W8JRK — 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: EN72

Receiver-side FT8 activity involving W8JRK, decoded by SO8OO in southeastern Poland. 253 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-07-21 and 2026-09-07.

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 253 FT8 messages attributed to W8JRK as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (96%), followed by 40 m (4%). Most decodes (96%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

253
Messages attributed
9
UTC dates decoded
33
Active 15-min windows
-17 dB
Estimated median S/N

Bands

40m · 9 20m · 244
First attributed message: 2026-07-21
Last attributed message: 2026-09-07 23:47 UTC

Observed FT8 message patterns

Attributed sample
253 messages
Active dates
9 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-21 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 149, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 17.

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 W8JRK 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 W8JRK

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
EN72 · 108 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,524 km (approx.)
Last such locator decoded
2026-08-24 03:51 UTC

Other locator fields attributed to this token: FN22 (4).

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 UTCBandW8JRK S/NCounterpartCounterpart S/NMsgsCapture
10-14 03:26 40m - / - CT2GQA -19 / - 5 Partial capture
10-02 03:02 40m - / -13 ON5ZZ -5 / - 4 ✓ Closing fragment
09-08 04:07 40m - / -20 IK2XDE -5 / - 3 ✓ Closing fragment
09-08 03:26 40m - / -15 9A170NT +4 / - 7 Partial capture
09-08 03:00 40m - / -14 9A170NT +6 / - 6 Partial capture
09-07 23:44 40m -11 / - 9V1YC - / - 4 Partial capture
09-06 05:35 40m - / - 2E0TXZ -16 / - 2 ✓ Closing fragment
09-06 05:35 40m - / - EA1HVS -16 / - 3 ✓ Closing fragment
09-06 05:19 40m - / -10 T77NC -3 / - 2 ✓ Closing fragment
09-06 05:04 40m - / - UW5ZM +13 / - 2 Partial capture
09-03 04:38 40m - / -14 9A4N +3 / - 3 ✓ Closing fragment
09-03 04:26 40m - / -16 II7MGLE -9 / - 2 Partial capture
09-01 05:11 40m - / - F4LTX -18 / - 2 Partial capture
09-01 05:09 40m - / -13 G5TV -13 / - 4 ✓ Closing fragment
09-01 04:54 40m - / -11 PD0MNO -10 / - 4 Partial capture
08-24 04:09 40m - / -11 DL3OCF -10 / - 2 Partial capture
08-24 04:09 40m - / - DK1STE -18 / - 2 Partial capture
08-24 03:42 40m -24 / -17 G3JVA -10 / -24 7 ✓ Full exchange observed
08-24 03:39 40m - / -15 TA2FE +1 / - 2 ✓ Closing fragment
08-23 19:01 20m - / -15 IS0YHV 0 / - 2 Partial capture
08-23 01:24 20m -9 / - W5DOC - / -16 5 Partial capture
08-23 01:19 20m -10 / - K7LNY - / -14 2 ✓ Closing fragment
08-23 01:17 20m -10 / -22 IK6DLK -9 / -24 5 ✓ Full exchange observed
08-23 01:16 20m -11 / - SA3LEN - / +7 2 ✓ Closing fragment
08-23 01:14 20m -11 / - A92AE - / - 3 Partial capture
08-23 01:11 20m - / - DL1VCA +4 / - 4 Partial capture
08-23 01:11 20m - / -2 IZ7RJT -9 / - 3 ✓ Closing fragment
08-23 01:06 20m -12 / - VE5UFO - / -8 6 ✓ Closing fragment
08-23 00:49 20m -8 / - SV1MOZ - / -7 5 Partial capture
08-23 00:45 20m -10 / - IU0VOG - / -9 6 ✓ Closing fragment
08-23 00:42 20m -10 / - WV4F - / -6 2 ✓ Closing fragment
08-23 00:39 20m -11 / - RD1A - / -22 4 ✓ Closing fragment
08-23 00:33 20m - / - F1IQH -14 / - 2 Partial capture
08-22 23:51 20m -8 / -9 LX1FDE -5 / -9 8 ✓ Full exchange observed
08-22 23:48 20m - / - 9K2MP -2 / - 2 ✓ Closing fragment
08-22 20:55 20m - / -11 ON5GQ +8 / - 5 ✓ Closing fragment
08-21 02:03 20m - / -14 A61OK -18 / - 4 Partial capture
08-09 01:15 80m - / - CT7AUT -12 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
032845  +4 2786  W8JRK 9A170NT -15 (x3)
040730  -1 1535  W8JRK IK2XDE -20 (x3)
030230  -8 1837  W8JRK ON5ZZ -13 (x4)
032615 -19 1714  W8JRK CT2GQA IM58 (x5)
20m 
UTC    dB Audio  Message
012045 -13 1435  CQ RU W8JRK EN72 (x5)
012415  -9 1435  W5DOC W8JRK -16 (x5)
182330  -1 1025  W8JRK GJ0KYZ RR73
184115 -13  702  W8JRK SP4JAW RR73
190145  -4 1068  W8JRK IS0YHV -15 (x2)
192815 -10 1508  W8JRK OK2BRV -15
80m 
UTC    dB Audio  Message
011545 -11 1469  W8JRK CT7AUT IM67 (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.

CW

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

Explore CW reception at SO8OO

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