SJ7SOP — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO76

Receiver-side FT8 activity involving SJ7SOP, decoded by SO8OO in southeastern Poland. 204 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-07-06 and 2026-07-24.

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 204 FT8 messages attributed to SJ7SOP as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (77%), followed by 40 m (15%) and 20 m (8%). Most decodes (92%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -5 dB.

Overview

204
Messages attributed
10
UTC dates decoded
27
Active 15-min windows
-5 dB
Estimated median S/N

Bands

80m · 158 40m · 30 20m · 16
First attributed message: 2026-07-06
Last attributed message: 2026-07-24 18:47 UTC

Observed FT8 message patterns

Attributed sample
204 messages
Active dates
10 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-14 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 52, strong (≥ -8 dB) 137.

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 SJ7SOP 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 SJ7SOP

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
JO76 · 94 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
858 km (approx.)
Last such locator decoded
2026-07-24 18:46 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 UTCBandSJ7SOP S/NCounterpartCounterpart S/NMsgsCapture
07-24 18:46 80m 0 / - HF5A +2 / -11 3 Partial capture
07-24 18:44 80m -8 / -19 RC6OU +6 / +7 5 ✓ Full exchange observed
07-24 18:43 80m -12 / -18 YO4NT +6 / 0 4 ✓ Full exchange observed
07-24 18:26 80m - / -20 UX7QV +15 / - 3 ✓ Closing fragment
07-24 18:15 40m - / -13 YO4NT -7 / - 2 ✓ Closing fragment
07-24 18:05 40m - / -8 DL1IP +1 / - 3 ✓ Closing fragment
07-23 18:32 40m -8 / -12 DM3RCK -11 / -2 4 ✓ Full exchange observed
07-23 18:32 40m -11 / -23 R3LC -2 / - 4 ✓ Closing observed
07-23 18:32 40m - / -14 YO4NT -6 / - 2 Partial capture
07-23 18:31 40m -11 / +1 SQ9PBV 0 / - 4 ✓ Closing observed
07-23 18:29 40m - / -17 R3LC -2 / - 2 Partial capture
07-23 18:28 40m -6 / - DM5KN - / -18 2 ✓ Closing fragment
07-23 18:27 40m -10 / - SP9EIA -19 / -5 3 ✓ Closing observed
07-23 18:24 40m -12 / - SP1ADT - / - 2 Partial capture
07-23 17:57 20m - / -18 IZ8VYU -20 / - 3 ✓ Closing fragment
07-21 19:52 80m +2 / -14 ES2AJ +10 / - 5 Partial capture
07-21 19:51 80m -4 / - SP5CTY +2 / +9 3 ✓ Closing observed
07-21 19:49 80m 0 / -4 RA2FU -21 / -3 5 ✓ Full exchange observed
07-21 19:45 80m +1 / -4 DL9PN -6 / - 3 ✓ Closing observed
07-21 19:43 80m +4 / +8 OZ4SOP +2 / - 5 ✓ Full exchange observed
07-21 19:43 80m +6 / -20 DK4RH -3 / -9 5 ✓ Full exchange observed
07-21 19:43 80m - / - LZ2INP +7 / - 4 Partial capture
07-21 19:41 80m +2 / +4 SM5FUG -6 / +10 6 ✓ Full exchange observed
07-21 19:40 80m 0 / -15 DO1MGN -4 / -21 4 ✓ Full exchange observed
07-21 19:38 80m -2 / - DF4LB +8 / -3 6 ✓ Closing observed
