KR4IJC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM05

Receiver-side FT8 activity involving KR4IJC, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-13 and 2026-08-27.

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 34 FT8 messages attributed to KR4IJC as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

34
Messages attributed
6
UTC dates decoded
8
Active 15-min windows
-12 dB
Estimated median S/N

Bands

20m · 34
First attributed message: 2026-07-13
Last attributed message: 2026-08-27 23:33 UTC

Observed FT8 message patterns

Attributed sample
34 messages
Active dates
6 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-19 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 19, strong (≥ -8 dB) 9.

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 KR4IJC 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 KR4IJC

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
FM05 · 11 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,754 km (approx.)
Last such locator decoded
2026-08-27 23:29 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 UTCBandKR4IJC S/NCounterpartCounterpart S/NMsgsCapture
08-31 02:07 20m - / -7 5Z4VJ -15 / - 2 ✓ Closing fragment
08-28 11:17 20m - / -16 G1LQT -9 / - 6 Partial capture
08-28 11:13 20m - / -22 LA6RJA 0 / - 2 Partial capture
08-28 11:07 20m - / -25 LA6RJA +6 / - 4 Partial capture
08-28 00:23 80m - / -15 LZ1KU +11 / - 3 ✓ Closing fragment
08-27 23:32 20m -13 / - OK1TI - / -3 3 ✓ Closing fragment
08-27 23:28 20m -13 / -14 7Z1BQ 0 / - 4 ✓ Closing observed
08-27 23:26 20m -14 / -7 PD0PY -20 / -17 3 ✓ Full exchange observed
08-27 23:24 20m -14 / - W4KWS - / - 2 ✓ Closing fragment
08-27 23:11 20m -11 / -11 7Z1DM +2 / -13 9 ✓ Full exchange observed
08-27 23:11 20m -10 / -15 DH2RL -13 / -22 5 ✓ Full exchange observed
08-20 19:39 20m - / - ON3MV -9 / - 3 Partial capture
08-11 00:15 40m - / - 9A4ZM -6 / - 2 Partial capture
08-09 23:39 40m - / - RN6HK -18 / - 2 Partial capture
08-09 01:20 40m - / - RN6HK -10 / - 2 Partial capture
08-09 01:09 40m - / - G6OTZ -12 / - 2 ✓ Closing fragment
08-08 20:53 20m - / -13 DJ0MAB -15 / - 2 Partial capture
08-08 20:38 20m - / - IW4ELZ -14 / - 2 Partial capture
08-05 10:41 20m - / - ON1CB -24 / - 2 Partial capture
08-05 00:01 20m - / -5 F1PBZ -1 / - 2 Partial capture
08-03 10:33 20m - / -18 F1PSX -15 / - 6 Partial capture
07-28 10:51 20m - / - DL1R -4 / - 8 Partial capture
07-28 10:37 20m - / -13 GJ0KYZ -12 / - 2 ✓ Closing fragment
07-19 00:07 20m -6 / - AB5GC - / - 3 Partial capture
07-19 00:01 20m -6 / -6 9A4ZM +7 / -7 7 ✓ Full exchange observed
07-18 23:55 20m - / - YO3GNF -3 / - 4 Partial capture
07-16 00:44 40m - / -11 A61DD -16 / - 2 ✓ Closing fragment
07-11 21:03 20m - / -8 IK2WSA -13 / - 2 ✓ Closing fragment
07-11 21:01 20m - / -17 IK4LZH 0 / - 3 ✓ Closing fragment
07-11 20:45 20m - / - EJ8JCB -3 / - 3 Partial capture
07-11 01:08 40m - / -3 MW0USK 0 / - 6 ✓ Closing fragment
07-10 22:33 20m - / -6 DF2HZ -23 / - 2 ✓ Closing fragment
07-10 22:24 20m - / - HB9TIH -14 / - 5 Partial capture
07-10 22:23 20m - / - DF2HZ -23 / - 3 Partial capture
07-10 21:21 20m - / -8 DB1SO -12 / - 3 Partial capture
07-10 21:09 20m - / -19 4Z1GY -5 / - 5 ✓ Closing fragment
07-07 21:59 20m - / -9 GM3DRA -6 / - 4 ✓ Closing fragment
07-07 21:58 20m - / -24 MM3RCR -11 / - 5 Partial capture
07-07 21:22 20m - / - F5RAV -7 / - 4 Partial capture
07-07 17:29 20m - / -8 ON3NR -17 / - 3 ✓ Closing fragment
07-06 19:59 20m - / -21 EA1FUB -16 / - 5 Partial capture
07-05 23:21 20m - / - US2YW +2 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
110845  +5  524  KR4IJC LA6RJA -25 (x2)
111315 -11 1461  KR4IJC DL1SUZ JO53
111345  +1  523  KR4IJC LA6RJA -22 (x2)
111445  -9 1504  KR4IJC G1LQT -16 (x7)
223130 -10 1115  KR4IJC K8RAR EL97
020715 -16 1970  KR4IJC 5Z4VJ -07 (x2)
80m 
UTC    dB Audio  Message
002330 +12 1268  KR4IJC LZ1KU -15 (x3)
40m 
UTC    dB Audio  Message
011615 -18 2386  KR4IJC F1PBZ RR73
010930 -14  976  KR4IJC G6OTZ IO92 (x2)
011900  -7  960  KR4IJC F5PBG IN78
012030 -12  912  KR4IJC RN6HK LN14 (x2)
233400 -22 1906  KR4IJC F6BHK JN24
233930 -18 1180  KR4IJC RN6HK LN14
233930 -20 1375  KR4IJC G5TV IO93
234030 -17 1181  KR4IJC RN6HK LN14
234330 -17 1375  KR4IJC G5TV IO93
234400 -15 1069  KR4IJC DL3MIB JN57 (x2)
001530  -7  633  KR4IJC 9A4ZM JN86 (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.

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