K8IS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM99

Receiver-side FT8 activity involving K8IS, decoded by SO8OO in southeastern Poland. 57 FT8 messages attributed to this token as transmitter, on 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-19 and 2026-08-23.

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 57 FT8 messages attributed to K8IS as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 20 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 (98%); the estimated median was -12 dB.

Overview

57
Messages attributed
4
UTC dates decoded
11
Active 15-min windows
-12 dB
Estimated median S/N

Bands

20m · 57
First attributed message: 2026-07-19
Last attributed message: 2026-08-23 03:58 UTC

Observed FT8 message patterns

Attributed sample
57 messages
Active dates
4 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-15 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 56, 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 K8IS 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 K8IS

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
EM99 · 14 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,546 km (approx.)
Last such locator decoded
2026-08-02 00:46 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 UTCBandK8IS S/NCounterpartCounterpart S/NMsgsCapture
08-23 03:56 20m - / - RK6AAC -7 / - 6 Partial capture
08-23 03:56 20m -17 / -2 UR5FS +4 / - 6 ✓ Closing observed
08-23 03:52 20m - / -10 RY3F -13 / - 3 Partial capture
08-21 12:23 20m - / -12 UN7PNF -16 / - 3 Partial capture
08-21 12:22 20m - / - M0CSD -18 / - 2 Partial capture
08-21 12:06 20m - / -12 UN7PNF -13 / - 3 Partial capture
08-02 00:47 20m -14 / - W5TSU - / -6 2 Partial capture
08-02 00:44 20m - / -16 EA5W -10 / - 2 Partial capture
08-02 00:42 20m -12 / -8 UA9CMR -18 / -11 4 ✓ Closing observed
08-02 00:30 20m -10 / - TN8GD - / -13 2 Partial capture
08-02 00:28 20m -11 / - T46W - / +2 3 ✓ Closing fragment
08-02 00:01 20m -12 / - <...> - / -6 2 Partial capture
07-20 03:04 20m -12 / - R3PJ - / -10 2 ✓ Closing fragment
07-20 02:53 20m - / - PD0DDA -12 / - 2 Partial capture
07-19 02:05 20m - / - RD6OZ -14 / - 2 Partial capture
07-19 01:54 20m - / -12 RL9LR -12 / - 2 ✓ Closing fragment
07-19 01:49 20m -14 / - UN8PC - / -13 2 Partial capture
07-19 01:44 20m -13 / - EX8ABR - / -23 2 Partial capture
07-19 01:37 20m -14 / - A41ZZ - / -24 2 ✓ Closing fragment
07-19 01:09 20m -13 / - R2BQM - / -10 2 ✓ Closing fragment
07-19 01:07 20m -14 / - W3A - / -7 3 ✓ Closing fragment
07-19 00:59 20m -10 / - W4PPT - / -14 2 Partial capture
07-19 00:56 20m -10 / - OD5ZZ - / -20 5 ✓ Closing fragment
07-19 00:52 20m -11 / - UT7UJ +4 / - 4 ✓ Closing observed
07-19 00:51 20m -12 / - UA0AV - / - 2 ✓ Closing fragment
07-16 12:23 20m - / -9 DL6TK -5 / - 3 ✓ Closing fragment
07-14 04:17 20m - / - IK4LZH +2 / - 3 Partial capture
07-14 04:16 20m - / - F4LNM -5 / - 3 Partial capture
07-14 04:16 20m - / - SV2HXV -10 / - 2 Partial capture
07-13 03:49 20m - / -10 S51RU -12 / - 2 Partial capture
07-13 03:23 20m - / -1 UA6AKW -10 / - 3 Partial capture
07-09 12:14 20m - / - PD1ADA -15 / - 5 Partial capture
07-08 20:01 20m - / - MI0ULK -13 / - 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
035300 -11  856  K8IS RY3F -10
035415 -13  856  CE2EP K8IS R-14
035445 -13  856  G4RYE K8IS -22
035600  +5  971  K8IS UR5FS KN56 (x2)
035630  -7 1252  K8IS RK6AAC KN95
035700 +10  970  K8IS UR5FS R-02
035700  -7 1252  K8IS RK6AAC KN95
035730  +4  969  K8IS UR5FS R-02
035730 -11 1252  K8IS RK6AAC KN95
035800  +1  969  K8IS UR5FS 73
035800  -3 1252  K8IS RK6AAC KN95
035815 -17  856  UR5FS K8IS 73
035830  -6 1252  K8IS RK6AAC KN95 (x2)

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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