Z61DX — reception at SO8OO
Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.
FT8 activity
Receiver-side FT8 activity involving Z61DX, decoded by SO8OO in southeastern Poland. 6,077 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 20 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-10-16.
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 6,077 FT8 messages attributed to Z61DX as the transmitting token by decoded message structure across 20 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (52%), followed by 40 m (13%) and 20 m (13%). Most decodes (51%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -4 dB.
Overview
Bands
Last attributed message: 2026-10-16 06:37 UTC
Observed FT8 message patterns
- Attributed sample
- 6,077 messages
- Active dates
- 20 UTC dates
- Estimated median S/N
- -4 dB
- Estimated 10th-90th percentile
- -13 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 302, moderate (-15 to -9 dB) 1,448, strong (≥ -8 dB) 4,327.
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 Z61DX 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 Z61DX
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
- KN02 · 3,342 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 829 km (approx.)
- Last such locator decoded
- 2026-10-16 06:37 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 | Z61DX S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-16 12:37 | 80m | - / +4 | 9A3A | -12 / - | 2 | ✓ Closing fragment |
| 10-16 09:27 | 80m | - / - | OE4MTI | -13 / - | 10 | Partial capture |
| 10-16 07:27 | 80m | - / - | HB9CYT | -19 / - | 7 | Partial capture |
| 10-16 06:45 | 80m | - / - | UF2F | -16 / - | 3 | Partial capture |
| 10-16 06:26 | 80m | - / 0 | HA8EV | +6 / - | 2 | ✓ Closing fragment |
| 10-16 06:07 | 80m | - / -12 | HA1TNX | +7 / - | 3 | ✓ Closing fragment |
| 10-16 06:04 | 80m | -14 / -6 | UR5UR | -5 / -20 | 3 | ✓ Full exchange observed |
| 10-16 06:00 | 80m | -17 / -20 | EA2WT | -10 / -13 | 5 | ✓ Full exchange observed |
| 10-16 05:48 | 80m | - / -14 | OK1FUK | +6 / - | 3 | ✓ Closing fragment |
| 10-16 05:47 | 80m | -21 / - | EA2DDE | - / -11 | 2 | ✓ Closing fragment |
| 10-16 05:44 | 80m | -20 / -17 | EA8DO | -13 / -14 | 8 | ✓ Full exchange observed |
| 10-16 05:43 | 80m | - / - | HB9TKB | -3 / - | 6 | Partial capture |
| 10-16 05:41 | 80m | - / - | PA1AW | -10 / - | 3 | Partial capture |
| 10-16 05:41 | 80m | -20 / - | IK5VQK | - / -15 | 2 | ✓ Closing fragment |
| 10-16 05:37 | 80m | - / -1 | SP7AH | +4 / - | 3 | ✓ Closing fragment |
| 10-16 05:36 | 80m | - / - | F1ICS | -13 / - | 3 | Partial capture |
| 10-16 05:33 | 80m | - / -5 | OM3ZAS | +5 / - | 4 | ✓ Closing fragment |
| 10-16 05:31 | 80m | -13 / -12 | PA3CPS | -2 / -16 | 4 | ✓ Full exchange observed |
| 10-16 05:29 | 80m | -10 / -2 | OE5RLP | +9 / +8 | 5 | ✓ Full exchange observed |
| 10-16 05:27 | 80m | -12 / -15 | IU5RBX | -23 / -19 | 6 | ✓ Full exchange observed |
| 10-16 05:20 | 80m | - / - | HB9TKB | +4 / - | 3 | Partial capture |
| 10-16 05:19 | 80m | -13 / - | DK3GI | - / -1 | 2 | ✓ Closing fragment |
| 10-16 05:17 | 80m | -11 / -11 | OK1FCR | +13 / +7 | 5 | ✓ Full exchange observed |
| 10-16 05:08 | 80m | -14 / -4 | IZ1DXG | -24 / -21 | 11 | ✓ Full exchange observed |
| 10-16 05:05 | 80m | - / - | SP3IOE | +10 / - | 2 | Partial capture |
| 10-16 05:03 | 80m | -12 / 0 | DL3WA | -5 / -15 | 3 | ✓ Full exchange observed |
| 10-16 05:03 | 80m | - / - | OH5VT | -14 / - | 2 | Partial capture |
| 10-16 04:59 | 80m | -8 / - | DO1MER | - / -13 | 2 | ✓ Closing fragment |
