F4JKY — 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: France Most frequent locator attributed to this token: JN23

Receiver-side FT8 activity involving F4JKY, decoded by SO8OO in southeastern Poland. 288 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 15 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-18.

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 288 FT8 messages attributed to F4JKY as the transmitting token by decoded message structure across 15 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 40 m (28%) and 10 m (13%). The busiest six-hour window was 09:00-15:00 UTC, containing 39% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -4 dB.

Overview

288
Messages attributed
15
UTC dates decoded
42
Active 15-min windows
-4 dB
Estimated median S/N

Bands

40m · 81 20m · 170 10m · 37
First attributed message: 2026-06-10
Last attributed message: 2026-10-18 00:12 UTC

Observed FT8 message patterns

Attributed sample
288 messages
Active dates
15 UTC dates
Estimated median S/N
-4 dB
Estimated 10th-90th percentile
-14 to +6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 68, strong (≥ -8 dB) 203.

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 F4JKY 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 F4JKY

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
JN23 · 181 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,462 km (approx.)
Last such locator decoded
2026-10-18 00:07 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 UTCBandF4JKY S/NCounterpartCounterpart S/NMsgsCapture
10-19 08:09 40m - / -9 F1PBZ -6 / - 2 Partial capture
10-18 07:37 40m - / +2 IZ2PRI -10 / - 2 ✓ Closing fragment
10-18 07:31 40m - / -2 DL8WEM +4 / - 3 ✓ Closing fragment
10-18 07:31 40m - / - SQ8GBG -2 / - 4 Partial capture
10-18 07:23 40m - / -11 IV3JTG +1 / - 3 ✓ Closing fragment
10-18 07:18 40m - / - SP2SGZ -6 / - 3 Partial capture
10-18 07:10 40m - / -20 R2AL -12 / - 3 ✓ Closing fragment
10-18 00:09 40m -7 / - BG0FQU - / -7 3 Partial capture
10-18 00:08 40m -3 / - KO4FQW - / -14 5 Partial capture
10-17 23:49 40m -5 / - PD1CBH - / -12 5 Partial capture
10-17 23:41 40m - / - RZ4FWA -16 / - 4 Partial capture
10-17 23:35 40m 0 / - VO1ACZ - / -17 18 ✓ Closing fragment
10-17 23:26 40m -7 / - TF8KW - / -9 4 ✓ Closing fragment
10-17 23:24 40m -10 / - TJ1GD - / - 2 Partial capture
10-17 23:21 40m -4 / - PG0T - / -19 3 ✓ Closing fragment
09-29 06:43 40m - / +2 GJ0KYZ -8 / - 2 ✓ Closing fragment
09-29 06:41 40m - / - F8STC -4 / - 2 Partial capture
09-29 06:41 40m -17 / - ON3CCM -14 / -11 2 ✓ Closing observed
09-29 06:38 40m - / - PD1ADA -13 / - 7 Partial capture
09-29 06:38 40m - / +1 F1PBZ -11 / - 4 Partial capture
09-27 07:21 40m - / -9 DL4DBM -11 / - 3 ✓ Closing fragment
09-27 07:17 40m - / - DL2BU -10 / - 2 Partial capture
09-27 06:54 40m - / -24 DL1AG -12 / - 3 ✓ Closing fragment
09-09 08:56 40m - / -19 DK5UR -15 / - 2 ✓ Closing fragment
08-30 08:52 20m - / - PD9FLX +3 / - 2 Partial capture
08-30 08:32 20m - / - PD9FLX -11 / - 2 Partial capture
08-28 09:56 10m -12 / - DO7DK - / -4 2 ✓ Closing fragment
08-28 09:51 10m -16 / - DG6GR - / -2 2 Partial capture
08-28 09:45 10m -9 / - M0IAP - / -17 2 ✓ Closing fragment
08-28 09:43 10m -12 / - F1TXI - / -9 2 ✓ Closing fragment
08-28 09:40 10m -13 / - DD5TL/P - / -7 6 ✓ Closing fragment
08-28 09:39 10m -11 / - SP5WCK - / -2 2 ✓ Closing fragment
08-27 09:33 20m - / - PD9FLX +4 / - 14 Partial capture
08-27 09:20 20m - / -13 TA3NK -6 / - 3 Partial capture
08-27 09:19 20m - / - PD9FLX +5 / - 9 Partial capture
08-27 09:14 20m - / -2 DL4DBM -7 / - 2 ✓ Closing fragment
08-27 08:32 40m - / +1 OE8PIT -11 / - 5 ✓ Closing fragment
08-27 08:30 40m - / -10 DK5UR -6 / - 6 ✓ Closing fragment
08-27 08:30 40m - / -6 F1PBZ -8 / - 2 ✓ Closing fragment
08-26 09:51 20m -1 / - CT1END/P - / - 3 Partial capture
08-24 08:20 20m - / - EA5W -8 / - 2 Partial capture
08-24 08:19 20m - / - PD9FLX 0 / - 2 Partial capture
08-22 13:22 20m - / - 2E0BRU -22 / - 2 Partial capture
08-21 16:23 20m - / -14 RU6FK -6 / - 3 ✓ Closing fragment
08-21 16:18 20m -18 / -4 DL2VN -9 / -19 5 ✓ Closing observed
08-21 16:13 20m -12 / - F4JUO - / -12 2 Partial capture
08-21 16:09 20m -15 / 0 RU6FK -11 / -6 2 Partial capture
08-21 16:07 20m -15 / -4 YO9HP -6 / - 3 ✓ Closing observed
08-20 20:01 20m -3 / -15 <...> -12 / -17 3 Partial capture
08-20 19:45 20m +5 / - CT1END/P - / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
072300  -1  892  F4JKY IV3JTG JN65 (x3)
072500 -18  893  F4JKY DJ3WF 73
073100  -3 1629  F4JKY SQ8GBG KN09
073100  +7  893  F4JKY DL8WEM JN48
073130  +0 1629  F4JKY SQ8GBG KN09
073130  +1  893  F4JKY DL8WEM R-02
073200  -2 1628  F4JKY SQ8GBG KN09
073200  +3  893  F4JKY DL8WEM 73
073230  -1 1553  F4JKY SQ8GBG KN09
073700  -9  893  F4JKY IZ2PRI +02 (x2)
080945  -5 2787  F4JKY F1PBZ -09 (x2)
20m 
UTC    dB Audio  Message
093930  +1 2596  F4JKY PD9FLX JO22
093945  +0 1000  CQ PARC F4JKY JN23
094000  +5 2596  F4JKY PD9FLX JO22
094015  -6 1001  DK5UR F4JKY -08
094030  +2 2596  F4JKY PD9FLX JO22 (x11)
10m 
UTC    dB Audio  Message
094415 -11 1009  F1TXI F4JKY RR73
094445 -12 1009  DD5TL/P F4JKY RR73
094545  -8 1009  M0IAP F4JKY -17 (x2)
094715 -13 1008  F9IE F4JKY RR73
094745 -11 1009  CQ F4JKY JN23 (x2)
094845 -14 1009  DG6GR F4JKY -13
095045 -15 1009  CQ F4JKY JN23 (x2)
095145 -15 1009  DG6GR F4JKY -02 (x2)
095545 -12 1009  CQ F4JKY JN23
095615 -14 1009  DO7DK F4JKY -04 (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.

CW

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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