DM3YBN — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO60

Receiver-side FT8 activity involving DM3YBN, decoded by SO8OO in southeastern Poland. 718 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 48 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-20.

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 718 FT8 messages attributed to DM3YBN as the transmitting token by decoded message structure across 48 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 40 m (39%) and 80 m (2%). Most decodes (73%) fell within the six-hour window 07:00-13:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

718
Messages attributed
48
UTC dates decoded
135
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 15 40m · 282 20m · 421
First attributed message: 2026-06-07
Last attributed message: 2026-09-20 12:42 UTC

Observed FT8 message patterns

Attributed sample
718 messages
Active dates
48 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-20 to -2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 207, moderate (-15 to -9 dB) 251, strong (≥ -8 dB) 260.

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 DM3YBN 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 DM3YBN

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
JO60 · 374 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
628 km (approx.)
Last such locator decoded
2026-09-20 12:41 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 UTCBandDM3YBN S/NCounterpartCounterpart S/NMsgsCapture
09-20 12:42 40m -8 / +10 DH0TG -15 / +4 3 Partial capture
09-20 12:39 40m 0 / - OE4OIW - / - 4 Partial capture
09-20 12:38 40m -4 / - DH0TG - / - 2 Partial capture
09-20 12:36 40m -8 / - DF2JK - / -1 4 ✓ Closing fragment
09-20 12:34 40m -8 / - DJ9MA - / - 3 Partial capture
09-20 12:31 40m -6 / - PD1HD - / -2 6 Partial capture
09-20 12:28 40m +7 / - M7HET - / - 3 Partial capture
09-20 12:26 40m -7 / +1 OH3MB -16 / +1 5 ✓ Full exchange observed
09-20 12:25 40m -9 / - ON8WR - / -5 3 ✓ Closing fragment
09-16 15:19 40m 0 / +5 I4BUQ 0 / +3 5 ✓ Full exchange observed
09-16 15:18 40m -7 / - R8LB - / - 2 Partial capture
09-16 15:15 40m -5 / - OL900JAR - / 0 2 Partial capture
09-16 15:11 40m -5 / - DG1KSA - / -7 2 ✓ Closing fragment
09-16 15:10 40m -2 / - SM6XVI - / -9 2 Partial capture
09-16 14:58 40m -4 / - IU2SLI - / +3 2 ✓ Closing fragment
09-16 14:55 40m +2 / -7 DL3IAK -13 / - 4 Partial capture
09-16 14:53 40m -3 / - LA2GCA -15 / - 2 ✓ Closing observed
09-16 14:48 40m -6 / - PA3MVD - / -7 4 ✓ Closing fragment
09-16 14:47 40m -6 / - OZ5AGJ - / -3 2 Partial capture
09-16 14:39 40m -8 / - ON1DGN - / +10 2 ✓ Closing fragment
09-16 14:37 40m -1 / -5 G0RVY -8 / +3 5 ✓ Full exchange observed
09-16 14:36 40m -7 / -4 DM2COL -4 / 0 5 ✓ Full exchange observed
09-16 14:33 40m -5 / -5 OE5AMR +2 / - 3 ✓ Closing observed
09-16 14:32 40m +3 / - DK2SW - / - 2 ✓ Closing fragment
09-16 14:28 40m -4 / - DL4KK - / -22 6 ✓ Closing fragment
09-16 14:24 40m -8 / - G3VSH - / -13 4 Partial capture
09-16 14:22 40m +3 / +5 HB9ELE +1 / +8 5 ✓ Full exchange observed
09-16 14:20 40m +1 / - 9A5AGY - / - 3 Partial capture
09-15 15:40 40m -9 / - RA9CUU - / - 3 Partial capture
09-15 15:34 40m -3 / - SH7KAT - / - 2 Partial capture
09-13 15:47 40m -6 / - SA7CHI - / - 4 Partial capture
09-04 09:15 40m +1 / - DF9HT/P -15 / +4 4 ✓ Closing observed
09-04 09:12 40m -6 / - ON5LC - / +2 3 ✓ Closing fragment
09-03 15:04 40m -7 / +2 HG0NPJ -3 / -1 4 ✓ Full exchange observed
09-03 14:58 40m 0 / - <...> - / -7 4 Partial capture
09-01 14:33 40m +2 / -5 DL7UKM -1 / -4 9 ✓ Full exchange observed
09-01 08:58 40m -8 / -11 IZ2FOS -15 / - 5 ✓ Full exchange observed
09-01 08:57 40m -7 / - IZ4AIF - / - 2 Partial capture
08-31 09:06 20m - / -3 IK5EEA -1 / - 5 ✓ Closing fragment
08-28 12:51 40m -8 / - DJ6OI - / +1 3 ✓ Closing fragment
08-28 12:50 40m -6 / - DL7UKM - / - 2 Partial capture
08-28 12:09 20m - / +1 MM3RCR +11 / - 2 ✓ Closing fragment
08-28 09:16 20m - / -1 IS0LBE +7 / - 3 Partial capture
08-28 09:12 20m - / -4 F6EKI +5 / - 3 ✓ Closing fragment
08-26 08:49 20m - / -6 M6LND -2 / - 2 ✓ Closing fragment
08-25 19:54 20m - / -15 HS0ZOY -4 / - 3 ✓ Closing fragment
08-25 14:47 40m +6 / - DF4JY - / -14 8 ✓ Closing fragment
08-25 14:46 40m -6 / - <...> - / -10 2 Partial capture
08-25 14:44 40m -4 / - M9LCD - / - 2 Partial capture
08-25 14:35 20m - / - MW7RHR -2 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
123430  -9 1534  DJ9MA DM3YBN JO60 (x2)
123600 -11 1402  DF2JK DM3YBN JO60 (x4)
123845  -3 2187  DH0TG DM3YBN JO60 (x2)
123945  +2  559  OE4OIW DM3YBN JO60 (x4)
124200 -16 2187  DM3YBN DH0TG +10 (x2)
124245  -8 2188  DH0TG DM3YBN R+04
20m 
UTC    dB Audio  Message
151945  -4 1707  DM3YBN SM0FVI/3 +02
091200  +8 1560  DM3YBN F6EKI -04 (x3)
091645 +11 1822  DM3YBN IS0LBE -01 (x3)
120915 +11 2603  DM3YBN MM3RCR +01 (x2)
121215 -12 1452  DM3YBN RA9ACA RR73
090615  +7 1077  DM3YBN IK5EEA -03 (x5)
80m 
UTC    dB Audio  Message
184445 -18 1183  HB3YOR DM3YBN JO60
184615 -17 2403  F1PBZ DM3YBN JO60 (x2)
184700  -2 2403  DM3YBN F1PBZ +06
184715 -18 2403  F1PBZ DM3YBN R+00
184730  -5 2403  DM3YBN F1PBZ RR73
184745 -20 2403  F1PBZ DM3YBN 73
184800  +2 2404  DM3YBN DK7ZT -23 (x2)
184845 -19 2403  DK7ZT DM3YBN R+07
184900  -3 2403  DM3YBN DK7ZT RR73
184915 -23 2403  DK7ZT DM3YBN 73
185315  -3  405  DM3YBN DO9FR -13 (x3)
10m 
UTC    dB Audio  Message
145315 -19 1376  DM3YBN M9PCA RR73
145630 -19 1830  DM3YBN SM5MRW 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.

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