YB3BBF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia Most frequent locator attributed to this token: OI72

Receiver-side FT8 activity involving YB3BBF, decoded by SO8OO in southeastern Poland. 20 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-09-05.

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 20 FT8 messages attributed to YB3BBF as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (90%), followed by 20 m (10%). Most decodes (95%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (90%); the estimated median was -18 dB.

Overview

20
Messages attributed
4
UTC dates decoded
8
Active 15-min windows
-18 dB
Estimated median S/N

Bands

40m · 18 20m · 2
First attributed message: 2026-08-23
Last attributed message: 2026-09-05 22:57 UTC

Observed FT8 message patterns

Attributed sample
20 messages
Active dates
4 UTC dates
Estimated median S/N
-18 dB
Estimated 10th-90th percentile
-21 to -16 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 0.

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 YB3BBF 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 YB3BBF

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
OI72 · 13 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
10,874 km (approx.)
Last such locator decoded
2026-09-05 22:56 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 UTCBandYB3BBF S/NCounterpartCounterpart S/NMsgsCapture
09-10 19:10 80m - / - DJ7M +16 / - 3 Partial capture
09-05 22:56 40m -20 / - J38DX - / -16 2 Partial capture
09-01 22:36 40m - / -13 IR7MGGC -15 / - 2 Partial capture
08-30 13:26 10m - / - F1JPG -9 / - 2 Partial capture
08-29 22:59 40m - / -18 IR7MGGC -3 / - 3 Partial capture
08-27 22:56 40m - / -17 CN8NS -16 / - 2 Partial capture
08-26 23:10 20m - / -16 IR7MGGC -6 / - 2 Partial capture
08-26 23:00 20m - / -17 IR7MGGC -9 / - 2 Partial capture
08-24 22:34 40m -17 / - XU7AKP - / - 7 Partial capture
08-24 18:01 40m - / -13 II7MGBT -5 / - 2 Partial capture
08-24 17:58 40m - / -13 EA2AA -13 / - 7 Partial capture
08-24 17:38 40m -16 / - EG5DX -16 / -9 3 ✓ Closing observed
08-24 17:33 20m - / - EA2DR -6 / - 2 Partial capture
08-24 17:10 20m - / - EA7P 0 / - 2 Partial capture
08-23 22:55 40m -20 / -9 DF2RG -18 / -18 4 ✓ Full exchange observed
08-23 22:52 40m -19 / - HI3RRR - / -16 2 ✓ Closing fragment
08-23 00:03 20m - / -15 HC7AE -18 / - 4 Partial capture
08-21 23:18 40m - / -21 EA1AUO -9 / - 3 ✓ Closing fragment
08-21 23:13 40m - / -14 UT2PC -14 / - 2 ✓ Closing fragment
08-21 22:34 40m - / - DJ6GI -3 / - 3 Partial capture
08-21 22:31 40m - / -9 YT2YZ +2 / - 4 ✓ Closing fragment
08-21 22:29 40m - / - EW8AAC -14 / - 2 ✓ Closing fragment
08-20 20:59 40m - / -15 R3VA -8 / - 3 ✓ Closing fragment
08-12 18:52 80m - / - LA9GX +4 / - 5 Partial capture
08-11 17:37 20m - / - PD1ADA -17 / - 3 Partial capture
08-11 17:35 20m - / -18 R2BQM -6 / - 5 Partial capture
08-06 23:21 20m - / -15 IU7WET -9 / - 3 ✓ Closing fragment
08-05 22:35 40m - / -17 RK6ABM -10 / - 2 ✓ Closing fragment
07-22 23:05 40m - / -10 E72ET -16 / - 9 Partial capture
07-22 23:00 40m - / -10 DK9WI -14 / - 2 ✓ Closing fragment
07-22 16:02 40m - / - R7DX -18 / - 4 Partial capture
07-20 22:56 40m - / -4 LZ1ZF -14 / - 2 ✓ Closing fragment
07-19 23:21 40m - / -25 PD0IFI -9 / - 2 Partial capture
07-19 22:48 40m - / -14 RX3ASQ -18 / - 2 ✓ Closing fragment
07-19 22:45 40m - / -5 UD3T -14 / - 2 ✓ Closing fragment
07-14 23:17 40m - / -20 SV1HFE 0 / - 4 ✓ Closing fragment
07-12 16:36 40m - / - DL6EL -15 / - 4 Partial capture
07-11 17:20 40m - / -14 R2EC -11 / - 3 ✓ Closing fragment
07-10 08:47 20m - / - F6GCP -7 / - 5 Partial capture
07-10 05:59 20m - / - IK5PWQ -15 / - 4 Partial capture
07-09 17:30 40m - / -13 OE3DXA +2 / - 3 Partial capture
07-08 19:22 40m - / -14 UV1IX -10 / - 2 Partial capture
07-08 19:20 40m - / -11 DN6CC -17 / - 3 Partial capture
07-06 19:06 40m - / -3 DF8AA -9 / - 6 ✓ Closing fragment
07-05 21:43 20m - / -18 CR2WWA -6 / - 2 ✓ Closing fragment
07-05 20:37 40m - / 0 SN4WWA -16 / - 3 Partial capture
07-05 19:55 40m - / -17 TM2WWA -6 / - 2 Partial capture
07-05 19:54 40m - / - DL6NDN -14 / - 3 Partial capture
07-05 19:21 40m - / 0 SN4WWA -16 / - 3 Partial capture
07-05 19:07 40m - / - UF5F -15 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
185230  -1  744  YB3BBF LA9GX JO59 (x5)
191030 +13  426  YB3BBF DJ7M JN49 (x3)
40m 
UTC    dB Audio  Message
224030 -11 1040  YB3BBF M9DNC JO01
234045  +4 2872  YB3BBF IT9SVJ -17
224115 -13 1837  YB3BBF HB10GBT -12
225630 -16 2093  YB3BBF CN8NS -17 (x2)
225930  -3 1728  YB3BBF IR7MGGC -18 (x3)
193730 -14 2187  YB3BBF II7MGBR -17
223645 -15 1738  YB3BBF IR7MGGC -13 (x2)
223800 -17 1045  TC30AGU YB3BBF R-23
230600 -11 1609  YB3BBF SO100PKP -14
225600 -20 1048  J38DX YB3BBF OI72 (x2)
10m 
UTC    dB Audio  Message
113400 -10  634  YB3BBF CR2WWA RR73
123115 +11 2762  YB3BBF TM2WWA -14 (x2)
070245 -20 2221  YB3BBF RA5AK -17
132415  -7  759  YB3BBF F1JPG JN06 (x3)
20m 
UTC    dB Audio  Message
000400 -22 1432  YB3BBF HC7AE -15 (x3)
170415 -16 1123  IR7MGGC YB3BBF OI72
170800  -1 1360  YB3BBF EA7P IM76
170945 -17 1110  <...> YB3BBF OI72
171030  +0 1360  YB3BBF EA7P IM76 (x3)
173345  -7 2591  YB3BBF EA2DR IN83 (x2)
230000  -9 1018  YB3BBF IR7MGGC -17 (x4)
60m 
UTC    dB Audio  Message
175030 -21 1576  YB3BBF <...> -09

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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