KZ4MW — 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: EM85

Receiver-side FT8 activity involving KZ4MW, decoded by SO8OO in southeastern Poland. 50 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 16 UTC dates in the available aggregate history. Observed between 2026-07-11 and 2026-10-03.

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 50 FT8 messages attributed to KZ4MW as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (52%), followed by 80 m (24%) and 40 m (20%). Most decodes (94%) fell within the six-hour window 22:00-04:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (82%); the estimated median was -21 dB.

Overview

50
Messages attributed
16
UTC dates decoded
27
Active 15-min windows
-21 dB
Estimated median S/N

Bands

80m · 12 60m · 2 40m · 10 20m · 26
First attributed message: 2026-07-11
Last attributed message: 2026-10-03 03:01 UTC

Observed FT8 message patterns

Attributed sample
50 messages
Active dates
16 UTC dates
Estimated median S/N
-21 dB
Estimated 10th-90th percentile
-24 to -12 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 41, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 3.

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 KZ4MW 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 KZ4MW

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
EM85 · 2 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
7,995 km (approx.)
Last such locator decoded
2026-09-29 03:49 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 UTCBandKZ4MW S/NCounterpartCounterpart S/NMsgsCapture
10-21 03:13 40m - / -7 IS0AWZ -10 / - 2 Partial capture
10-18 01:45 40m - / -18 RK6A +19 / - 3 Partial capture
10-13 06:33 80m - / -19 G0HVQ -12 / - 3 ✓ Closing fragment
10-13 06:30 80m - / -11 EA1DR -10 / - 2 ✓ Closing fragment
10-13 06:28 80m - / -16 F1PBZ +8 / - 3 ✓ Closing fragment
10-06 01:17 80m - / - F4UJU +14 / - 3 Partial capture
10-05 02:05 80m - / -20 E75C +7 / - 2 Partial capture
10-05 01:56 80m - / -19 F4EGM -3 / - 4 Partial capture
10-05 01:43 80m - / - EA7Z 0 / - 2 Partial capture
10-05 01:43 80m - / -8 F5RAV -5 / - 3 ✓ Closing fragment
10-05 01:30 80m - / - EA7Z +4 / - 2 Partial capture
10-04 01:38 40m - / -13 PT7YV -2 / - 2 ✓ Closing fragment
10-04 01:24 60m - / - DL7FE -5 / - 3 Partial capture
10-04 01:23 60m - / -9 EA3AKY -4 / - 5 ✓ Closing fragment
10-04 01:22 60m - / - F5MXH -7 / - 5 Partial capture
10-03 03:26 60m - / -7 IT9VCE -18 / - 4 ✓ Closing fragment
10-03 03:13 60m - / -9 F5RRS -2 / - 2 ✓ Closing fragment
10-03 03:08 60m - / - F5RRS +9 / - 4 Partial capture
10-03 03:06 60m - / -4 DL5DQZ -8 / - 17 Partial capture
10-03 03:06 60m - / - SP3CUG -11 / - 5 Partial capture
10-03 03:05 60m - / - ON7KEI -19 / - 4 Partial capture
10-03 03:04 60m - / - F5MXH -3 / - 2 Partial capture
10-02 02:35 40m - / - F4BYA +14 / - 4 Partial capture
10-01 02:45 80m - / - G1CEC -17 / - 3 Partial capture
