SN1A — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO73

Receiver-side FT8 activity involving SN1A, decoded by SO8OO in southeastern Poland. 3,243 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 26 UTC dates in the available aggregate history. Observed between 2026-07-17 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 3,243 FT8 messages attributed to SN1A as the transmitting token by decoded message structure across 26 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (68%), followed by 80 m (25%) and 60 m (7%). Most decodes (58%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.5 dB.

Overview

3,243
Messages attributed
26
UTC dates decoded
243
Active 15-min windows
-10.5 dB
Estimated median S/N

Bands

80m · 807 60m · 242 40m · 2,194
First attributed message: 2026-07-17
Last attributed message: 2026-09-07 19:01 UTC

Observed FT8 message patterns

Attributed sample
3,243 messages
Active dates
26 UTC dates
Estimated median S/N
-10.5 dB
Estimated 10th-90th percentile
-19.8 to +6.3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 898, moderate (-15 to -9 dB) 872, strong (≥ -8 dB) 1,473.

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 SN1A 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 SN1A

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
JO73 · 980 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
613 km (approx.)
Last such locator decoded
2026-09-07 18:59 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 UTCBandSN1A S/NCounterpartCounterpart S/NMsgsCapture
09-07 19:02 40m - / - RN3YN -3 / - 7 Partial capture
09-07 19:01 40m -4 / +8 DL9DX +4 / -5 4 ✓ Full exchange observed
09-07 18:59 40m -2 / -3 UW5KW -14 / -3 5 ✓ Full exchange observed
09-07 18:58 40m +2 / - F5LMJ - / -13 2 ✓ Closing fragment
09-07 18:56 40m -4 / -4 SQ2FRF 0 / -9 5 ✓ Full exchange observed
09-07 18:55 40m 0 / - GM0AXY - / -9 3 ✓ Closing fragment
09-07 18:51 40m - / -12 RK3YWA 0 / - 3 ✓ Closing fragment
09-07 18:46 40m 0 / +1 RA4NAL -1 / - 3 ✓ Closing observed
09-07 18:43 40m -2 / - DC9GT - / - 2 ✓ Closing fragment
09-07 18:41 40m -2 / - SN40KZE - / -5 2 Partial capture
09-07 18:39 40m -3 / - UN8DAW - / -20 3 ✓ Closing fragment
09-07 18:38 40m -7 / +1 9A7DP -3 / -10 4 ✓ Full exchange observed
09-07 18:36 40m -3 / - DL4KAG - / -20 3 ✓ Closing fragment
09-07 18:34 40m -4 / -1 R1CBW -8 / -1 4 ✓ Full exchange observed
09-07 18:30 40m 0 / - UA2FFD - / - 2 Partial capture
09-07 18:27 40m -4 / - IT9AKB - / -18 2 Partial capture
09-07 18:25 40m -2 / +9 SP3GHC -2 / -10 2 Partial capture
09-07 18:24 40m - / -8 MM8FKF -4 / - 2 Partial capture
09-07 18:24 40m -2 / - R2HE -10 / -5 4 ✓ Closing observed
09-07 18:22 40m - / - SQ100PKP -8 / - 2 ✓ Closing fragment
09-07 18:22 40m - / - SP3GAX +12 / - 4 Partial capture
09-07 18:19 40m -5 / -4 RC2Y +3 / -9 5 ✓ Full exchange observed
