Z31PM — 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 Z31PM, decoded by SO8OO in southeastern Poland. 691 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 41 UTC dates in the available aggregate history. Observed between 2026-07-23 and 2026-10-20.
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 691 FT8 messages attributed to Z31PM as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (41%), followed by 160 m (35%) and 40 m (13%). Most decodes (59%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (61%); the estimated median was -6 dB.
Overview
Bands
Last attributed message: 2026-10-20 04:37 UTC
Observed FT8 message patterns
- Attributed sample
- 691 messages
- Active dates
- 41 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -17 to +5 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 90, moderate (-15 to -9 dB) 179, strong (≥ -8 dB) 422.
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 Z31PM 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 Z31PM
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
- KN01 · 60 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 940 km (approx.)
- Last such locator decoded
- 2026-09-23 17:23 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 | Z31PM S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-19 21:56 | 40m | -12 / -5 | M0OVG | -10 / -13 | 3 | Partial capture |
| 10-18 03:24 | 80m | - / - | DK8HC | +4 / - | 3 | Partial capture |
| 10-18 03:23 | 80m | - / - | R4UA | -1 / - | 2 | Partial capture |
| 10-18 03:21 | 80m | -14 / -25 | TF3VG | -17 / -16 | 6 | ✓ Full exchange observed |
| 10-18 03:15 | 40m | -5 / - | VE3NEA | - / -25 | 3 | Partial capture |
| 10-18 03:14 | 40m | -8 / - | CO6XX | - / -19 | 2 | Partial capture |
| 10-17 19:13 | 40m | -7 / - | BA8BLK | - / -23 | 3 | ✓ Closing fragment |
| 10-17 19:11 | 40m | -11 / - | G6DXY | - / -16 | 3 | ✓ Closing fragment |
| 10-17 19:09 | 40m | -11 / - | DD3ZZ | -6 / -10 | 3 | ✓ Closing observed |
| 10-17 19:07 | 40m | - / -7 | IZ2AMW | +2 / - | 6 | Partial capture |
| 10-17 16:39 | 40m | -8 / - | 3D2USU | - / -22 | 3 | Partial capture |
| 10-15 16:53 | 40m | -8 / +1 | DD3ZZ | -9 / -8 | 5 | ✓ Full exchange observed |
| 10-15 16:51 | 40m | -9 / - | SU8JOTA | - / -6 | 4 | Partial capture |
| 10-15 16:47 | 40m | -7 / - | DG5UDO/P | - / -5 | 5 | Partial capture |
| 10-15 04:08 | 80m | - / - | F5OYA/P | -12 / - | 26 | Partial capture |
| 10-15 04:07 | 80m | - / 0 | DL8TV | +10 / - | 10 | Partial capture |
| 10-15 04:07 | 80m | - / - | DL9KM | +1 / - | 5 | Partial capture |
| 10-15 04:07 | 80m | - / -4 | IK4TVP | +7 / - | 6 | Partial capture |
| 10-15 04:07 | 80m | - / -10 | RD9M/3 | -9 / - | 7 | Partial capture |
| 10-15 04:07 | 80m | - / -14 | RO5A | 0 / - | 2 | Partial capture |
| 10-15 04:07 | 80m | - / - | UT5MB | +8 / - | 2 | Partial capture |
| 10-15 04:06 | 80m | -2 / - | XE2X | - / -16 | 7 | ✓ Closing fragment |
| 10-15 03:59 | 80m | -5 / - | XE2X | - / -17 | 8 | Partial capture |
| 10-15 02:52 | 80m | -15 / - | XE2X | - / -17 | 5 | Partial capture |
| 10-15 02:43 | 40m | -4 / - | R8LCA | - / -20 | 3 | Partial capture |
| 10-15 02:41 | 40m | -9 / - | W4SFX | - / -15 | 2 | ✓ Closing fragment |
| 10-15 02:41 | 40m | - / - | OO6A | -22 / - | 2 | Partial capture |