10-01 02:24 60m - / -15 EA5JKB -9 / - 3 ✓ Closing fragment
10-01 02:23 60m - / - PC2J -4 / - 2 Partial capture
10-01 02:18 60m - / -9 EA3NE +4 / - 3 ✓ Closing fragment
10-01 02:17 60m - / -12 DL1USB 0 / - 3 ✓ Closing fragment
10-01 02:15 60m - / -13 LY3BRA -18 / - 2 ✓ Closing fragment
10-01 02:03 60m - / -4 G0AZH -7 / - 3 ✓ Closing fragment
09-30 03:23 80m -20 / -18 DK5WL -5 / -15 3 ✓ Full exchange observed
09-30 03:19 80m - / - DK5WL +2 / - 3 Partial capture
09-30 03:18 80m - / - F4BPO +12 / - 2 Partial capture
09-30 03:18 80m - / -25 OH1MLZ +7 / - 2 ✓ Closing fragment
09-29 04:01 80m - / - CT2GQA -11 / - 4 Partial capture
09-29 03:18 80m - / -18 EC3A -5 / - 9 ✓ Closing fragment
09-29 02:56 80m - / -25 DL1STG +10 / - 2 ✓ Closing fragment
09-29 02:47 80m - / - SP1MGM +6 / - 2 Partial capture
09-29 02:45 80m - / - DO5PY +5 / - 3 Partial capture
09-29 02:44 80m - / -17 UT5ECZ +10 / - 4 Partial capture
09-29 02:40 80m - / - CT2GQA -13 / - 6 Partial capture
09-29 02:38 80m - / -13 F1PBZ +2 / - 3 Partial capture
09-26 03:33 80m - / - F5RRS -17 / - 2 Partial capture
09-26 01:25 80m - / -16 DK1ML +4 / - 2 Partial capture
09-26 00:09 80m - / - PA3KUS -6 / - 6 Partial capture
09-25 23:52 80m - / -23 DK9WI +10 / - 2 ✓ Closing fragment
09-25 03:28 80m - / -15 EC6DX -15 / - 5 ✓ Closing fragment
09-25 02:20 40m - / -12 F4CQS +5 / - 5 Partial capture
09-25 02:04 40m - / - KS4OT -10 / - 4 Partial capture
09-22 03:46 40m - / - HB9IRO +12 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
022115  +3 2486  KZ4MW F4CQS -12 (x3)
033900  +4 2415  KZ4MW F4EGM JN29
023515 +15 2883  KZ4MW F4BYA JN19 (x4)
013815  -2 2458  KZ4MW PT7YV R-13 (x2)
014515 +15 2766  KZ4MW RK6A R-18 (x3)
031330 -11 1362  KZ4MW IS0AWZ R-07 (x2)
80m 
UTC    dB Audio  Message
020615  +8 2187  KZ4MW E75C R-20
011730 +13 2448  KZ4MW F4UJU JN06 (x3)
030200  -1 2448  KZ4MW F5PBG IN78
062845 +10  453  KZ4MW F1PBZ -16 (x3)
063015 -16 2455  KZ4MW F5PBG IN78
063015 -12 2107  KZ4MW EA1DR -11 (x2)
063315 -18 2370  KZ4MW G0HVQ IO81 (x3)
063645 -16 2454  KZ4MW F5PBG IN78
60m 
UTC    dB Audio  Message
032715 -17 1442  KZ4MW IT9VCE R-07 (x2)
012215  -9 2480  KZ4MW F5MXH JN07 (x3)
012315  -4 2290  KZ4MW EA3AKY JN01 (x2)
012415  -7 2480  KZ4MW F5MXH JN07
012415  -6 2290  KZ4MW EA3AKY 73
012415  -4 2064  KZ4MW DL7FE JN49
012445  -7 2480  KZ4MW F5MXH JN07
012445  -7 2290  KZ4MW EA3AKY JN01
012445 -10 2064  KZ4MW DL7FE JN49
012515  -1 2290  KZ4MW EA3AKY R+01
012515  +0 2064  KZ4MW DL7FE JN49
20m 
UTC    dB Audio  Message
232945 -22 1469  5Z4VJ KZ4MW -14 (x3)
215045  -9 2323  KZ4MW AA1BS R-14 (x4)
220130 -23 1431  5Z4VJ KZ4MW -16 (x7)
220630 -23 1431  KC0FSH KZ4MW -17

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

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

Explore CW reception at SO8OO

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