GM4JYB — 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 GM4JYB, decoded by SO8OO in southeastern Poland. 707 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, across 44 UTC dates in the available aggregate history. Observed between 2026-07-03 and 2026-10-21.
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 707 FT8 messages attributed to GM4JYB as the transmitting token by decoded message structure across 44 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (75%), followed by 60 m (19%) and 80 m (6%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.
Overview
Bands
Last attributed message: 2026-10-21 19:35 UTC
Observed FT8 message patterns
- Attributed sample
- 707 messages
- Active dates
- 44 UTC dates
- Estimated median S/N
- -15 dB
- Estimated 10th-90th percentile
- -20 to -7 dB
- Recurring-pattern threshold
- Met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 309, moderate (-15 to -9 dB) 284, strong (≥ -8 dB) 114.
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 GM4JYB 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 GM4JYB
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
- IO88 · 355 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 1,856 km (approx.)
- Last such locator decoded
- 2026-10-21 19:35 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 | GM4JYB S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 10-21 19:35 | 160m | - / - | SP3HRN | +13 / - | 2 | Partial capture |
| 10-21 19:31 | 160m | -16 / - | MM0HVU | - / +8 | 2 | Partial capture |
| 10-21 19:30 | 160m | -16 / -10 | DC0GL | -6 / - | 10 | ✓ Closing observed |
| 10-21 19:28 | 160m | - / -18 | YO2NAA | -6 / - | 4 | ✓ Closing fragment |
| 10-21 19:28 | 160m | -12 / -12 | IK3/UY7LA | 0 / - | 2 | Partial capture |
| 10-21 19:18 | 160m | -14 / - | VK3NX | - / - | 6 | Partial capture |
| 10-21 19:18 | 160m | - / -16 | LY2PAD | -5 / - | 2 | ✓ Closing fragment |
| 10-21 19:16 | 160m | -14 / - | UN0GY | - / - | 2 | Partial capture |
| 10-20 18:58 | 60m | -12 / -5 | IK4CBO | +2 / - | 5 | ✓ Closing observed |
| 10-20 18:58 | 60m | -12 / -10 | SP2EWQ | +5 / - | 4 | ✓ Closing observed |
| 10-20 18:57 | 60m | -12 / -6 | OM7AMA | 0 / - | 4 | ✓ Full exchange observed |
| 10-20 18:49 | 60m | - / -14 | DL5NTA | -10 / - | 3 | ✓ Closing fragment |
| 10-20 18:43 | 60m | - / -20 | SV1SUO | -8 / - | 2 | ✓ Closing fragment |
| 10-20 18:40 | 60m | - / -5 | OZ9FF | -6 / - | 2 | ✓ Closing fragment |
| 10-18 22:07 | 60m | - / -14 | EB1LA | -2 / - | 4 | ✓ Closing fragment |
| 10-16 22:27 | 160m | -14 / -3 | LY8O | -5 / - | 4 | ✓ Full exchange observed |
| 10-16 22:24 | 160m | -13 / -1 | 4J3DJ | -2 / +1 | 7 | ✓ Full exchange observed |
| 10-12 22:01 | 160m | -9 / - | UN0GY | - / - | 6 | Partial capture |
| 10-12 22:00 | 160m | -16 / -15 | RX6DA | -4 / +2 | 4 | ✓ Full exchange observed |
| 10-12 21:58 | 160m | -19 / -10 | F5NZ | -5 / - | 4 | ✓ Full exchange observed |
| 10-12 21:55 | 160m | -20 / -5 | SP2HJN | +4 / - | 7 | ✓ Full exchange observed |
| 10-12 21:53 | 160m | -10 / -12 | IW1GEU | -3 / - | 4 | ✓ Full exchange observed |
| 10-12 21:38 | 60m | - / -13 | EC1DD | -9 / - | 3 | ✓ Closing fragment |
| 10-12 21:33 | 60m | - / -10 | EA3BMU | -24 / - | 2 | Partial capture |
| 10-12 21:33 | 60m | - / -3 | IZ0MIT | -1 / - | 3 | ✓ Closing fragment |
| 10-12 21:29 | 60m | - / -3 | F4ESO | +4 / - | 2 | Partial capture |
