OA1F — 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: Peru Most frequent locator attributed to this token: FI03

Receiver-side FT8 activity involving OA1F, decoded by SO8OO in southeastern Poland. 275 FT8 messages attributed to this token as transmitter, on 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-08-31.

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 275 FT8 messages attributed to OA1F as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (84%) fell within the six-hour window 01:00-07:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (76%); the estimated median was -4 dB.

Overview

275
Messages attributed
12
UTC dates decoded
29
Active 15-min windows
-4 dB
Estimated median S/N

Bands

20m · 275
First attributed message: 2026-06-17
Last attributed message: 2026-08-31 06:38 UTC

Observed FT8 message patterns

Attributed sample
275 messages
Active dates
12 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-14 to +4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 49, strong (≥ -8 dB) 208.

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 OA1F 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 OA1F

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
FI03 · 56 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
11,332 km (approx.)
Last such locator decoded
2026-08-31 06:21 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 UTCBandOA1F S/NCounterpartCounterpart S/NMsgsCapture
09-29 06:34 40m - / - SP1IKK -12 / - 2 Partial capture
09-29 06:33 40m - / - DG0KT -6 / - 2 Partial capture
09-29 06:31 40m - / -19 RN1TV -3 / - 3 Partial capture
09-29 06:31 40m - / -7 F4BYA +3 / - 3 ✓ Closing fragment
09-29 06:22 40m - / -7 DL3BQV +5 / - 3 ✓ Closing fragment
09-29 06:22 40m - / - F4IDN -8 / - 3 Partial capture
09-29 06:20 40m - / -14 EA3NE +1 / - 3 ✓ Closing fragment
09-29 06:17 40m - / -16 RN1TV -3 / - 14 Partial capture
09-29 06:14 40m - / -7 F6GCP +9 / - 5 ✓ Closing fragment
09-29 06:14 40m - / -24 SM7HZK -8 / - 3 ✓ Closing fragment
09-29 06:07 60m - / - EA3CUU -4 / - 3 Partial capture
09-29 06:06 60m - / - F5NLY -12 / - 3 Partial capture
09-29 06:06 60m - / - HB9ACA -12 / - 5 Partial capture
09-29 06:03 60m - / - OZ6G +4 / - 2 Partial capture
09-29 06:01 60m - / - EA3CUU -3 / - 3 Partial capture
09-29 06:01 60m - / - IT9VCE -8 / - 5 Partial capture
09-29 05:58 60m - / - SM3LBN 0 / - 11 Partial capture
08-31 06:44 20m - / - PD0PHA -14 / - 5 Partial capture
08-31 06:41 20m - / - UA3LNM +11 / - 5 Partial capture
08-31 06:41 20m - / -11 PD1WMD -13 / - 4 ✓ Closing fragment
08-31 06:40 20m - / - RX3ASQ +10 / - 2 Partial capture
08-31 06:39 20m - / - F4NKF -9 / - 3 Partial capture
08-31 06:36 20m - / - F4JBR +8 / - 2 Partial capture
08-31 06:33 20m - / -10 DL6RS -14 / - 3 Partial capture
08-31 06:33 20m - / - ON6DO -19 / - 5 Partial capture
08-31 06:28 20m - / - F4NKF -9 / - 5 Partial capture
08-31 06:26 20m - / - RX3ASQ +12 / - 2 Partial capture
08-31 06:15 20m - / -3 SV1CEV -5 / - 8 ✓ Closing fragment
08-31 06:13 20m - / - R6LE +18 / - 2 Partial capture
08-31 06:11 20m -11 / - SO1CJ - / -19 2 ✓ Closing fragment
08-31 06:09 20m -12 / - JA1SKL - / -15 2 ✓ Closing fragment
08-31 06:08 20m - / - IT9DVZ -3 / - 4 Partial capture
08-31 06:08 20m -6 / - JA5NPV - / -6 2 ✓ Closing fragment
08-31 06:07 20m -8 / - VK5LSD - / -15 2 ✓ Closing fragment
08-31 06:07 20m - / - IU5VLU -18 / - 5 Partial capture
08-31 06:06 20m -8 / - SP7FID - / -17 2 ✓ Closing fragment
08-31 06:05 20m - / - R6LE +17 / - 3 Partial capture
08-31 06:03 20m - / +1 VK2ZR -3 / - 2 ✓ Closing fragment
08-31 06:00 20m -6 / - JA7ISM - / -13 2 ✓ Closing fragment
08-31 06:00 20m - / - R6LE +22 / - 2 Partial capture
08-29 06:08 20m - / - UA3IKR 0 / - 5 Partial capture
08-29 06:04 20m - / -6 YO7LPM -2 / - 4 ✓ Closing fragment
08-29 05:59 20m - / -11 <...> -5 / - 2 Partial capture
08-29 05:57 20m - / - OH5DHJ -12 / - 5 Partial capture
08-29 05:57 20m - / - R6LKG -12 / - 2 Partial capture
08-29 05:53 20m -12 / - JA6TJY - / -14 2 ✓ Closing fragment
08-29 05:52 20m -6 / - DL1FOB - / -16 2 ✓ Closing fragment
08-29 05:50 20m -14 / - IS0AWZ -12 / - 8 ✓ Closing observed
08-29 05:49 20m -4 / - SP5ES - / -10 2 ✓ Closing fragment
08-29 05:49 20m - / - R2DGN -13 / - 7 Partial capture

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
060500  -1 2897  OA1F IT9VCE JM77 (x2)
060600 -10 2026  OA1F HB9ACA JN36 (x2)
060630  -4 2531  OA1F F5NLY JN08
060700 -13 2026  OA1F HB9ACA JN36
060700  -6 2990  OA1F EA3CUU JN12
060730 -12 2027  OA1F HB9ACA JN36
060730 -16 1431  OA1F F5NLY JN08
060800 -13 2027  OA1F HB9ACA JN36
060800 -15 1431  OA1F F5NLY JN08
060800  -4 2990  OA1F EA3CUU JN12 (x4)
40m 
UTC    dB Audio  Message
062630  -8 2908  OA1F RN1TV -15 (x3)
062830 -12 2702  OA1F IU4TQQ -12
063100  +4 2982  OA1F F4BYA JN19
063130  +6 2915  OA1F RN1TV -19
063130  +5 2982  OA1F F4BYA R-07
063200  -7 2915  OA1F RN1TV -19
063200  +1 2982  OA1F F4BYA 73
063300  -7 2915  OA1F RN1TV -19
063330  -8 1157  OA1F DG0KT JO64
063400 -11 2198  OA1F SP1IKK JO73
063400  -5  800  OA1F DG0KT JO64
063430 -13 2197  OA1F SP1IKK JO73 (x2)
20m 
UTC    dB Audio  Message
064115 -11 2392  OA1F PD1WMD JO21
064145 -11 3028  OA1F UA3LNM KO75
064145 -13 2392  OA1F PD1WMD JO21
064215  -9 3028  OA1F UA3LNM KO75
064215 -13 2392  OA1F PD1WMD R-11
064245 +26 3029  OA1F UA3LNM KO75
064245 -15 2392  OA1F PD1WMD 73
064315 +24 3029  OA1F UA3LNM KO75
064315  -8  279  OA1F F4NKF JN13
064345 +25 3029  OA1F UA3LNM KO75
064415 -10 2013  OA1F PD0PHA JO32 (x5)

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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