ON5LW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO21

Receiver-side FT8 activity involving ON5LW, decoded by SO8OO in southeastern Poland. 934 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-09-17.

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 934 FT8 messages attributed to ON5LW as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (43%), followed by 60 m (34%) and 20 m (15%). Most decodes (78%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

934

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

80m · 82 60m · 318 40m · 398 20m · 136

First attributed message: 2026-06-15
Last attributed message: 2026-09-17 05:29 UTC

Observed FT8 message patterns

Attributed sample: 934 messages
Active dates: 12 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -15 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 75, moderate (-15 to -9 dB) 310, strong (≥ -8 dB) 549.

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 ON5LW in decoded directed-looking exchanges:

IQ4JO · Italy ×2 JA1SKG · Japan ×2 RN6MA · European Russia ×2 EC5M · Spain ×2 5Z4VJ · Kenya A92AE · Bahrain BA3QIQ · China BA7IWL · China BG7BVI · China BG7KEO · China BG8NQ · China E70SZ · Bosnia-Herzegovina

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 ON5LW

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: JO21 · 570 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-09-17 05:29 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	ON5LW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 05:28	40m	+6 / -	N0IDX	- / -18	2	✓ Closing fragment
09-17 05:22	40m	+8 / -	W5JK	- / -22	2	✓ Closing fragment
09-17 05:20	40m	+8 / -	VE6CQ	- / -25	2	✓ Closing fragment
09-17 05:14	40m	+6 / -	EA7LQU	- / -9	2	✓ Closing fragment
09-17 05:09	40m	-1 / -	W7XE	- / -20	3	✓ Closing fragment
09-17 05:06	40m	+12 / -	PY3EK	- / -25	4	✓ Closing fragment
09-17 05:04	40m	+10 / -15	PD1AC	-12 / -21	5	✓ Full exchange observed
09-17 05:03	40m	+6 / -	W6K	- / -23	2	✓ Closing fragment
09-17 04:59	40m	+6 / -	9H4JX	- / +3	5	Partial capture
09-17 04:53	40m	+16 / -	WB0WQS	- / -25	2	✓ Closing fragment
09-17 04:49	40m	+12 / -	SP6VXO	- / -14	5	Partial capture
09-17 04:46	40m	+14 / -	WD4IXD	- / -15	4	✓ Closing fragment
09-17 04:43	40m	+6 / -10	ON1DGN	-18 / -25	3	✓ Full exchange observed
09-17 04:43	40m	- / -	PD0RCQ	-14 / -	2	Partial capture
09-17 04:41	40m	+9 / -	IW0FGX	- / -	2	✓ Closing fragment
09-17 04:40	40m	+8 / -	RA1NBG	- / -22	2	✓ Closing fragment
09-17 04:38	40m	+5 / -	K3FH	- / -25	3	✓ Closing fragment
09-17 04:36	40m	+8 / -	RU3DBT	- / -17	2	✓ Closing fragment
09-17 04:33	40m	-3 / -	KE0RVP	- / -25	2	✓ Closing fragment
09-17 03:43	40m	- / -16	RW9AD	-19 / -	2	Partial capture
09-17 03:13	40m	- / +1	RN6HK	-3 / -	3	✓ Closing fragment
09-17 02:06	40m	-16 / -	KA3KQO	- / -20	3	✓ Closing fragment
09-17 01:59	40m	-18 / -	8R1TM	- / -	3	✓ Closing fragment
09-17 01:54	40m	-14 / -	II6IALU	- / -17	10	Partial capture
09-17 01:46	40m	-5 / -	CE7GFN	- / -	5	Partial capture
09-17 01:44	40m	-8 / -2	RC9WC	-22 / -14	4	✓ Full exchange observed
09-17 01:43	40m	-2 / -	WD4SRC	- / -18	2	✓ Closing fragment
09-17 01:41	40m	-6 / -	CE7GFN	- / -	4	Partial capture
08-24 21:03	40m	+8 / -	TN8GD	- / -17	10	✓ Closing fragment
08-24 21:00	40m	+7 / -	DG7ABL	- / -10	2	✓ Closing fragment
08-24 20:59	40m	+8 / -	IU6TPD	- / -9	2	✓ Closing fragment
08-24 20:56	40m	+10 / -	G7RCQ	- / -7	2	✓ Closing fragment
08-24 20:54	40m	+12 / +8	DK5DW	+3 / -6	5	✓ Full exchange observed
08-24 20:52	40m	+6 / -	JA4JKO	- / -17	2	✓ Closing fragment
08-24 20:49	40m	+3 / -	GW3TYI	-15 / -3	5	✓ Closing observed
08-24 20:48	40m	+9 / -	2E0MRK	- / -10	2	✓ Closing fragment
08-24 20:45	40m	+11 / -	DS2MGT	- / -15	3	✓ Closing fragment
08-24 20:43	40m	+8 / -	DS4CSD	- / -14	3	✓ Closing fragment
08-24 20:41	40m	+9 / +3	R2HB	-8 / -9	6	✓ Full exchange observed
08-24 20:40	40m	+8 / +7	DL1EDR	-1 / 0	8	✓ Full exchange observed
08-24 20:39	40m	+10 / -	JH4HMG	- / -11	2	✓ Closing fragment
08-24 20:36	40m	+10 / +7	EA5HM	-12 / -4	3	✓ Full exchange observed
08-24 20:35	40m	+10 / -	GJ0KYZ	-5 / -4	4	✓ Full exchange observed
08-24 20:33	40m	+12 / +5	DL9KM	-4 / -9	5	✓ Full exchange observed
08-24 20:33	40m	+10 / +2	F1IQH	-9 / -4	6	✓ Full exchange observed
08-24 20:33	40m	- / -	MM/DH0GBC	-10 / -	3	✓ Closing fragment
08-24 19:45	20m	-2 / -	WA2EIO	- / -19	2	✓ Closing fragment
08-24 19:42	20m	+2 / -	CT1END/P	- / -17	2	Partial capture
08-24 19:40	20m	- / -	G8IXM	-6 / -	3	Partial capture
08-24 19:21	20m	-1 / -	BA4OO	- / -16	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
052230  +7 1288  W5JK ON5LW -22 (x2)
052330  +9 1288  CQ DX ON5LW JO21 (x10)
052830  +5 1288  N0IDX ON5LW -18 (x2)
052930  +7 1288  CQ DX ON5LW JO21

