SV1TPO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Greece Most frequent locator attributed to this token: KM18

Receiver-side FT8 activity involving SV1TPO, decoded by SO8OO in southeastern Poland. 198 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-08-25.

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 198 FT8 messages attributed to SV1TPO as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (54%), followed by 40 m (25%) and 80 m (16%). Most decodes (80%) 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 -11 dB.

Overview

198
Messages attributed
13
UTC dates decoded
31
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 31 40m · 50 20m · 106 10m · 11
First attributed message: 2026-07-07
Last attributed message: 2026-08-25 18:46 UTC

Observed FT8 message patterns

Attributed sample
198 messages
Active dates
13 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-19 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 50, moderate (-15 to -9 dB) 91, strong (≥ -8 dB) 57.

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 SV1TPO 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 SV1TPO

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
KM18 · 96 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,275 km (approx.)
Last such locator decoded
2026-08-24 18:01 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 UTCBandSV1TPO S/NCounterpartCounterpart S/NMsgsCapture
08-25 18:47 40m - / -13 RA3RDN -5 / - 3 ✓ Closing fragment
08-25 18:46 40m -21 / -6 IV3FSG +8 / -25 3 ✓ Full exchange observed
08-25 18:43 40m - / - PI4TX -11 / - 4 Partial capture
08-25 18:43 40m - / - SP6EFY +5 / - 2 Partial capture
08-25 18:37 40m - / -2 SV2HTW -2 / - 2 ✓ Closing fragment
08-24 18:03 20m - / - PD0PWH -1 / - 2 Partial capture
08-24 18:03 20m -3 / +1 M7TUP 0 / -12 3 Partial capture
08-24 18:00 20m -7 / - EA8CVR - / - 2 Partial capture
08-24 17:45 20m - / - M0KSD +4 / - 6 Partial capture
08-24 17:37 20m - / -14 RX3DRC -2 / - 3 ✓ Closing fragment
07-29 15:00 20m -8 / - ON4JPV - / -13 4 Partial capture
07-25 15:34 20m - / -17 RL3K -16 / - 3 ✓ Closing fragment
07-25 15:32 20m - / +1 RA6OY +4 / - 3 ✓ Closing fragment
07-23 18:52 10m -18 / - IU5VMV - / - 3 ✓ Closing fragment
07-23 18:42 10m -22 / - DO1JMA - / -12 2 Partial capture
07-23 18:41 10m -17 / - CX2CRV - / - 2 Partial capture
07-23 18:40 10m -20 / - DO7BW - / -10 2 Partial capture
07-23 17:53 20m +5 / - DF6NL - / -15 3 ✓ Closing fragment
07-23 17:51 20m +4 / - EA5FQ - / - 2 Partial capture
07-23 17:50 20m +2 / - RL3F - / - 2 Partial capture
07-23 17:47 20m -2 / - BG0HP - / -22 5 ✓ Closing fragment
07-23 17:46 20m -8 / - R4FDW - / -22 2 Partial capture
07-23 17:44 20m -8 / - UR4QWW - / -5 2 ✓ Closing fragment
07-23 17:43 20m -8 / - OZ2LP - / -5 2 ✓ Closing fragment
07-23 17:40 20m -10 / - EW6EW - / - 2 Partial capture
07-23 17:36 20m - / 0 RL2F -18 / - 2 ✓ Closing fragment
