SP9DB — 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: Poland Most frequent locator attributed to this token: JO84

Receiver-side FT8 activity involving SP9DB, decoded by SO8OO in southeastern Poland. 489 FT8 messages attributed to this token as transmitter, on 60m, 40m, across 13 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-09-15.

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 489 FT8 messages attributed to SP9DB as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (95%), followed by 40 m (5%). Several six-hour UTC windows tied for the largest share (99%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (61%); the estimated median was -10 dB.

Overview

489
Messages attributed
13
UTC dates decoded
41
Active 15-min windows
-10 dB
Estimated median S/N

Bands

60m · 464 40m · 25
First attributed message: 2026-08-13
Last attributed message: 2026-09-15 17:06 UTC

Observed FT8 message patterns

Attributed sample
489 messages
Active dates
13 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-14 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 297, strong (≥ -8 dB) 168.

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 SP9DB 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 SP9DB

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
JO84 · 264 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
603 km (approx.)
Last such locator decoded
2026-08-27 11:09 UTC

Other locator fields attributed to this token: JN99 (13).

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 UTCBandSP9DB S/NCounterpartCounterpart S/NMsgsCapture
10-23 17:37 60m - / - OE3DXA +15 / - 2 Partial capture
10-23 17:26 60m - / -25 HA8RC -12 / - 2 ✓ Closing fragment
10-23 17:23 60m - / +1 9A2G -5 / - 2 ✓ Closing fragment
10-23 17:11 60m - / -5 HG2DX +8 / - 2 ✓ Closing fragment
10-23 17:02 60m - / -12 SP9JZU -1 / - 3 ✓ Closing fragment
10-23 16:56 60m - / -23 OE9HGV -6 / - 4 Partial capture
10-23 16:38 60m - / -12 DK3GI +10 / - 2 ✓ Closing fragment
10-23 16:34 60m - / +1 SP2EWQ -4 / - 2 ✓ Closing fragment
10-23 16:26 60m - / -16 SP6IYR 0 / - 2 ✓ Closing fragment
10-23 16:22 60m - / 0 HG2DX +4 / - 2 Partial capture
10-23 16:19 60m - / -16 OM5GU -12 / - 2 ✓ Closing fragment
10-23 16:15 60m - / -6 SP6U -16 / - 2 Partial capture
10-23 16:13 60m - / -13 DL5MG -9 / - 2 ✓ Closing fragment
10-08 16:53 60m - / -19 S58WW 0 / - 3 ✓ Closing fragment
10-08 16:36 60m - / -21 F5PZT -1 / - 6 ✓ Closing fragment
09-17 16:36 60m - / - OK8DCC 0 / - 5 Partial capture
09-16 16:12 60m - / -10 DL4KSD -5 / - 5 ✓ Closing fragment
09-12 17:58 60m - / -25 DL7UKM -5 / - 3 ✓ Closing fragment
09-12 17:53 60m - / -14 DL8MKG +2 / - 3 ✓ Closing fragment
08-30 09:49 20m - / -15 ON5JDB -1 / - 2 ✓ Closing fragment
08-27 19:15 60m -8 / +7 SA6DST -15 / -6 5 ✓ Full exchange observed
08-27 19:11 60m -11 / -10 SM5UNR -2 / -6 6 ✓ Full exchange observed
08-27 19:07 60m 0 / -9 SQ7LQT -2 / -5 4 ✓ Full exchange observed
08-27 19:04 60m -5 / -20 ON7KEI -17 / - 7 ✓ Closing observed
08-27 19:03 60m -2 / -11 DL6RS -14 / -5 5 ✓ Full exchange observed
08-27 19:02 60m -9 / -12 IK3/UY7LA -3 / -8 3 ✓ Full exchange observed
08-27 19:00 60m -8 / -8 YO6LM +3 / -6 7 ✓ Full exchange observed
08-27 11:16 40m - / -17 HA3HM -14 / - 2 ✓ Closing fragment
08-27 11:05 40m -13 / +2 SP5IDR -17 / -8 8 ✓ Full exchange observed
08-27 11:03 40m -17 / 0 SQ9SET -8 / - 3 ✓ Closing observed
08-26 19:04 60m -12 / -10 9A5WA -4 / -7 6 ✓ Full exchange observed
08-26 19:01 60m -13 / -5 SP6JKE -10 / -6 6 ✓ Full exchange observed
08-26 19:01 60m -12 / -8 DM2HW -19 / -10 7 ✓ Full exchange observed
08-26 18:58 60m -12 / - LA1PHA - / -8 4 ✓ Closing fragment
08-26 18:56 60m -10 / - OE5YCP - / -7 4 ✓ Closing fragment
08-26 18:53 60m -9 / - DL1WU - / -7 3 ✓ Closing fragment
08-26 18:50 60m -7 / - <...> - / -5 3 ✓ Closing fragment
08-26 18:43 40m -8 / -10 PD1AQL -8 / - 6 Partial capture
08-26 18:40 40m -12 / - DL9MY 0 / -6 3 Partial capture
08-26 18:39 40m -6 / - PD4RJ -15 / -5 3 ✓ Closing observed
08-26 18:38 40m - / - 9A4ZM 0 / - 3 Partial capture
08-26 18:37 40m -11 / -18 PE1NPS -8 / -8 5 ✓ Full exchange observed
08-26 18:33 40m -11 / -16 UI6O -10 / -5 9 ✓ Full exchange observed
08-26 18:30 40m -7 / -2 SQ9BDB -5 / -4 7 ✓ Full exchange observed
08-26 18:27 40m - / -19 EU6UE -9 / - 3 ✓ Closing fragment
08-25 19:34 60m - / +1 DL7JLC -7 / - 2 ✓ Closing fragment
08-25 19:28 60m -10 / - G4MHJ - / - 5 Partial capture
08-25 19:25 60m -6 / -19 9A6OY -9 / -6 7 ✓ Full exchange observed
08-25 19:23 60m -6 / -2 SQ9LOJ -3 / -5 5 ✓ Full exchange observed
08-25 19:21 60m -8 / -8 SP5XAY +7 / - 4 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
165645  -7 1910  SP9DB OE9HGV -23 (x3)
170115  +7 2179  SP9DB HG2DX -13
170215  -2  681  SP9DB SP9JZU -12 (x3)
171145  +6 2179  SP9DB HG2DX -05 (x2)
172345  -7 1658  SP9DB 9A2G +01 (x2)
172645 -10 1956  SP9DB HA8RC -25 (x2)
173715 +19  313  SP9DB OE3DXA JN88 (x2)
20m 
UTC    dB Audio  Message
131215 +16  547  SP9DB IU2VBP JN45 (x3)
184530  +5 2240  SP9DB DM2BR +06
180730 -10 2078  SP9DB PI4TX JO22
094900  -2 1776  SP9DB ON5JDB -15 (x2)
40m 
UTC    dB Audio  Message
110400  -6  873  SP9DB SQ9SET +00 (x2)
110500 -15 1529  SP9DB SP5IDR KO01 (x2)
110545 -18 1040  CQ SP9DB JO84                         a1
110600 -22 1529  SP9DB SP5IDR KO01 (x2)
110645 -15 1040  SH5RJX SP9DB RR73
110745 -17 1040  SP5IDR SP9DB -08
110800 -13 1529  SP9DB SP5IDR R+02
110815  -9 1040  SP5IDR SP9DB RR73
110830 -16 1529  SP9DB SP5IDR 73
110915 -14 1040  CQ SP9DB JO84
111600 -13 1741  SP9DB HA3HM -17 (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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