EA1BCK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Spain Most frequent locator attributed to this token: IN73

Receiver-side FT8 activity involving EA1BCK, decoded by SO8OO in southeastern Poland. 299 FT8 messages attributed to this token as transmitter, on 80m, 20m, 10m, across 33 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-16.

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 299 FT8 messages attributed to EA1BCK as the transmitting token by decoded message structure across 33 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (87%), followed by 80 m (9%) and 10 m (4%). Most decodes (91%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11.2 dB.

Overview

299
Messages attributed
33
UTC dates decoded
68
Active 15-min windows
-11.2 dB
Estimated median S/N

Bands

80m · 27 20m · 261 10m · 11
First attributed message: 2026-06-06
Last attributed message: 2026-09-16 22:33 UTC

Observed FT8 message patterns

Attributed sample
299 messages
Active dates
33 UTC dates
Estimated median S/N
-11.2 dB
Estimated 10th-90th percentile
-20 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 65, moderate (-15 to -9 dB) 156, strong (≥ -8 dB) 78.

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 EA1BCK 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 EA1BCK

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
IN73 · 234 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
2,150 km (approx.)
Last such locator decoded
2026-09-16 22:33 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 UTCBandEA1BCK S/NCounterpartCounterpart S/NMsgsCapture
09-16 22:32 80m -24 / - R2GCV - / - 2 Partial capture
09-15 22:10 80m - / -6 EA1RT -16 / - 2 Partial capture
09-02 21:42 40m - / - F5PBG -3 / - 2 Partial capture
09-02 21:39 40m - / -13 EA5FD 0 / - 4 ✓ Closing fragment
08-26 15:55 10m - / 0 CT3MD -6 / - 2 ✓ Closing fragment
08-25 18:09 20m -11 / - UA4FEN +7 / - 2 ✓ Closing observed
08-25 18:04 20m -10 / -24 9K2MP -10 / - 5 ✓ Closing observed
08-21 18:43 20m -5 / -9 BV2NF -10 / -8 6 Partial capture
08-14 16:36 20m -15 / - ES1BH - / - 5 Partial capture
08-13 21:05 80m -14 / - SV9MBH - / - 3 Partial capture
08-13 20:57 80m -10 / - SV9MBH - / - 2 Partial capture
08-13 20:36 80m - / -4 F5MYK -14 / - 2 Partial capture
08-13 20:35 80m - / -14 YL3BU -6 / - 2 ✓ Closing fragment
08-13 20:25 80m -20 / - D2UY - / - 4 Partial capture
08-13 20:20 80m -15 / - D2UY - / - 5 Partial capture
08-12 07:26 20m - / -7 RX3ASQ -17 / - 2 ✓ Closing fragment
08-06 10:48 10m - / -2 5B4AMX -20 / - 2 ✓ Closing fragment
08-03 21:03 20m -14 / - 9K2YM - / - 2 Partial capture
08-01 20:43 20m -14 / - UB3ADO/P - / - 5 Partial capture
07-31 18:34 20m -11 / - JT1BZ - / - 3 Partial capture
07-31 18:27 20m -12 / - BG8TFN - / - 5 Partial capture
07-31 18:25 20m -13 / - SP9LS - / -8 3 ✓ Closing fragment
07-31 18:22 20m -11 / - HA8RC - / -4 4 ✓ Closing fragment
07-31 18:21 20m -8 / - BD8ELZ - / -12 2 ✓ Closing fragment
07-31 17:52 20m -13 / - JT1BZ - / - 8 Partial capture
07-31 17:46 20m -19 / - AP2TN - / - 4 Partial capture
07-28 18:27 20m -16 / - 5N0YEN - / - 3 Partial capture
07-27 20:08 20m -5 / - TK4US - / - 4 Partial capture
07-27 20:05 20m -3 / - JH5AVM - / - 5 Partial capture
07-24 16:23 20m -16 / - FK8HA - / - 2 Partial capture
07-24 10:26 10m - / -12 TK5K -6 / - 2 ✓ Closing fragment
07-23 18:10 20m -12 / - VU4R - / - 9 Partial capture
07-23 17:36 20m -8 / - VR2VHI - / - 6 Partial capture
07-23 17:27 20m -16 / - DS1VAA - / - 6 Partial capture
07-23 17:17 20m -7 / - T77WD - / - 9 Partial capture
07-21 20:57 80m -14 / - EW8CW - / - 2 Partial capture
07-02 21:32 20m -2 / - EW2ZC - / -16 4 ✓ Closing fragment
06-29 16:57 20m -18 / - <...> - / - 3 Partial capture
06-29 16:53 20m -8 / - TJ1GD/P - / - 2 Partial capture
06-28 21:30 20m -14 / - EP2ATA - / - 7 Partial capture
06-28 21:28 20m -11 / - HS0ZOY - / -10 3 ✓ Closing fragment
06-28 21:19 20m -12 / - <...> - / -13 6 Partial capture
06-28 21:11 20m -10 / - BG7BMG - / -8 13 ✓ Closing fragment
06-28 21:08 20m -12 / - VR2VAZ - / -15 3 Partial capture
06-28 21:03 20m -10 / - HL5BPF - / -8 10 ✓ Closing fragment
06-28 21:00 20m -14 / - VU3OSA - / -18 4 ✓ Closing fragment
06-27 20:36 20m -15 / - BV7RR - / - 2 Partial capture
06-27 20:23 20m - / -4 UA9QFF -18 / - 4 ✓ Closing fragment
06-25 21:09 20m -9 / - BI8EJM - / -23 3 ✓ Closing fragment
06-24 21:36 20m -20 / - PZ5TW - / - 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
203615 -11 2504  EA1BCK F5MYK IN97 (x2)
204515  +0 1307  EA1BCK OK1ALF RRR
205730  -9 2234  SV9MBH EA1BCK IN73 (x5)
215530  +2  744  EA1BCK TK/4O7CC -14
215700  -3  804  EA1BCK RR73; SP7AH <...> +00
221030 -14 1064  EA1BCK II6IGTO -12
221030 -16 2435  EA1BCK EA1RT -06 (x2)
223230 -24 2344  R2GCV EA1BCK IN73 (x2)
40m 
UTC    dB Audio  Message
213930  +0 2744  EA1BCK EA5FD IM99 (x4)
214200  -1 2428  EA1BCK F5PBG IN78 (x2)
10m 
UTC    dB Audio  Message
102615  -3  497  EA1BCK TK5K -12 (x2)
102745 -10 2627  EA1BCK R2EA -16
104800 -18 1902  EA1BCK 5B4AMX -02 (x2)
155515  -2  904  EA1BCK CT3MD +00 (x2)
20m 
UTC    dB Audio  Message
163800 -14 2398  ES1BH EA1BCK IN73 (x2)
184300  -6 2197  BV2NF EA1BCK R-08 (x4)
184815 -10 2976  EA1BCK BV2NF -09
184830  -9 2198  BV2NF EA1BCK R-11
180445 -10 1910  9K2MP EA1BCK IN73
180500  -7 1080  EA1BCK 9K2MP -24 (x2)
180545 -10 1910  9K2MP EA1BCK 73
180600 -12 1080  EA1BCK 9K2MP 73
180900  +7 1910  EA1BCK UA4FEN RR73
180915 -11 1910  UA4FEN EA1BCK 73

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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