CT7ARQ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving CT7ARQ, decoded by SO8OO in southeastern Poland. 1,010 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-08-08 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 1,010 FT8 messages attributed to CT7ARQ as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 60 m (18%) and 20 m (10%). Most decodes (83%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (60%); the estimated median was -16.8 dB.
Overview
Bands
Last attributed message: 2026-10-04 23:30 UTC
Observed FT8 message patterns
- Attributed sample
- 1,010 messages
- Active dates
- 17 UTC dates
- Estimated median S/N
- -16.8 dB
- Estimated 10th-90th percentile
- -22 to -10 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 608, moderate (-15 to -9 dB) 352, strong (≥ -8 dB) 50.
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 CT7ARQ 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 CT7ARQ
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
- IN51 · 837 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 2,546 km (approx.)
- Last such locator decoded
- 2026-10-04 23:30 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 UTC | Band | CT7ARQ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-05 13:35 | 40m | - / -13 | F8DWH | -19 / - | 3 | ✓ Closing fragment |
| 10-04 23:26 | 40m | -16 / -1 | LY5O | -18 / +8 | 3 | ✓ Full exchange observed |
| 10-04 23:23 | 40m | -18 / - | N2LQH | - / - | 6 | Partial capture |
| 10-04 23:21 | 40m | -16 / - | ON8FAB | - / -15 | 3 | ✓ Closing fragment |
| 10-04 23:17 | 40m | -16 / - | N8SLT | - / - | 5 | Partial capture |
| 10-04 23:15 | 40m | -16 / - | NU1T | - / - | 3 | Partial capture |
| 10-04 23:09 | 40m | -15 / - | CT1EEX | - / - | 5 | Partial capture |
| 10-04 23:06 | 40m | -12 / - | PS8ARP | - / - | 6 | Partial capture |
| 10-04 23:03 | 40m | -15 / -12 | IU1MRG | -13 / - | 6 | ✓ Closing observed |
| 10-04 22:59 | 40m | -16 / - | K4PWM | - / - | 7 | Partial capture |
| 10-04 22:57 | 40m | -19 / - | CT1EEX | - / - | 4 | Partial capture |
| 10-04 22:43 | 40m | -10 / - | DJ6OI/P | - / - | 6 | Partial capture |
| 10-04 22:20 | 40m | -11 / - | CT1EEX | - / - | 20 | Partial capture |
| 10-04 22:17 | 40m | -13 / - | IQ8CUM | - / - | 2 | Partial capture |
| 10-04 22:15 | 40m | -10 / - | DJ6OI/P | - / -9 | 3 | ✓ Closing fragment |
| 10-04 22:12 | 40m | -15 / - | S57ACD | - / -23 | 5 | Partial capture |
| 10-04 22:08 | 40m | -15 / - | SQ5FM | - / -24 | 5 | ✓ Closing fragment |
| 10-04 22:06 | 40m | -13 / - | SP9TBT | - / -9 | 3 | ✓ Closing fragment |
| 10-04 22:01 | 40m | -14 / - | M0MLS | - / -3 | 5 | Partial capture |
| 10-04 21:59 | 40m | -10 / - | M5MDH/P | - / -7 | 2 | Partial capture |
| 10-04 21:56 | 40m | -14 / -17 | LZ1DPP | -1 / -21 | 9 | ✓ Full exchange observed |
| 10-04 21:55 | 40m | -13 / - | PD0PHA | -20 / -18 | 3 | ✓ Closing observed |
