SN5Z — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving SN5Z, decoded by SO8OO in southeastern Poland. 596 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-22 and 2026-07-29.
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 596 FT8 messages attributed to SN5Z as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 80 m (23%) and 20 m (2%). Most decodes (98%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.
Overview
Bands
Last attributed message: 2026-07-29 19:26 UTC
Observed FT8 message patterns
- Attributed sample
- 596 messages
- Active dates
- 7 UTC dates
- Estimated median S/N
- -13 dB
- Estimated 10th-90th percentile
- -19 to +1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 183, moderate (-15 to -9 dB) 242, strong (≥ -8 dB) 171.
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 SN5Z 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 SN5Z
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
- KO03 · 271 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 400 km (approx.)
- Last such locator decoded
- 2026-07-29 19:26 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 UTC | Band | SN5Z S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-29 19:21 | 40m | -13 / +4 | R6LNH | -11 / +9 | 4 | ✓ Full exchange observed |
| 07-29 19:18 | 40m | -16 / - | LY1SR | -8 / +8 | 3 | ✓ Closing observed |
| 07-29 19:16 | 40m | -16 / - | VK2WN | - / -8 | 2 | ✓ Closing fragment |
| 07-29 19:10 | 40m | -16 / - | U1BD | - / - | 2 | ✓ Closing fragment |
| 07-29 19:07 | 40m | -15 / -8 | R5FQ | -14 / - | 4 | ✓ Full exchange observed |
| 07-29 19:04 | 40m | -14 / - | F4WCW | - / - | 3 | ✓ Closing fragment |
| 07-29 19:01 | 40m | -15 / +1 | UA3SCU | -14 / +6 | 4 | ✓ Full exchange observed |
| 07-29 19:01 | 40m | - / -4 | G0UDE | -18 / - | 3 | Partial capture |
| 07-29 19:00 | 40m | -16 / +1 | SP3IPA | -11 / - | 5 | ✓ Full exchange observed |
| 07-29 18:59 | 40m | -15 / - | F4NKF | - / -9 | 2 | ✓ Closing fragment |
| 07-29 18:58 | 40m | -14 / +8 | SP6SOZ | -13 / +10 | 5 | ✓ Full exchange observed |
| 07-29 18:53 | 40m | - / -14 | HF5A | -11 / - | 3 | ✓ Closing fragment |
| 07-29 18:51 | 40m | -17 / - | EA3JEZ | - / -13 | 3 | Partial capture |
| 07-29 18:48 | 40m | -16 / - | JA0LFV | - / -10 | 2 | ✓ Closing fragment |
| 07-29 18:47 | 40m | -16 / - | EA1IOK | - / -25 | 2 | ✓ Closing fragment |
| 07-29 18:45 | 40m | -17 / -11 | UT6HN | -3 / -1 | 5 | ✓ Full exchange observed |
| 07-29 18:40 | 40m | -10 / - | DL9DXL | - / -1 | 2 | Partial capture |
| 07-29 18:38 | 40m | -8 / - | G6OCE | - / -4 | 2 | ✓ Closing fragment |
| 07-29 18:33 | 40m | -9 / +3 | SP3BVI | -7 / -2 | 2 | Partial capture |
| 07-29 18:26 | 40m | -11 / - | LB5WB | - / +4 | 2 | ✓ Closing fragment |
| 07-29 18:23 | 40m | -8 / - | EB1ESK | - / -19 | 3 | ✓ Closing fragment |
| 07-29 18:20 | 40m | -10 / -18 | UR5VLC | -7 / +3 | 3 | ✓ Full exchange observed |
| 07-29 18:17 | 40m | - / -21 | UX2QX | -5 / - | 3 | ✓ Closing fragment |
| 07-29 18:17 | 40m | -11 / - | DL4DP | - / -11 | 2 | ✓ Closing fragment |
| 07-29 18:14 | 40m | -10 / - | OZ0A | -12 / - | 4 | ✓ Full exchange observed |
| 07-29 18:12 | 40m | -11 / - | IZ8PPI | - / -21 | 2 | ✓ Closing fragment |
| 07-29 18:10 | 40m | -10 / - | R1TAX | - / +5 | 2 | ✓ Closing fragment |
