CR7BRV — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving CR7BRV, decoded by SO8OO in southeastern Poland. 24,429 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 109 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-04.
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 24,429 FT8 messages attributed to CR7BRV as the transmitting token by decoded message structure across 109 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (44%), followed by 40 m (40%) and 10 m (11%). Most decodes (51%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-10-04 16:00 UTC
Observed FT8 message patterns
- Attributed sample
- 24,429 messages
- Active dates
- 109 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -13 to +2 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 701, moderate (-15 to -9 dB) 7,805, strong (≥ -8 dB) 15,923.
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 CR7BRV 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 CR7BRV
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
- IM58 · 16,997 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,737 km (approx.)
- Last such locator decoded
- 2026-10-04 15:59 UTC
Other locator fields attributed to this token: IM59 (51).
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 UTC | Band | CR7BRV S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-05 20:58 | 160m | - / - | CT2GQA | -8 / - | 2 | ✓ Closing fragment |
| 10-04 15:57 | 10m | -12 / - | F4IZN | - / -14 | 2 | ✓ Closing fragment |
| 10-04 15:54 | 10m | -2 / - | YO3FBD | - / -3 | 3 | ✓ Closing fragment |
| 10-04 15:49 | 10m | +4 / - | KE2N | - / -4 | 2 | ✓ Closing fragment |
| 10-04 15:44 | 10m | -1 / - | OE6DMD | - / -15 | 2 | ✓ Closing fragment |
| 10-04 15:37 | 10m | 0 / - | DL2VAH | - / -13 | 5 | ✓ Closing fragment |
| 10-04 15:35 | 10m | +2 / - | W2SZ | - / -10 | 2 | ✓ Closing fragment |
| 10-04 15:34 | 10m | +3 / - | UR5DU | - / -17 | 3 | ✓ Closing fragment |
| 10-04 15:32 | 10m | -3 / - | SP2BWI | - / -7 | 2 | ✓ Closing fragment |
| 10-04 15:31 | 10m | +2 / - | SP5HHP | - / -5 | 2 | ✓ Closing fragment |
| 10-04 15:27 | 10m | 0 / - | HB9EFK | - / -18 | 3 | ✓ Closing fragment |
| 10-04 15:22 | 10m | +1 / - | K5RCR | - / -16 | 2 | ✓ Closing fragment |
| 10-04 15:19 | 10m | -2 / - | EA3BBA | - / -7 | 2 | ✓ Closing fragment |
| 10-04 15:17 | 10m | -3 / - | Z34BET | - / -11 | 3 | ✓ Closing fragment |
| 10-04 14:54 | 10m | -6 / - | CT1AOZ | - / - | 3 | Partial capture |
| 10-04 14:49 | 10m | -1 / - | YE1BPQ | - / -13 | 2 | ✓ Closing fragment |
| 10-04 14:41 | 10m | +4 / - | CT1APN | -15 / -11 | 6 | ✓ Closing observed |
| 10-04 14:39 | 10m | - / - | EA7CJK | -4 / - | 2 | Partial capture |
| 10-04 14:36 | 10m | +4 / - | S56P | - / 0 | 3 | ✓ Closing fragment |
| 10-04 14:33 | 10m | +2 / - | OG1C | - / -10 | 4 | ✓ Closing fragment |
| 10-04 14:32 | 10m | +5 / - | US5LO | - / - | 2 | Partial capture |
| 10-04 14:31 | 10m | +4 / - | N1ERA | - / -20 | 2 | ✓ Closing fragment |
| 10-04 14:27 | 10m | +3 / - | LY2CK | - / -8 | 2 | ✓ Closing fragment |
| 10-04 14:24 | 10m | +5 / - | YB1BZV | - / -10 | 3 | ✓ Closing fragment |
| 10-04 14:22 | 10m | +3 / - | YD6HMM | - / -19 | 3 | ✓ Closing fragment |
| 10-04 14:17 | 10m | -4 / - | IK7TOE | - / -12 | 2 | ✓ Closing fragment |
| 10-04 14:14 | 10m | -12 / - | KK2M | - / -17 | 2 | ✓ Closing fragment |
| 10-04 14:11 | 10m | -9 / - | IU7IHG | - / -7 | 2 | ✓ Closing fragment |
| 10-04 14:07 | 10m | 0 / - | 9H4W | - / -2 | 5 | ✓ Closing fragment |
| 10-04 14:04 | 10m | -9 / - | YG2CLC | - / - | 3 | Partial capture |
