SP5ISM — 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 SP5ISM, decoded by SO8OO in southeastern Poland. 209 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-10-28 and 2026-10-30.

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 209 FT8 messages attributed to SP5ISM as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (57%), followed by 80 m (43%). Most decodes (98%) fell within the six-hour window 11:00-17:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -7 dB.

Overview

209
Messages attributed
3
UTC dates decoded
16
Active 15-min windows
-7 dB
Estimated median S/N

Bands

80m · 90 40m · 119
First attributed message: 2026-10-28
Last attributed message: 2026-10-30 12:40 UTC

Observed FT8 message patterns

Attributed sample
209 messages
Active dates
3 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-16 to +5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 60, strong (≥ -8 dB) 128.

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 SP5ISM 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 SP5ISM

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 · 114 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
290 km (approx.)
Last such locator decoded
2026-10-30 12:39 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 UTCBandSP5ISM S/NCounterpartCounterpart S/NMsgsCapture
10-30 12:39 40m -13 / - DL6BAD - / -4 2 Partial capture
10-30 12:35 40m -14 / - DH1HF - / -16 4 Partial capture
10-30 12:25 40m -18 / - DB3KO -22 / +6 4 ✓ Closing observed
10-30 12:23 40m -19 / - GI3PXT - / -10 3 ✓ Closing fragment
10-30 12:22 40m - / - DK8MT -22 / - 2 Partial capture
10-30 12:21 40m -2 / - IK8NSR -13 / -4 3 Partial capture
10-30 12:20 40m -6 / - UN7LEW - / -7 2 ✓ Closing fragment
10-30 12:17 40m -12 / - SP7ALM - / -16 3 Partial capture
10-30 12:16 40m -12 / - SP4CIW -12 / +2 3 Partial capture
10-30 12:14 40m -11 / +3 LZ1ZF -8 / +6 5 ✓ Full exchange observed
10-30 12:07 40m -10 / - UT3UEH - / 0 3 Partial capture
10-30 12:02 40m -4 / +7 PA3CPS -6 / +3 4 ✓ Full exchange observed
10-30 11:59 40m -5 / - G0HSP - / -5 3 ✓ Closing fragment
10-30 11:51 40m -3 / -9 DJ0WJ -2 / - 4 ✓ Full exchange observed
10-30 11:49 40m -6 / - DM2AL - / +2 3 Partial capture
10-30 11:47 40m -9 / - DL6REX -20 / -4 5 Partial capture
10-30 11:44 40m -8 / - DL6CMF -13 / +6 4 Partial capture
10-30 11:44 40m -3 / -8 DL9KM -9 / +8 5 ✓ Full exchange observed
10-30 11:42 40m -12 / - DH1NGL -9 / +7 4 ✓ Full exchange observed
10-30 11:29 40m -6 / - DG8LAS - / -17 2 Partial capture
10-30 11:29 40m -3 / -3 DM5KK -1 / +8 9 ✓ Full exchange observed
10-30 11:28 40m -5 / - HB9ZHK - / -17 2 Partial capture
10-30 11:24 40m -4 / - HB9ZHK - / -15 3 Partial capture
10-30 11:23 40m -5 / - F4MOJ - / -3 4 ✓ Closing fragment
10-30 11:16 40m - / - DH2NJS -8 / - 11 Partial capture
10-30 11:15 40m -4 / +8 DK7ZT -22 / +2 3 ✓ Full exchange observed
10-30 11:12 40m -4 / +1 OE8PIT +6 / - 5 ✓ Full exchange observed
10-30 11:08 40m -4 / +5 DK7ZT -15 / - 4 Partial capture
10-30 11:08 40m -10 / - PD4RJ - / -5 2 Partial capture
10-29 17:37 40m - / -7 F1UNR -11 / - 3 Partial capture
10-29 17:26 40m - / - OE9GWV -6 / - 4 Partial capture
10-29 17:24 40m - / -2 LZ2CC -2 / - 2 ✓ Closing fragment
10-29 17:18 40m - / -16 PE1NPS -3 / - 3 ✓ Closing fragment
10-29 17:11 40m - / 0 UB3ZKO -12 / - 3 ✓ Closing fragment
10-29 16:58 80m +5 / - LA1OTX - / - 2 Partial capture
10-29 16:55 80m +3 / -6 OE6HTG -8 / -12 7 ✓ Full exchange observed
10-29 16:52 80m +5 / - SQ5N -6 / - 5 ✓ Closing observed
10-29 16:50 80m -8 / -20 DO5AX -21 / -9 3 Partial capture
10-29 16:49 80m -8 / -2 SQ100LKK +6 / - 3 Partial capture
10-29 16:40 80m -15 / 0 SQ8LSB -6 / - 3 Partial capture
10-29 16:36 80m -4 / - LY2EW - / +2 2 Partial capture
10-29 16:35 80m - / - R7DX -7 / - 3 Partial capture
10-29 16:18 40m - / - DA0M -12 / - 2 Partial capture
10-29 16:00 40m - / -4 DA1ST 0 / - 6 ✓ Closing fragment
10-29 15:53 40m - / +6 UT2AU +9 / - 3 ✓ Closing fragment
10-29 15:49 40m - / -17 EX7CQ -17 / - 4 ✓ Closing fragment
10-29 15:48 40m - / -10 G8KHF -10 / - 2 ✓ Closing fragment
10-29 15:41 40m - / - DL7ACA +17 / - 2 Partial capture
10-29 15:40 40m - / -20 M0OXO -11 / - 2 ✓ Closing fragment
10-29 15:31 40m - / +2 OZ2LP 0 / - 6 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
122545 -21 1323  SP5ISM DB3KO JO53
122600 -17 1824  DB3KO SP5ISM +06 (x2)
122645 -21 1902  SP5ISM DK1IO JO42
122645 -22 1324  SP5ISM DB3KO 73
123500 -14 1824  DH1HF SP5ISM -16 (x4)
123700 -17 1823  CQ SP5ISM KO02                        a1 (x3)
123930 -13 1482  DL6BAD SP5ISM -04 (x2)
124115 -19 1004  SP5ISM ON7AC JO11
80m 
UTC    dB Audio  Message
165230  +8 1053  SQ5N SP5ISM KO02
165245  -4 1054  SP5ISM SQ5N 559 0011
165330  -1 1053  SQ5N SP5ISM R+11
165345  -7 1054  SP5ISM SQ5N RR73
165400  +7 1053  SQ5N SP5ISM 73
165530  +5 1116  OE6HTG SP5ISM KO02
165545  -7 1116  SP5ISM OE6HTG -06
165600  +2 1116  OE6HTG SP5ISM R-12
165615 -10 1116  SP5ISM OE6HTG RR73
165630  +1 1116  OE6HTG SP5ISM R-12
165645  -6 1116  SP5ISM OE6HTG RR73
165700  +5 1116  OE6HTG SP5ISM 73
165800  +9  890  LA1OTX SP5ISM KO02 (x2)
170230  -1 1381  OM3KFF SP5ISM KO02

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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