OK1CT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Czech Republic Most frequent locator attributed to this token: JN69

Receiver-side FT8 activity involving OK1CT, decoded by SO8OO in southeastern Poland. 1,541 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 60 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-18.

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 1,541 FT8 messages attributed to OK1CT as the transmitting token by decoded message structure across 60 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 20 m (22%) and 80 m (16%). Most decodes (52%) fell within the six-hour window 04:00-10:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (78%); the estimated median was -1.5 dB.

Overview

1,541
Messages attributed
60
UTC dates decoded
295
Active 15-min windows
-1.5 dB
Estimated median S/N

Bands

80m · 245 40m · 961 20m · 335
First attributed message: 2026-06-06
Last attributed message: 2026-09-18 06:46 UTC

Observed FT8 message patterns

Attributed sample
1,541 messages
Active dates
60 UTC dates
Estimated median S/N
-1.5 dB
Estimated 10th-90th percentile
-13 to +13 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 88, moderate (-15 to -9 dB) 247, strong (≥ -8 dB) 1,206.

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 OK1CT 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 OK1CT

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
JN69 · 941 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
634 km (approx.)
Last such locator decoded
2026-09-18 06:46 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 UTCBandOK1CT S/NCounterpartCounterpart S/NMsgsCapture
09-18 06:29 40m 0 / - SN100PKP - / - 2 Partial capture
09-18 06:25 40m -1 / -12 DB26YLBB -4 / 0 2 Partial capture
09-18 05:06 80m +17 / - N1WI - / -17 3 ✓ Closing fragment
09-18 05:04 80m +10 / - N3HPX - / -14 3 ✓ Closing fragment
09-17 20:05 80m +3 / - DF7NO -6 / -1 4 ✓ Full exchange observed
09-17 18:30 40m 0 / - M9KCA - / -8 2 ✓ Closing fragment
09-17 17:40 40m - / - UT0IN +2 / - 2 Partial capture
09-17 17:39 40m -8 / +3 PG5FRL -6 / -7 3 ✓ Full exchange observed
09-17 17:38 40m -6 / - EH3ST - / -5 2 ✓ Closing fragment
09-17 08:39 40m -7 / - F1LPT/P - / -6 3 ✓ Closing fragment
09-17 07:59 40m -4 / - G7HJX - / -16 5 ✓ Closing fragment
09-17 07:58 40m -8 / - G0TSM/P - / -6 3 ✓ Closing fragment
09-17 07:53 40m -3 / - HB9DLT - / -9 3 ✓ Closing fragment
09-17 07:51 40m -4 / - G4NKV/P - / -2 3 ✓ Closing fragment
09-17 07:48 40m -6 / - G4NKV - / - 2 Partial capture
09-17 05:25 40m - / -3 SM7WNM -14 / - 2 ✓ Closing fragment
09-17 05:25 40m -3 / +8 G3TKT -8 / -6 7 ✓ Full exchange observed
09-17 05:24 40m -1 / - KF8EXX - / -10 3 ✓ Closing fragment
09-17 04:09 80m +14 / - KY4WI -18 / -17 6 ✓ Closing observed
09-16 21:14 80m 0 / -5 3Z100PKP +8 / -3 3 Partial capture
09-16 21:12 80m +10 / - OE3EVB +8 / -1 6 ✓ Full exchange observed
09-16 20:40 80m -10 / -8 SN100PKP -1 / +1 3 Partial capture
09-16 20:06 80m -7 / - S09S - / - 4 Partial capture