20m

UTC    dB Audio  Message
193600  -4 1508  SP6ZLT ON5LW RR73
193730  +1 1508  IZ4EFV ON5LW -14
193830  +0 1508  JE1LFX ON5LW RR73
193900  -5 1509  CQ ON5LW JO21 (x2)
194015  -6  880  ON5LW G8IXM JO02 (x2)
194130  -3 1508  CQ ON5LW JO21
194145  -4  881  ON5LW G8IXM JO02
194200  -4 1508  CQ ON5LW JO21
194230  +2 1508  CT1END/P ON5LW -17 (x2)
194400  +1 1508  PY2PM ON5LW RR73
194500  -3 1508  WA2EIO ON5LW -19 (x2)

60m

UTC    dB Audio  Message
231200  -3 1264  CQ ON5LW JO21 (x4)
231615  -9 1493  ON5LW DL2YMG JO31
005900  -6 1264  ER3ZW ON5LW JO21 (x10)

80m

UTC    dB Audio  Message
044415 +19 2676  ON5LW OE3DXA -12
044415 -11 1193  ON5LW <...> -09
044445 +18 2676  ON5LW OE3DXA -12
044615 -12 2303  ON5LW F1PBZ +00 (x2)
022430 -18 1480  UT5ZC ON5LW JO21
022515 -13  965  ON5LW VP2MAA -17
022530  -9  966  VP2MAA ON5LW R-06
022715 -14  425  TJ1GD/P ON5LW JO21
023015 -15 1671  HI3T ON5LW JO21
023315 -10  425  TJ1GD/P ON5LW JO21 (x5)

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