OK3MB — 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: Czech Republic Most frequent locator attributed to this token: JO70

Receiver-side FT8 activity involving OK3MB, decoded by SO8OO in southeastern Poland. 2,032 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-08-20 and 2026-10-18.

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 2,032 FT8 messages attributed to OK3MB as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (89%), followed by 20 m (11%). Most decodes (57%) 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 -9.9 dB.

Overview

2,032
Messages attributed
18
UTC dates decoded
143
Active 15-min windows
-9.9 dB
Estimated median S/N

Bands

First attributed message: 2026-08-20
Last attributed message: 2026-10-18 11:30 UTC

Observed FT8 message patterns

Attributed sample
2,032 messages
Active dates
18 UTC dates
Estimated median S/N
-9.9 dB
Estimated 10th-90th percentile
-18 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 413, moderate (-15 to -9 dB) 725, strong (≥ -8 dB) 894.

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 OK3MB

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
JO70 · 1,341 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
487 km (approx.)
Last such locator decoded
2026-10-18 11:28 UTC

Other locator fields attributed to this token: JN65 (2).

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 UTCBandOK3MB S/NCounterpartCounterpart S/NMsgsCapture
10-18 11:28 40m -17 / - G4TTO - / -7 6 Partial capture
10-18 11:25 40m -13 / - MW3FLI - / - 4 Partial capture
10-18 07:52 40m - / -11 R2AL -11 / - 3 ✓ Closing fragment
10-18 07:49 40m -17 / - M0DSK - / - 3 Partial capture
10-18 07:41 40m -13 / -13 YL3AUR -14 / -8 4 ✓ Full exchange observed
10-18 07:30 40m -10 / - MI0NWA - / - 4 Partial capture
10-18 07:28 40m -10 / -1 PA3T -8 / +9 4 ✓ Full exchange observed
10-18 07:23 40m -10 / - EC5M - / - 4 Partial capture
10-18 07:19 40m -1 / - F1PSX - / - 2 Partial capture
10-18 07:16 40m -5 / - SQ1OOP - / - 4 Partial capture
10-18 07:12 40m -8 / - ON4CAS - / - 2 ✓ Closing fragment
10-18 07:09 40m -10 / - MI0NWA - / - 4 Partial capture
10-18 07:06 40m -9 / - F5PJG - / - 2 Partial capture
10-18 07:01 40m -10 / +3 OM3WFH +4 / - 3 ✓ Closing observed
10-18 06:57 40m -8 / - LA7DMA - / +3 3 ✓ Closing fragment
10-18 06:50 40m -15 / - EC5M - / - 3 Partial capture
10-18 06:45 40m -15 / -5 EU4BE -8 / -10 5 ✓ Full exchange observed
10-18 06:42 40m - / +5 GJ0KYZ -5 / - 4 ✓ Closing fragment
10-18 06:41 40m -8 / +1 ON5EA -10 / -7 3 ✓ Full exchange observed
10-18 06:40 40m -8 / - SM7YLS - / - 2 Partial capture
10-18 06:36 40m -4 / - EA6BH - / - 4 Partial capture
10-18 06:34 40m -16 / - DG4IT - / - 5 Partial capture
10-18 06:33 40m -12 / - SM4EMO - / -14 2 ✓ Closing fragment
10-18 06:30 40m -15 / - ON3BEN - / - 2 ✓ Closing fragment
10-18 06:27 40m -19 / - SM4EMO - / - 4 Partial capture
10-18 06:25 40m -8 / - IX1ABE - / - 4 Partial capture
10-18 06:09 40m -5 / - YO6BLU - / - 3 Partial capture
10-18 06:08 40m -3 / - EB3DBR - / - 2 ✓ Closing fragment
10-18 06:06 40m -8 / - EA5D - / - 2 ✓ Closing fragment
10-18 06:03 40m -12 / - OE1AES - / - 5 Partial capture
10-18 06:02 40m -10 / -12 OE3PBS 0 / -19 5 ✓ Full exchange observed
10-18 06:00 40m -5 / - F4CTJ - / -2 3 ✓ Closing fragment
10-18 05:58 40m -8 / -15 IW5BTT -16 / -13 5 ✓ Full exchange observed
10-18 05:56 40m -3 / - RG3M - / - 2 Partial capture
10-18 05:51 40m -4 / - MW9LQA - / -17 6 Partial capture
10-18 05:50 40m - / -7 IK2VFR/P -10 / - 2 ✓ Closing fragment
10-18 05:47 40m -4 / -8 RW3WX -10 / -12 5 ✓ Full exchange observed
10-18 05:45 40m -7 / -10 G8KHF -16 / -3 5 ✓ Full exchange observed
10-18 05:41 40m -5 / -1 F6DZU -6 / +7 5 ✓ Full exchange observed
10-18 05:40 40m -16 / - YO8RSL - / - 2 Partial capture
10-18 05:37 40m -4 / - IZ6BUV - / -15 3 ✓ Closing fragment
10-18 05:34 40m - / -5 R2PX -7 / - 3 ✓ Closing fragment
10-18 05:33 40m - / -15 YO6LM -1 / - 2 ✓ Closing fragment
10-17 19:20 40m - / -21 R3ZBR +5 / - 3 ✓ Closing fragment
10-17 19:15 40m -8 / -13 R9CS/P -6 / - 4 Partial capture
10-17 19:12 40m -8 / - UI6O - / - 2 Partial capture
10-17 19:06 40m - / -4 OS4K -10 / - 3 Partial capture
10-17 19:04 40m -7 / -15 R3KGN -12 / -19 7 ✓ Full exchange observed
10-17 19:02 40m -7 / - EX7CQ - / - 4 Partial capture
10-17 18:59 40m -7 / - R1TBG -3 / - 5 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
074945 -13 1974  M0DSK OK3MB JO70 (x2)
075200  -8  968  OK3MB R2AL KO85 (x3)
112545 -13 2204  MW3FLI OK3MB JO70 (x4)
112815 -17 1818  G4TTO OK3MB JO70 (x6)
20m
UTC    dB Audio  Message
130830  -2 1574  CQ OK3MB JO70 (x2)
130930 -10 1573  M8IRI OK3MB JO70
131030  -9 1573  CQ OK3MB JO70
133445 -11 1237  OK3MB RA9CUU -17 (x5)
134845  -8 1568  OK3MB G1LQT IO70
143015 -12  769  OK3MB OH3MB KP20
150145  -1 1839  OK3MB M9UTD -15 (x2)
152245 -10 2021  OK3MB G3ROY -10 (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

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