09-16 19:02 80m +2 / - OL900JAR - / -8 2 Partial capture
09-16 15:43 40m +2 / - DC7LR - / -12 3 ✓ Closing fragment
09-16 06:54 40m -3 / - TK5NJ - / - 2 Partial capture
09-16 06:47 40m +4 / -2 S55A -2 / +1 6 ✓ Full exchange observed
09-16 06:46 40m +2 / - M9WAL - / -12 3 ✓ Closing fragment
09-16 06:13 40m +1 / - EH3ST - / - 2 Partial capture
09-16 06:03 40m -7 / -11 UA4FKT -9 / -7 6 ✓ Full exchange observed
09-16 06:02 40m 0 / - WY5L - / -23 3 ✓ Closing fragment
09-16 05:54 40m -1 / - J48S - / -11 3 ✓ Closing fragment
09-16 05:51 40m -2 / - XE1NK - / - 2 Partial capture
09-16 04:48 80m +4 / - N1WI - / - 2 Partial capture
09-16 04:28 80m +7 / - KG8CW - / - 4 Partial capture
09-16 04:24 80m +5 / - N1WI - / - 6 Partial capture
09-15 19:37 80m - / - RR73; +8 / - 2 Partial capture
09-15 19:36 80m +3 / +3 3Z100PKP +7 / -16 9 Partial capture
09-15 19:31 80m 0 / - K4BQP/4 - / - 2 Partial capture
09-15 19:27 80m +4 / -3 II6IALU -1 / +3 2 Partial capture
09-15 17:50 80m +6 / +9 OE5ABL -4 / -1 4 ✓ Full exchange observed
09-15 17:49 80m +9 / -3 II6IGTO -20 / -9 2 Partial capture
09-15 06:37 40m -2 / - HF100PKP - / -6 2 Partial capture
09-15 06:35 40m -8 / -11 EM70WWW +5 / -20 2 Partial capture
09-15 06:30 40m -5 / - TK/4O7CC - / -12 2 Partial capture
09-15 05:55 40m +10 / - F4GYM/P -3 / -7 3 ✓ Closing observed
09-15 05:47 40m -2 / - EH3ST - / - 2 Partial capture
09-15 05:17 80m +6 / -6 HF26BMS +15 / -13 3 Partial capture
09-15 04:31 80m +11 / +5 DO1ID 0 / -10 4 ✓ Full exchange observed
09-15 04:29 80m -4 / -2 PA4PA -15 / -4 5 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
174000  +1 1535  OK1CT UT0IN KO50
174000  -6 1782  OK1CT PG5FRL R+03
174015  -8 1781  PG5FRL OK1CT RR73
174030  +3 1534  OK1CT UT0IN KO50
182830  -4 2250  UB4COE/P OK1CT JN69
182900  +0 2249  R5QO/QRP OK1CT R-11
183000  +3  255  M9KCA OK1CT R-08 (x2)
061015  -6 1847  IT9/IZ6FXP OK1CT JN69
062500  -4 2067  OK1CT DB26YLBB -12
062515  -1 2068  DB26YLBB OK1CT R+00
062615  +3  752  SQ2MIKS OK1CT -12
062915  +0 2439  SN100PKP OK1CT JN69 (x2)
064615  -6 1842  G7HJX OK1CT JN69
80m 
UTC    dB Audio  Message
041015 -17 2711  OK1CT KY4WI RR73
041030 +15 2710  KY4WI OK1CT 73
041045  +6 1603  OK1CT SN1A JO73
041045 -19 2712  OK1CT KY4WI RR73
200545  +4 1443  DF7NO OK1CT -01
200600  -4 1443  OK1CT DF7NO R+20
200615  +2 1443  DF7NO OK1CT RR73
200630  -7 1443  OK1CT DF7NO 73
200700 -13  698  OK1CT RW4HB LO53
050430  +8 1985  N3HPX OK1CT JN69 (x3)
050600 +15 2663  N1WI OK1CT JN69 (x3)
20m 
UTC    dB Audio  Message
184545  +2 2373  OK1CT EA2WX/P +02
185130 -18 2372  SQ9SF OK1CT RR73
191615  -4 1079  N8DPD OK1CT JN69
191815  -1 2367  W1TF OK1CT JN69 (x3)
191945  +4 1080  N8DPD OK1CT JN69 (x2)
205430  -9 2723  9A3TGY OK1CT JN69
205445  -3 2724  OK1CT 9A3TGY -11 (x2)
205530  -9 2724  9A3TGY OK1CT 73
205600  -8 2720  SQ9SF OK1CT -18 (x2)
205900 -13 2629  HI3RRR OK1CT JN69

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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