SV4TQR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Greece Most frequent locator attributed to this token: KM19

Receiver-side FT8 activity involving SV4TQR, decoded by SO8OO in southeastern Poland. 86 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-09-18.

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 86 FT8 messages attributed to SV4TQR as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 80 m (35%) and 10 m (6%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

86
Messages attributed
18
UTC dates decoded
32
Active 15-min windows
-13 dB
Estimated median S/N

Bands

80m · 30 60m · 1 40m · 48 20m · 2 10m · 5
First attributed message: 2026-06-12
Last attributed message: 2026-09-18 05:46 UTC

Observed FT8 message patterns

Attributed sample
86 messages
Active dates
18 UTC dates
Estimated median S/N
-13 dB
Estimated 10th-90th percentile
-20 to -7 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 44, strong (≥ -8 dB) 17.

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 SV4TQR 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 SV4TQR

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
KM19 · 37 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,164 km (approx.)
Last such locator decoded
2026-09-18 05:46 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 UTCBandSV4TQR S/NCounterpartCounterpart S/NMsgsCapture
09-16 18:25 80m -24 / -20 EH3ST -4 / -2 2 Partial capture
09-16 18:24 80m - / - RG5A +8 / - 4 Partial capture
09-16 18:24 80m - / - SP9DWT +21 / - 2 Partial capture
09-12 01:55 40m -21 / +7 EH3ST -22 / - 4 ✓ Closing observed
09-12 01:49 40m -23 / +6 EH3ST -20 / - 3 Partial capture
09-12 01:30 80m -7 / - II0CDS -21 / -6 4 ✓ Closing observed
09-12 01:16 80m - / - EA3HMM -6 / - 4 Partial capture
09-04 02:49 40m -4 / 0 EG42SDC -8 / - 3 Partial capture
09-03 15:20 40m -19 / +6 IK2BUF -20 / - 2 ✓ Closing observed
09-03 04:18 40m -14 / - IT9ECY - / -22 3 ✓ Closing fragment
09-02 02:24 40m - / - F8MRQ +4 / - 3 Partial capture
08-23 22:09 40m - / -8 EN35UKR +7 / - 3 Partial capture
08-23 11:42 20m - / -9 EN35UKR -5 / - 5 Partial capture
08-22 21:12 80m - / - UA4FKT +2 / - 4 Partial capture
08-22 21:11 80m - / -16 EN35UKR -12 / - 2 ✓ Closing fragment
08-21 18:55 80m -14 / -12 II7MGBA +7 / +5 5 Partial capture
08-21 18:49 80m -20 / -8 II7MGXX -21 / - 2 Partial capture
08-20 04:06 40m -14 / - IK2UCL -13 / - 4 ✓ Closing observed
08-19 04:02 40m -16 / - <...> - / - 5 Partial capture
08-19 04:02 40m - / -7 EN35UKR -4 / - 3 Partial capture
08-18 21:15 80m - / -14 EN35UKR +4 / - 4 Partial capture
08-17 20:18 80m -14 / -20 EN35UKR -12 / -17 5 Partial capture
08-09 21:05 80m - / - UA4FKT +9 / - 3 Partial capture
08-09 21:03 80m -8 / - SV4OZF - / 0 3 Partial capture
08-09 20:58 80m -5 / - <...> - / 0 4 Partial capture
08-09 20:32 40m - / -15 LY5J -10 / - 2 Partial capture
07-20 21:34 40m -17 / - IQ8BV - / +9 7 ✓ Closing fragment
07-20 20:47 80m - / - PA3FPQ +3 / - 3 Partial capture
07-20 20:47 80m - / - UA4FKT +7 / - 3 Partial capture
07-20 20:46 80m -7 / 0 IQ8BV -18 / -1 3 ✓ Full exchange observed
07-18 18:32 40m -10 / - T22TT - / - 6 Partial capture
07-18 18:28 40m -15 / - T22TT - / - 4 Partial capture
07-13 20:30 40m -14 / - SQ5OMY - / -20 2 ✓ Closing fragment
07-13 19:18 40m -10 / - SQ9MEZ - / +6 2 ✓ Closing fragment
07-13 18:46 40m -12 / -9 SP5ROM -14 / - 3 ✓ Closing observed
07-07 20:32 40m -14 / -3 SQ8AZT -12 / -6 4 ✓ Full exchange observed
07-07 19:44 80m - / - UA4FKT +6 / - 3 Partial capture
07-07 19:42 80m -10 / -14 SQ8AZT +13 / -14 8 ✓ Full exchange observed
06-23 19:23 20m - / -6 I1FLC -12 / - 2 Partial capture
06-23 19:22 20m -11 / -9 EH1HSJ -14 / -11 4 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
041945 -15 2104  IT9ECY SV4TQR 73
152000 -20 1875  SV4TQR IK2BUF +06
152045 -19 1875  IK2BUF SV4TQR 73
152930 -15 1204  IK2GAU SV4TQR KM19
024915  -6 1770  EG42SDC SV4TQR KM19
024930  -8 1770  SV4TQR EG42SDC +00
024945  -1 1770  EG42SDC SV4TQR R+12
014915 -23 1533  EH3ST SV4TQR KM19
014930 -24 1529  SV4TQR EH3ST +06 (x2)
015545 -21 1530  EH3ST SV4TQR KM19
015600 -21 1530  SV4TQR EH3ST +07 (x3)
054615 -12  728  IQ0AAI SV4TQR KM19
80m 
UTC    dB Audio  Message
011630  -7  310  SV4TQR EA3HMM JN00 (x3)
013045  -8  926  II0CDS SV4TQR KM19 (x2)
013130 -21  925  SV4TQR II0CDS RR73
013145  -6  926  II0CDS SV4TQR 73
182400 +21 2632  SV4TQR SP9DWT JN99 (x2)
182430  +9 1425  SV4TQR RG5A KN93 (x2)
182500  -4 1618  SV4TQR EH3ST -20
182515 -24 1618  EH3ST SV4TQR R-02
182530  +8 1425  SV4TQR RG5A KN93 (x2)
20m 
UTC    dB Audio  Message
192245 -11 2093  EH1HSJ SV4TQR KM19
192300 -14 2174  SV4TQR I1FLC -06
192300 -16 1998  SV4TQR EH1HSJ -09
192315 -11 2093  EH1HSJ SV4TQR R-11
192330  -9 2174  SV4TQR I1FLC -06
192330 -13 1998  SV4TQR EH1HSJ RR73
122900  -1  848  SV4TQR EN35UKR R-14 (x6)
60m 
UTC    dB Audio  Message
193045 -11 2561  <...> SV4TQR KM19
10m 
UTC    dB Audio  Message
121030 -24 1579  <...> SV4TQR R-05
121230 -20 2164  OE3UKW SV4TQR 73
122145 -21 2164  <...> SV4TQR -14
122715 -20 2163  EN35UKR SV4TQR -12 (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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