WK3A — 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: United States Most frequent locator attributed to this token: FM19

Receiver-side FT8 activity involving WK3A, decoded by SO8OO in southeastern Poland. 31 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-07-26 and 2026-09-19.

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 31 FT8 messages attributed to WK3A as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (65%), followed by 40 m (35%). Most decodes (100%) fell within the six-hour window 23:00-05:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

31
Messages attributed
5
UTC dates decoded
11
Active 15-min windows
-13 dB
Estimated median S/N

Bands

40m · 11 20m · 20
First attributed message: 2026-07-26
Last attributed message: 2026-09-19 23:40 UTC

Observed FT8 message patterns

Attributed sample
31 messages
Active dates
5 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-24 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 5.

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 WK3A in decoded directed-looking exchanges:

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 WK3A

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
FM19 · 12 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,310 km (approx.)
Last such locator decoded
2026-09-19 23:34 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 UTCBandWK3A S/NCounterpartCounterpart S/NMsgsCapture
09-19 23:38 40m -7 / -11 PD0LBY -12 / - 4 ✓ Closing observed
09-19 23:37 40m - / - F5PBG -8 / - 2 Partial capture
09-19 23:37 40m - / - RA3ZH +2 / - 4 Partial capture
09-19 23:36 40m -12 / -1 F5NBU -4 / -8 5 ✓ Full exchange observed
09-19 23:34 40m -12 / -20 EX7CQ -10 / -24 5 ✓ Full exchange observed
09-18 22:29 40m - / - IW9FRA -15 / - 2 Partial capture
09-16 03:38 40m -14 / - W6B - / -17 3 ✓ Closing fragment
09-14 07:45 40m - / -13 G0IUS -8 / - 2 Partial capture
08-27 14:18 20m - / - DS3EXT -17 / - 3 Partial capture
08-22 23:46 20m -9 / - IS0KNG - / - 3 Partial capture
08-22 23:45 20m - / - SP6AXW -12 / - 2 Partial capture
08-22 23:43 20m -8 / -8 9K2MP -3 / -9 6 ✓ Full exchange observed
08-01 04:47 20m - / - OD5KU +6 / - 2 Partial capture
08-01 04:38 20m -20 / - LX1TI - / -6 2 Partial capture
08-01 04:36 20m -19 / - AH6HY - / -13 2 ✓ Closing fragment
08-01 04:23 20m - / -9 R2ST -10 / - 3 Partial capture
08-01 04:20 20m - / -8 RK6AAC -3 / - 3 ✓ Closing fragment
08-01 04:19 20m - / - V31DL -8 / - 2 ✓ Closing fragment
08-01 04:07 20m -24 / +4 SP8AJK -14 / -2 3 ✓ Full exchange observed
08-01 04:03 20m - / - SP8AJK -12 / - 3 Partial capture
08-01 04:03 20m - / - V31DL -7 / - 4 Partial capture
08-01 04:01 20m - / +5 RK4FF -8 / - 3 ✓ Closing fragment
08-01 03:59 20m -21 / - LY1CX - / -16 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
233645 -12 1768  F5NBU WK3A RR73
233700 -11  402  WK3A RA3ZH KO81
233700  -9 1818  WK3A F5PBG IN78
233700  -4 1768  WK3A F5NBU 73
233730  +7  402  WK3A RA3ZH KO81
233730  -7 1818  WK3A F5PBG IN78
233745 -13 1768  UW8SM WK3A RR73
233800  +6  402  WK3A RA3ZH KO81
233800 -11 1534  WK3A PD0LBY JO22
233830  +8  268  WK3A RA3ZH KO81
233830 -16 1534  WK3A PD0LBY R-11
233845  -7 1767  PD0LBY WK3A RR73
233900 -10 1534  WK3A PD0LBY 73
233930  -9  455  WK3A SV8TCP KM27
234045  -7 1768  DL1SRS WK3A -14
20m 
UTC    dB Audio  Message
231415  -9 1078  9K2MP WK3A FM19 (x2)
234400  -3 1079  WK3A 9K2MP -08
234415 -11 1170  9K2MP WK3A R-09
234430  -1 1080  WK3A 9K2MP RR73
234445  -6 1170  9K2MP WK3A 73
234500  -4 1080  WK3A 9K2MP 73
234530 -10 2215  WK3A SP6AXW JO80 (x2)
234600  -9 1170  IS0KNG WK3A FM19 (x3)
141800 -22 1402  WK3A DS3EXT PM36 (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.

CW

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

Explore CW reception at SO8OO

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