OJ0JR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Market Reef Most frequent locator attributed to this token: JP90

Receiver-side FT8 activity involving OJ0JR, decoded by SO8OO in southeastern Poland. 850 FT8 messages attributed to this token as transmitter, on 60m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-19 and 2026-08-21.

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 850 FT8 messages attributed to OJ0JR as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (67%), followed by 40 m (33%). Most decodes (69%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (90%); the estimated median was +0.9 dB.

Overview

850
Messages attributed
3
UTC dates decoded
55
Active 15-min windows
+0.9 dB
Estimated median S/N

Bands

60m · 571 40m · 279
First attributed message: 2026-08-19
Last attributed message: 2026-08-21 07:46 UTC

Observed FT8 message patterns

Attributed sample
850 messages
Active dates
3 UTC dates
Estimated median S/N
+0.9 dB
Estimated 10th-90th percentile
-8.9 to +8.9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 87, strong (≥ -8 dB) 762.

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 OJ0JR 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 OJ0JR

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
JP90 · 154 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,187 km (approx.)
Last such locator decoded
2026-08-21 07:29 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 UTCBandOJ0JR S/NCounterpartCounterpart S/NMsgsCapture
08-21 08:13 40m - / - DK9FE -2 / - 4 Partial capture
08-21 08:09 40m - / +4 LY3BES -5 / - 3 Partial capture
08-21 08:08 40m - / - DK9FE -4 / - 4 Partial capture
08-21 08:00 40m - / -14 OH4TQ -6 / - 3 Partial capture
08-21 07:58 40m - / -15 DL2ZM -7 / - 4 ✓ Closing fragment
08-21 07:57 40m - / -7 SP8LSM +2 / - 4 ✓ Closing fragment
08-21 07:48 40m - / - DL9KM -12 / - 7 Partial capture
08-21 07:48 40m - / - SQ6MIZ -4 / - 2 Partial capture
08-21 07:44 40m - / 0 SP7SQM +7 / - 5 ✓ Closing fragment
08-21 07:41 40m - / -22 I4JLF -11 / - 4 Partial capture
08-21 07:40 40m - / -10 DL6ZNG -14 / - 3 Partial capture
08-21 07:36 40m - / - 9A4ZM -1 / - 3 Partial capture
08-21 07:35 40m - / - I4JLF -22 / - 2 Partial capture
08-21 07:34 40m - / -12 SQ7HJX +2 / - 3 ✓ Closing fragment
08-21 07:32 40m - / -2 DL1SUZ -6 / - 3 ✓ Closing fragment
08-21 07:21 40m - / - HB9ALO -16 / - 6 Partial capture
08-21 07:20 40m - / - DF5AU -5 / - 2 Partial capture
08-21 07:16 40m - / -3 DH9DR -8 / - 2 Partial capture
08-21 07:16 40m - / +3 DL5XL -13 / - 4 Partial capture
08-21 07:15 40m - / - OH5CZ -16 / - 3 Partial capture
08-21 07:11 40m - / - SP1ZMO -4 / - 2 Partial capture
08-21 07:10 40m -11 / -16 SQ8AA +2 / -16 4 ✓ Full exchange observed
08-21 07:08 40m - / -15 DJ0WJ -7 / - 3 Partial capture
08-21 07:05 40m -10 / - F1UFX - / -9 2 Partial capture
08-21 06:59 40m -10 / - RU4SS - / -18 2 Partial capture