| 10-11 21:57 | 160m | -16 / - | M9DNC | - / -15 | 4 | ✓ Closing fragment |
| 10-11 21:51 | 160m | -17 / -3 | F5PPO | -1 / - | 4 | ✓ Closing observed |
| 10-11 21:49 | 160m | -16 / -15 | OZ7DR | -10 / +6 | 4 | ✓ Full exchange observed |
| 10-11 21:43 | 160m | -10 / - | LA6VQ | -16 / - | 4 | ✓ Full exchange observed |
| 10-11 21:43 | 160m | -18 / -13 | OM2WW | +16 / +5 | 6 | ✓ Full exchange observed |
| 10-11 21:41 | 160m | -15 / -9 | F4BPO | +7 / +10 | 4 | ✓ Full exchange observed |
| 10-11 21:39 | 160m | -15 / - | G8OCV | - / - | 2 | Partial capture |
| 10-10 22:17 | 160m | - / - | OM2WW | +7 / - | 4 | Partial capture |
| 10-10 22:13 | 160m | - / -9 | OK1CI | +2 / - | 2 | ✓ Closing fragment |
| 10-08 22:09 | 60m | -10 / - | VR2ZXP | - / - | 2 | Partial capture |
| 10-08 22:02 | 160m | -10 / - | ON8FAB | - / -13 | 4 | ✓ Closing fragment |
| 10-08 21:58 | 160m | - / -14 | UX0QT | -11 / - | 5 | ✓ Closing fragment |
| 10-08 21:58 | 160m | -17 / -15 | OM3PC | +14 / - | 9 | ✓ Full exchange observed |
| 10-08 21:58 | 160m | - / - | SP9CLQ | +2 / - | 3 | Partial capture |
| 10-08 21:55 | 160m | -13 / - | G0ROG | - / - | 2 | ✓ Closing fragment |
| 10-08 21:54 | 160m | -15 / -6 | R5WW | 0 / -2 | 5 | ✓ Full exchange observed |
| 10-08 21:49 | 160m | - / -14 | OM3SX | +6 / - | 5 | ✓ Closing fragment |
| 10-08 21:48 | 160m | - / - | OM2WW | +6 / - | 3 | Partial capture |
| 10-06 19:53 | 160m | - / -26 | SQ2BXI | -21 / - | 15 | Partial capture |
| 10-06 19:53 | 160m | -17 / - | SP4LIN | +3 / - | 2 | ✓ Closing observed |
| 10-06 19:49 | 160m | -18 / - | ON7PM | - / -8 | 2 | ✓ Closing fragment |
| 10-06 19:46 | 160m | -24 / - | M0IOY | -22 / - | 4 | ✓ Closing observed |
| 10-06 19:45 | 160m | -18 / -1 | SM1NJC | +4 / +10 | 4 | ✓ Full exchange observed |
| 10-06 19:42 | 160m | - / -11 | YL3CW | +4 / - | 2 | ✓ Closing fragment |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 193100 -2 1681 GM4JYB DC0GL R-10 193115 -20 2053 MM0HVU GM4JYB R+08 193130 -5 1681 GM4JYB DC0GL R-10 193145 -13 2052 DC0GL GM4JYB RR73 193200 -9 1681 GM4JYB DC0GL 73 193215 -11 2052 MM0HVU GM4JYB R+08 193230 -2 1251 GM4JYB DC0GL R-10 193245 -18 2052 DC0GL GM4JYB RR73 193300 -6 1251 GM4JYB DC0GL 73 193315 -18 2052 DC0GL GM4JYB RR73 193345 -16 2020 CQ GM4JYB IO88 (x2) 193500 +11 2020 GM4JYB SP3HRN JO71 (x2) 193530 -8 1803 CQ GM4JYB IO88
UTC dB Audio Message 185715 -13 733 OM7AMA GM4JYB IO88 185730 -1 805 GM4JYB OM7AMA -06 185745 -12 733 OM7AMA GM4JYB R+14 185800 +0 805 GM4JYB OM7AMA RR73 185830 +6 734 GM4JYB SP2EWQ JO93 185830 +6 2255 GM4JYB IK4CBO JN54 185900 +6 734 GM4JYB SP2EWQ R-10 185915 -12 733 SP2EWQ GM4JYB RR73 185930 +3 734 GM4JYB SP2EWQ 73 185930 +3 2255 GM4JYB IK4CBO JN54 (x2) 190015 -12 732 IK4CBO GM4JYB RR73 190030 -1 2255 GM4JYB IK4CBO 73 190115 -13 733 PA1KK GM4JYB -07 190300 -12 732 GM4JYB F5LMJ 73
UTC dB Audio Message 215830 -6 2201 PH1RIS GM4JYB IO88 215900 -11 2200 CT7AUT GM4JYB IO88 (x3) 220015 -12 2200 GM4JYB IK6RAM JN62 220030 -9 2201 CT2HEX GM4JYB -05 220045 -14 2200 GM4JYB IK6RAM JN62 220100 -7 2201 CT2HEX GM4JYB -05 220115 -10 2200 GM4JYB IK6RAM JN62 220130 -8 2201 CT2HEX GM4JYB RR73 220200 -8 2201 IK6RAM GM4JYB -09 (x2) 220400 -8 2201 EI6JZB GM4JYB +09 220415 -13 2199 GM4JYB EI6JZB R+03 220430 -10 2201 EI6JZB GM4JYB RR73
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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