07-23 17:31 20m - / -5 ES2AJ -2 / - 5 ✓ Closing fragment
07-23 17:28 40m - / - SP9KM -16 / - 4 Partial capture
07-21 03:44 40m - / -9 R2EA -2 / - 2 ✓ Closing fragment
07-21 03:42 40m -10 / - S58MU -15 / - 2 ✓ Closing observed
07-21 03:41 40m - / -4 DK5ON -18 / - 7 Partial capture
07-21 03:39 40m -11 / -6 PC2J -10 / -18 9 Partial capture
07-21 03:37 40m -12 / -6 UY0HY -9 / -11 5 ✓ Full exchange observed
07-21 03:34 40m -18 / - KZ7Y - / - 2 Partial capture
07-21 03:27 40m -16 / -6 UY0HY -9 / -15 4 ✓ Full exchange observed
07-19 19:07 20m - / - DL9KM -7 / - 5 Partial capture
07-18 03:50 40m - / +10 YO3OBB -18 / - 2 ✓ Closing fragment
07-18 03:49 40m - / -6 OE6JVE -22 / - 3 Partial capture
07-18 03:44 40m -18 / - F4IIX - / -13 2 Partial capture
07-17 19:47 40m - / +10 OE5ROR -10 / - 10 ✓ Closing fragment
07-17 19:36 40m - / -5 IQ4JO -4 / - 3 ✓ Closing fragment
07-17 19:29 40m -24 / +7 LZ2KAA +1 / -22 3 Partial capture
07-17 03:52 40m - / - PC2J -1 / - 2 Partial capture
07-17 03:37 40m - / -8 ON5ZZ -6 / - 2 ✓ Closing fragment
07-17 03:28 40m - / - PE1NPS -12 / - 4 ✓ Closing fragment
07-17 03:28 40m - / -7 HI8R -14 / - 3 ✓ Closing fragment
07-17 03:27 40m - / -12 PD1BER -12 / - 5 Partial capture
07-17 03:21 40m - / -12 PD1BER -16 / - 5 Partial capture
07-17 03:20 40m -12 / -3 IU5AWQ -14 / - 7 ✓ Full exchange observed
07-16 20:02 80m - / -15 JA5MHD -17 / - 4 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
172945 -16 1687  SV1TPO SP9KM JN99
183715  -8  591  SV1TPO SV2HTW -02 (x2)
184300  +9 1092  SV1TPO SP6EFY JO72
184300 -10 2040  SV1TPO PI4TX JO22
184330  +1 1092  SV1TPO SP6EFY JO72
184330 -15 2039  SV1TPO PI4TX JO22 (x3)
184600  +6  384  SV1TPO IV3FSG -06
184615 -21  908  IV3FSG SV1TPO R-25
184630  +9  384  SV1TPO IV3FSG RR73
184730  -5 2130  SV1TPO RA3RDN LO02 (x3)
20m 
UTC    dB Audio  Message
173845  -3  931  SV1TPO RX3DRC RR73
174130 -11  836  EC3A SV1TPO KM18
174545  +4  860  SV1TPO M0KSD IO91 (x6)
180045  -4  861  EA8CVR SV1TPO KM18 (x2)
180300  -5 2053  SV1TPO M7TUP IO90
180330  -2 1156  SV1TPO PD0PWH JO21
180345  -3 1156  M7TUP SV1TPO -12
180400  +0 1156  SV1TPO PD0PWH JO21
180400  +4 2053  SV1TPO M7TUP R+01
10m 
UTC    dB Audio  Message
184000 -19 1532  DO7BW SV1TPO R-10 (x2)
184115 -16 1491  CX2CRV SV1TPO KM18 (x2)
184215 -22 1490  DO1JMA SV1TPO KM18 (x2)
184945 -21 1275  IU5VMV SV1TPO 73 (x4)
185715 -15 1129  CQ SV1TPO KM18
80m 
UTC    dB Audio  Message
195400  -1 2297  SV1TPO IZ0RPS R-11
195400  +1 1470  SV1TPO DK7ZT -21
195415 -12 2298  IZ0RPS SV1TPO RR73
195430  -8 2297  SV1TPO IZ0RPS 73
195430  -8 1470  SV1TPO DK7ZT -21
195445 -10 2298  DK7ZT SV1TPO R-14 (x3)
195615 -18 2297  RA3M SV1TPO KM18
200230 -16  290  SV1TPO JA5MHD -15 (x3)
200415 -19 1381  SV1TPO OH2DOF KP20
200430 -19  295  SV1TPO JA5MHD RR73
200515  -7  782  CQ SV1TPO KM18

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee