K4BYN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM05

Receiver-side FT8 activity involving K4BYN, decoded by SO8OO in southeastern Poland. 30 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-08-27 and 2026-09-15.

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 30 FT8 messages attributed to K4BYN as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (93%), followed by 40 m (7%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (80%); the estimated median was -21 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-21 dB

Estimated median S/N

Bands

80m · 28 40m · 2

First attributed message: 2026-08-27
Last attributed message: 2026-09-15 23:44 UTC

Observed FT8 message patterns

Attributed sample: 30 messages
Active dates: 8 UTC dates
Estimated median S/N: -21 dB
Estimated 10th-90th percentile: -24 to -12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 0.

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 K4BYN in decoded directed-looking exchanges:

WA6YOU · United States DL1UDO · Fed. Rep. of Germany F4FPR · France IZ3ATV · Italy 7X5CY · Algeria 9A5E · Croatia CT3MD · Madeira Islands CT7AUT · Portugal EA1AIQ · Spain EA4HPY · Spain EA8AJ · Canary Islands G0ORC · England

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 K4BYN

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: FM05 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,754 km (approx.)
Last such locator decoded: 2026-09-14 23:21 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	K4BYN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 23:44	80m	-22 / -13	US2YW	+10 / -12	2	Partial capture
09-14 23:19	80m	-22 / -	J88IH	- / -11	4	Partial capture
09-13 23:30	80m	- / -7	EA4HPY	-6 / -	2	✓ Closing fragment
09-13 23:25	80m	-12 / -11	SP6JIU	+29 / -10	4	✓ Full exchange observed
09-13 22:46	80m	- / -13	EA8AJ	-12 / -	2	✓ Closing fragment
09-12 23:38	80m	- / -19	EA1AIQ	-12 / -	5	✓ Closing fragment
09-12 23:36	80m	-18 / -	7X5CY	-20 / -	3	✓ Closing observed
09-09 23:29	80m	- / -17	G0ORC	-7 / -	2	✓ Closing fragment
09-09 23:15	80m	- / -8	CT7AUT	-16 / -	3	✓ Closing fragment
09-08 23:54	80m	- / +5	PI4DX	-6 / -	2	✓ Closing fragment
09-08 23:52	80m	- / -	DL3MIB	+1 / -	6	Partial capture
09-08 23:45	80m	- / -22	SP100PKP	+5 / -	3	Partial capture
09-08 23:39	80m	-21 / -24	Z62NS	+16 / -12	5	✓ Full exchange observed
09-08 23:32	80m	-22 / -	Z62NS	- / -	2	Partial capture
09-07 00:02	80m	-13 / -	PR7AR	- / -17	5	Partial capture
09-06 23:57	80m	- / -	OK1SI	+10 / -	2	Partial capture
09-06 23:56	80m	-19 / -	GM7NJX/P	- / -13	2	Partial capture
09-06 23:38	80m	- / -	EA3LF	-12 / -	3	Partial capture
09-06 23:38	80m	- / -4	EI8GP	-13 / -	2	Partial capture
09-06 00:16	80m	-23 / -	VP8A	- / -	3	Partial capture
09-03 23:58	80m	- / -13	LA3BO	+6 / -	2	✓ Closing fragment
09-01 23:19	80m	- / -	SM3ULU	+3 / -	3	Partial capture
08-30 23:54	60m	- / -10	F4FPR	-11 / -	3	✓ Closing fragment
08-30 23:42	60m	- / -14	DL1UDO	-6 / -	2	✓ Closing fragment
08-30 23:33	60m	- / -16	IZ3ATV	-6 / -	3	✓ Closing fragment
08-29 23:59	80m	- / -	LZ2VQ	-2 / -	3	Partial capture
08-29 23:58	80m	- / -14	9A5E	+10 / -	5	✓ Closing fragment
08-29 23:57	80m	- / -12	LA2XPA	+2 / -	4	✓ Closing fragment
08-28 23:39	80m	- / -3	CT3MD	-14 / -	2	✓ Closing fragment
08-27 23:49	40m	- / -	WA6YOU	-14 / -	2	✓ Closing fragment
08-27 23:40	40m	-20 / -	TN8GD	- / -17	2	Partial capture
08-22 00:03	80m	- / -17	OH1MLZ	+8 / -	2	✓ Closing fragment
08-16 23:55	80m	- / -13	TF4M	-6 / -	5	✓ Closing fragment
08-16 00:15	80m	- / -	UT7UA	+13 / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
224615 -14 1291  K4BYN EA8AJ -13 (x2)
232530 +30 2850  K4BYN SP6JIU -11
232545 -13 2668  SP6JIU K4BYN R-10
232600 +28 2850  K4BYN SP6JIU RR73
232615 -12 2668  SP6JIU K4BYN 73
233030  -7 2091  K4BYN EA4HPY -07 (x2)
231945 -24 1188  J88IH K4BYN FM05 (x4)
232330  -7 1189  K4BYN SK0MT JO99
234415 +10  918  K4BYN US2YW -13
234430 -22 2140  US2YW K4BYN R-12

60m

UTC    dB Audio  Message
233300  -4 1981  K4BYN IZ3ATV JN55 (x3)
234215  -6 1528  K4BYN DL1UDO -14 (x2)
235415  -7 1354  K4BYN F4FPR IN88 (x3)

40m

UTC    dB Audio  Message
234045 -21 1137  TN8GD K4BYN FM05 (x2)
234930 -14  284  K4BYN WA6YOU +23 (x2)
000130 -24 1741  K4BYN EI9KF -06

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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