YT7DX — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving YT7DX, decoded by SO8OO in southeastern Poland. 1,495 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, across 46 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-07.
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 1,495 FT8 messages attributed to YT7DX as the transmitting token by decoded message structure across 46 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (36%), followed by 20 m (32%) and 40 m (29%). Most decodes (68%) 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 (90%); the estimated median was +5 dB.
Overview
Bands
Last attributed message: 2026-10-07 15:55 UTC
Observed FT8 message patterns
- Attributed sample
- 1,495 messages
- Active dates
- 46 UTC dates
- Estimated median S/N
- +5 dB
- Estimated 10th-90th percentile
- -8 to +15 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 30, moderate (-15 to -9 dB) 114, strong (≥ -8 dB) 1,351.
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 YT7DX 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 YT7DX
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
- JN95 · 151 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 536 km (approx.)
- Last such locator decoded
- 2026-10-06 19:13 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 | YT7DX S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-07 15:54 | 40m | -3 / -13 | DC1SN | -7 / - | 4 | ✓ Closing observed |
| 10-07 15:52 | 40m | -2 / - | RA6OD | -11 / -6 | 4 | ✓ Closing observed |
| 10-06 20:21 | 80m | +10 / - | R4PF | - / -8 | 2 | ✓ Closing fragment |
| 10-06 20:13 | 80m | +8 / - | V51WH | - / -21 | 2 | Partial capture |
| 10-06 19:50 | 80m | +11 / - | R6LKG | - / -16 | 3 | Partial capture |
| 10-06 19:46 | 80m | +14 / - | V51PJ | - / -14 | 5 | Partial capture |
| 10-06 19:42 | 80m | +12 / - | R6LKG | - / -14 | 3 | Partial capture |
| 10-06 19:39 | 80m | +12 / - | JG3TRB | - / -14 | 2 | ✓ Closing fragment |
| 10-06 19:38 | 80m | +10 / - | JA7GLO | - / -12 | 2 | ✓ Closing fragment |
| 10-06 19:37 | 80m | +10 / -14 | R1BQR | -21 / -9 | 4 | ✓ Full exchange observed |
| 10-06 19:36 | 80m | +12 / - | JN1NBU | - / -17 | 2 | ✓ Closing fragment |
| 10-06 19:35 | 80m | +8 / - | BA5AN | - / -10 | 2 | ✓ Closing fragment |
| 10-06 19:33 | 80m | +10 / - | YT2ZEZ | -12 / +3 | 3 | ✓ Closing observed |
| 10-06 19:31 | 80m | +7 / - | JA5NPV | - / -14 | 2 | ✓ Closing fragment |
| 10-06 19:30 | 80m | +14 / - | JA7GLO | - / -13 | 2 | Partial capture |
| 10-06 19:29 | 80m | +10 / - | JA8JNU | - / -21 | 2 | ✓ Closing fragment |
| 10-06 19:28 | 80m | +11 / - | JA6MWW | - / -12 | 2 | ✓ Closing fragment |
| 10-06 19:26 | 80m | +11 / - | JO7KMB | - / -14 | 4 | ✓ Closing fragment |
| 10-06 19:25 | 80m | +12 / - | JA5NPV | - / -19 | 2 | Partial capture |
| 10-06 19:23 | 80m | +10 / - | RW9FZ | - / -9 | 3 | ✓ Closing fragment |
| 10-06 19:22 | 80m | -10 / - | JA6LCJ | - / - | 2 | ✓ Closing fragment |
| 10-06 19:18 | 80m | +6 / - | R3ND | - / -12 | 4 | ✓ Closing fragment |
| 10-06 19:16 | 80m | +10 / -19 | JA9BFN | -13 / -6 | 4 | ✓ Full exchange observed |
| 10-06 19:15 | 80m | +14 / - | JA0LFV | - / -18 | 2 | ✓ Closing fragment |
| 10-06 19:14 | 80m | +8 / - | RK0SC | - / -13 | 3 | ✓ Closing fragment |
| 10-06 19:12 | 80m | +10 / 0 | YT2ZEZ | -9 / - | 6 | Partial capture |
| 10-06 19:07 | 80m | +4 / +1 | YO9HP | -7 / +3 | 4 | ✓ Full exchange observed |
