OZ5BC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Denmark Most frequent locator attributed to this token: JO56

Receiver-side FT8 activity involving OZ5BC, decoded by SO8OO in southeastern Poland. 60 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-07-16 and 2026-08-23.

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 60 FT8 messages attributed to OZ5BC as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (73%), followed by 10 m (22%) and 20 m (5%). Several six-hour UTC windows tied for the largest share (62%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (62%); the estimated median was -14 dB.

Overview

60
Messages attributed
8
UTC dates decoded
14
Active 15-min windows
-14 dB
Estimated median S/N

Bands

40m · 44 20m · 3 10m · 13
First attributed message: 2026-07-16
Last attributed message: 2026-08-23 07:13 UTC

Observed FT8 message patterns

Attributed sample
60 messages
Active dates
8 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-19 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 37, strong (≥ -8 dB) 2.

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 OZ5BC 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 OZ5BC

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
JO56 · 32 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,022 km (approx.)
Last such locator decoded
2026-08-23 07:13 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 UTCBandOZ5BC S/NCounterpartCounterpart S/NMsgsCapture
08-29 13:31 20m - / - UA6YW +2 / - 2 Partial capture
08-29 13:22 40m - / -11 UR1CCT +12 / - 4 ✓ Closing fragment
08-23 15:04 40m - / - DA3W -19 / - 4 Partial capture
08-23 15:04 40m - / - HA1DSL -10 / - 2 Partial capture
08-23 15:03 40m - / - DF8MH -17 / - 5 Partial capture
08-23 15:03 40m - / +6 DK7ZT -15 / - 3 Partial capture
08-23 13:18 10m - / +3 IZ2BVJ -16 / - 2 ✓ Closing fragment
08-23 07:22 20m - / - F5HNQ +12 / - 3 Partial capture
08-23 07:12 20m - / - F5HNQ +15 / - 3 Partial capture
08-23 07:09 20m - / - LZ3CB +12 / - 2 Partial capture
08-23 07:08 20m - / - OD5KU +5 / - 5 Partial capture
08-03 16:38 20m - / -14 CT3MD -2 / - 4 Partial capture
08-03 12:36 20m - / -15 F4FSY -17 / - 2 Partial capture
08-03 05:50 40m - / -17 UR3CFC -8 / - 3 ✓ Closing fragment
08-03 05:45 40m - / -15 EU6KA -11 / - 4 ✓ Closing fragment
08-03 05:33 40m -14 / - F5LMJ - / -16 4 Partial capture
08-03 05:32 40m -14 / - EA1AHP - / -12 2 ✓ Closing fragment
08-03 05:31 40m - / -4 YO6LM -14 / - 2 Partial capture
08-03 05:28 40m -15 / - LY3BES - / -2 3 Partial capture
08-03 05:19 40m -18 / - LY3BES - / -2 7 Partial capture
08-03 05:18 40m - / - DB1TH +2 / - 3 Partial capture
08-03 05:18 40m - / - RV3YN -18 / - 2 Partial capture
08-03 05:15 40m -14 / - UX7QV - / -15 3 ✓ Closing fragment
08-03 05:09 40m - / -7 YO6LM -14 / - 2 Partial capture
08-03 05:08 40m - / - F5RRS -16 / - 4 Partial capture
08-03 05:06 40m -11 / - PY1ZV - / - 4 Partial capture
08-03 04:51 40m -14 / - VP2MAA - / -7 3 Partial capture
08-02 20:16 10m - / -1 EA8UP -8 / - 2 ✓ Closing fragment
08-02 06:03 40m - / - DF8RU -7 / - 2 Partial capture
08-02 05:55 40m - / - OE5ROR -12 / - 4 Partial capture
08-02 05:54 40m - / - DL9KM -9 / - 3 ✓ Closing fragment
08-01 19:37 20m - / -1 GJ0KYZ 0 / - 5 Partial capture
08-01 19:17 20m - / -7 ON3KJU -2 / - 2 ✓ Closing fragment
08-01 19:10 20m - / -12 EA5FZJ -8 / - 2 ✓ Closing fragment
07-31 13:25 20m - / - DL8TV -9 / - 3 Partial capture
07-30 06:07 20m - / +3 V31DL -13 / - 3 ✓ Closing fragment
07-30 05:57 20m - / - KH6M -16 / - 4 Partial capture
07-30 04:49 20m - / - RZ4FWA -12 / - 3 Partial capture
07-29 18:13 10m - / - OE7LVI -6 / - 2 Partial capture
07-29 18:10 10m - / +2 Z61DX 0 / - 2 ✓ Closing fragment
07-28 10:24 20m - / - F1IQH -19 / - 7 Partial capture
07-27 18:03 20m - / - M8KKH -2 / - 4 Partial capture
07-27 11:55 20m - / -10 GJ0KYZ -10 / - 2 Partial capture
07-27 08:17 10m - / -7 EA3ADX -5 / - 2 ✓ Closing fragment
07-27 06:18 20m - / - PE1NPS -14 / - 3 Partial capture
07-27 05:46 20m - / -15 F4LNM -13 / - 4 ✓ Closing fragment
07-26 17:30 40m - / +6 DL3JHK -8 / - 3 ✓ Closing fragment
07-26 17:25 40m - / -6 RC2DD -14 / - 3 ✓ Closing fragment
07-26 17:24 40m - / -14 SP7TF -12 / - 2 ✓ Closing fragment
07-26 16:56 20m - / - F5PEG -10 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
070930  +3 2700  OZ5BC OD5KU KM73
070930  +8 2353  OZ5BC LZ3CB KN32
071000  +9 2700  OZ5BC OD5KU KM73 (x2)
071230 +11 2845  OZ5BC F5HNQ IN98 (x2)
071315 -22  900  CQ OZ5BC JO56
071330 +16 2845  OZ5BC F5HNQ IN98
071700 -17 1095  OZ5BC F1IBU R-11
072230 +13 2845  OZ5BC F5HNQ IN98 (x3)
072545 -11 2454  OZ5BC UA3LRN KO64
133130  +6  893  OZ5BC UA6YW LN04 (x2)
40m 
UTC    dB Audio  Message
150400 -14 1906  OZ5BC DK7ZT +06
150400 -19 1784  OZ5BC DF8MH JO33
150430 -10  874  OZ5BC HA1DSL JN86
150430 -15 1906  OZ5BC DK7ZT +06
150430 -19 1783  OZ5BC DF8MH JO33
150430 -18 2164  OZ5BC DA3W JO52
150500 -14 1221  OZ5BC DF8MH JO33 (x2)
150600 -20 2163  OZ5BC DA3W JO52 (x3)
132230 +10  862  OZ5BC UR1CCT KN69 (x4)
10m 
UTC    dB Audio  Message
084645  +1  961  OZ5BC F5ADE R+12 (x2)
081330  -9  762  OZ5BC F1MWV 73
081730  -6  891  OZ5BC EA3ADX -07 (x2)
084430 -14  892  OZ5BC DK4RH R-16
181045  -1  775  OZ5BC Z61DX +02 (x2)
181245 -19 1837  OZ5BC YT3PL KN04
181315  -6 2412  OZ5BC OE7LVI JN57 (x2)
201615  -3  883  OZ5BC EA8UP -01 (x2)
131830 -15  884  OZ5BC IZ2BVJ R+03 (x2)
80m 
UTC    dB Audio  Message
194800  +2  846  OZ5BC SM7JKW JO65 (x5)

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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