SP5RFL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5RFL, decoded by SO8OO in southeastern Poland. 94 FT8 messages attributed to this token as transmitter, on 60m, 40m, 20m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-12.

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 94 FT8 messages attributed to SP5RFL as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (53%), followed by 20 m (24%) and 60 m (22%). Most decodes (99%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

94
Messages attributed
17
UTC dates decoded
23
Active 15-min windows
-11 dB
Estimated median S/N

Bands

60m · 21 40m · 50 20m · 23
First attributed message: 2026-06-07
Last attributed message: 2026-09-12 13:44 UTC

Observed FT8 message patterns

Attributed sample
94 messages
Active dates
17 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-20 to -5 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 46, strong (≥ -8 dB) 27.

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 SP5RFL 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 SP5RFL

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
KO02 · 44 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
290 km (approx.)
Last such locator decoded
2026-09-06 14:29 UTC

Other locator fields attributed to this token: JO74 (17) and KO03 (2).

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 UTCBandSP5RFL S/NCounterpartCounterpart S/NMsgsCapture
09-12 15:51 40m - / -16 PA3EWP +6 / - 2 ✓ Closing fragment
09-06 14:24 60m -9 / -15 YO2IS -6 / -13 11 ✓ Full exchange observed
09-06 14:23 60m -8 / -1 LY3BRA +2 / - 4 ✓ Closing observed
09-06 14:01 40m - / 0 DL4ME -9 / - 2 ✓ Closing fragment
09-04 13:53 60m -21 / -9 DD6ZV -15 / +9 5 ✓ Full exchange observed
09-03 15:56 40m - / -7 UT2PC +8 / - 2 ✓ Closing fragment
09-03 15:54 40m -14 / -15 PA7ZZ +4 / - 3 ✓ Closing observed
09-03 15:51 40m - / -13 DJ1TU -8 / - 5 ✓ Closing fragment
09-03 15:08 40m - / -7 HG0NPJ +1 / - 2 ✓ Closing fragment
09-03 14:57 40m - / -13 UW5KW -2 / - 3 ✓ Closing fragment
09-02 13:37 40m -19 / -11 DL3EBJ -9 / +10 3 ✓ Full exchange observed
09-01 15:44 40m - / -24 IK4IDY -6 / - 3 ✓ Closing fragment
08-31 11:19 20m - / -12 MW3FLI -10 / - 2 ✓ Closing fragment
08-31 11:14 20m - / -17 RX9ABI 0 / - 2 ✓ Closing fragment
08-31 11:13 20m - / -15 9A4AA -4 / - 2 ✓ Closing fragment
08-30 14:34 40m - / +4 SQ9DHD -7 / - 2 ✓ Closing fragment
08-30 14:31 40m - / -14 SP2ZST -12 / - 3 ✓ Closing fragment
08-30 14:28 40m - / -18 RM6OS +6 / - 2 ✓ Closing fragment
08-30 14:26 40m - / -7 OZ7CL -14 / - 3 Partial capture
08-30 14:17 20m - / -1 M0CTI 0 / - 2 Partial capture
08-30 14:15 20m - / -9 R3NCG +8 / - 11 Partial capture
08-30 14:14 20m - / -16 R6OU -6 / - 2 Partial capture
08-30 14:09 20m - / -8 R6LKG +12 / - 2 ✓ Closing fragment