| 10-14 20:11 | 160m | -14 / - | OH1WR | - / -20 | 2 | Partial capture |
| 10-14 20:10 | 160m | - / -19 | LX2A | +2 / - | 2 | ✓ Closing fragment |
| 10-12 05:35 | 80m | - / - | I0WTD | -9 / - | 2 | Partial capture |
| 10-12 05:35 | 80m | -22 / -21 | IK4TVP | -6 / -6 | 6 | Partial capture |
| 10-12 05:33 | 80m | -10 / -13 | T77RN | -6 / -16 | 5 | ✓ Full exchange observed |
| 10-11 06:02 | 40m | -16 / - | 9H6C | - / -11 | 5 | ✓ Closing fragment |
| 10-10 22:02 | 80m | +1 / -6 | 5P1OT | -11 / -12 | 6 | ✓ Full exchange observed |
| 10-10 22:02 | 80m | - / - | DL7KB | -4 / - | 7 | Partial capture |
| 10-10 21:59 | 80m | - / - | RA3ICA | -9 / - | 6 | Partial capture |
| 10-10 18:46 | 80m | - / +3 | IV3JRW | -6 / - | 2 | Partial capture |
| 10-10 18:38 | 80m | - / - | DC5PPM | +8 / - | 3 | Partial capture |
| 10-09 22:26 | 40m | - / - | EA1BCK | -16 / - | 2 | Partial capture |
| 10-09 17:32 | 160m | - / -7 | OM3SX | +12 / - | 3 | Partial capture |
| 10-09 17:31 | 160m | - / -15 | SV3GKU | -1 / - | 2 | ✓ Closing fragment |
| 10-09 17:18 | 40m | -13 / - | S21SDR | - / -16 | 5 | Partial capture |
| 10-08 19:21 | 80m | -18 / - | D2UY | - / -21 | 2 | Partial capture |
| 10-08 19:10 | 40m | -15 / -14 | G0BAZ | -13 / -18 | 4 | ✓ Full exchange observed |
| 10-08 19:05 | 40m | -13 / - | EY7BM | - / -13 | 5 | ✓ Closing fragment |
| 10-08 18:54 | 80m | - / - | UR3LM | +2 / - | 2 | Partial capture |
| 10-08 18:52 | 80m | -11 / - | 9K2GR | - / -11 | 5 | ✓ Closing fragment |
| 10-06 05:02 | 40m | -13 / - | C5R | - / -12 | 4 | Partial capture |
| 10-06 04:52 | 80m | -10 / - | KY2J | -8 / -11 | 7 | Partial capture |
| 10-06 04:49 | 80m | -4 / -15 | KV4T | -20 / - | 2 | ✓ Closing observed |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 191200 -8 1882 G6DXY Z31PM -16 (x2) 191330 -7 2230 BA8BLK Z31PM -23 (x3) 191715 -21 2230 Z31PM EA3BKG -04 031430 -10 2230 CO6XX Z31PM -19 (x2) 031530 -4 2230 VE3NEA Z31PM -25 (x3) 215600 -12 2512 M0OVG Z31PM -13 (x2) 215645 -10 1598 Z31PM M0OVG R-05 043730 -20 2131 KL7J Z31PM -12
UTC dB Audio Message 042415 -14 2244 Z31PM F5OYA/P JN13 204700 -3 2358 D2UY Z31PM -23 205215 +0 1033 Z31PM DK9PH JO41 205300 -6 2592 D2UY Z31PM RR73 032115 -14 2284 TF3VG Z31PM -16 (x3) 032230 -15 1106 Z31PM TF3VG R-25 032245 -9 2285 TF3VG Z31PM RR73 032300 -19 1106 Z31PM TF3VG 73 032300 -2 2434 Z31PM R4UA LO24 (x2) 032400 +7 565 Z31PM DK8HC JO42 (x3)
UTC dB Audio Message 220945 +16 2890 Z31PM SO1CJ R-08 221000 -17 2379 SO1CJ Z31PM RR73 221015 +17 2890 Z31PM SO1CJ 73 221045 +9 957 Z31PM SN6P JO80 (x2) 173100 -5 592 Z31PM SV3GKU -15 (x2) 173200 +13 335 Z31PM OM3SX KN08 (x3) 201015 +3 1756 Z31PM LX2A R-19 (x2) 201130 -15 2353 OH1WR Z31PM -20 (x2) 031815 +13 1609 Z31PM IW3GRG JN65
UTC dB Audio Message 115315 -2 2688 Z31PM F1PBZ -07 (x3) 155045 -11 2380 Z31PM F1ODM -07 (x3) 060915 -15 1177 Z31PM SV5ADM R+00 132630 -16 2394 Z31PM CR7CDR IM58 (x3) 132800 -10 822 Z31PM CS7AWL IM58 (x3)
UTC dB Audio Message 185500 +12 2465 Z31PM M0PTZ 73 185530 +8 827 Z31PM G4BWQ R-08 (x4) 190430 -3 1933 Z31PM EA3CFV JN11 (x4) 190630 -9 879 Z31PM M7KBB IO90 190630 +0 1933 Z31PM EA3CFV R-18 190700 -11 879 Z31PM M7KBB IO90 (x3) 190900 -14 1938 Z31PM DH6AS JO31
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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