CR7CBL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Portugal Most frequent locator attributed to this token: IM58

Receiver-side FT8 activity involving CR7CBL, decoded by SO8OO in southeastern Poland. 53 FT8 messages attributed to this token as transmitter, on 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-15 and 2026-08-17.

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 53 FT8 messages attributed to CR7CBL as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (91%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

53
Messages attributed
13
UTC dates decoded
22
Active 15-min windows
-16 dB
Estimated median S/N

Bands

20m · 53
First attributed message: 2026-06-15
Last attributed message: 2026-08-17 22:01 UTC

Observed FT8 message patterns

Attributed sample
53 messages
Active dates
13 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-23 to -10 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 3.

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 CR7CBL 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 CR7CBL

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 · 17 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,737 km (approx.)
Last such locator decoded
2026-08-17 21:45 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 UTCBandCR7CBL S/NCounterpartCounterpart S/NMsgsCapture
09-11 21:44 40m - / -11 PI4DX +13 / - 2 ✓ Closing fragment
09-11 21:39 40m - / -11 EA8UP -6 / - 2 ✓ Closing fragment
08-17 21:58 20m -15 / - KF8EXX - / -9 2 Partial capture
08-17 21:50 20m - / -6 PD0MNO -20 / - 2 ✓ Closing fragment
08-17 21:45 20m -19 / -23 YO4ATW -10 / -7 5 Partial capture
08-17 21:37 20m -23 / - PD1WD - / 0 3 ✓ Closing fragment
08-17 21:34 20m -10 / -17 I0XNH -13 / -5 2 Partial capture
08-16 16:18 20m - / -17 IU1DXU -16 / - 2 ✓ Closing fragment
08-15 21:41 40m - / -14 S56KO +2 / - 3 ✓ Closing fragment
08-15 17:41 20m - / -21 M1DBW -18 / - 6 ✓ Closing fragment
08-14 20:28 20m - / -16 M7OFN 0 / - 2 ✓ Closing fragment
08-13 20:14 20m - / -6 DC7LR -18 / - 2 ✓ Closing fragment
08-12 19:56 20m - / - G0GHL -11 / - 3 Partial capture
08-12 17:53 20m -14 / - GJ0KYZ -13 / -2 2 ✓ Closing observed
08-12 17:25 20m - / -13 HZ1YJ -21 / - 2 Partial capture
08-12 17:19 20m - / -6 CR5VP -17 / - 2 ✓ Closing fragment
08-10 17:31 20m - / - DL6EL +3 / - 3 Partial capture
08-09 18:36 20m - / -13 UR3HC -6 / - 3 ✓ Closing fragment
08-07 17:21 20m -16 / - E75W - / -12 2 Partial capture
08-06 21:41 20m - / -15 M9KJY +2 / - 4 ✓ Closing fragment
08-05 21:27 20m - / -1 II3DRC -18 / - 2 Partial capture
08-05 21:23 20m - / -11 EA3HMM -2 / - 4 ✓ Closing fragment
08-05 21:12 20m - / -12 EB3JT 0 / - 4 ✓ Closing fragment
07-31 21:52 20m - / -18 M9LDX -14 / - 4 Partial capture
07-31 21:26 20m - / -11 F5NBQ +18 / - 2 ✓ Closing fragment
07-31 19:15 20m - / -9 SV1DKR -2 / - 3 ✓ Closing fragment
07-30 21:50 20m - / -11 SV5BYP -18 / - 3 ✓ Closing fragment
07-30 21:30 20m -19 / -14 K4CAE -17 / -16 2 Partial capture
07-29 22:11 20m - / -17 GM3AND +2 / - 2 ✓ Closing fragment
07-29 21:48 20m - / -10 G7RES -18 / - 3 Partial capture
07-29 19:47 20m - / -2 F5SFT +7 / - 2 ✓ Closing fragment
07-27 22:16 20m - / - EB3JT +2 / - 6 Partial capture
07-27 21:49 20m - / -12 UN7LEW -12 / - 3 ✓ Closing fragment
07-27 19:45 20m - / -17 TK4US -17 / - 3 ✓ Closing fragment
07-27 19:32 20m - / -11 SV9/DH8BQA -4 / - 4 Partial capture
07-26 09:16 20m - / -15 Z62NS -9 / - 5 ✓ Closing fragment
07-22 21:22 20m - / +5 DK6DM -16 / - 2 ✓ Closing fragment
07-21 21:58 20m - / -11 F4MBU -12 / - 2 ✓ Closing fragment
07-20 22:03 20m - / -12 EA8AT -14 / - 2 ✓ Closing fragment
07-20 21:43 20m - / -18 IU5HIU -13 / - 3 Partial capture
07-18 22:01 20m - / -18 UT7UJ -7 / - 4 Partial capture
07-16 22:13 20m - / -11 LZ3CB +12 / - 2 ✓ Closing fragment
07-14 20:21 20m -12 / - HB9EKJ - / -17 2 ✓ Closing fragment
07-14 20:14 20m -18 / -17 Z61DX -2 / -6 6 ✓ Full exchange observed
07-13 20:32 20m - / -16 G0VFB +7 / - 2 ✓ Closing fragment
07-08 23:27 20m -10 / - DK8HC - / -16 2 Partial capture
07-08 23:03 40m - / -17 MW0USK -4 / - 2 ✓ Closing fragment
07-08 17:28 20m - / -6 EA3JW -10 / - 2 Partial capture
07-08 16:56 20m - / -12 PD4FL -16 / - 2 ✓ Closing fragment
07-03 15:52 20m -23 / -9 TM13COL -12 / -15 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
215045 -20 1351  CR7CBL EC5M RR73
230315  -4  944  CR7CBL MW0USK -17 (x2)
215830 -20 1499  CR7CBL PD2XX RR73
220030 -21 1451  CR7CBL F5PBG 73
214100  +3 2631  CR7CBL S56KO -14 (x3)
213930  -6  701  CR7CBL EA8UP -11 (x2)
214430 +10 1059  CR7CBL PI4DX -11 (x2)
20m 
UTC    dB Audio  Message
213745 -24 1831  PD1WD CR7CBL R+00 (x2)
213915 -19 1378  LZ3SU CR7CBL IM58
214200 -15 1036  VK2MBK CR7CBL -10
214430 -19 1275  NP3PR CR7CBL IM58
214530 -17 2259  YO4ATW CR7CBL IM58
214545 -14 2258  CR7CBL YO4ATW -23
214600 -20 2259  YO4ATW CR7CBL R-07
214615  -7 2258  CR7CBL YO4ATW -23
214700 -19 2259  YO4ATW CR7CBL R-07
215015 -18 1753  CR7CBL PD0MNO -06 (x2)
215800 -16 2279  KF8EXX CR7CBL R-09 (x2)
220115 -15 2467  G4KVI CR7CBL 73

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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