07-21 19:37 80m 0 / -6 R7CD +10 / +6 6 ✓ Full exchange observed
07-21 19:37 80m 0 / -3 DL1DQF +7 / +8 5 ✓ Full exchange observed
07-21 17:57 20m - / -3 F1PBZ 0 / - 2 ✓ Closing fragment
07-19 06:47 40m - / +9 SQ2PHC -13 / - 2 ✓ Closing fragment
07-19 06:33 40m - / +6 SN1A -18 / - 2 ✓ Closing fragment
07-18 18:33 80m - / - SP5DFK -5 / - 3 Partial capture
07-18 18:30 80m -13 / -5 DL6JOG -14 / - 3 ✓ Closing observed
07-17 19:21 80m -3 / -6 YL2TM +2 / -22 4 ✓ Full exchange observed
07-17 19:17 80m -2 / -9 DK3TNA -6 / -6 3 ✓ Full exchange observed
07-17 06:01 40m - / -19 YO4NT -19 / - 2 Partial capture
07-15 17:34 80m - / - SQ4PKO +10 / - 2 Partial capture
07-15 16:02 40m -17 / - SV2CXW - / -7 2 ✓ Closing fragment
07-15 15:58 40m -12 / - PG7R - / - 2 ✓ Closing fragment
07-15 06:45 40m - / -3 DL9KM -14 / - 2 Partial capture
07-14 06:36 40m - / -5 DH9DR -10 / - 2 ✓ Closing fragment
07-13 20:59 80m -4 / - DL3AS +4 / -4 4 ✓ Closing observed
07-13 20:58 80m -2 / -5 DO2RG -2 / -4 5 ✓ Full exchange observed
07-13 20:55 80m -4 / -12 IK6DLK +12 / -12 5 ✓ Full exchange observed
07-13 20:54 80m -3 / - DO1NJN -2 / -8 4 ✓ Closing observed
07-13 20:50 80m -3 / -6 SP5KG +12 / -2 5 ✓ Full exchange observed
07-13 20:46 80m 0 / -7 R2PT -8 / -13 5 ✓ Full exchange observed
07-13 20:46 80m +2 / -10 DH9DR +1 / -7 5 ✓ Full exchange observed
07-13 20:46 80m 0 / - SA5ASE -20 / -20 5 ✓ Closing observed
07-13 20:44 80m -1 / -10 OE2LEX -2 / -14 4 ✓ Full exchange observed
07-13 20:41 80m -5 / -12 DM8ET -19 / -18 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
184330 -13 2797  CQ SJ7SOP JO76
184345  +7 1508  SJ7SOP YO4NT -18
184400 -12 2797  YO4NT SJ7SOP R+00
184415  +5 1508  SJ7SOP YO4NT RR73
184415  +7 1552  SJ7SOP RC6OU KN98
184430 -13 2797  YO4NT SJ7SOP 73
184445  +7 1551  SJ7SOP RC6OU KN98
184500 -10 2797  RC6OU SJ7SOP +07
184515  +3 1552  SJ7SOP RC6OU R-19
184515 +18 2616  SJ7SOP DO9AO -18
184530  -5 2797  RC6OU SJ7SOP RR73
184600  -5 2797  CQ SJ7SOP JO76
184615  +2 2532  SJ7SOP HF5A JO92
184630  +1 2797  HF5A SJ7SOP -11 (x2)
40m 
UTC    dB Audio  Message
183230  -1 2833  SJ7SOP R3LC KO64
183230 -12 2442  SJ7SOP DM3RCK JO62
183300  -6  964  SJ7SOP YO4NT -14
183315 -11 2639  R3LC SJ7SOP RR73
183330  -6 2833  SJ7SOP R3LC R-23
183345  -8 2639  DM3RCK SJ7SOP -02
183400 -11 2581  SJ7SOP DM3RCK R-12 (x2)
183500  +1 2833  SJ7SOP R3LC 73
180530  -1 3009  SJ7SOP DL1IP JN49 (x3)
181115 -17 2063  SJ7SOP RA4Y LO35
181515  -8 1216  SJ7SOP YO4NT -13 (x2)
20m 
UTC    dB Audio  Message
115330 -11 1965  SJ7SOP R2AL KO85 (x3)
070315 -12 1709  SJ7SOP YU1EU -18 (x2)
070445 -13 2594  SJ7SOP OD5KU KM73 (x2)
082945 -14  280  SJ7SOP IU3GOR R-12
175730  +1 2826  SJ7SOP F1PBZ -03 (x2)
175930 +14 2978  SJ7SOP OE6TNO JN77
175730 -20 2056  SJ7SOP IZ8VYU JN71 (x3)
175930 -17  942  SJ7SOP RU3QR RR73

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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