DF8QB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving DF8QB, decoded by SO8OO in southeastern Poland. 426 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-08-31.

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 426 FT8 messages attributed to DF8QB as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (42%), followed by 80 m (31%) and 20 m (21%). The busiest six-hour window was 17:00-23:00 UTC, containing 41% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (84%); the estimated median was +2.8 dB.

Overview

426
Messages attributed
14
UTC dates decoded
57
Active 15-min windows
+2.8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-10
Last attributed message: 2026-08-31 22:12 UTC

Observed FT8 message patterns

Attributed sample
426 messages
Active dates
14 UTC dates
Estimated median S/N
+2.8 dB
Estimated 10th-90th percentile
-11 to +14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 47, strong (≥ -8 dB) 357.

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.

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 DF8QB

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
JO31 · 209 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-08-31 22:12 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 UTCBandDF8QB S/NCounterpartCounterpart S/NMsgsCapture
08-31 22:09 80m +6 / - R9OAE - / - 7 Partial capture
08-31 22:07 80m - / - SP6FME +12 / - 2 Partial capture
08-31 22:04 80m +1 / -16 SV9QWC -12 / -10 10 ✓ Full exchange observed
08-31 22:00 80m -10 / - SV9QWC - / - 2 Partial capture
08-31 21:35 80m - / - SP6FME +5 / - 3 Partial capture
08-31 21:33 80m - / - DL5DQZ -4 / - 2 Partial capture
08-31 21:32 80m -3 / -5 LY2TS -24 / -16 6 ✓ Full exchange observed
08-31 21:26 80m +2 / - MI0OBC - / +6 3 ✓ Closing fragment
08-31 21:22 80m -24 / - <...> - / -20 2 Partial capture
08-30 12:16 10m -8 / - TL8GD - / - 2 ✓ Closing fragment
08-30 10:54 10m -4 / - CR7BRV - / -6 4 ✓ Closing fragment
08-30 10:45 10m 0 / - VK6IQ - / - 11 Partial capture
08-30 10:42 10m +8 / - <...> - / +2 5 Partial capture
08-30 10:39 10m -2 / - VK6IQ - / - 5 Partial capture
08-30 10:37 10m -4 / - LZ1EV - / - 4 ✓ Closing fragment
08-30 05:46 40m +18 / - HI3RRR - / - 2 Partial capture
08-30 05:44 40m +8 / - HK5OLL - / -15 5 ✓ Closing fragment
08-30 05:41 40m +10 / - OA4ENG - / -4 2 ✓ Closing fragment
08-30 05:39 40m +10 / - DK1HZ +3 / -13 3 ✓ Closing observed
08-30 05:37 40m +13 / - HI3RRR - / - 3 Partial capture
08-30 05:36 40m +10 / - F5OYA/P - / - 2 ✓ Closing fragment
08-30 05:34 40m +6 / - TI5GAX - / -1 3 ✓ Closing fragment
08-30 05:31 40m +15 / - W3GO - / -13 2 ✓ Closing fragment
08-30 05:29 40m +14 / -5 UI6O -8 / -8 4 ✓ Full exchange observed
08-30 05:29 40m - / - DK1HZ +12 / - 5 Partial capture
08-30 04:55 20m - / -15 BG0FQU -22 / - 2 Partial capture
08-30 04:52 20m - / +8 UA4FEN +6 / - 2 Partial capture
08-30 04:43 20m - / - R3KLE -13 / - 2 ✓ Closing fragment
08-30 03:38 80m - / -2 DL8OBF +8 / - 8 Partial capture
08-30 03:36 80m 0 / - W9HT - / - 2 ✓ Closing fragment
08-30 03:35 80m 0 / - W4SH - / - 2 Partial capture
08-30 03:34 80m - / - SP1ZMO +8 / - 5 Partial capture
08-30 03:34 80m +4 / - DL8OBF - / - 2 Partial capture
08-30 03:32 80m -1 / - W4KFC - / - 2 Partial capture
08-30 03:27 80m +4 / - K4YT -12 / -9 5 ✓ Closing observed
08-30 03:26 80m +7 / -18 PY4QQ -23 / -22 5 ✓ Full exchange observed
08-30 03:25 80m +8 / +4 F5LMJ -12 / -7 5 ✓ Full exchange observed
08-30 03:24 80m +5 / -10 KF4JHG -21 / -19 4 ✓ Full exchange observed
08-30 03:23 80m +6 / -16 HI8R -4 / 0 3 ✓ Full exchange observed
08-30 03:21 80m +7 / -6 UR5SG +20 / - 5 ✓ Closing observed
08-30 03:20 80m - / - F5PRH 0 / - 2 Partial capture
08-30 03:20 80m +16 / - W3GQ - / - 2 ✓ Closing fragment
08-30 03:18 80m +7 / -3 SM7TZK +1 / +5 6 ✓ Full exchange observed
08-30 03:15 80m +10 / - DL2VEL - / - 3 Partial capture
08-30 03:13 80m +4 / - 4X1UF - / -19 3 ✓ Closing fragment
08-30 03:11 80m +4 / +6 ON1JP -20 / -13 4 ✓ Full exchange observed
08-30 03:10 80m +12 / -5 G8OO +2 / +1 5 ✓ Full exchange observed
08-30 03:08 80m +12 / -4 5P1KZX +2 / -4 5 ✓ Full exchange observed
08-30 03:07 80m +11 / - IU5LQC -7 / +8 4 ✓ Closing observed
08-30 03:05 80m +7 / - UT2PC +13 / - 6 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

10m
UTC    dB Audio  Message
104815  +0 1026  VK6IQ DF8QB JO31 (x6)
105415  -9 1395  CS7AVD DF8QB JO31
105445  -8  606  CR7BRV DF8QB JO31 (x4)
121315  -6  556  TL8GD DF8QB JO31 (x3)
133245 -13 1068  DF8QB RR73; OE2HEM <...> +00
80m
UTC    dB Audio  Message
220630  -2 1562  SV9QWC DF8QB R-10
220645 -11 1504  DF8QB SV9QWC -16
220700  +2 1563  SV9QWC DF8QB R-10
220715 -10 1504  DF8QB SV9QWC RR73
220730  +3 1563  SV9QWC DF8QB 73
220745 +10 1563  DF8QB SP6FME JO90 (x2)
220945  +4  812  R9OAE DF8QB JO31 (x5)
221200  +0 1753  DF8QB DO1IJB JN48
221215  +6  812  R9OAE DF8QB JO31 (x2)
40m
UTC    dB Audio  Message
053700 +17 2596  HI3RRR DF8QB JO31 (x3)
053900 +10 2243  DK1HZ DF8QB -13 (x2)
053945  +3 2241  DF8QB DK1HZ 73
054115 +11 1817  OA4ENG DF8QB R-04 (x2)
054400 +11 2061  HK5OLL DF8QB R-15 (x5)
054630 +17 2595  HI3RRR DF8QB JO31 (x2)
20m
UTC    dB Audio  Message
202430 +19  599  W1AW/2 DF8QB JO31 (x3)
202615 -13 2038  DF8QB BG7BVI OL66
203000  +3 2102  EP2AES DF8QB JO31 (x4)
044130 -24 1751  R4AAR DF8QB JO31
044315 -13 1885  DF8QB R3KLE +13 (x2)
045200  +6 1244  DF8QB UA4FEN +08 (x2)
045500 -21 1514  DF8QB BG0FQU -15 (x2)

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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