| 10-16 04:58 | 80m | - / - | SP7JLH | +8 / - | 4 | Partial capture |
| 10-16 04:57 | 80m | -16 / - | DH9OK | - / -17 | 3 | ✓ Closing fragment |
| 10-16 04:54 | 80m | -14 / -2 | DJ3HW | +1 / -5 | 6 | ✓ Full exchange observed |
| 10-16 04:53 | 80m | - / +10 | OE3DXA | +14 / - | 3 | ✓ Closing fragment |
| 10-16 04:51 | 80m | - / -7 | IT9DVZ | -16 / - | 3 | ✓ Closing fragment |
| 10-16 04:48 | 80m | - / -10 | SP7SZJ | -4 / - | 3 | ✓ Closing fragment |
| 10-16 04:44 | 80m | -14 / -11 | SQ9DKS | -2 / -10 | 4 | ✓ Full exchange observed |
| 10-16 04:42 | 80m | -16 / - | LZ2XF | - / -13 | 2 | ✓ Closing fragment |
| 10-16 04:37 | 80m | -8 / -4 | ON7HM | -8 / -18 | 6 | ✓ Full exchange observed |
| 10-16 04:37 | 80m | - / - | PE2JMR | -9 / - | 2 | Partial capture |
| 10-16 04:32 | 80m | - / - | SP0LPR | -16 / - | 2 | Partial capture |
| 10-16 04:23 | 80m | -5 / -24 | DO2HQS | +3 / -12 | 6 | ✓ Full exchange observed |
| 10-16 04:22 | 80m | -8 / +1 | LY7M | +14 / +4 | 4 | ✓ Full exchange observed |
| 10-16 04:20 | 80m | -2 / - | DK5CR | - / -19 | 3 | ✓ Closing fragment |
| 10-16 04:19 | 80m | -2 / -4 | LX1ER | +2 / -5 | 21 | ✓ Full exchange observed |
| 10-16 04:17 | 80m | +1 / -1 | YO4CPO | -3 / - | 4 | ✓ Full exchange observed |
| 10-16 04:16 | 80m | -2 / -4 | RM2E | +3 / -13 | 7 | ✓ Full exchange observed |
| 10-16 04:15 | 80m | -1 / -9 | YU0U | +6 / - | 4 | ✓ Closing observed |
| 10-16 04:14 | 80m | - / - | DL6KAI | -6 / - | 2 | Partial capture |
| 10-16 04:08 | 80m | -2 / -5 | F5OWT | +2 / -18 | 6 | ✓ Full exchange observed |
| 10-16 04:02 | 80m | -14 / 0 | OE5DML | +2 / -15 | 5 | ✓ Full exchange observed |
| 10-16 04:00 | 80m | -11 / +2 | YO7ZG | +6 / +9 | 5 | ✓ Full exchange observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 073015 -16 1128 Z61DX HB9CYT JN36 (x3) 092715 -11 1090 Z61DX OE4MTI JN87 (x10) 123745 -13 1676 Z61DX 9A3A R+04 (x2)
UTC dB Audio Message 064430 -17 1858 Z61DX EB5AFK IM98 (x2) 064500 -8 689 Z61DX EA6SX JM19 064530 -1 1319 Z61DX SP3EMA JO82 064530 -5 973 Z61DX IZ0RPS R+03 064530 -21 1859 Z61DX EB5AFK IM98 064600 +3 1318 Z61DX SP3EMA JO82 064600 -4 973 Z61DX IZ0RPS 73 064630 +0 1318 Z61DX SP3EMA JO82 (x2) 064730 -11 973 Z61DX EA6SX -22 (x2) 221200 -12 1884 Z61DX DL3HN JN49 015445 -4 2294 Z61DX DH0KAI JO30 (x2)
UTC dB Audio Message 140445 -11 727 Z61DX F4IFC 73 140500 -6 726 CQ Z61DX KN02 (x5) 140715 -11 973 Z61DX RY3PAG KO83 140730 -2 726 IT9KHI Z61DX +06 (x2) 140845 -11 973 Z61DX RY3PAG KO83 140845 -14 1604 Z61DX I2SIP JN45 140915 -16 973 Z61DX RY3PAG KO83 140930 -1 726 I2SIP Z61DX RR73 140945 -14 1604 Z61DX I2SIP 73 141000 -2 726 CQ Z61DX KN02
UTC dB Audio Message 214830 -3 854 Z61DX SM6LRY JO66 (x2) 022500 -7 2881 Z61DX OH7DSQ KP41 211430 +2 1414 Z61DX UX7QV KN29 (x7)
UTC dB Audio Message 192800 -12 1819 Z61DX EA6TU JM19 192800 -12 1228 Z61DX EA1DZ IN73 192830 -6 1819 Z61DX EA6TU JM19 (x4) 193500 -7 1226 Z61DX M7NNB IO92 (x8) 202630 -16 1227 Z61DX M7NXS IO94
UTC dB Audio Message 115615 -4 784 SP7ROH Z61DX RR73 115715 -5 784 DN9SR Z61DX -23 (x2) 115800 -16 1572 Z61DX SM6ASB JO58 115815 -4 783 CQ Z61DX KN02 115915 -14 783 PD3RH Z61DX +01 115930 -20 1565 Z61DX DN9DHG JO64 115945 -10 783 PD3RH Z61DX +01 (x2) 120030 -20 1565 Z61DX DN9DHG JO64 120045 -10 784 CQ Z61DX KN02 120100 -20 1565 Z61DX DN9DHG JO64 120115 -12 784 2E0LMI Z61DX -11 120230 -8 1195 Z61DX SM6ASB JO58 120430 -12 784 Z61DX DO9JTR JO42
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.
CW
No CW receptions recorded for this callsign in the last 30 days.
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