RI0SP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: IR35

Receiver-side FT8 activity involving RI0SP, decoded by SO8OO in southeastern Poland. 4,483 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-07-10.

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 4,483 FT8 messages attributed to RI0SP as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 40 m (0%). The busiest six-hour window was 22:00-04:00 UTC, containing 40% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -5.3 dB.

Overview

4,483
Messages attributed
20
UTC dates decoded
406
Active 15-min windows
-5.3 dB
Estimated median S/N

Bands

40m · 16 20m · 4,467
First attributed message: 2026-06-06
Last attributed message: 2026-07-10 17:06 UTC

Observed FT8 message patterns

Attributed sample
4,483 messages
Active dates
20 UTC dates
Estimated median S/N
-5.3 dB
Estimated 10th-90th percentile
-14 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 264, moderate (-15 to -9 dB) 1,304, strong (≥ -8 dB) 2,915.

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 RI0SP 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 RI0SP

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
IR35 · 792 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
4,052 km (approx.)
Last such locator decoded
2026-06-10 17:08 UTC

Other locator fields attributed to this token: IR74 (186), IR55 (129), IR64 (97), and IR45 (80).

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

The numeric facts remain available, but this square is outside the latitude range of the interactive Web Mercator map.

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 UTCBandRI0SP S/NCounterpartCounterpart S/NMsgsCapture
07-15 14:21 20m - / - EA3RR -5 / - 5 Partial capture
07-15 12:55 20m - / - EA1A -18 / - 2 ✓ Closing fragment
07-15 12:54 20m - / - R7OQ -16 / - 2 ✓ Closing fragment
07-15 12:47 20m - / -1 PD4RD -2 / - 2 ✓ Closing fragment
07-15 12:46 20m - / -10 RU6K -10 / - 4 ✓ Closing fragment
07-15 10:18 20m - / -18 EA1AKS -4 / - 3 ✓ Closing fragment
07-15 10:15 20m - / -24 EA5AR -10 / - 3 ✓ Closing fragment
07-15 10:15 20m - / -9 RX3AEX -20 / - 2 ✓ Closing fragment
07-15 10:11 20m - / -13 DL1AXX -8 / - 2 ✓ Closing fragment
07-15 10:08 20m - / -19 RZ7KR -10 / - 2 Partial capture
07-15 10:08 20m - / +4 F1PBZ -6 / - 2 ✓ Closing fragment
07-15 09:57 20m - / -2 DL3AQJ -10 / - 2 Partial capture
07-15 09:55 20m - / - IW3GJF -2 / - 7 Partial capture
07-15 09:54 20m - / -12 S52D 0 / - 4 ✓ Closing fragment
07-15 09:51 20m - / -9 G8DQP -16 / - 2 Partial capture
07-15 09:45 20m - / -10 9A5CY -8 / - 2 ✓ Closing fragment
07-15 09:45 20m - / -9 IK3SSW +5 / - 3 ✓ Closing fragment
07-15 09:44 20m - / -10 DF2RQ -1 / - 2 Partial capture
07-15 09:42 20m - / -23 EA7DAP -16 / - 3 ✓ Closing fragment
07-15 09:00 20m - / - EB3JT -18 / - 2 Partial capture
07-15 08:55 20m - / - EB3JT -14 / - 4 Partial capture
07-15 08:48 20m - / - DK8NX -2 / - 2 Partial capture
07-15 08:47 20m - / -4 S59A -2 / - 6 Partial capture
07-15 08:46 20m - / - EA3FH -16 / - 5 Partial capture
07-15 08:43 20m - / -6 S58N +7 / - 11 Partial capture
07-15 08:43 20m - / -16 S59A -8 / - 2 Partial capture
07-15 08:38 20m - / - PA3DOL -16 / - 2 Partial capture
07-15 08:36 20m - / -11 RU4SO -6 / - 8 Partial capture
07-15 08:35 20m - / -3 DF9OX -2 / - 4 ✓ Closing fragment
07-15 08:35 20m - / - EA2DP -10 / - 13 Partial capture
07-15 08:35 20m - / - EA3FH -9 / - 15 Partial capture
07-15 08:28 20m - / -16 F4IIX +3 / - 2 Partial capture
07-15 08:18 20m - / -17 RU6K -12 / - 3 Partial capture
07-15 08:13 20m - / -13 DL6ZFG -3 / - 3 ✓ Closing fragment
07-15 07:59 20m - / -12 IK5PWQ +3 / - 2 Partial capture
07-15 07:52 20m - / -23 IK5PWQ -2 / - 2 Partial capture
07-15 07:35 20m - / -14 DF9OX -5 / - 3 ✓ Closing fragment
07-15 07:19 20m - / -21 RU6K -7 / - 2 Partial capture
07-15 07:13 20m - / -15 RU6K -10 / - 4 ✓ Closing fragment
07-15 07:11 20m - / -14 PA3DOL -20 / - 2 Partial capture
07-15 07:03 20m - / -14 PA3DOL -17 / - 7 Partial capture
07-15 07:01 20m - / -3 IW4DNI -6 / - 2 ✓ Closing fragment
07-15 06:58 20m - / -13 F6FHO +6 / - 3 ✓ Closing fragment
07-15 06:43 20m - / - F8NHF -14 / - 4 ✓ Closing fragment
07-15 06:41 20m - / -11 EA7OC -4 / - 2 ✓ Closing fragment
07-15 06:34 20m - / -10 HB9BUN -3 / - 2 Partial capture
07-15 06:33 20m - / -11 EA7OC -12 / - 2 Partial capture
07-15 06:32 20m - / - EA1DFP -14 / - 2 Partial capture
07-15 06:31 20m - / -23 F6GCP -8 / - 26 ✓ Closing fragment
07-15 06:26 20m - / - EB3JT -5 / - 3 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
124715  -1 2863  RI0SP PD4RD R-01
124715 -11 2394  RI0SP RU6K -10
124745  -4 2863  RI0SP PD4RD 73
124745 -13 2394  RI0SP RU6K -10 (x2)
125445 -17 2019  RI0SP R7OQ KN98
125545 -17 2307  RI0SP EA1A IN73
125545 -16 2019  RI0SP R7OQ 73
125745 -19 2307  RI0SP EA1A 73
142130  -7 2399  RI0SP EA3RR JN11 (x6)
40m 
UTC    dB Audio  Message
232645 +13  399  RI0SP DH0GBC JN69
232645 -16 2100  OH3BYZ RI0SP -19
232730 -12 2310  RI0SP DM5KN JO30
232800 -21 2259  RI0SP EC2AHS IN82 (x2)
232930 -17 2310  RI0SP DM5KN JO30
210645  -1 2470  RI0SP F6KHM -13
210715  -1 2731  <RI0SP> DR800WE
210715  +0 2470  RI0SP F6KHM -13
210715  -7 1338  RI0SP F5RMK IN98
210745  +0 2470  RI0SP F6KHM -13 (x2)
210915  -1 2637  RI0SP RT5C KO85
210915  -3 2566  RI0SP F6KHM -14
193915 -14 2545  RI0SP OZ1LDO JO45
10m 
UTC    dB Audio  Message
144200  +4 2534  RI0SP SV2CXW KN10 (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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