K5RSB — 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: United States Most frequent locator attributed to this token: EM20

Receiver-side FT8 activity involving K5RSB, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-26 and 2026-08-27.

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 18 FT8 messages attributed to K5RSB as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -15 dB; no usual signal pattern is inferred.

Overview

18
Messages attributed
2
UTC dates decoded
3
Active 15-min windows
-15 dB
Estimated median S/N

Bands

20m · 18
First attributed message: 2026-08-26
Last attributed message: 2026-08-27 04:29 UTC

Observed FT8 message patterns

Attributed sample
18 messages
Active dates
2 UTC dates
Estimated median S/N
-15 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 4.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with K5RSB in decoded directed-looking exchanges:

Most frequent locator attributed to K5RSB

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
EM20 · 6 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
9,123 km (approx.)
Last such locator decoded
2026-08-27 04:15 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 UTCBandK5RSB S/NCounterpartCounterpart S/NMsgsCapture
11-06 06:36 40m - / -15 DK8ZZ 0 / - 2 ✓ Closing fragment
11-06 06:12 40m - / -3 EG1PR -18 / - 4 Partial capture
11-06 04:49 40m - / -23 S55DX +7 / - 2 ✓ Closing fragment
11-06 04:24 40m - / -18 EA3JW -8 / - 4 ✓ Closing fragment
11-05 07:42 40m - / -22 F4BNZ -9 / - 2 Partial capture
11-05 06:02 40m - / -5 PD40EUDXF +6 / - 2 Partial capture
11-05 05:57 40m - / -19 IZ0RVI +6 / - 2 ✓ Closing fragment
11-05 05:47 40m - / -22 LZ3QC +8 / - 2 ✓ Closing fragment
11-05 05:40 40m - / -15 E70A -6 / - 4 Partial capture
11-05 03:31 40m - / -16 SV3IBP -2 / - 3 ✓ Closing fragment
11-04 07:08 40m - / -10 G4IFX 0 / - 2 ✓ Closing fragment
11-04 05:54 40m - / -18 IT9JNR -10 / - 2 ✓ Closing fragment
11-04 04:47 40m - / - CT2HEX -12 / - 2 Partial capture
11-04 04:36 40m - / -10 EA4HWT -11 / - 3 ✓ Closing fragment
11-03 05:21 40m - / -15 5B4AMM -3 / - 3 ✓ Closing fragment
11-03 01:43 40m - / -11 CU2DX -4 / - 3 ✓ Closing fragment
11-03 01:40 40m - / -15 SV5BYP -8 / - 2 Partial capture
11-03 01:37 40m - / -11 HK4EGW -18 / - 3 Partial capture
11-01 07:43 40m - / -18 M0UTD -2 / - 3 ✓ Closing fragment
11-01 07:40 40m - / -21 M0UTD -6 / - 2 Partial capture
10-30 02:14 40m - / -18 5B4AMX +1 / - 5 ✓ Closing fragment
10-29 05:03 40m - / -14 EA3CU -19 / - 2 Partial capture
10-28 06:29 40m - / -18 PD4RD +1 / - 3 ✓ Closing fragment
10-26 08:16 40m - / -15 ON8DM -4 / - 2 Partial capture
10-26 06:33 40m - / -17 OZ1KEF -6 / - 2 ✓ Closing fragment
10-26 06:30 40m - / -20 F4JJA -8 / - 4 ✓ Closing fragment
10-26 05:36 40m - / -17 G8KHF -3 / - 3 Partial capture
10-26 04:35 40m - / -15 EA1CUB -17 / - 9 Partial capture
10-25 06:58 40m - / -21 G8KHF -12 / - 4 Partial capture
10-25 04:00 40m - / -10 IT9VCE +1 / - 8 ✓ Closing fragment
10-24 06:50 40m - / -16 F4JJA -14 / - 4 ✓ Closing fragment
10-24 06:29 40m - / -3 IK2JYT -3 / - 3 ✓ Closing fragment
10-24 06:25 40m - / -19 SP4MPH +3 / - 3 Partial capture
10-24 06:00 40m - / -17 F4FQY +16 / - 2 Partial capture
10-23 06:44 40m - / -12 F5OIH +2 / - 3 ✓ Closing fragment
10-23 06:40 40m - / -12 OM3PC +6 / - 4 ✓ Closing fragment
10-23 06:36 40m - / -16 F6HUK +1 / - 3 ✓ Closing fragment
10-23 06:15 40m - / -25 DL6NDN -3 / - 4 Partial capture
10-23 05:35 40m - / -21 IZ8XXE -16 / - 2 Partial capture
10-22 07:02 40m - / -7 F8RZ -4 / - 3 ✓ Closing fragment
10-22 06:17 40m - / -16 I5UOA -2 / - 3 ✓ Closing fragment
10-22 04:34 40m - / - EA7NK -9 / - 4 Partial capture
10-20 07:35 40m - / -15 GU0SUP 0 / - 2 Partial capture
10-20 05:40 40m - / -10 OT7K +12 / - 2 ✓ Closing fragment
10-20 05:09 40m - / -19 IZ2QPP -1 / - 2 ✓ Closing fragment
10-20 04:54 40m - / -23 IK4DCW +12 / - 3 ✓ Closing fragment
10-19 06:46 40m - / -16 G8KHF -8 / - 4 Partial capture
10-19 06:32 40m - / -5 G4OWT -14 / - 2 Partial capture
10-19 04:01 40m - / -22 LZ2IP -10 / - 6 ✓ Closing fragment
10-19 03:50 40m - / -24 IT9VCE -7 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
074215 -11 1883  K5RSB F4BNZ -22 (x2)
042400  -7  917  K5RSB EA3JW -18 (x4)
044930  +6 2293  K5RSB S55DX -23 (x2)
061200 -18 2167  K5RSB EG1PR -03 (x4)
062115  -2 2350  K5RSB HB9CEV RR73
063615  -2 1975  K5RSB DK8ZZ -15 (x2)
80m 
UTC    dB Audio  Message
040145 +22  415  K5RSB SP3PLD JO72 (x2)
063330 -13 2124  K5RSB EA1DR -16 (x2)
20m 
UTC    dB Audio  Message
005100 -10  539  K5RSB HJ3ZOM RRR (x6)
010745  -9 1130  K5RSB W1TXT -05 (x3)
052730 -15 1378  K5RSB IS0AWZ -02 (x3)
054045  -5 2676  K5RSB VK2ZR -09 (x3)

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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