7Z1CB — 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 7Z1CB, decoded by SO8OO in southeastern Poland. 773 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-07-21.
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 773 FT8 messages attributed to 7Z1CB as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (92%), followed by 10 m (8%). Most decodes (53%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.
Overview
Bands
Last attributed message: 2026-07-21 18:19 UTC
Observed FT8 message patterns
- Attributed sample
- 773 messages
- Active dates
- 22 UTC dates
- Estimated median S/N
- -8 dB
- Estimated 10th-90th percentile
- -16 to 0 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 83, moderate (-15 to -9 dB) 275, strong (≥ -8 dB) 415.
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 7Z1CB in decoded directed-looking exchanges:
Most frequent locator attributed to 7Z1CB
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
- LL34 · 198 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 3,567 km (approx.)
- Last such locator decoded
- 2026-07-21 18:19 UTC
Other locator fields attributed to this token: LL43 (156).
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 | 7Z1CB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 07-29 19:36 | 20m | - / -4 | YU7VK | -16 / - | 2 | ✓ Closing fragment |
| 07-29 16:26 | 20m | - / +7 | F1PBZ | -9 / - | 3 | Partial capture |
| 07-29 16:11 | 10m | - / +1 | CT3KN | -16 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 165715 +6 2909 7Z1CB R6FX LN14 165945 -2 308 7Z1CB UB6HVA LN05 165515 -1 1538 7Z1CB OE3SZA -15
UTC dB Audio Message 154600 -16 1187 7Z1CB DH1KU JO30 154630 -18 1625 7Z1CB PE9JAN 73 162645 -11 2368 7Z1CB IX1HPN JN35 162645 -13 2614 7Z1CB F1PBZ +07 (x3) 193615 -14 1358 7Z1CB YU7VK R-04 (x2) 193715 -9 664 7Z1CB R3MAR R-22
UTC dB Audio Message 160930 -21 1975 7Z1CB YO9PH RR73 161100 -18 1376 7Z1CB CT3KN IM12 (x3)
CW
No CW receptions recorded for this callsign in the last 30 days.
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