KR4DVQ — FT8 activity observed at SO8OO
Receiver-side FT8 activity involving KR4DVQ, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-06-16.
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 20 FT8 messages attributed to KR4DVQ as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -6 dB; no usual signal pattern is inferred.
Overview
Observed FT8 message patterns
- Attributed sample
- 20 messages
- Active dates
- 2 UTC dates
- Estimated median S/N
- -6 dB
- Estimated 10th-90th percentile
- -15 to -2 dB
- Recurring-pattern threshold
- Not met
SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 4, strong (≥ -8 dB) 15.
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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).
Frequent counterpart tokens observed at SO8OO
Tokens most often paired with KR4DVQ in decoded directed-looking exchanges:
Most frequent locator attributed to KR4DVQ
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
- EM75 · 11 decoded messages
- SO8OO receiver locator
- KN09VW
- Locator-centre separation
- 8,113 km (approx.)
- Last such locator decoded
- 2026-06-16 02:09 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 | KR4DVQ S/N | Counterpart | Counterpart S/N | Msgs | Capture |
|---|---|---|---|---|---|---|
| 09-11 02:50 | 40m | - / - | IW9FRA | -12 / - | 4 | Partial capture |
| 09-11 02:45 | 40m | - / -3 | EA3HMM | -5 / - | 3 | ✓ Closing fragment |
| 09-11 02:22 | 40m | - / - | MI7XHT | -8 / - | 2 | Partial capture |
| 09-11 02:06 | 40m | - / - | EA3HMM | -7 / - | 3 | Partial capture |
| 09-09 02:38 | 40m | - / -24 | IW9FRA | -16 / - | 9 | Partial capture |
| 09-09 02:34 | 40m | - / -15 | RA6ABC | +8 / - | 2 | ✓ Closing fragment |
| 09-09 02:17 | 40m | - / -7 | HK3YL | -17 / - | 2 | ✓ Closing fragment |
| 09-08 01:50 | 40m | - / - | IK2XDE | -2 / - | 2 | Partial capture |
| 09-08 01:45 | 40m | - / -2 | KS4OT | +2 / - | 2 | Partial capture |
| 09-07 05:05 | 40m | - / -13 | DL2MIJ | 0 / - | 2 | ✓ Closing fragment |
| 09-07 04:55 | 40m | - / - | DK8HC | -12 / - | 4 | Partial capture |
| 09-07 04:53 | 40m | - / -7 | PD1CMP | -13 / - | 2 | ✓ Closing fragment |
| 09-07 04:46 | 40m | - / -12 | PA2RO | -8 / - | 5 | ✓ Closing fragment |
| 09-07 04:45 | 40m | - / -19 | EB3JT | -15 / - | 8 | ✓ Closing fragment |
| 09-07 04:45 | 40m | - / - | F4BYA | -7 / - | 3 | Partial capture |
| 09-07 04:38 | 40m | - / - | F4BYA | +7 / - | 3 | Partial capture |
| 09-07 04:38 | 40m | - / -16 | IU2HUQ | 0 / - | 2 | Partial capture |
| 09-07 04:34 | 40m | - / - | DD1VB | +2 / - | 2 | Partial capture |
| 09-07 04:34 | 40m | - / -10 | IZ2QPP | -7 / - | 5 | ✓ Closing fragment |
| 09-07 04:33 | 40m | - / - | F4BYA | +7 / - | 3 | Partial capture |
| 09-06 02:15 | 40m | - / +6 | LA1QRO | -10 / - | 2 | ✓ Closing fragment |
