R2ZCA — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving R2ZCA, decoded by SO8OO in southeastern Poland. 1,709 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 64 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-14.
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 1,709 FT8 messages attributed to R2ZCA as the transmitting token by decoded message structure across 64 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (75%), followed by 20 m (24%) and 10 m (1%). The busiest six-hour window was 01:00-07:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.
Overview
Bands
Last attributed message: 2026-10-14 15:26 UTC
Observed FT8 message patterns
- Attributed sample
- 1,709 messages
- Active dates
- 64 UTC dates
- Estimated median S/N
- -10 dB
- Estimated 10th-90th percentile
- -20 to -0.1 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 489, moderate (-15 to -9 dB) 482, strong (≥ -8 dB) 738.
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 R2ZCA 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 R2ZCA
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
- KO81 · 1,027 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,083 km (approx.)
- Last such locator decoded
- 2026-10-14 14:25 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 | R2ZCA S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-14 15:25 | 40m | -2 / -6 | R6FGF | -15 / -1 | 2 | Partial capture |
| 10-14 14:25 | 40m | -3 / - | RM8CZ | - / -2 | 3 | ✓ Closing fragment |
| 10-14 13:49 | 40m | -7 / - | OL900LTV | - / - | 6 | Partial capture |
| 10-13 02:15 | 40m | - / -9 | YY5EHT | -19 / - | 4 | ✓ Closing fragment |
| 10-12 18:47 | 40m | +5 / -7 | SQ1EG | -8 / - | 4 | ✓ Closing observed |
| 10-12 18:46 | 40m | -2 / - | BG7BVI | - / -18 | 3 | ✓ Closing fragment |
| 10-12 18:43 | 40m | -1 / - | R1ZBB | - / -14 | 4 | Partial capture |
| 10-12 18:39 | 40m | -1 / - | UB2FDL | - / -10 | 5 | Partial capture |
| 10-12 18:38 | 40m | -6 / - | Z62NS | - / - | 2 | Partial capture |
| 10-12 18:12 | 40m | -5 / - | SQ1EG | -8 / -12 | 2 | Partial capture |
| 10-12 18:09 | 40m | -6 / - | RW1CW | - / - | 3 | ✓ Closing fragment |
| 10-12 18:07 | 40m | -5 / - | IK3/UY7LA | - / - | 2 | Partial capture |
| 10-12 18:03 | 40m | -2 / - | UA1ALY | -18 / -13 | 7 | ✓ Closing observed |
| 10-12 02:53 | 40m | - / - | EA5HM | -8 / - | 9 | Partial capture |
| 10-10 16:46 | 40m | -9 / - | EY7BM | - / -16 | 5 | ✓ Closing fragment |
| 10-10 15:36 | 40m | +3 / - | R8ACF | - / -6 | 2 | ✓ Closing fragment |
| 10-10 15:35 | 40m | -9 / - | R4FCK | - / -2 | 2 | ✓ Closing fragment |
| 10-10 15:32 | 40m | -5 / - | R2BRD | -20 / - | 3 | ✓ Closing observed |
| 10-10 15:32 | 40m | -6 / 0 | RZ6AOJ | -6 / -6 | 5 | ✓ Full exchange observed |
| 10-10 15:28 | 40m | -6 / - | 4X5JK | - / -9 | 4 | ✓ Closing fragment |
| 10-10 14:57 | 40m | -6 / - | RK0SK | - / - | 2 | Partial capture |
| 10-10 14:06 | 40m | -8 / - | R0DZ | - / -22 | 4 | ✓ Closing fragment |
| 10-10 14:03 | 40m | -11 / - | K7CA | - / - | 3 | Partial capture |
