SA7SVR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO77

Receiver-side FT8 activity involving SA7SVR, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-28.

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 25 FT8 messages attributed to SA7SVR as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

25
Messages attributed
1
UTC dates decoded
7
Active 15-min windows
-16 dB
Estimated median S/N

Bands

40m · 25
First attributed message: 2026-08-28
Last attributed message: 2026-08-28 22:08 UTC

Observed FT8 message patterns

Attributed sample
25 messages
Active dates
1 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-20 to -12 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SA7SVR in decoded directed-looking exchanges:

Most frequent locator attributed to SA7SVR

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
JO77 · 13 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
951 km (approx.)
Last such locator decoded
2026-08-28 21:09 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 UTCBandSA7SVR S/NCounterpartCounterpart S/NMsgsCapture
09-01 09:30 40m - / -25 US1MM -6 / - 12 Partial capture
09-01 09:16 40m - / - UT4PA -1 / - 8 Partial capture
08-29 21:42 40m - / -13 EA3EDU -7 / - 4 ✓ Closing fragment
08-29 21:22 40m - / - S53F -1 / - 5 ✓ Closing fragment
08-29 21:08 40m - / -8 F1FCA +9 / - 3 ✓ Closing fragment
08-29 21:03 40m - / -15 M7WSY -11 / - 3 Partial capture
08-29 20:39 40m - / -8 M0VCP -7 / - 3 ✓ Closing fragment
08-29 20:29 40m - / -4 DK1GP +4 / - 3 ✓ Closing fragment
08-29 20:16 40m - / -22 M0EBM -16 / - 3 ✓ Closing fragment
08-28 22:07 40m -14 / - DL9KM - / -17 2 Partial capture
08-28 22:05 40m - / -7 G0ORC -6 / - 3 Partial capture
08-28 21:58 40m - / -16 G0ORC -4 / - 4 Partial capture
08-28 21:41 40m - / -7 DL9KM +3 / - 9 Partial capture
08-28 21:37 40m - / -12 EA3RR +2 / - 10 ✓ Closing fragment
08-28 21:31 40m - / -19 ON5RZ -5 / - 5 ✓ Closing fragment
08-28 21:24 40m - / -3 G0OXO -16 / - 2 ✓ Closing fragment
08-28 21:17 40m - / -15 R4CES -4 / - 4 Partial capture
08-28 21:02 40m - / -21 M0PKE -9 / - 3 ✓ Closing fragment
08-28 20:57 40m - / -21 DF5JU -2 / - 4 ✓ Closing fragment
08-28 20:45 40m - / - HF5A -2 / - 2 Partial capture
08-28 20:40 40m - / +1 DL1EDR +7 / - 3 ✓ Closing fragment
08-28 20:33 40m -17 / -20 DC5BO -2 / -8 4 ✓ Full exchange observed
08-28 20:27 40m - / - EA3EDU -8 / - 5 Partial capture
08-28 20:26 40m -18 / - DC5BO -4 / -8 6 Partial capture
08-28 20:17 40m -19 / -14 EA3FA -8 / -14 5 ✓ Full exchange observed
08-28 20:15 40m -18 / -15 ON3MOH -9 / -9 5 ✓ Full exchange observed
08-28 20:13 40m - / -10 GJ0KYZ 0 / - 2 ✓ Closing fragment
08-28 20:11 40m - / -14 UB3XCC -6 / - 2 ✓ Closing fragment
08-28 20:05 40m - / - UB3XCC -8 / - 4 Partial capture
08-28 20:00 40m - / -2 DG4BZ -6 / - 3 ✓ Closing fragment
08-28 19:58 40m - / -17 OE1AVO 0 / - 2 Partial capture
08-28 19:52 40m - / -22 YO9ADN +2 / - 3 Partial capture
08-28 19:49 40m - / - YO9ADN -8 / - 2 Partial capture
08-28 19:46 40m - / -10 PA1PXL 0 / - 2 Partial capture
08-28 19:42 40m -18 / +1 OH1LA -10 / -13 5 ✓ Full exchange observed
08-10 20:40 40m - / - DL1IP -9 / - 5 Partial capture
08-09 19:21 40m - / - DL3JHK -8 / - 2 Partial capture
07-20 12:28 20m - / - IU5TPM -8 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
091900  -2 1732  SA7SVR UT4PA KO20 (x3)
093000  -3 1732  SA7SVR US1MM KO30 (x12)
80m 
UTC    dB Audio  Message
211500 -24  400  SA7SVR ON3FM -18
20m 
UTC    dB Audio  Message
122815  -8  643  SA7SVR IU5TPM JN53 (x2)
200915 -12 1301  SA7SVR YU1NTP RR73

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