SQ7RJZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO91

Receiver-side FT8 activity involving SQ7RJZ, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 40m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-16 and 2026-09-20.

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 34 FT8 messages attributed to SQ7RJZ as the transmitting token by decoded message structure across 2 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 -6 dB; no usual signal pattern is inferred.

Overview

34
Messages attributed
2
UTC dates decoded
5
Active 15-min windows
-6 dB
Estimated median S/N

Bands

40m · 34
First attributed message: 2026-09-16
Last attributed message: 2026-09-20 19:15 UTC

Observed FT8 message patterns

Attributed sample
34 messages
Active dates
2 UTC dates
Estimated median S/N
-6 dB
Estimated 10th-90th percentile
-21 to -3 dB
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 22.

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 SQ7RJZ in decoded directed-looking exchanges:

Most frequent locator attributed to SQ7RJZ

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
JO91 · 16 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
262 km (approx.)
Last such locator decoded
2026-09-20 19:15 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 UTCBandSQ7RJZ S/NCounterpartCounterpart S/NMsgsCapture
09-20 19:15 40m -2 / - G0WTZ - / - 2 Partial capture
09-20 19:12 40m -4 / -11 RU3DOK -9 / 0 4 ✓ Full exchange observed
09-16 14:50 40m -5 / -8 UR4UUY +1 / -3 6 ✓ Full exchange observed
09-16 14:48 40m -4 / - OE5YCP - / -18 4 ✓ Closing fragment
09-16 14:47 40m -8 / - IN3IZQ - / - 3 Partial capture
09-16 14:45 40m -4 / 0 SQ9SET -8 / +3 5 ✓ Full exchange observed
09-16 09:27 40m - / +10 IK4TVP -19 / - 4 Partial capture
09-16 09:24 40m -4 / -4 DJ0MAB -4 / +6 6 ✓ Full exchange observed
09-16 09:23 40m - / - SQ9LOJ -16 / - 4 Partial capture
09-16 09:22 40m -22 / -13 IZ2FOS -10 / +4 5 ✓ Full exchange observed
09-16 09:16 40m -22 / - ON3RV - / -12 4 Partial capture
09-16 09:14 40m -17 / - F4NKN - / - 2 Partial capture
09-13 23:16 40m - / -20 SV9QWC -6 / - 2 Partial capture
09-13 22:46 40m - / - EA1AOC -15 / - 8 Partial capture
09-13 22:39 40m - / -12 EX7CQ -6 / - 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
144900  -4 1022  OE5YCP SQ7RJZ R-18 (x3)
145045  -7  835  UR4UUY SQ7RJZ JO91 (x2)
145130  +0  835  SQ7RJZ UR4UUY -08
145145  -3  835  UR4UUY SQ7RJZ R-03
145200  +2  835  SQ7RJZ UR4UUY RR73
145215  -5  835  UR4UUY SQ7RJZ 73
191215  -6 1589  SQ7RJZ RU3DOK -11
191230  -3 1589  RU3DOK SQ7RJZ R+00
191245 -12 1588  SQ7RJZ RU3DOK RR73
191300  -4 1589  RU3DOK SQ7RJZ 73
191500  -3  990  G0WTZ SQ7RJZ JO91 (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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