MI5JYK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Northern Ireland Most frequent locator attributed to this token: IO74

Receiver-side FT8 activity involving MI5JYK, decoded by SO8OO in southeastern Poland. 197 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-07-05 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 197 FT8 messages attributed to MI5JYK as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (54%), followed by 20 m (44%) and 80 m (2%). Most decodes (89%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (87%); the estimated median was -21 dB.

Overview

197
Messages attributed
19
UTC dates decoded
51
Active 15-min windows
-21 dB
Estimated median S/N

Bands

First attributed message: 2026-07-05
Last attributed message: 2026-09-07 16:24 UTC

Observed FT8 message patterns

Attributed sample
197 messages
Active dates
19 UTC dates
Estimated median S/N
-21 dB
Estimated 10th-90th percentile
-24 to -15 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 172, moderate (-15 to -9 dB) 25, 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.

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 MI5JYK

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
IO74 · 150 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,881 km (approx.)
Last such locator decoded
2026-09-07 16:23 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 UTCBandMI5JYK S/NCounterpartCounterpart S/NMsgsCapture
09-08 16:06 40m - / -13 DL1LKG +1 / - 5 Partial capture
09-08 15:53 40m - / -17 UC1Q -8 / - 4 ✓ Closing fragment
09-08 15:30 40m - / - PD0JHM -10 / - 2 ✓ Closing fragment
09-08 15:28 40m - / -16 DL7BO +15 / - 2 ✓ Closing fragment
09-07 18:30 40m - / - RW3DDZ -8 / - 2 Partial capture
09-07 18:29 40m - / -20 SP6IZU -6 / - 3 Partial capture
09-07 16:23 40m -22 / - LA7PKA - / -8 2 ✓ Closing fragment
09-07 16:20 40m - / - LZ2XF -2 / - 2 Partial capture
09-07 16:14 40m - / - R2GFN +1 / - 4 Partial capture
09-07 16:14 40m - / - SP5PSZ -17 / - 3 Partial capture
09-07 16:00 40m - / -2 DF5DY +1 / - 5 ✓ Closing fragment
09-07 15:48 40m - / -15 IU2KNG -4 / - 2 Partial capture
09-07 15:34 40m - / -18 EW4TT +6 / - 4 ✓ Closing fragment
09-06 13:38 40m - / -20 DL7UKM -6 / - 5 ✓ Closing fragment
09-06 10:52 40m - / -8 OU7K/P -14 / - 2 ✓ Closing fragment
09-05 12:38 40m - / -16 DL8HXP -22 / - 4 ✓ Closing fragment
09-05 10:56 40m - / -11 DF8XC -13 / - 3 ✓ Closing fragment
09-04 18:45 40m - / - OE6TNO +1 / - 6 Partial capture
09-04 18:41 40m -14 / -20 ON5AI +1 / -11 4 ✓ Full exchange observed
09-04 18:39 40m - / - OE6TNO 0 / - 2 Partial capture
09-04 18:36 40m - / -14 SP3IBS +12 / - 3 ✓ Closing fragment
09-04 18:34 40m -20 / - F4JYH -9 / -16 3 ✓ Closing observed
09-04 18:33 40m - / - OE6TNO -4 / - 2 Partial capture
09-04 18:33 40m - / - G4MHJ -12 / - 2 Partial capture
09-04 18:28 40m - / - OK2PAK -9 / - 2 Partial capture
09-04 18:20 40m - / - PA1MOS -16 / - 2 Partial capture
09-04 18:20 40m - / - YU1BV +5 / - 3 Partial capture
09-04 18:10 40m - / - F4JYP -3 / - 4 ✓ Closing fragment
09-04 18:10 40m - / - R6ZGS -8 / - 3 Partial capture
09-04 18:03 40m - / - IK1MJK -12 / - 2 Partial capture
09-04 17:52 40m - / -2 OZ4MK -11 / - 3 Partial capture
09-04 17:43 40m - / -16 RU3DNN -5 / - 6 Partial capture
09-04 17:31 40m - / -18 R3OR +4 / - 2 ✓ Closing fragment
09-04 12:32 40m - / -10 DK8EW +1 / - 2 ✓ Closing fragment
09-03 19:14 40m - / -11 LA1KUA +5 / - 7 Partial capture
09-03 19:11 40m -18 / -16 RW4HBG +7 / 0 6 Partial capture
09-03 18:49 40m - / -4 I2VGW -4 / - 4 ✓ Closing fragment
09-03 18:43 40m - / -17 F4MZI -2 / - 6 ✓ Closing fragment
09-03 18:25 40m - / +3 OZ7SKB/P -3 / - 4 ✓ Closing fragment
09-03 18:22 40m - / -23 EA5IYD -10 / - 3 ✓ Closing fragment
09-03 18:03 40m - / -18 EX7CQ -4 / - 4 ✓ Closing fragment
09-03 17:56 40m - / -24 OK1AAM +12 / - 2 Partial capture
09-03 16:29 40m - / -8 SN40KZE -2 / - 2 Partial capture
09-03 16:22 40m - / - SP6RTX -8 / - 2 Partial capture
09-03 16:10 40m - / - OK1PHM 0 / - 2 Partial capture
09-02 21:47 40m -18 / -15 OV6ZM 0 / 0 4 ✓ Full exchange observed
09-02 21:43 40m - / - EA5FD -2 / - 2 Partial capture
09-02 21:42 40m - / - F4BYA +10 / - 2 Partial capture
09-02 21:42 40m - / - G7RCQ -7 / - 5 Partial capture
09-02 21:39 40m - / - F4BYA +16 / - 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
151545 -17 1719  MI5JYK PD1WMD 73
152015 -12 1719  MI5JYK ON4AGV R-04
152815 +16  393  MI5JYK DL7BO -16 (x2)
153045 -13  998  MI5JYK PD0JHM JO22 (x2)
155315  -6  786  MI5JYK UC1Q KO89 (x4)
160645  -8  479  MI5JYK DL1LKG -13 (x5)
80m
UTC    dB Audio  Message
232445 -12 1166  MI5JYK EA5HM IM99 (x3)
192900  -2 1687  MI5JYK SP3IOE JO72 (x2)
193130  -4 1597  MI5JYK DO6KD JO51 (x4)
193400 +19  356  MI5JYK R6OG KN84
193445 -24 1688  R6OG MI5JYK +00
193715 -24 1689  DL2TT MI5JYK IO74
195230  -2 1689  MI5JYK RA3LBW KO54
195600  +3 1689  MI5JYK SP9DGO KN09 (x2)
10m
UTC    dB Audio  Message
131745  -6  490  MI5JYK IK4LZH JN54
131500 -21 1749  MI5JYK F4NBB RR73
174215 -19 1522  MI5JYK PA1GLD JO21 (x3)
175045  -5  554  MI5JYK DH1KJ JN48 (x2)
175215 -20 1143  MI5JYK PE1MHY +03
194630  -8 1740  MI5JYK DF9AO -18 (x3)
195330 -16 1840  MI5JYK DL8TT +06 (x2)
200830 -16 1742  MI5JYK PD2V -09 (x2)
20m
UTC    dB Audio  Message
142745 -14 1749  MI5JYK DG5PW JO30 (x6)
144415  -8  463  MI5JYK IK4LZH JN54 (x2)
144615 -13 1753  MI5JYK TA4SSK KM57 (x4)
150545 -24 2022  MI5JYK DF9OP -17
130115  -7 2531  MI5JYK F1PBZ -16 (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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