SQ5RJK — 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: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SQ5RJK, decoded by SO8OO in southeastern Poland. 32 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-16 and 2026-10-05.

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 32 FT8 messages attributed to SQ5RJK as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (41%), followed by 160 m (31%) and 40 m (28%). 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 strong S/N range (75%); the estimated median was -3 dB.

Overview

32
Messages attributed
7
UTC dates decoded
8
Active 15-min windows
-3 dB
Estimated median S/N

Bands

160m · 10 80m · 13 40m · 9
First attributed message: 2026-08-16
Last attributed message: 2026-10-05 20:50 UTC

Observed FT8 message patterns

Attributed sample
32 messages
Active dates
7 UTC dates
Estimated median S/N
-3 dB
Estimated 10th-90th percentile
-13 to +8 dB
Recurring-pattern threshold
Met

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

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 SQ5RJK 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 SQ5RJK

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
KO02 · 20 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
290 km (approx.)
Last such locator decoded
2026-10-05 20:48 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 UTCBandSQ5RJK S/NCounterpartCounterpart S/NMsgsCapture
10-05 20:50 80m - / - 9A4ZM +12 / - 2 Partial capture
10-05 20:48 80m +4 / +8 OK1ALF +9 / -10 5 Partial capture
10-05 20:45 80m +4 / - SP3MZ 0 / - 6 ✓ Closing observed
10-04 08:05 40m - / - YO8TCG -11 / - 10 Partial capture
10-04 07:55 40m - / -15 DL9KM -4 / - 2 Partial capture
10-03 20:26 40m - / - OH7BDI -14 / - 2 Partial capture
10-03 20:23 40m - / -19 IQ4JO +2 / - 2 ✓ Closing fragment
10-02 19:56 80m -2 / -2 SP4WJ -5 / -16 9 ✓ Full exchange observed
10-02 19:55 80m - / - DO4DXA +2 / - 3 Partial capture
10-02 19:54 80m - / -13 UA4FKT +3 / - 3 Partial capture
10-02 19:51 80m -2 / - R3PLN - / - 2 Partial capture
09-05 18:38 160m - / - SP9UPH +10 / - 3 Partial capture
09-05 18:37 160m -4 / -14 RZ3DW +10 / -11 4 Partial capture
09-05 18:35 160m -13 / -13 R3GO -4 / - 4 Partial capture
09-05 18:33 160m -13 / -17 EW1I +2 / -14 6 ✓ Full exchange observed
08-31 18:20 40m -1 / -3 EW8AAC -8 / -12 7 ✓ Full exchange observed
08-31 18:18 40m +5 / - E74K - / - 3 Partial capture
08-23 21:00 160m - / - UX7QV +9 / - 7 Partial capture
08-23 20:57 160m - / - RA3WY -1 / - 4 Partial capture
08-23 20:48 40m - / +5 DL6UM -2 / - 3 Partial capture
08-23 20:45 40m - / - F4BYA +2 / - 3 Partial capture
08-23 20:45 40m - / 0 OK7TB +1 / - 7 ✓ Closing fragment
08-23 20:45 40m - / 0 SN40KZE +8 / - 3 ✓ Closing fragment
08-16 18:25 40m - / - 9A4ZM -4 / - 2 Partial capture
08-16 18:23 40m -1 / +6 RX3DPK/LH -8 / -3 3 Partial capture
08-16 15:36 20m - / 0 DL9TNT -17 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
195915  -6 2978  SQ5RJK SP4WJ 73
195630  +2 1333  Z62NS SQ5RJK KO02
204530  +0 1346  SP3MZ SQ5RJK KO02
204545  +0 1345  SQ5RJK SP3MZ +15 (x4)
204730  +8 1346  SP3MZ SQ5RJK 73
204830  +9  987  OK1ALF SQ5RJK KO02
204915 +11  941  SQ5RJK OK1ALF +08 (x2)
205000  +0 1415  OK1ALF SQ5RJK R-10
205015  +7  941  SQ5RJK OK1ALF RRR
205045 +13 1412  SQ5RJK 9A4ZM JN86 (x2)
40m 
UTC    dB Audio  Message
202645 -15 1629  SQ5RJK OH7BDI KP42 (x2)
075315  -7  387  SQ5RJK DK7UY JO44
075545  -2 1344  SQ5RJK DL9KM JN68 (x2)
080545 -10 1029  SQ5RJK YO8TCG KN36 (x10)
160m 
UTC    dB Audio  Message
183400  +1 1140  SQ5RJK EW1I -17
183415 -14 1140  EW1I SQ5RJK R-14
183430  +2 1140  SQ5RJK EW1I RR73
183445 -13 1139  EW1I SQ5RJK 73
183545 -10 1292  SQ5RJK R3GO -13
183600 -13 1293  R3GO SQ5RJK KO02
183615  +0 1292  SQ5RJK R3GO -16 (x2)
183700  -3 2575  RZ3DW SQ5RJK KO02
183715  +7 2576  SQ5RJK RZ3DW -14
183730  -5 2574  RZ3DW SQ5RJK R-11
183745 +14 2576  SQ5RJK RZ3DW RRR
183845 +11  961  SQ5RJK SP9UPH JO90 (x3)
20m 
UTC    dB Audio  Message
153600 -15 1630  SQ5RJK DL9TNT +00 (x4)
180100 -22 1670  SQ5RJK PD1BJO JO32

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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