W4KFC — 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: United States Most frequent locator attributed to this token: FM19

Receiver-side FT8 activity involving W4KFC, decoded by SO8OO in southeastern Poland. 18 FT8 messages attributed to this token as transmitter, on 80m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-30.

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 18 FT8 messages attributed to W4KFC as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (100%). In this small sample, the estimated median decoder S/N was -21 dB; no usual signal pattern is inferred.

Overview

18
Messages attributed
1
UTC dates decoded
6
Active 15-min windows
-21 dB
Estimated median S/N

Bands

First attributed message: 2026-08-30
Last attributed message: 2026-08-30 03:45 UTC

Observed FT8 message patterns

Attributed sample
18 messages
Active dates
1 UTC dates
Estimated median S/N
-21 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 2, strong (≥ -8 dB) 0.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Most frequent locator attributed to W4KFC

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
FM19 · 9 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,310 km (approx.)
Last such locator decoded
2026-08-30 03:44 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 UTCBandW4KFC S/NCounterpartCounterpart S/NMsgsCapture
08-30 06:51 40m - / -19 F4FQY +2 / - 2 ✓ Closing fragment
08-30 06:09 80m - / -6 F4FQY -4 / - 2 ✓ Closing fragment
08-30 05:28 80m - / - OK1DX +4 / - 2 Partial capture
08-30 05:24 80m - / - DL1UDO -9 / - 3 Partial capture
08-30 04:52 80m - / - S54L +7 / - 3 ✓ Closing fragment
08-30 04:43 80m - / -12 HB9CXZ -3 / - 2 ✓ Closing fragment
08-30 03:54 80m - / -17 SP3IOE -2 / - 3 ✓ Closing fragment
08-30 03:47 80m - / -13 SP6GCU +12 / - 3 ✓ Closing fragment
08-30 03:43 40m - / - YO6LM +6 / - 2 Partial capture
08-30 03:43 80m -24 / -20 9A4V +8 / - 4 ✓ Closing observed
08-30 03:43 80m - / - DF3IS +6 / - 2 Partial capture
08-30 03:43 80m - / -15 MI0OBC -14 / - 5 Partial capture
08-30 03:34 80m - / - IW9FRA -19 / - 3 Partial capture
08-30 03:32 80m - / - DF8QB -1 / - 2 Partial capture
08-30 03:32 80m - / +4 AA3B -21 / - 3 Partial capture
08-30 03:21 40m - / - F5OYA/P -7 / - 7 Partial capture
08-30 03:15 40m - / - EA5HM -8 / - 3 ✓ Closing fragment
08-30 03:14 40m - / - YO9IAB -8 / - 3 Partial capture
08-30 03:08 40m - / -18 YO4NF +1 / - 2 Partial capture
08-30 02:58 80m - / -4 IU3MAG +6 / - 2 Partial capture
08-30 02:52 80m - / -22 IK5CHL +2 / - 3 ✓ Closing fragment
08-30 02:47 80m - / -16 F4BYA +10 / - 3 ✓ Closing fragment
08-30 02:45 80m - / -21 R7DX +12 / - 4 ✓ Closing fragment
08-30 02:40 80m -22 / -16 YO9IAB +14 / -15 13 Partial capture
08-30 02:39 80m - / - IK5CHL +1 / - 4 Partial capture
08-30 02:24 80m - / - F5RRS -18 / - 3 Partial capture
08-30 02:15 80m - / - DM9EE +5 / - 2 Partial capture
08-30 02:06 80m - / - DL1UDO +1 / - 3 Partial capture
08-30 02:03 80m - / -16 SP7IIT +15 / - 3 ✓ Closing fragment
08-30 01:55 80m - / - DO7BE -4 / - 2 Partial capture
08-30 01:54 80m - / -25 UR5SG +13 / - 2 Partial capture
08-30 01:49 80m - / -14 SN5J +15 / - 4 Partial capture
08-30 01:48 80m - / -12 9A5E +10 / - 2 ✓ Closing fragment
08-30 01:44 80m - / -18 EA3NE +5 / - 3 ✓ Closing fragment
08-30 01:42 80m - / - DL4GCJ +4 / - 3 Partial capture
08-30 01:39 80m - / - LZ2VQ 0 / - 3 Partial capture
08-30 01:36 80m - / -24 UA4FKT +4 / - 4 ✓ Closing fragment
08-30 01:31 80m - / - DL4GCJ +3 / - 5 Partial capture
08-30 01:28 80m - / - GM5G -10 / - 5 ✓ Closing fragment
08-30 01:27 80m - / -22 IK2LFF -1 / - 9 ✓ Closing fragment
08-30 01:27 80m - / -15 ON1JP -18 / - 4 Partial capture
08-30 01:25 80m - / - OK1WE +18 / - 2 Partial capture
08-30 01:22 80m - / - DL4GCJ +4 / - 2 Partial capture
08-30 01:21 80m - / -16 SN5J +21 / - 3 Partial capture
08-30 01:18 80m - / - DO3KTY +8 / - 3 Partial capture
08-30 01:18 80m - / -16 OK1UOZ +7 / - 4 ✓ Closing fragment
08-30 01:16 80m - / - UA4FKT +8 / - 3 Partial capture
08-30 01:14 80m - / -18 IQ4JO +5 / - 4 ✓ Closing fragment
08-30 01:14 80m - / - LZ2VQ 0 / - 2 Partial capture
08-30 01:09 80m -22 / - N8FT - / -3 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
031500  -9 1500  W4KFC EA5HM IM99
031530 -11 2722  W4KFC YO9IAB KN25
031530  -7 1500  W4KFC EA5HM IM99 (x2)
032100  -7 1874  W4KFC F5OYA/P JN13 (x7)
034345  +4 2811  W4KFC YO6LM KN25 (x2)
065115  +2 2859  W4KFC F4FQY -19 (x2)
80m
UTC    dB Audio  Message
045315 +12 2073  W4KFC S54L 73
045615 -23 1928  W4KFC IK6DLK JN63 (x2)
050245 -13  650  W4KFC G0OYQ -16
050345  -6 2757  W4KFC F1DXP -06
051600 -24 1843  W4KFC IK6DLK JN63
051700 -10 1844  W4KFC DL5BWG JO72
052430  -7  900  W4KFC DL1UDO JO31 (x3)
052800  +2 1842  W4KFC OK1DX JN69 (x2)
053315 -11 1008  W4KFC F6FTB 73
060945  -5 2823  W4KFC F4FQY -06 (x2)
20m
UTC    dB Audio  Message
140530 -14 1099  W4KFC ON4JMV JO10 (x2)
142415 -13 1606  W4KFC F5PBG IN78 (x4)
205615 -13 2300  W4KFC SV5BYP -10 (x2)
210615 -14 2732  W4KFC DL6GBM JN48
211245  -7  575  W4KFC EA1IOK IN62 (x4)
211545  -1 1419  W4KFC LZ6C KN13
211815  -3 2726  W4KFC IU2WCY 73

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee