OK1WCF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JO80

Receiver-side FT8 activity involving OK1WCF, decoded by SO8OO in southeastern Poland. 3,882 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 40 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-06.

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 3,882 FT8 messages attributed to OK1WCF as the transmitting token by decoded message structure across 40 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 20 m (20%) and 80 m (11%). Most decodes (61%) fell within the six-hour window 19:00-01:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -5 dB.

Overview

3,882
Messages attributed
40
UTC dates decoded
427
Active 15-min windows
-5 dB
Estimated median S/N

Bands

80m · 436 40m · 2,688 20m · 758
First attributed message: 2026-06-06
Last attributed message: 2026-09-06 23:47 UTC

Observed FT8 message patterns

Attributed sample
3,882 messages
Active dates
40 UTC dates
Estimated median S/N
-5 dB
Estimated 10th-90th percentile
-17 to +8.4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 489, moderate (-15 to -9 dB) 898, strong (≥ -8 dB) 2,495.

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 OK1WCF 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 OK1WCF

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
JO80 · 2,347 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
347 km (approx.)
Last such locator decoded
2026-09-06 23:47 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 UTCBandOK1WCF S/NCounterpartCounterpart S/NMsgsCapture
09-08 01:55 40m - / -4 D44TWO -16 / - 3 ✓ Closing fragment
09-06 13:16 40m 0 / - OH6OAT - / -20 4 ✓ Closing fragment
09-06 13:14 40m -1 / - OK2JKO - / - 2 Partial capture
09-06 13:12 40m +4 / - M8UKQ - / -15 3 Partial capture
09-06 13:09 40m +4 / - SP9MOA - / - 5 Partial capture
09-06 13:06 40m -3 / - IZ5OPP - / - 4 Partial capture
09-06 13:05 40m -6 / - PG5FRL - / -9 3 ✓ Closing fragment
09-06 13:02 40m -4 / - M7FHO - / -24 6 Partial capture
09-06 12:59 40m -4 / - OH1EEZ - / -12 4 ✓ Closing fragment
09-06 12:59 40m 0 / -5 OK2JKO -6 / - 3 Partial capture
09-06 12:56 40m +1 / - G0RWF - / - 5 Partial capture
09-06 12:55 40m +6 / - SP3GHC - / -9 3 ✓ Closing fragment
09-06 12:52 40m -2 / - AA7A - / - 5 Partial capture
09-06 12:50 40m -1 / - PD4HT -17 / -15 4 ✓ Closing observed
09-06 12:49 40m +2 / - DG5NBO - / -8 3 ✓ Closing fragment
09-06 12:47 40m -4 / - RK3YWA - / -13 3 ✓ Closing fragment
09-06 12:42 40m +3 / - M8UKQ - / -18 9 Partial capture
09-06 12:40 40m -2 / - PE1KYP - / - 2 ✓ Closing fragment
09-06 12:38 40m +4 / - PA2RO/P -10 / -2 7 ✓ Full exchange observed
09-06 12:36 40m -1 / +4 SP5SJL -2 / -4 5 ✓ Full exchange observed
09-06 12:34 40m -2 / +3 DJ9FK -19 / -12 5 ✓ Full exchange observed
09-06 12:30 40m -2 / -9 SQ9RKE -10 / +3 4 ✓ Full exchange observed
09-06 12:28 40m -8 / - OZ2NYB/P - / -3 3 ✓ Closing fragment