09-07 18:17 40m -2 / - IU2OQT +9 / -10 3 ✓ Closing observed
09-07 18:14 40m - / -9 SQ100PKP -3 / - 6 Partial capture
09-07 18:11 40m -2 / - PA0LCC - / - 3 Partial capture
09-06 16:42 40m -2 / - JR1UTC -21 / -9 3 ✓ Closing observed
09-06 16:41 40m - / -2 SO100PKP -3 / - 2 Partial capture
09-06 16:41 40m 0 / - HF100PKP - / -7 2 Partial capture
09-06 16:39 40m - / -8 R73SLET 0 / - 2 Partial capture
09-06 16:37 40m -6 / - IW2CAK - / -7 2 ✓ Closing fragment
09-06 16:37 40m 0 / - SP1373AB - / -11 2 Partial capture
09-06 16:36 40m 0 / -1 SP2PAQ +4 / +4 2 Partial capture
09-06 16:34 40m -1 / - LB5WB -7 / +1 2 ✓ Closing observed
09-06 16:32 40m -2 / -9 SQ7FZR -16 / -6 5 ✓ Full exchange observed
09-06 16:30 40m +1 / -7 DL9GCG -4 / +1 2 Partial capture
09-06 16:29 40m +1 / -12 RV9UNK -14 / -9 4 ✓ Full exchange observed
09-06 16:27 40m -4 / -16 UB6OAJ +3 / -7 4 ✓ Full exchange observed
09-06 16:26 40m -2 / - R3XG - / -12 2 ✓ Closing fragment
09-06 16:26 40m - / -7 UT4VL -3 / - 2 Partial capture
09-06 16:24 40m -4 / - US5WAN - / -3 2 ✓ Closing fragment
09-06 16:23 40m -4 / - GX0ERG -18 / -6 3 ✓ Closing observed
09-03 19:12 40m -4 / - MJ7UKT - / -5 3 Partial capture
09-03 19:08 40m -8 / - 3Z100PKP - / -5 2 Partial capture
09-03 19:05 40m +1 / -8 MJ7UKT -4 / -2 6 Partial capture
09-03 19:03 40m +1 / - <...> - / -14 3 Partial capture
09-03 19:02 40m 0 / -10 R4PFY -10 / - 3 ✓ Closing observed
09-03 03:44 40m - / -19 VA2EHQ -9 / - 2 ✓ Closing fragment
09-03 03:37 40m - / -2 II7MGLE -6 / - 4 Partial capture
09-03 03:34 40m - / -18 GM6URC -10 / - 2 Partial capture
09-03 03:32 40m - / +7 UA3RBM -12 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
185930 -14 1635  SN1A UW5KW -03
185945  -2 1636  UW5KW SN1A R-03
190000 -15 1636  SN1A UW5KW RR73
190015  +0 1636  UW5KW SN1A 73
190100  +4 2104  SN1A DL9DX +08
190115  -3 1636  DL9DX SN1A R-05
190130  +3 2105  SN1A DL9DX RR73
190145  -4 1637  DL9DX SN1A 73
190230  -6  646  SN1A RN3YN KO73 (x7)
80m 
UTC    dB Audio  Message
035545  -2 1603  DH8KAM SN1A JO73
035745  +1 1604  WC4H SN1A JO73
035830  +1 1603  F4EQH SN1A JO73
035915  -5 1603  F5RQQ SN1A JO73
040045  -3 1603  DH8KAM SN1A JO73
040045  -1  563  SN1A F4EQH +08 (x2)
040115 -19 1483  SN1A IK6GTF -09 (x3)
040230  -4 1603  DL6LG SN1A JO73 (x4)
040445  +5 1603  WB8SCG SN1A JO73
60m 
UTC    dB Audio  Message
024000 -14 1231  DL1UDO SN1A R-12
024015  +1 1399  SN1A DL1UDO RR73
024030 -14 1231  DL1UDO SN1A 73
024100 -12 1231  W1BS SN1A JO73
024130 -13 1231  9J2FI SN1A JO73 (x3)
024330 -19 1232  W1BS SN1A JO73 (x2)
024415 -18 1507  SN1A W1BS -17 (x2)
024500 -19 1631  W1BS SN1A R-20
024515 -16 1507  SN1A W1BS -17 (x2)
024600 -19 1631  W1BS SN1A RR73
10m 
UTC    dB Audio  Message
131115  -7 2152  SN1A DO9PV JO30

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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