
08-23 21:56	20m	-6 / -13	IW5ALZ	-10 / -15	5	✓ Full exchange observed
08-23 21:52	20m	-5 / -	7Z1BQ	- / -	3	Partial capture
08-23 21:49	20m	-5 / -	<...>	- / -	2	Partial capture
08-23 21:39	20m	-6 / -	R7ZY	-15 / -8	3	✓ Closing observed
08-23 21:33	20m	+1 / -	7Z1BQ	- / -	3	Partial capture
08-23 21:26	20m	0 / -	EA6TU	- / -16	2	✓ Closing fragment
08-23 21:25	20m	+4 / -	EA3DQ	- / -11	2	✓ Closing fragment
08-23 21:23	20m	+1 / -	<...>	- / -	3	Partial capture
08-23 21:22	20m	- / -17	G8GDS	-10 / -	4	Partial capture
08-23 21:19	20m	0 / -	<...>	- / -	3	Partial capture
08-23 21:14	20m	0 / -	SB5YPK	- / -21	6	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
155400  +2  237  BI4IWL RA3BL -15 (x2)
160045 -12  676  BI4IWL R9CB RR73 (x3)
160830 +17 2781  BI4IWL YO8RAW -12 (x4)
162445  +2 2686  BI4IWL YT3BL JN95 (x5)
162945  -7  563  BI4IWL RV9FF -10

80m

UTC    dB Audio  Message
202330 +17  944  BI4IWL IW0BYL JN61
172215  -9 1398  BI4IWL UA1OMS RR73
210615 +17 2617  BI4IWL SP2HNF JO94
210645 +19 2092  BI4IWL ON4IQ JO20
210645 +16 2617  BI4IWL SP2HNF JO94
210715 +21 2092  BI4IWL ON4IQ JO20
210715 +18 2617  BI4IWL SP2HNF JO94 (x6)
211415 +22 2092  BI4IWL ON4IQ JO20 (x3)

10m

UTC    dB Audio  Message
074245  -4 2789  BI4IWL DL4DTL JN49 (x2)
074445 -19 1591  BI4IWL DL8FBD JO40
075245  -6 1333  BI4IWL DK6QO JO42 (x3)
075545 -15  988  BI4IWL SV2BWY KN10
084915 -13 2500  BI4IWL IK2NHH JN45
085645 -12 2289  BI4IWL IZ4CCL JN54 (x3)
091545  +0 2177  BI4IWL IK2GAU JN45 (x4)

20m

UTC    dB Audio  Message
141330 -18 2761  5H6PJ BI4IWL 73
142330 -16 2658  VU2FR BI4IWL RR73
142915  +7 2437  BI4IWL PD2WL -19 (x8)
143415  +5 2735  BI4IWL DF7BN JO43 (x3)
122045 -12 2856  CQ BI4IWL OM86                        a1 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee