KA4UFM — 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

Receiver-side FT8 activity involving KA4UFM, decoded by SO8OO in southeastern Poland. 6 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-08-20.

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 6 FT8 messages attributed to KA4UFM as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (67%), followed by 20 m (33%). In this small sample, the estimated median decoder S/N was -19 dB; no usual signal pattern is inferred.

Overview

6
Messages attributed
1
UTC dates decoded
2
Active 15-min windows
-19 dB
Estimated median S/N

Bands

40m · 4 20m · 2
First attributed message: 2026-08-20
Last attributed message: 2026-08-20 06:44 UTC

Observed FT8 message patterns

Attributed sample
6 messages
Active dates
1 UTC dates
Estimated median S/N
-19 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 0, 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).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with KA4UFM in decoded directed-looking exchanges:

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 UTCBandKA4UFM S/NCounterpartCounterpart S/NMsgsCapture
10-14 03:22 80m - / - PA3KUS -7 / - 5 Partial capture
10-14 02:08 60m - / - ON8WR -11 / - 3 Partial capture
10-14 02:07 60m - / - DG5PW -12 / - 5 Partial capture
10-13 04:31 60m - / -9 F4GAJ -5 / - 3 ✓ Closing fragment
10-13 04:08 40m - / - VP2MAA -9 / - 2 ✓ Closing fragment
10-13 03:40 80m - / - PA3KUS -4 / - 5 Partial capture
10-13 03:36 80m - / -14 F4BPO +13 / - 10 ✓ Closing fragment
10-13 03:31 80m - / -12 5B4AMX +2 / - 2 Partial capture
08-20 06:57 20m - / - PD0WL -7 / - 6 Partial capture
08-20 06:53 20m - / -15 IS0AWZ +6 / - 2 Partial capture
08-20 06:47 20m - / -10 EA7BD -12 / - 5 ✓ Closing fragment
08-20 06:44 20m - / - DB7GE 0 / - 2 Partial capture
08-20 06:41 20m - / - DL8ZBA -4 / - 3 Partial capture
08-20 06:40 20m - / -3 IZ5SIH -4 / - 3 ✓ Closing fragment
08-20 06:39 20m - / -12 DL3OCF -6 / - 2 Partial capture
08-20 06:38 20m -24 / -7 IK4TVP -15 / -6 3 ✓ Full exchange observed
08-20 06:37 20m - / -15 IK2WSA -10 / - 2 ✓ Closing fragment
08-20 06:36 20m - / -12 IU1CYA +2 / - 3 ✓ Closing fragment
08-20 06:30 20m - / - RD3FY -17 / - 2 Partial capture
08-20 04:10 40m - / -9 PA1PXL -2 / - 2 ✓ Closing fragment
08-20 04:10 40m - / +5 OS4K -21 / - 2 Partial capture
08-20 04:09 40m - / -8 F5NBU +13 / - 3 ✓ Closing fragment
08-20 03:35 40m - / - US1CR 0 / - 2 Partial capture
08-20 03:34 40m -20 / - NE5TX - / - 2 ✓ Closing fragment
08-20 03:29 40m - / - R2EC +10 / - 2 Partial capture
07-28 04:14 40m - / - DF3MC -13 / - 6 Partial capture
07-28 04:11 40m - / -10 DL3OCF -2 / - 2 ✓ Closing fragment
07-28 04:11 40m - / -8 YO6LM -6 / - 4 ✓ Closing fragment
07-28 04:08 40m - / -17 IK6DLK -19 / - 3 ✓ Closing fragment
07-28 04:08 40m - / -16 YO2LGK -12 / - 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
033830  +9 1077  KA4UFM F4BPO JN36 (x4)
034030  -8  614  KA4UFM PA3KUS JO21
034030 +12 1077  KA4UFM F4BPO 73
034100  -7  615  KA4UFM PA3KUS JO21 (x9)
60m 
UTC    dB Audio  Message
045830 -22 1423  KA4UFM EC3A -10
042215 -12 2220  KA4UFM IK4CBO R-13
043115  -4 2034  KA4UFM F4GAJ IN99 (x3)
020715 -11 1951  KA4UFM DG5PW JO30 (x2)
020815 -13 2103  KA4UFM ON8WR JO11
020815 -13 1951  KA4UFM DG5PW JO30
020845 -11 2103  KA4UFM ON8WR JO11
020845 -13 1951  KA4UFM DG5PW JO30
020915 -10 2104  KA4UFM ON8WR JO11
020915  -9 1951  KA4UFM DG5PW JO30
40m 
UTC    dB Audio  Message
033415 -19 1873  NE5TX KA4UFM +13 (x2)
033530  +1 2629  KA4UFM US1CR KN59 (x2)
034000 -18 1909  OA4ENG KA4UFM 73
040900 +15 2788  KA4UFM F5NBU JN28 (x2)
041000 -22 1931  KA4UFM OS4K +05
041000 +12 2788  KA4UFM F5NBU 73
041030  -1 2788  KA4UFM PA1PXL R-09 (x2)
041100 -20 1932  KA4UFM OS4K +05
043900  -9 1955  KA4UFM PE1NMM JO32
040815  -8  634  KA4UFM VP2MAA +12 (x2)
20m 
UTC    dB Audio  Message
064515  -2 2252  KA4UFM DB7GE JN39
064745  -9 1742  KA4UFM EA7BD IM77 (x3)
064845  +1 1077  KA4UFM DL3OCF -17
064915 -12 1742  KA4UFM EA7BD R-10 (x2)
065345  +6 1299  KA4UFM IS0AWZ -15 (x2)
065700  -6 2380  KA4UFM PD0WL JO21 (x6)

CW

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

Explore CW reception at SO8OO

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