| 10-04 21:51 | 40m | -8 / - | TA7MMI | - / - | 3 | Partial capture |
| 10-04 21:49 | 40m | -9 / -21 | IW7EGY | -2 / +2 | 5 | ✓ Full exchange observed |
| 10-04 21:46 | 40m | -10 / - | EA3IWJ | - / -21 | 6 | ✓ Closing fragment |
| 10-04 21:41 | 40m | -8 / - | I7OXH | - / - | 5 | Partial capture |
| 10-04 21:39 | 40m | -10 / - | M5MDH/P | -9 / -11 | 4 | ✓ Closing observed |
| 10-04 21:36 | 40m | -13 / - | TA7MMI | - / - | 3 | Partial capture |
| 10-04 21:35 | 40m | -12 / - | OE3TVJ | - / - | 2 | Partial capture |
| 10-04 21:33 | 40m | -18 / - | SP1550SK | - / - | 3 | Partial capture |
| 10-04 21:31 | 40m | -16 / -11 | TA2VUZ | -12 / -14 | 7 | ✓ Full exchange observed |
| 10-04 21:29 | 40m | -12 / - | EW8AAC | - / - | 4 | Partial capture |
| 10-04 21:27 | 40m | -14 / -16 | J48S | -7 / -10 | 5 | ✓ Full exchange observed |
| 10-04 18:09 | 40m | -17 / -12 | R5ZQ | +6 / - | 4 | ✓ Closing observed |
| 10-04 17:52 | 40m | - / -10 | DH5BM | +2 / - | 2 | Partial capture |
| 10-04 17:30 | 40m | - / -15 | IZ5ILH | -3 / - | 3 | ✓ Closing fragment |
| 10-04 17:27 | 40m | -24 / - | DF8MH | -9 / - | 2 | ✓ Closing observed |
| 09-29 22:03 | 40m | - / - | DG5PW | -4 / - | 3 | Partial capture |
| 09-29 21:57 | 60m | - / - | IK2EST | -13 / - | 9 | Partial capture |
| 09-29 21:55 | 60m | - / - | DG5PW | -10 / - | 2 | Partial capture |
| 09-29 21:52 | 60m | - / - | DG5PW | -10 / - | 2 | Partial capture |
| 09-29 21:52 | 60m | - / -20 | PA4B | -5 / - | 5 | ✓ Closing fragment |
| 09-29 21:43 | 60m | - / - | G3RPF | -10 / - | 2 | ✓ Closing fragment |
| 09-29 21:39 | 40m | - / - | PI4TX | -5 / - | 3 | Partial capture |
| 09-19 23:48 | 40m | - / - | PD4RJ | -8 / - | 3 | Partial capture |
| 09-19 23:36 | 40m | - / - | PD4RJ | -12 / - | 4 | Partial capture |
| 09-19 23:29 | 40m | - / - | PD4RJ | -8 / - | 4 | Partial capture |
| 09-19 23:23 | 40m | - / - | PD4RJ | -11 / - | 4 | Partial capture |
| 09-19 23:19 | 40m | - / - | PD4RJ | -13 / - | 4 | Partial capture |
| 09-19 23:18 | 40m | - / - | DL6RS | +12 / - | 2 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 232230 -15 1209 ON8FAB CT7ARQ 73 232300 -16 1209 N2LQH CT7ARQ IN51 (x6) 232645 -18 2311 CT7ARQ LY5O -01 232700 -18 1208 LY5O CT7ARQ R+08 (x2) 233030 -13 1208 K4PWM CT7ARQ IN51 093545 -23 1700 CT7ARQ EI2JD -11 133515 -20 1538 CT7ARQ F8DWH IN94 (x3)
UTC dB Audio Message 215345 -4 1592 CT7ARQ PA4B R-21 (x3) 215545 -11 1379 CT7ARQ DG5PW JO30 (x2) 215715 -21 1378 CT7ARQ IK2EST JN45 (x8) 220215 -12 1378 CT7ARQ DG5PW JO30 220245 -13 1378 CT7ARQ IK2EST JN45
UTC dB Audio Message 050500 +12 1238 CT7ARQ DL4ME RR73 050900 -9 2018 CT7ARQ EA6Y JM19 (x6) 054730 -19 1452 CT7ARQ F1TXI -04 (x2) 223800 -22 251 CT7ARQ ON4MAP JO20 (x3) 230730 -21 2153 CT7ARQ F1PBZ -13 (x3)
UTC dB Audio Message 170500 -15 855 CT7ARQ BA3NZ OM99 (x15)
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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