F4JLM — 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: JN14

Receiver-side FT8 activity involving F4JLM, decoded by SO8OO in southeastern Poland. 145 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-26.

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 145 FT8 messages attributed to F4JLM as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 20 m (34%) and 80 m (8%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -5 dB.

Overview

145

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 11 40m · 85 20m · 49

First attributed message: 2026-06-11
Last attributed message: 2026-10-26 10:58 UTC

Observed FT8 message patterns

Attributed sample: 145 messages
Active dates: 14 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -22 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 39, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 88.

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 F4JLM in decoded directed-looking exchanges:

DL8YBL · Fed. Rep. of Germany ×2 HK3AB · Colombia KJ1R · United States VK2BC · Australia VK3HA · Australia VK5AIB · Australia WA4FU · United States DA1ST · Fed. Rep. of Germany DH2NJS · Fed. Rep. of Germany DL2AKT · Fed. Rep. of Germany DL3ND · Fed. Rep. of Germany DL4NWM · Fed. Rep. of Germany

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 F4JLM

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: JN14 · 68 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,537 km (approx.)
Last such locator decoded: 2026-10-26 09:54 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	F4JLM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-26 10:57	40m	-24 / -	LB1NI	-24 / -1	3	✓ Closing observed
10-26 10:51	40m	- / -6	PD5BUS	-23 / -	3	✓ Closing fragment
10-26 10:46	40m	- / -2	DA1ST	-15 / -	3	✓ Closing fragment
10-26 09:44	40m	-22 / 0	OE8PIT	+5 / 0	9	✓ Full exchange observed
10-26 09:33	40m	-22 / -10	DL2AKT	-19 / -	5	✓ Closing observed
10-26 09:28	40m	-22 / -	DL8YBL	- / -	3	✓ Closing fragment
10-26 09:26	40m	-22 / -	OS4K	- / +3	2	✓ Closing fragment
10-26 09:24	40m	-24 / -3	OK1DBE	-4 / 0	6	✓ Full exchange observed
10-26 09:24	40m	- / -	S51PV	-15 / -	3	Partial capture
10-26 09:23	40m	-21 / -	IQ4JO	-18 / +1	2	Partial capture
10-25 12:05	40m	- / -	SP1ZMO	-22 / -	2	Partial capture
10-25 10:12	40m	- / -11	DH2NJS	-14 / -	6	✓ Closing fragment
09-08 08:10	40m	-10 / -	HI3RRR	- / -	2	Partial capture
09-08 08:08	40m	-14 / -	OA4ENG	- / -	2	Partial capture
08-31 19:49	80m	-9 / -	V51WH	- / -	2	Partial capture
08-31 19:44	80m	-24 / -7	IV3JTG	+2 / -7	13	✓ Full exchange observed
08-31 19:42	80m	-20 / -3	DH5YBE	-1 / -9	3	✓ Full exchange observed
08-31 19:37	80m	+1 / -	V51WH	- / -	4	Partial capture
08-30 20:16	20m	-10 / -	KJ1R	- / -18	5	✓ Closing fragment
08-30 20:12	20m	-6 / -12	WA4FU	-16 / +9	6	✓ Full exchange observed
08-30 07:32	20m	-4 / -	VK1KAZ	- / -	2	Partial capture
08-30 07:31	20m	-4 / -	VK2BC	- / -9	2	✓ Closing fragment
08-30 07:29	20m	0 / -	VK5AIB	- / -13	2	✓ Closing fragment
08-30 07:25	20m	- / -13	RN6MA	-4 / -	4	Partial capture
08-30 07:21	20m	- / -	TA2EE	-3 / -	6	Partial capture
08-27 20:41	40m	+2 / -	TA3NK	-5 / -12	3	Partial capture
08-27 20:41	40m	+7 / -16	UA9CR	-6 / -8	5	✓ Full exchange observed
08-27 20:40	40m	+4 / +10	DL4NWM	+1 / -2	5	✓ Full exchange observed
08-27 20:38	40m	+3 / -	IZ8PPI	- / -13	2	✓ Closing fragment
08-27 20:37	40m	+4 / -	JA0RUG	-6 / -10	4	✓ Closing observed
08-27 20:36	40m	+2 / -	DL6RS	+2 / -3	4	✓ Full exchange observed
08-27 20:34	40m	+2 / -5	JA5MHD	-4 / -3	4	✓ Full exchange observed
08-27 20:31	40m	+6 / -9	F1PBZ	0 / -2	3	✓ Full exchange observed
08-27 20:31	40m	+4 / +5	F1TXI	-2 / +5	9	✓ Full exchange observed
08-27 20:30	40m	+6 / -1	OH1LA	-8 / -7	5	✓ Full exchange observed
08-27 20:21	40m	- / -	JA6VQA	-12 / -	4	Partial capture
08-27 20:15	40m	- / -	DL1EDR	+4 / -	3	Partial capture
08-26 10:09	20m	+6 / -	RI1FJL	- / 0	3	Partial capture
08-17 16:51	20m	+8 / -	7X2KF	- / -	2	Partial capture
08-15 12:26	20m	- / -	PD3LKN	-7 / -	6	Partial capture
08-07 22:28	20m	- / -	DL1UDO	-17 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
095130 -16  951  PE2K F4JLM RR73
095200 -22 1398  PD4RJ F4JLM -04
095430 -20 1398  CQ F4JLM JN14
095645 -13 2666  F4JLM OZ3AAF 73
104645  -6  578  F4JLM DF5DY JO41
104645 -17 1398  F4JLM DA1ST JO41 (x3)
105045  -7  713  F4JLM DL3ND 73
105115 -23 1696  F4JLM PD5BUS JO22 (x3)
105745 -24 1457  F4JLM LB1NI JO49
105800 -24 1456  LB1NI F4JLM -01
105845 -23 1457  F4JLM LB1NI 73

80m

UTC    dB Audio  Message
194500  +7  997  F4JLM IV3JTG JN65
194515 -16  997  SV9MBH F4JLM -15
194645 -24  997  IV3JTG F4JLM -07
194700  +4  997  F4JLM IV3JTG R-07 (x5)
194915 -12  997  V51WH F4JLM JN14
194930  -1  997  F4JLM IV3JTG R-07
194945  -6  997  V51WH F4JLM JN14
195000  +2  997  F4JLM IV3JTG R-07 (x4)

20m

UTC    dB Audio  Message
201245  -3 2183  WA4FU F4JLM JN14
201300 -18 1145  F4JLM WA4FU -12
201315  -6 1749  CQ F4JLM JN14                         a1
201330 -15 1145  F4JLM WA4FU -12
201345  -6 1749  WA4FU F4JLM R+09 (x2)
201430 -16 1144  F4JLM WA4FU RR73
201515  -9 1837  CQ F4JLM JN14 (x2)
201600 -12 2638  F4JLM BG7BVP OL68
201615  -9 1838  KJ1R F4JLM -18 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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