| 09-01 02:41 | 40m | - / - | F1IQH | +6 / - | 3 | Partial capture |
| 09-01 02:36 | 40m | - / - | PC2J | -5 / - | 5 | Partial capture |
| 09-01 02:36 | 40m | - / - | G5TV | -4 / - | 2 | Partial capture |
| 09-01 02:28 | 40m | - / - | G5TV | -4 / - | 2 | Partial capture |
| 09-01 02:25 | 40m | - / -16 | F1PBZ | +2 / - | 3 | Partial capture |
| 08-31 01:33 | 40m | - / - | IW9FRA | -11 / - | 10 | Partial capture |
| 08-27 02:27 | 40m | - / - | OH1EDK | -10 / - | 2 | Partial capture |
| 08-27 02:26 | 40m | - / - | PC2J | +4 / - | 4 | Partial capture |
| 08-27 02:01 | 40m | - / - | RW3QU | +16 / - | 2 | Partial capture |
| 08-27 01:56 | 40m | - / - | LA2HFA | -2 / - | 4 | Partial capture |
| 08-27 01:28 | 20m | - / - | DK9ZQ | -11 / - | 2 | Partial capture |
| 08-24 01:58 | 40m | - / - | F4BYA | +2 / - | 4 | Partial capture |
| 08-24 01:46 | 40m | - / -23 | F1PBZ | -6 / - | 2 | Partial capture |
| 08-22 01:42 | 20m | - / -19 | IZ8EYN | -20 / - | 2 | Partial capture |
| 08-22 01:37 | 20m | - / -6 | HB9TIH | -10 / - | 5 | ✓ Closing fragment |
| 08-22 01:30 | 20m | - / -16 | A93MO | -8 / - | 4 | ✓ Closing fragment |
| 08-22 00:55 | 20m | - / -18 | DL3MIB | +8 / - | 3 | ✓ Closing fragment |
| 08-12 01:33 | 40m | - / -13 | G7KHF | -17 / - | 3 | ✓ Closing fragment |
| 08-12 01:27 | 20m | - / -13 | SV5BYP | -15 / - | 2 | ✓ Closing fragment |
| 08-11 02:42 | 40m | - / -12 | YO6LM | 0 / - | 2 | Partial capture |
| 08-03 01:43 | 40m | - / -16 | F1PBZ | -15 / - | 2 | Partial capture |
| 08-02 03:11 | 40m | - / - | DH5BM | -12 / - | 6 | Partial capture |
| 08-02 03:07 | 40m | - / - | DM2AB | -6 / - | 2 | ✓ Closing fragment |
| 08-02 03:01 | 40m | - / -12 | DM2AB | -2 / - | 4 | ✓ Closing fragment |
| 08-02 03:01 | 40m | - / - | IW0RLC | -10 / - | 3 | Partial capture |
| 08-02 02:55 | 40m | - / -21 | YO4NF | +2 / - | 4 | ✓ Closing fragment |
| 08-01 02:58 | 40m | - / -10 | HA7TM | -12 / - | 3 | Partial capture |
| 07-31 01:24 | 20m | - / -10 | 9K2OK | -16 / - | 3 | ✓ Closing fragment |
| 07-27 01:48 | 40m | - / - | PC2J | -5 / - | 3 | Partial capture |
Recent FT8 messages decoded at SO8OO
Frequency values are decoder audio offsets in hertz, not RF frequencies.
UTC dB Audio Message 020700 -5 318 KR4DVQ EA3HMM JN00 (x2) 022230 -12 2360 KR4DVQ MI7XHT IO64 (x3) 023200 -13 815 KR4DVQ NP4VA FK68 023330 -10 942 KR4DVQ MI7XHT IO64 024500 -5 318 KR4DVQ EA3HMM JN00 (x3) 025000 -9 1164 KR4DVQ IW9FRA JM68 (x4) 032745 -20 1714 KR4DVQ KC1SYO R+06
UTC dB Audio Message 012330 -14 2358 KR4DVQ OH3JF +00 013030 -9 539 KR4DVQ A93MO -16 (x5) 013700 -9 1924 KR4DVQ HB9TIH JN36 (x5) 014200 -20 1359 KR4DVQ IZ8EYN -19 (x2) 012815 -12 853 KR4DVQ DK9ZQ JO41 (x2)
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