| 10-09 02:55 | 40m | - / - | G3TKT | -4 / - | 4 | ✓ Closing fragment |
| 10-09 02:02 | 40m | - / +6 | G3TKT | -5 / - | 9 | Partial capture |
| 10-09 01:52 | 40m | - / - | F6FHZ | -20 / - | 2 | Partial capture |
| 10-08 18:02 | 40m | -4 / - | MW6IUT | - / - | 2 | Partial capture |
| 10-08 17:58 | 40m | +16 / -15 | R6DOB/M | -5 / - | 3 | ✓ Closing observed |
| 10-08 12:42 | 40m | -20 / - | R9OFA | - / - | 2 | Partial capture |
| 10-08 12:31 | 40m | -16 / +8 | RA/DL7NV | -19 / -10 | 3 | Partial capture |
| 10-08 12:29 | 40m | -18 / -5 | R80SAA | -8 / - | 3 | ✓ Closing observed |
| 10-07 01:52 | 40m | -17 / -6 | C5R | -19 / -17 | 9 | Partial capture |
| 10-07 01:43 | 40m | -17 / - | C5R | - / -15 | 4 | Partial capture |
| 10-07 01:37 | 40m | -20 / - | UN7PNF | - / -9 | 3 | ✓ Closing fragment |
| 10-04 18:29 | 40m | -8 / - | DL7UKM | - / -15 | 2 | Partial capture |
| 10-04 18:22 | 40m | -8 / -1 | S59A | -12 / -1 | 4 | ✓ Full exchange observed |
| 10-04 18:20 | 40m | -6 / - | DL2YMG | -11 / -15 | 3 | ✓ Closing observed |
| 10-04 18:19 | 40m | - / - | DB6MK | -12 / - | 4 | Partial capture |
| 10-04 18:14 | 40m | -7 / - | R7KEO | - / -13 | 2 | ✓ Closing fragment |
| 10-04 18:11 | 40m | -2 / - | RW6B | -8 / -1 | 3 | ✓ Closing observed |
| 10-04 18:06 | 40m | -8 / - | 9K2MP | - / - | 2 | Partial capture |
| 10-04 18:04 | 40m | -5 / - | RA9MI | - / -6 | 2 | ✓ Closing fragment |
| 10-04 03:18 | 40m | - / - | RT6DU | -4 / - | 2 | ✓ Closing fragment |
| 10-04 03:01 | 40m | -5 / - | KZ7Y | - / - | 3 | Partial capture |
| 10-04 02:58 | 40m | -8 / - | KW4BY | -13 / -9 | 6 | ✓ Closing observed |
| 10-04 02:53 | 40m | -14 / - | 9Y4DG | - / -20 | 2 | ✓ Closing fragment |
| 10-04 02:48 | 40m | -16 / - | KW4BY | - / - | 2 | Partial capture |
| 10-04 02:44 | 40m | -20 / - | KQ4FMX | - / - | 2 | Partial capture |
| 10-04 02:43 | 40m | -20 / -5 | HK3YL | -20 / - | 3 | Partial capture |
| 10-04 02:00 | 40m | - / +1 | EA3AKY | +4 / - | 3 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 021630 -18 1556 R2ZCA YY5EHT R-09 (x2) 134900 -9 1980 OL900LTV R2ZCA KO81 (x5) 135200 -11 1979 VP9/K0PJH R2ZCA KO81 135300 -9 1980 OL900LTV R2ZCA KO81 135330 -5 1979 <ZL50BQD> R2ZCA KO81 142530 -1 1978 RM8CZ R2ZCA KO81 (x3) 152530 -15 2408 R2ZCA R6FGF -06 152615 -2 1978 R6FGF R2ZCA R-01
UTC dB Audio Message 181915 -15 1831 RA6ZS R2ZCA 73
UTC dB Audio Message 083915 -2 2293 RX6DA R2ZCA R-14 (x2) 084200 -16 2373 R2ZCA UA9LKL +04 084215 -10 2293 UA9LKL R2ZCA R-06 084315 -2 2293 CQ R2ZCA KO81 (x2) 084600 -3 2292 OH2ZZ R2ZCA KO81 084645 -15 1853 R2ZCA OH2ZZ -08 084730 -9 2292 OH2ZZ R2ZCA R+01 095745 -15 2293 UF4S R2ZCA KO81 (x2) 095830 -3 1291 R2ZCA UF4S -12 095845 -6 2293 UF4S R2ZCA R-08 095900 +2 1291 R2ZCA UF4S RR73 095915 -7 2293 UF4S R2ZCA 73
UTC dB Audio Message 192130 -5 733 R2ZCA UA3ZNQ KO81 (x3)
UTC dB Audio Message 104400 -21 1915 R2ZCA R6BH -05
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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