| 10-04 13:57 | 10m | -12 / - | DN9ESA | - / -18 | 2 | ✓ Closing fragment |
| 10-04 13:56 | 10m | -9 / - | SP2GR | - / -2 | 2 | ✓ Closing fragment |
| 10-04 13:53 | 10m | +2 / - | DN9LM | - / -2 | 2 | ✓ Closing fragment |
| 10-04 13:50 | 10m | +2 / - | G0JEI | - / -17 | 5 | ✓ Closing fragment |
| 10-04 13:47 | 10m | +5 / - | DO2RW | - / 0 | 3 | ✓ Closing fragment |
| 10-04 13:45 | 10m | -3 / - | DO8SD | - / +3 | 2 | ✓ Closing fragment |
| 10-04 13:42 | 10m | +3 / - | TA9EN | - / -15 | 5 | ✓ Closing fragment |
| 10-04 13:40 | 10m | +4 / - | OZ5VO | - / -1 | 3 | ✓ Closing fragment |
| 10-04 13:37 | 10m | +4 / - | OZ1BGQ | - / -2 | 2 | ✓ Closing fragment |
| 10-04 13:34 | 10m | +10 / - | CT3KN | -14 / -13 | 5 | ✓ Closing observed |
| 10-04 13:31 | 10m | +11 / - | R1FD | - / -5 | 7 | ✓ Closing fragment |
| 10-04 13:26 | 10m | +6 / - | ES2SF | - / -7 | 2 | ✓ Closing fragment |
| 10-04 13:24 | 10m | +8 / - | OK2VSU | - / +1 | 2 | ✓ Closing fragment |
| 10-04 11:36 | 10m | +2 / - | SP7TF | - / -14 | 2 | ✓ Closing fragment |
| 10-04 11:30 | 10m | +7 / - | SP6TT | - / -17 | 2 | ✓ Closing fragment |
| 10-04 11:23 | 10m | +5 / - | 3B8HE | - / - | 5 | Partial capture |
| 10-04 11:20 | 10m | +11 / - | SP3PAT | - / +1 | 2 | ✓ Closing fragment |
| 10-04 11:18 | 10m | +6 / - | HA7UL | - / +1 | 2 | ✓ Closing fragment |
| 10-03 18:03 | 10m | -13 / - | 5A1AL | - / - | 3 | ✓ Closing fragment |
| 10-03 17:56 | 10m | -9 / - | OK2UZL | - / -11 | 6 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 210045 -3 393 CR7BRV F4GGS IN78 210115 -23 1659 CR7BRV ON7VOX JO10 210115 -1 393 CR7BRV F4GGS IN78 (x3) 231745 -23 2148 RI1FJL CR7BRV IM58 (x2) 211415 -17 744 OM4AIM CR7BRV IM58 194900 -12 2487 CR7BRV OH0Z -22 (x2) 195230 +3 1498 CR7BRV DL1CC JO72 (x2) 195530 -6 2563 CR7BRV OZ2LIN JO46 205845 -4 777 CR7BRV CT2GQA R+12 (x2)
UTC dB Audio Message 155230 +2 1005 CQ CR7BRV IM58 (x3) 155400 -1 1005 YO3FBD CR7BRV -03 (x3) 155530 +0 1005 CQ CR7BRV IM58 (x4) 155730 -10 929 F4IZN CR7BRV -14 (x2) 155830 -10 929 CQ CR7BRV IM58 (x2) 160000 -15 929 EA5RT CR7BRV 73
UTC dB Audio Message 052845 -17 1056 LA6AFA CR7BRV RR73 052900 -8 991 CR7BRV LA6AFA 73 054600 -18 1604 CR7BRV DK3MM R-14 060200 -6 678 CR7BRV SP2SGZ JO94 (x2) 060230 -11 2115 CR7BRV EA6Y JM19 060300 -8 678 CR7BRV SP2SGZ R-08 060300 +7 2115 CR7BRV EA6Y -02 060330 -12 678 CR7BRV SP2SGZ RR73 060330 +4 2115 CR7BRV EA6Y -02 (x3) 060800 +2 1066 CR7BRV DF3MC JN57 (x3)
UTC dB Audio Message 185130 -5 1014 ES2HV CR7BRV -12 (x4) 185315 -7 1811 CR7BRV ES2HV R-09 230415 -4 1006 9J2FI CR7BRV IM58 (x3) 230630 -20 1832 CR7BRV LB5SH JP53 051115 -13 938 HI3RRR CR7BRV R-16 051300 -13 937 XE2SSB CR7BRV IM58 051630 -14 938 IZ2ACM CR7BRV -13 (x2) 051715 -3 1118 CR7BRV IZ2ACM 73 052015 -16 950 CR7BRV S57MPU JN76
UTC dB Audio Message 233300 -8 528 SV9QWC CR7BRV R-13 212600 +7 2377 CR7BRV 4O7CC -02 (x2) 212700 +4 2379 CR7BRV RR73; F4VWK <...> -10 212715 -3 522 CQ CR7BRV IM58 212730 +5 522 CR7BRV IU3ACL JN65 212745 -4 522 F5HNQ CR7BRV -07 212800 +6 522 CR7BRV IU3ACL JN65 212815 -7 522 F5HNQ CR7BRV RR73 212830 +5 522 CR7BRV IU3ACL JN65 212845 -6 522 RA0SCA CR7BRV IM58 (x4) 000000 -5 2367 CR7BRV RW1AI KO59
UTC dB Audio Message 210715 +11 2202 LZ2EW CR7BRV -15 210745 +10 2202 JA4DLF CR7BRV IM58 (x4) 210945 +12 2203 JA8NZB CR7BRV IM58 (x2) 211115 +6 2203 JA4DLF CR7BRV 73 073830 -7 608 3V8HP CR7BRV IM58 (x5) 085445 +5 607 TC30AGU CR7BRV IM58 085545 +4 600 ZA/IK3BNO CR7BRV R-13
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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