09-06 12:26 40m -7 / - ES0MVM - / +2 3 ✓ Closing fragment
09-06 12:23 40m -7 / - DJ9FK - / - 5 Partial capture
09-06 12:22 40m -7 / -2 OZ9FF -17 / +1 4 ✓ Full exchange observed
09-06 12:20 40m -8 / - G0RWF - / - 2 Partial capture
09-06 12:17 40m +7 / - DM5TB - / -17 3 ✓ Closing fragment
09-06 12:16 40m 0 / -3 DL9KM -6 / -8 5 ✓ Full exchange observed
09-06 12:15 40m +1 / -2 UR5WBO -7 / -7 5 ✓ Full exchange observed
09-06 12:13 40m -3 / -8 SP7OK -8 / -9 5 ✓ Full exchange observed
09-06 12:12 40m -5 / - DG4ST -17 / -3 4 ✓ Closing observed
09-06 12:09 40m +1 / - G4FPS - / -20 6 Partial capture
09-06 05:29 40m +2 / - OZ7SKB/P +6 / 0 5 ✓ Full exchange observed
09-06 05:00 40m -6 / -8 R1943OD -5 / -7 6 Partial capture
09-06 04:58 40m -13 / - ON1DGN - / -7 3 ✓ Closing fragment
09-06 04:57 40m -8 / - YS1MS - / -14 2 ✓ Closing fragment
09-06 04:52 40m -8 / - YS1MS - / -14 5 Partial capture
09-06 04:45 40m -1 / - KE9BLG - / -7 3 ✓ Closing fragment
09-06 01:17 40m -9 / - K9GTA - / - 2 Partial capture
09-06 01:03 40m - / +5 K1FEV -10 / - 2 Partial capture
09-06 00:38 40m - / -16 EX8QD -4 / - 5 Partial capture
09-05 23:35 40m -16 / - WE8M - / -13 2 ✓ Closing fragment
09-05 19:11 40m +9 / - OH2MA - / - 3 Partial capture
09-05 19:08 40m +10 / - IN3LHF - / - 5 Partial capture
09-05 19:06 40m +15 / - SP1LIS - / -13 5 ✓ Closing fragment
09-05 19:02 40m +17 / - LB5AK -9 / -10 4 ✓ Closing observed
09-05 19:00 40m +12 / - PC7W - / -17 4 ✓ Closing fragment
09-05 18:56 40m +6 / - R3DNB - / -17 4 ✓ Closing fragment
09-05 18:54 40m +3 / - IU5VLR - / - 5 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
131345  +4  787  M8UKQ OK1WCF R-15
131445  -1 2071  OK2JKO OK1WCF JO80 (x2)
131615  -2 2314  OH6OAT OK1WCF JO80 (x4)
234745  -5 2897  WD1W OK1WCF JO80
015530 -14 1778  OK1WCF D44TWO -04 (x3)
015730 -14  787  OK1WCF IH9/IT9JUI +02
015800 -14  787  OK1WCF RR73; R6OD <...> +04
020000 -16 3127  OK1WCF NC3S -08
024630 -24 1808  OK1WCF HJ4AAM 73
10m 
UTC    dB Audio  Message
124745 -17 2010  OK1WCF RN6MA -07
161445 -15 1251  OK1WCF PD00DOG -14
161715  -9  920  OK1WCF DO2PY 73
164615 -20 1466  OK1WCF R6OP RR73
165600  -3  806  OK1WCF ON2WI +01 (x2)
152545 -18 1334  OK1WCF G8OO JO02 (x3)
115130  -4 2596  OK1WCF DO3BZ -01 (x2)
071700  +3 2542  OK1WCF R6OK +00 (x2)
085415  -9  895  OK1WCF IT9IVN +03 (x2)
20m 
UTC    dB Audio  Message
141615  +3 1031  YO3NSS OK1WCF JO80 (x3)
141815  -7 1979  PA1PXL OK1WCF JO80 (x2)
140830  -3 2399  OK1WCF F1JPG -01 (x10)
80m 
UTC    dB Audio  Message
200530  -8 2281  OK1WCF GB2WWA -04
200545  -6 2281  GB2WWA OK1WCF R-06
200600  -8 2281  OK1WCF GB2WWA RR73
200615  +5 2281  GB2WWA OK1WCF 73
201130  +3 1106  TM8WWA OK1WCF JO80 (x7)
201545 -21 1107  OK1WCF TM8WWA RRR
201600  -2 1107  TM8WWA OK1WCF 73
201615  -5  890  OK1WCF RC6OZ KN98 (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.

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