KR4DJY — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM14

Receiver-side FT8 activity involving KR4DJY, decoded by SO8OO in southeastern Poland. 23 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-09-01 and 2026-09-16.

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 23 FT8 messages attributed to KR4DJY as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 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 -17 dB.

Overview

23
Messages attributed
4
UTC dates decoded
9
Active 15-min windows
-17 dB
Estimated median S/N

Bands

40m · 23
First attributed message: 2026-09-01
Last attributed message: 2026-09-16 02:17 UTC

Observed FT8 message patterns

Attributed sample
23 messages
Active dates
4 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-22 to -9 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 8, strong (≥ -8 dB) 2.

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 KR4DJY 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 KR4DJY

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
FM14 · 7 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,713 km (approx.)
Last such locator decoded
2026-09-16 01:56 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 UTCBandKR4DJY S/NCounterpartCounterpart S/NMsgsCapture
09-20 04:37 40m - / -14 DL3OCF +8 / - 2 Partial capture
09-20 04:35 40m - / -13 DL3MIB +12 / - 5 ✓ Closing fragment
09-20 04:32 40m - / - YO4GIY -8 / - 2 Partial capture
09-20 04:30 40m - / -4 F4PCM 0 / - 3 ✓ Closing fragment
09-20 04:13 40m - / - EA5D -9 / - 2 Partial capture
09-20 04:07 40m - / -7 IK2YJC -3 / - 10 ✓ Closing fragment
09-20 04:07 40m - / -4 OS4K -12 / - 4 ✓ Closing fragment
09-20 04:07 40m - / -11 YO4NF -2 / - 2 ✓ Closing fragment
09-20 04:05 40m - / - IU0RBF -5 / - 3 Partial capture
09-16 01:46 40m -12 / - SP5EXA -14 / -7 3 ✓ Closing observed
09-15 05:35 40m - / -14 PD1AC -13 / - 4 ✓ Closing fragment
09-15 05:23 40m - / -7 DL3OCF -13 / - 2 Partial capture
09-15 05:16 40m - / - IV3GOW -3 / - 8 Partial capture
09-15 05:15 40m - / -16 DL3OCF 0 / - 4 Partial capture
09-15 05:15 40m - / -14 G0OYQ -7 / - 3 ✓ Closing fragment
09-15 04:53 40m - / -15 HB9IRO -14 / - 2 ✓ Closing fragment
09-15 04:50 40m - / -11 DL5DQZ +7 / - 14 ✓ Closing fragment
09-12 04:39 40m - / -9 IK4TVP +5 / - 4 ✓ Closing fragment
09-12 04:20 40m - / - LZ2VQ -8 / - 2 Partial capture
09-12 04:09 40m - / -8 CR7BRV -11 / - 4 Partial capture
09-12 04:06 40m -18 / - SQ7OBB - / -23 2 Partial capture
09-12 04:05 40m -18 / - EA2DYB -9 / -14 2 Partial capture
09-10 02:41 40m -6 / - N3FMC - / -3 2 ✓ Closing fragment
09-10 02:36 40m - / -16 EI2IXB +2 / - 3 Partial capture
09-04 04:01 40m - / -18 RZ6L +1 / - 2 ✓ Closing fragment
09-04 03:56 40m - / -2 WA4FU -8 / - 3 ✓ Closing fragment
09-04 03:50 40m - / - PA3KUS -2 / - 2 Partial capture
09-04 03:50 40m - / -16 OK1ZCF -5 / - 5 Partial capture
09-04 03:50 40m - / -1 ON1JP -20 / - 2 Partial capture
09-04 03:42 40m - / -16 DL7VAR +3 / - 8 ✓ Closing fragment
09-04 03:42 40m - / - SP2GCJ +8 / - 2 Partial capture
09-04 03:40 40m - / - PA3KUS -4 / - 5 Partial capture
09-04 03:40 40m - / - SP3CUG 0 / - 7 Partial capture
09-01 01:14 40m - / - UA4FKT +9 / - 3 Partial capture
09-01 01:12 40m - / -9 EA1CQ -19 / - 2 ✓ Closing fragment
09-01 01:11 40m - / -8 IZ8EYN -5 / - 5 Partial capture
09-01 01:10 40m - / - OO0O -5 / - 12 Partial capture
08-29 02:33 40m - / - DG5PW -10 / - 3 Partial capture
08-27 02:07 20m - / -11 F1PBZ 0 / - 2 ✓ Closing fragment
08-27 01:49 20m - / -3 IK2ZJR +11 / - 3 ✓ Closing fragment
08-25 03:27 20m - / -7 DL3MIB +11 / - 7 ✓ Closing fragment
08-23 04:31 40m - / -7 DK7ZT -3 / - 2 Partial capture
08-23 03:30 40m - / -24 F4VTR -1 / - 6 Partial capture
08-16 02:32 40m - / -14 RN6MA 0 / - 4 Partial capture
08-11 00:41 40m - / - S52D -8 / - 2 Partial capture
08-06 01:04 40m - / - F5RRS -18 / - 4 Partial capture
07-28 05:05 40m - / -19 DL3OCF -15 / - 2 Partial capture
07-28 04:44 40m - / - HA5VQ -17 / - 3 Partial capture
07-28 03:06 40m - / -15 OZ1KEF -1 / - 3 ✓ Closing fragment
07-28 02:58 40m - / - DJ0MAB -3 / - 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
041330  -8 2073  KR4DJY EA5D JN00 (x2)
043030  +0 1252  KR4DJY F4PCM JN23 (x3)
043200  -7 1849  KR4DJY YO4GIY KN43 (x2)
043530 +14  951  KR4DJY DL3MIB JN57 (x4)
043730  +8  259  KR4DJY DL3OCF -14
043730 +11  951  KR4DJY DL3MIB 73
043800  +9  260  KR4DJY DL3OCF JO51
044100  +0 1252  KR4DJY GJ0KYZ -10
20m 
UTC    dB Audio  Message
211915 -17 2227  KR4DJY V31MA RR73
222545 -10  394  KR4DJY EA8BBJ -16 (x2)
032700 +13 1110  KR4DJY DL3MIB JN57 (x7)
014900  +7 2833  KR4DJY IK2ZJR JN45 (x3)
020730 -10  675  KR4DJY F1PBZ -11 (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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