08-21 06:55 40m -12 / +3 DK1AJ -3 / -1 4 ✓ Full exchange observed
08-21 06:54 40m - / - 9A4ZM +3 / - 3 Partial capture
08-21 06:52 40m - / - IU2KNG -11 / - 2 Partial capture
08-21 06:52 40m - / - HB9ALO -18 / - 6 Partial capture
08-21 06:47 40m - / - HB9ALO -16 / - 2 Partial capture
08-21 06:43 40m - / -5 R5DT -10 / - 2 Partial capture
08-21 06:42 40m - / -11 DL8DCM -7 / - 4 Partial capture
08-21 06:41 40m - / -16 SP6AMI +13 / - 3 ✓ Closing fragment
08-21 06:38 40m - / -24 F4LVF -7 / - 5 Partial capture
08-21 06:38 40m -10 / - PD2AM - / -18 2 Partial capture
08-21 06:37 40m - / -2 HA7EG +12 / - 7 ✓ Closing fragment
08-21 06:36 40m - / - SP1ZMO -5 / - 4 Partial capture
08-21 06:36 40m - / -13 SP8MO -1 / - 2 Partial capture
08-21 06:31 40m - / -4 DL1VVQ 0 / - 2 ✓ Closing fragment
08-21 06:25 40m - / -14 9A2DM -8 / - 4 ✓ Closing fragment
08-21 06:23 40m - / -8 SP7BRK +5 / - 3 ✓ Closing fragment
08-21 06:22 40m - / +4 SP3BPU +14 / - 2 Partial capture
08-21 06:21 40m - / -1 OK1WE +6 / - 3 Partial capture
08-21 06:18 40m - / -12 ON4AOI +4 / - 2 ✓ Closing fragment
08-21 06:14 40m - / -12 HB9BQP +2 / - 2 Partial capture
08-21 06:12 40m -12 / -17 UZ5CA +12 / -1 3 ✓ Full exchange observed
08-21 06:06 40m - / -14 DL1NCH -8 / - 2 Partial capture
08-21 06:06 40m - / -25 SM7HZK -12 / - 2 Partial capture
08-21 06:02 40m - / -1 OH2CI -19 / - 3 Partial capture
08-21 06:01 40m - / -5 DL1HQN +2 / - 7 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
080115  -4  325  OJ0JR OH4TQ -14 (x2)
080545 -21 1392  OJ0JR ON2KMJ -17
080815  -6  456  OJ0JR DK9FE JO40 (x2)
080915 -14 1074  OJ0JR PD1GE JO22
080915  -6  457  OJ0JR DK9FE JO40
080945  -8  522  OJ0JR LY3BES +04
080945  -1  457  OJ0JR DK9FE JO40
081015  -7  521  OJ0JR LY3BES +04 (x2)
081345  -4  456  OJ0JR DK9FE JO40 (x4)
20m 
UTC    dB Audio  Message
035315 +13  954  OJ0JR RW6PA -05 (x3)
035445  -8  432  OJ0JR YO4NF -08 (x2)
030245  +5 2518  OJ0JR R6OK KN87 (x3)
030445  -4  441  OJ0JR EX8ABC 73
030515  -6 2518  OJ0JR R6OK KN87
030845  -6 2029  OJ0JR RA6MQ -14 (x3)
031245  +0 2515  OJ0JR R6OK KN87 (x2)
80m 
UTC    dB Audio  Message
212245  +2  766  OJ0JR SM6LRY JO66 (x5)
60m 
UTC    dB Audio  Message
203830  +7  378  LX1JH OJ0JR RR73
203900 +10  378  MW0HMV OJ0JR RR73
203930  +8  378  CQ OJ0JR JP90
204000  +7  378  EA4CPM OJ0JR -20 (x2)
204100 +10  378  CQ OJ0JR JP90
204130  +9  378  TA4RC OJ0JR -11
204145 -18 1706  OJ0JR TA4RC R-08
204200  +8  378  TA4RC OJ0JR RR73
204230  +8  378  CQ OJ0JR JP90
204315 -20 1534  OJ0JR EA5GO IM99
204945 -15  723  OJ0JR 4X1GA KM72 (x4)
10m 
UTC    dB Audio  Message
172045 -23 1745  OJ0JR IS0AWZ R-14
172215 +10  531  OJ0JR IW2MYH JN45 (x4)
173845 -15 1015  OJ0JR IS0AWZ JM49 (x2)
174615 -16 1329  OJ0JR IU1RZX JN44 (x2)
174645 -14  789  OJ0JR IS0AWZ JM49
174715 -17 1329  OJ0JR IU1RZX JN44 (x2)
175615  -5  372  OJ0JR RZ3DJ 73 (x3)

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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