08-30 14:07 20m - / -25 G3EFG +2 / - 2 Partial capture
08-29 14:43 40m - / -4 DM5ME 0 / - 2 ✓ Closing fragment
08-29 14:36 40m - / -19 G4DBW -12 / - 3 Partial capture
08-29 14:26 40m - / -4 DL1TRK +3 / - 2 ✓ Closing fragment
08-29 14:15 20m - / -18 RM6OS -9 / - 2 Partial capture
08-29 14:09 20m - / -1 R2BCZ/P -16 / - 2 ✓ Closing fragment
08-29 14:03 20m - / -11 UG4L +8 / - 2 Partial capture
08-26 17:01 40m -11 / -16 IK0CHU -2 / +4 5 ✓ Full exchange observed
08-26 16:56 40m - / -19 DJ0MAB +5 / - 3 ✓ Closing fragment
08-26 16:39 20m - / -15 RA4CGO -22 / - 2 ✓ Closing fragment
08-26 16:36 20m - / -14 M0LAD +9 / - 3 ✓ Closing fragment
08-26 16:34 20m - / +9 R3UAX 0 / - 2 ✓ Closing fragment
08-25 15:55 40m - / +3 OH2ZZ -9 / - 2 ✓ Closing fragment
08-25 15:32 20m - / -5 F4LQJ +10 / - 2 ✓ Closing fragment
08-25 15:18 20m - / -21 CR7BUJ -7 / - 2 ✓ Closing fragment
08-23 14:00 20m - / - DM2DXA -14 / - 2 ✓ Closing fragment
08-23 13:56 20m - / -19 M1DBB -5 / - 10 ✓ Closing fragment
08-23 13:53 20m - / -10 IW9FRA -16 / - 3 ✓ Closing fragment
08-23 13:48 20m - / -18 CR7BUJ -10 / - 3 Partial capture
08-23 13:32 20m - / - TA3NK +14 / - 11 Partial capture
08-23 13:28 20m - / -13 F4AWT +4 / - 4 ✓ Closing fragment
08-23 13:09 40m -10 / -11 SQ9BDB -12 / +3 4 ✓ Full exchange observed
08-23 13:09 40m -6 / - DL5WP - / - 2 Partial capture
08-23 13:04 40m - / 0 US8KA +3 / - 3 ✓ Closing fragment
08-23 12:57 20m - / 0 EB1DJ -4 / - 2 ✓ Closing fragment
08-23 12:57 20m - / -11 F1FPM -4 / - 5 Partial capture
08-23 12:55 20m - / -6 M9KER -6 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
155215  -8 1943  SP5RFL DJ1TU JN48 (x3)
155400  +4  676  SP5RFL PA7ZZ -15 (x2)
155445 -14 2677  PA7ZZ SP5RFL 73
155600  +7 1007  SP5RFL UT2PC -07 (x2)
125630 -16 1742  SP5RFL HA3HM +00
135545 -10 1702  SP5RFL SP9GCZ -06
140100 -11 2142  SP5RFL DL4ME +00 (x2)
154945  -1  662  SP5RFL DG1KFR -07
155145  +6 2268  SP5RFL PA3EWP -16 (x2)
60m 
UTC    dB Audio  Message
142615 -12  773  CQ SP5RFL KO02 (x2)
142700  -3  982  SP5RFL YO2IS -15
142715  -8  773  YO2IS SP5RFL R-13
142730 -12  990  SP5RFL YO2IS -15
142745 -10  773  YO2IS SP5RFL R-08
142800  -4  998  SP5RFL YO2IS -15
142815 -10  773  CQ SP5RFL KO02
142830  -6 1004  SP5RFL YO2IS -15
142845 -10  772  YO2IS SP5RFL R-15
142900  -5 1011  SP5RFL YO2IS RR73
142915  -4 2671  YO2IS SP5RFL 73
142945  -1 2671  CQ SP5RFL KO02 (x3)
20m 
UTC    dB Audio  Message
141815 +13 2855  SP5RFL R3NCG -09 (x2)
141845  -1  394  SP5RFL M0CTI -01
141915 +14 2855  SP5RFL R3NCG -09 (x4)
144145 -14 2143  SP5RFL LA1PHA -15
111315  -5  726  SP5RFL 9A4AA -15 (x2)
111445  +2  272  SP5RFL RX9ABI -17 (x2)
111900 -10  904  SP5RFL MW3FLI -12 (x2)
112815 -22 1878  SP5RFL M7CYY -11

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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