KW4BY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL97

Receiver-side FT8 activity involving KW4BY, decoded by SO8OO in southeastern Poland. 58 FT8 messages attributed to this token as transmitter, on 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-30 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 58 FT8 messages attributed to KW4BY as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). 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 moderate S/N range (66%); the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 58

First attributed message: 2026-08-30
Last attributed message: 2026-09-17 00:41 UTC

Observed FT8 message patterns

Attributed sample: 58 messages
Active dates: 3 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -17 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 38, strong (≥ -8 dB) 2.

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 KW4BY in decoded directed-looking exchanges:

LZ6C · Bulgaria ×2 DL3OCF · Fed. Rep. of Germany EI2IXB · Ireland ER3ZW · Moldova F4DIA · France MI7XHT · Northern Ireland SV7BAY · Greece TN8GD · Republic of the Congo ZS5DCF · South Africa

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 KW4BY

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: EL97 · 37 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,549 km (approx.)
Last such locator decoded: 2026-09-17 00:41 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	KW4BY S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 00:39	40m	-16 / -17	SV9QWC	-14 / -	9	Partial capture
09-17 00:37	40m	-16 / -10	MI7XHT	0 / -	3	✓ Closing observed
09-17 00:36	40m	-17 / -	ER3ZW	- / -6	2	✓ Closing fragment
08-31 03:54	40m	-8 / -	TT1GD	- / -	2	Partial capture
08-30 04:23	40m	- / -	F4DVG	-7 / -	5	Partial capture
08-30 04:11	40m	-12 / -	ZS5DCF	- / -25	6	✓ Closing fragment
08-30 04:10	40m	-13 / -	F4DIA	- / -	2	✓ Closing fragment
08-30 04:07	40m	-12 / -	KW8CW	- / -13	2	Partial capture
08-30 04:05	40m	-14 / -	UY0HY	- / -19	2	Partial capture
08-30 03:58	40m	-13 / -10	SV7BAY	+1 / -	4	✓ Closing observed
08-30 03:17	40m	-12 / -	W3GO	- / 0	2	Partial capture
08-30 03:15	40m	- / -	RA5BQ	-4 / -	11	Partial capture
08-30 03:11	40m	-16 / -16	LZ6C	-4 / -12	8	✓ Full exchange observed
08-30 03:05	40m	-18 / -15	LZ6C	-2 / -7	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
035445  -8  340  TT1GD KW4BY EL97
003615 -17 1417  ER3ZW KW4BY R-06 (x2)
003700  +1 2722  KW4BY MI7XHT IO64 (x2)
003745 -16 1417  MI7XHT KW4BY RR73
003945 -15 1417  SV9QWC KW4BY EL97
004000 -17 1959  KW4BY SV9QWC -17
004015 -16 1418  SV9QWC KW4BY EL97
004030 -16 1959  KW4BY SV9QWC -17
004045 -14 1417  SV9QWC KW4BY EL97 (x2)
004130 -11 1959  KW4BY SV9QWC -18 (x3)

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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