| 07-29 18:08 | 40m | -10 / 0 | DL6EL | -16 / -3 | 5 | ✓ Full exchange observed |
| 07-29 18:07 | 40m | -10 / - | M7WFZ | - / -15 | 2 | ✓ Closing fragment |
| 07-29 18:04 | 40m | - / -1 | PA2RO | -6 / - | 2 | Partial capture |
| 07-29 17:22 | 40m | -13 / -11 | OE3DXA | +2 / +7 | 3 | ✓ Full exchange observed |
| 07-29 17:21 | 40m | -10 / - | R6ZB | - / +4 | 2 | ✓ Closing fragment |
| 07-29 17:14 | 40m | - / -4 | OE3DXA | +9 / - | 2 | Partial capture |
| 07-29 16:58 | 40m | - / -6 | US7UK | -15 / - | 4 | ✓ Closing fragment |
| 07-29 16:48 | 40m | - / -13 | RN6AK | -6 / - | 2 | ✓ Closing fragment |
| 07-29 16:25 | 40m | - / - | SP6TO | -16 / - | 2 | Partial capture |
| 07-29 16:25 | 40m | - / -7 | UA3QNA | -8 / - | 2 | ✓ Closing fragment |
| 07-29 16:23 | 40m | - / +1 | 3Z0L | -12 / - | 3 | Partial capture |
| 07-29 16:22 | 40m | -17 / -11 | RD7LC | -17 / - | 3 | ✓ Full exchange observed |
| 07-28 19:00 | 80m | +6 / -13 | OK1VKX | +7 / +4 | 5 | ✓ Full exchange observed |
| 07-28 18:55 | 80m | - / - | OK1VKX | +17 / - | 2 | Partial capture |
| 07-28 18:55 | 80m | - / -20 | RA3TOS | -12 / - | 6 | Partial capture |
| 07-28 18:54 | 80m | - / - | DA6HU | -10 / - | 6 | Partial capture |
| 07-28 18:53 | 80m | - / - | DO8JB | -18 / - | 3 | Partial capture |
| 07-28 18:50 | 80m | -3 / -18 | YO6DBA | +3 / -9 | 8 | ✓ Full exchange observed |
| 07-28 18:48 | 80m | +1 / +1 | YL2EA | +5 / - | 5 | ✓ Full exchange observed |
| 07-28 18:46 | 80m | - / - | UR4LG | +1 / - | 4 | Partial capture |
| 07-28 18:44 | 80m | +6 / -14 | OZ1EDR | -8 / -19 | 9 | ✓ Full exchange observed |
| 07-28 18:35 | 40m | -20 / - | UA1RC | - / +2 | 2 | ✓ Closing fragment |
| 07-28 18:33 | 40m | -20 / +1 | SP6ZJB | -12 / - | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 192000 -16 1177 CQ SN5Z KO03 192100 -20 1177 RW4HBD SN5Z RR73 192130 -14 1177 CQ SN5Z KO03 192145 -9 1178 SN5Z R6LNH KN97 192200 -13 1177 R6LNH SN5Z +09 192215 -12 1177 SN5Z R6LNH R+04 (x2) 192300 -17 1177 CQ SN5Z KO03 (x8)
UTC dB Audio Message 185615 +18 855 SN5Z OK1VKX JN69 185615 -13 1198 SN5Z DA6HU JN59 185645 -9 772 SN5Z RA3TOS -20 185645 -6 1197 SN5Z DA6HU JN59 185715 -11 771 SN5Z RA3TOS -20 185715 -9 1197 SN5Z DA6HU JN59 185745 -17 772 SN5Z RA3TOS -20 185745 -10 1198 SN5Z DA6HU JN59 185945 -10 772 SN5Z RA3TOS -20 190030 +8 855 OK1VKX SN5Z +04 (x2) 190115 +6 855 SN5Z OK1VKX R-13 190130 +4 855 OK1VKX SN5Z RR73 190145 +8 854 SN5Z OK1VKX 73 190230 +4 855 CQ SN5Z KO03
UTC dB Audio Message 122845 +13 463 SN5Z IK4LZH R+06 (x2) 123145 -16 826 SN5Z RC5F KO85 (x2) 125715 +0 323 SN5Z RA6OY KN88 (x3) 153445 -7 688 SN5Z M7EJN IO95 (x2) 154815 +1 688 SN5Z E70SZ JN84 (x3) 155045 -14 1888 SN5Z R4FDW -15 (x3)
UTC dB Audio Message 201115 -1 1018 SN5Z OM2WQ R-06 201130 -14 797 OM2WQ SN5Z RR73 201145 +0 1018 SN5Z OM2WQ 73 201200 -12 797 CQ SN5Z KO03 (x2) 201315 -14 2092 SN5Z SQ9PBV JN99 (x2) 201400 -11 797 SQ9PBV SN5Z RR73 201415 -16 2092 SN5Z SQ9PBV 73 201415 -9 1284 SN5Z OK1DXR JO60 (x3) 201530 -13 797 CQ SN5Z KO03 (x2) 201745 -11 796 SN5Z OZ0A JO55
UTC dB Audio Message 182945 -4 2172 SN5Z SP9SOS KN09
UTC dB Audio Message 083815 -2 2687 SN5Z F1PBZ -13 (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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