DO1CB — 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: JO60

Receiver-side FT8 activity involving DO1CB, decoded by SO8OO in southeastern Poland. 255 FT8 messages attributed to this token as transmitter, on 80m, across 7 UTC dates in the available aggregate history. Observed between 2026-10-03 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 255 FT8 messages attributed to DO1CB 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 (100%). Several six-hour UTC windows tied for the largest share (53%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (91%); the estimated median was +4 dB.

Overview

255
Messages attributed
7
UTC dates decoded
17
Active 15-min windows
+4 dB
Estimated median S/N

Bands

First attributed message: 2026-10-03
Last attributed message: 2026-10-21 16:26 UTC

Observed FT8 message patterns

Attributed sample
255 messages
Active dates
7 UTC dates
Estimated median S/N
+4 dB
Estimated 10th-90th percentile
-8 to +9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 20, strong (≥ -8 dB) 231.

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 DO1CB

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 · 114 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
628 km (approx.)
Last such locator decoded
2026-10-21 16:25 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 UTCBandDO1CB S/NCounterpartCounterpart S/NMsgsCapture
10-21 16:26 80m +7 / - DO9FR - / +4 2 ✓ Closing fragment
10-21 16:22 80m 0 / -22 R6BH -18 / -11 10 Partial capture
10-21 16:19 80m +2 / - RD9FC -13 / -20 4 Partial capture
10-21 16:15 80m +6 / - DK5OPA -20 / -14 3 ✓ Closing observed
10-21 16:14 80m 0 / - RC9WC - / -17 2 ✓ Closing fragment
10-21 16:09 80m +7 / - TA4SSK - / - 2 Partial capture
10-21 16:07 80m +4 / - OD5ZZ - / - 2 Partial capture
10-21 16:04 80m -12 / +6 OK1AY +13 / - 3 ✓ Closing observed
10-21 04:54 80m +9 / -6 N1WI -15 / -14 5 ✓ Full exchange observed
10-21 04:51 80m -4 / +6 ES1BH -8 / -8 4 ✓ Full exchange observed
10-21 04:49 80m -9 / -17 EA5JKB -15 / -22 2 Partial capture
10-21 04:47 80m -1 / -14 VE2LBI -16 / -12 4 ✓ Full exchange observed
10-21 04:43 80m +7 / - DO1OAS -11 / -19 8 Partial capture
10-21 04:40 80m +6 / - DO1FZL -4 / +4 4 ✓ Closing observed
10-21 04:39 80m +3 / - F1PBZ - / -2 2 ✓ Closing fragment
10-21 04:36 80m -2 / - SM7WNM - / -7 5 ✓ Closing fragment
10-18 16:55 80m +10 / - E79KO - / - 2 Partial capture
10-18 16:51 80m +15 / - E79KO - / - 2 Partial capture
10-18 16:47 80m +6 / - R4FDK - / - 2 Partial capture
10-18 16:43 80m +6 / 0 F4EWK -5 / +4 5 Partial capture
10-18 16:41 80m +3 / -16 R3VE -6 / -11 5 ✓ Full exchange observed
10-18 16:40 80m +7 / -5 PA7ZZ -6 / 0 5 ✓ Full exchange observed
10-18 16:38 80m +1 / -18 RU3KA -8 / -17 6 ✓ Full exchange observed
10-18 16:37 80m +4 / - DO5AX -17 / -5 3 ✓ Closing observed
10-18 05:44 80m - / -8 DL3HN -8 / - 4 ✓ Closing fragment
10-18 05:39 80m -5 / -4 F1MXE -8 / -1 6 ✓ Full exchange observed
10-18 05:38 80m -7 / - DO5PAP - / -1 2 ✓ Closing fragment
10-18 05:38 80m -4 / -6 F4GUK +3 / +7 7 ✓ Full exchange observed
10-13 18:55 80m +6 / - DO2BBC +1 / +5 4 ✓ Closing observed
10-13 18:54 80m +9 / - EA4DL -24 / -21 4 ✓ Closing observed
10-13 18:51 80m +8 / 0 DK0RMR +3 / +7 5 ✓ Full exchange observed
10-13 18:49 80m +6 / - RA7E/P - / -23 3 Partial capture
10-13 18:47 80m +5 / - LA2JKA - / - 2 Partial capture
10-13 18:43 80m -7 / - DA6WM -2 / - 5 ✓ Full exchange observed
10-13 18:42 80m -13 / - UD8D - / - 2 Partial capture
10-13 18:40 80m -12 / - DL9GF -24 / -10 4 ✓ Closing observed
10-12 04:53 80m -1 / - 9H1ES - / - 2 Partial capture
10-12 04:50 80m -7 / 0 T77RN -1 / +1 5 ✓ Full exchange observed
10-12 04:45 80m +8 / +3 IZ8XXE +3 / 0 3 ✓ Full exchange observed
10-12 04:43 80m +10 / -16 UT0CK -12 / -5 4 ✓ Full exchange observed
10-12 04:41 80m +6 / - OZ2LC - / - 3 Partial capture
10-12 04:39 80m +4 / - LA5ZUA - / -16 2 ✓ Closing fragment
10-12 04:36 80m -5 / -15 M0IOY -4 / -15 7 ✓ Full exchange observed
10-12 04:34 80m -10 / -7 SP5KG +4 / - 3 ✓ Closing observed
10-12 04:32 80m -4 / +7 G8TJQ 0 / +7 6 ✓ Full exchange observed
10-12 04:31 80m +2 / - IU2THY -1 / -1 4 ✓ Full exchange observed
10-07 19:22 80m +4 / +1 G7RHF -15 / -14 6 ✓ Full exchange observed
10-07 19:22 80m +4 / -18 R1BQR -14 / -22 25 ✓ Full exchange observed
10-07 19:21 80m +4 / +1 DO5PY +2 / -3 3 ✓ Full exchange observed
10-07 19:17 80m +3 / - 8S2A - / -15 5 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m
UTC    dB Audio  Message
162015  +3 1990  RD9FC DO1CB -20
162045  +7 1989  CQ DO1CB JO60 (x2)
162200  -1 1990  R6BH DO1CB JO60
162215 -18 1801  DO1CB R6BH -22
162230  +0 2273  R6BH DO1CB R-11
162245 -18 1801  DO1CB R6BH -22
162300  -2 2273  R6BH DO1CB R-11
162315 -18 1801  DO1CB R6BH -22
162330  -3 2273  R6BH DO1CB R-11 (x4)
162600  +8 2273  DO9FR DO1CB R+04 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee