DO4BOS — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO40

Receiver-side FT8 activity involving DO4BOS, decoded by SO8OO in southeastern Poland. 154 FT8 messages attributed to this token as transmitter, on 80m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-05 and 2026-10-23.

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 154 FT8 messages attributed to DO4BOS as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (99%), followed by 10 m (1%). Several six-hour UTC windows tied for the largest share (82%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

154
Messages attributed
7
UTC dates decoded
25
Active 15-min windows
-7 dB
Estimated median S/N

Bands

80m · 153 10m · 1
First attributed message: 2026-07-05
Last attributed message: 2026-10-23 20:23 UTC

Observed FT8 message patterns

Attributed sample
154 messages
Active dates
7 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-17 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 42, strong (≥ -8 dB) 91.

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 DO4BOS 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 DO4BOS

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
JO40 · 91 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
911 km (approx.)
Last such locator decoded
2026-10-23 20:20 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 UTCBandDO4BOS S/NCounterpartCounterpart S/NMsgsCapture
10-23 20:28 160m - / - OK1AR +8 / - 3 Partial capture
10-23 20:20 80m -8 / -11 9A2G +10 / -8 12 ✓ Full exchange observed
10-23 20:15 80m -15 / - OH5KNL +1 / -8 2 ✓ Closing observed
10-23 20:03 80m -7 / -2 DL5OAH +5 / - 5 ✓ Closing observed
10-23 20:00 80m - / -10 IZ2QPP +2 / - 3 ✓ Closing fragment
10-23 19:59 80m - / - HF5A +10 / - 2 Partial capture
10-23 19:59 80m - / -9 I8OHQ +8 / - 2 Partial capture
10-23 19:56 80m -9 / -18 DL5JMN +7 / -8 6 ✓ Full exchange observed
10-23 19:50 80m - / -17 DD0IPA -6 / - 7 ✓ Closing fragment
10-23 19:44 80m -9 / - IK1MJK -9 / +6 2 Partial capture
10-23 19:37 80m -12 / -14 IZ3GNG +16 / +2 6 ✓ Full exchange observed
10-23 19:30 80m -12 / - DH3UN +4 / - 3 ✓ Closing observed
10-23 19:06 80m - / -15 IK1MJK -8 / - 4 Partial capture
10-23 18:49 80m - / - DA6DNA -8 / - 3 Partial capture
10-23 18:43 80m -5 / -1 DK2NO +1 / -2 6 ✓ Full exchange observed
10-23 18:35 80m -1 / -15 OE5ABL +10 / -8 6 ✓ Full exchange observed
10-23 18:30 80m -1 / -11 SP9PLK +13 / -6 6 ✓ Full exchange observed
10-23 18:23 80m -1 / -8 DK7UY +3 / +4 6 ✓ Full exchange observed
10-23 18:20 80m -3 / -10 DL1UDO -1 / - 4 ✓ Closing observed
10-23 18:17 80m - / -10 OK1WCF +12 / - 3 ✓ Closing fragment
10-23 18:09 80m -11 / - DC1PM - / +6 3 ✓ Closing fragment
10-23 18:07 80m - / -6 DO2SBS -1 / - 3 ✓ Closing fragment
10-23 18:02 80m -16 / -3 ES2AJ +1 / +3 4 ✓ Full exchange observed
10-23 17:57 80m -13 / -15 DL6UM -3 / -5 6 ✓ Full exchange observed
10-23 17:57 80m - / -19 ES2AJ +8 / - 2 Partial capture
10-23 17:53 80m - / -19 DG3YEV +7 / - 2 ✓ Closing fragment
10-23 17:43 80m - / - OH5KNL +2 / - 3 Partial capture
10-23 17:36 80m - / -5 OK1AY +11 / - 3 ✓ Closing fragment
10-23 17:33 80m -1 / - TK/DH7SB - / -9 3 ✓ Closing fragment
10-23 17:33 80m - / -13 S58X +12 / - 3 ✓ Closing fragment
10-23 17:30 80m -2 / -5 DO7AGN -3 / -5 5 ✓ Full exchange observed
10-23 16:49 80m - / +3 DG6ITP +7 / - 3 ✓ Closing fragment
10-22 20:56 80m - / - SP3JHZ -1 / - 2 Partial capture
10-22 20:55 80m - / -21 DF1IH +6 / - 2 ✓ Closing fragment
10-22 20:51 80m -4 / - EI4JFB - / -12 2 ✓ Closing fragment
10-22 20:43 80m - / -4 SP9MOC -8 / - 2 Partial capture
10-22 19:34 80m - / -4 DK0KG -1 / - 9 ✓ Closing fragment
10-18 06:02 80m -19 / - MW7TTA - / - 5 Partial capture
10-18 05:49 80m -5 / -16 DM2GG -15 / - 5 ✓ Closing observed
10-18 05:48 80m - / -13 HB9ETN -24 / - 2 ✓ Closing fragment
10-18 05:43 80m - / +5 ON8WR -15 / - 3 ✓ Closing fragment
10-18 01:25 80m - / - DL/N0PNG -11 / - 5 Partial capture
10-18 01:24 80m - / - ON4MAP -9 / - 5 Partial capture
10-18 01:23 80m - / - F5MXH +1 / - 3 Partial capture
10-18 01:23 80m -2 / -9 R2AL +15 / -1 10 Partial capture
10-18 01:22 80m - / - RX3ASQ +2 / - 2 Partial capture
10-13 05:17 80m - / - F1MXE -6 / - 2 Partial capture
10-13 05:16 80m - / -9 IK4TVP +1 / - 3 Partial capture
10-13 05:16 80m - / - RN2F +6 / - 2 Partial capture
10-13 05:15 80m -2 / -19 EB3JT -12 / -15 6 Partial capture

Recent FT8 messages decoded at SO8OO

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

160m 
UTC    dB Audio  Message
202815  +5 1022  DO4BOS OK1AR JO60 (x3)
80m 
UTC    dB Audio  Message
200930 -24 1659  CQ DO4BOS JO40
201545 -15 2325  OH5KNL DO4BOS R-08
201600  +1 2225  DO4BOS OH5KNL RR73
202030  -9 1014  9A2G DO4BOS JO40
202115 +14 1015  DO4BOS 9A2G -11
202130 -17 1014  9A2G DO4BOS R-08
202145 +15 1015  DO4BOS 9A2G -11
202200  -9 1014  9A2G DO4BOS R-08
202215  +6 1015  DO4BOS 9A2G -11
202230  -5 1015  9A2G DO4BOS R-15
202245  +4 1014  DO4BOS 9A2G -11
202300  -3 1013  9A2G DO4BOS R-09
202315 +11 1015  DO4BOS 9A2G -11
202330  -5 1014  9A2G DO4BOS R-05
202345 +13 1015  DO4BOS 9A2G 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.

Explore CW reception at SO8OO

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