| 10-06 14:49 | 40m | +10 / - | R8KAW/P | - / - | 2 | Partial capture |
| 10-06 14:46 | 40m | +16 / - | JR1KAG | - / -18 | 2 | ✓ Closing fragment |
| 10-06 14:39 | 40m | +14 / - | R8KAW/P | - / -18 | 8 | Partial capture |
| 10-06 14:35 | 40m | +3 / - | R8KAW/P | - / -18 | 3 | Partial capture |
| 10-06 14:28 | 40m | +10 / - | <...> | - / -4 | 5 | Partial capture |
| 10-06 14:24 | 40m | +3 / - | OL900JAR | - / -4 | 6 | Partial capture |
| 10-06 14:17 | 40m | +3 / - | M0PJE/P | - / - | 6 | Partial capture |
| 10-05 19:14 | 80m | +10 / - | R1CDJ | - / -17 | 2 | Partial capture |
| 10-05 19:08 | 80m | +8 / - | R1CDJ | - / -18 | 4 | Partial capture |
| 10-05 18:58 | 80m | +3 / -11 | RA1QCX | +1 / -10 | 7 | ✓ Full exchange observed |
| 10-05 18:54 | 80m | +12 / -18 | R1BQR | -10 / -12 | 7 | ✓ Full exchange observed |
| 10-05 18:53 | 80m | +12 / - | R4RJ | - / -11 | 2 | Partial capture |
| 10-05 18:50 | 80m | +16 / - | HG6IOM | -18 / -13 | 3 | ✓ Closing observed |
| 10-05 18:45 | 80m | +11 / - | UC1C | - / -20 | 3 | ✓ Closing fragment |
| 10-05 18:44 | 80m | +18 / - | RA4APF | - / -11 | 2 | ✓ Closing fragment |
| 10-05 18:42 | 80m | +14 / -16 | UA4PDJ | -12 / -12 | 5 | ✓ Full exchange observed |
| 10-05 18:36 | 80m | +1 / -13 | SP6FME | +2 / +1 | 4 | ✓ Full exchange observed |
| 10-05 18:35 | 80m | 0 / - | R6YT | - / -8 | 2 | ✓ Closing fragment |
| 10-05 18:29 | 80m | +14 / - | R2FCT | - / -13 | 2 | ✓ Closing fragment |
| 10-04 17:14 | 40m | -5 / -12 | R4PFY | -13 / -8 | 3 | ✓ Full exchange observed |
| 10-04 16:59 | 80m | - / -14 | RO2E/M | -9 / - | 2 | Partial capture |
| 10-04 16:56 | 80m | +4 / - | RC9WC | - / -12 | 2 | Partial capture |
| 10-04 16:54 | 80m | +4 / - | RN6LPC | - / -5 | 4 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 144315 +17 391 R8KAW/P YT7DX JN95 (x3) 144615 +16 391 JR1KAG YT7DX -18 (x2) 144915 +9 391 R8KAW/P YT7DX JN95 (x2) 155215 +3 374 RA6OD YT7DX -06 (x2) 155300 -11 1570 YT7DX RA6OD RR73 155315 -4 1837 RA6OD YT7DX -06 155430 -10 1518 YT7DX DC1SN JN48 (x3) 155545 -3 1519 DC1SN YT7DX RR73
UTC dB Audio Message 194230 +14 348 R6LKG YT7DX -14 (x3) 194645 +11 348 V51PJ YT7DX -14 (x5) 195000 +10 348 R6LKG YT7DX -16 (x3) 201345 +11 298 V51WH YT7DX -21 (x2) 202130 +7 298 R4PF YT7DX -08 (x2)
UTC dB Audio Message 180215 -15 1226 YT7DX ER1KW 73 180230 -6 1872 IK4CBO YT7DX -02 180245 -9 1723 YT7DX IK4CBO R+02 180300 -4 1872 IK4CBO YT7DX RR73 180315 -20 1361 YT7DX IZ2ACM JN45 180315 -6 1723 YT7DX IK4CBO 73 180315 +12 2743 YT7DX DG0OBU +07 180330 -2 1872 IZ2ACM YT7DX -07 180345 -18 1361 YT7DX IZ2ACM R-13 180345 +6 2743 YT7DX DG0OBU +07 180400 +0 1873 IZ2ACM YT7DX RR73 180430 +0 1873 DG0OBU YT7DX R+00 (x2) 180615 +6 2743 YT7DX DG0OBU RR73 180800 +2 1872 DG0OBU YT7DX 73
UTC dB Audio Message 124615 +0 2559 YT7DX F5MXH 73 124715 -13 2559 YT7DX F5PBG 73 125245 +19 2497 YT7DX R6OAG R-09 (x2) 124130 +3 1170 YT7DX RX6DA -04 (x4) 124530 +9 473 YT7DX DF4BR JO43 124700 -12 2460 YT7DX UT4QM KN77 (x2) 125030 +1 762 YT7DX GM0SDV -16 (x4)
UTC dB Audio Message 071315 -15 1387 YT7DX R6DWD R+00 090845 -9 1067 YT7DX DL3MIB JN57 (x3)
UTC dB Audio Message 190845 +3 1469 <...> YT7DX JN95 (x2) 190930 +12 326 YT7DX OK1FRG +00 190945 +6 1469 <...> YT7DX JN95 191000 +10 326 YT7DX OK1FRG +00 191015 +6 1469 <...> YT7DX R-12 (x6)
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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