YU4NMT — 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: Serbia Most frequent locator attributed to this token: KN04

Receiver-side FT8 activity involving YU4NMT, decoded by SO8OO in southeastern Poland. 237 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 35 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-09-27.

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 237 FT8 messages attributed to YU4NMT as the transmitting token by decoded message structure across 35 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 80 m (39%) and 20 m (11%). Most decodes (82%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.1 dB.

Overview

237
Messages attributed
35
UTC dates decoded
77
Active 15-min windows
-9.1 dB
Estimated median S/N

Bands

80m · 93 40m · 107 20m · 26 10m · 11
First attributed message: 2026-06-09
Last attributed message: 2026-09-27 15:48 UTC

Observed FT8 message patterns

Attributed sample
237 messages
Active dates
35 UTC dates
Estimated median S/N
-9.1 dB
Estimated 10th-90th percentile
-21 to +3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 61, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 114.

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 YU4NMT 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 YU4NMT

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
KN04 · 105 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
608 km (approx.)
Last such locator decoded
2026-09-21 05:21 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 UTCBandYU4NMT S/NCounterpartCounterpart S/NMsgsCapture
09-21 05:48 40m -6 / +1 S51WB -14 / - 2 Partial capture
09-21 05:45 40m - / +4 YO6LM +8 / - 4 ✓ Closing fragment
09-21 05:43 40m - / -16 RD3FY -18 / - 3 ✓ Closing fragment
09-21 05:43 40m - / -20 UR9QQ -6 / - 5 ✓ Closing fragment
09-21 05:43 40m -14 / - YL2JZ -8 / -18 2 ✓ Closing observed
09-21 05:21 40m -3 / -11 LX1TI +8 / +6 5 ✓ Full exchange observed
09-19 08:15 40m -12 / - SQ100PKP - / - 2 Partial capture
09-18 09:23 40m -4 / - II6IGTO - / - 3 Partial capture
09-16 21:12 80m - / -12 II9IABJ +2 / - 3 Partial capture
09-15 20:20 80m +4 / - EM90ZMV - / - 4 Partial capture
09-15 20:18 80m +2 / - 9A9N -7 / - 3 ✓ Closing observed
09-15 20:10 80m -5 / -3 II9IAGM +2 / - 2 Partial capture
09-15 20:08 80m -10 / -15 3Z100PKP +13 / -22 3 Partial capture
09-15 20:06 80m -6 / - SV8/F6BLP - / +5 2 Partial capture
09-02 08:00 40m -10 / - SV2KD - / +8 2 ✓ Closing fragment
09-02 07:59 40m -9 / - TK5NJ - / -2 3 ✓ Closing fragment
09-01 19:26 40m +2 / +1 4O4DB -4 / -2 5 ✓ Full exchange observed
09-01 19:20 40m -9 / - 8Z1IT - / -17 7 ✓ Closing fragment
09-01 19:09 40m -10 / -1 <...> -17 / -5 2 Partial capture
09-01 07:11 40m - / - OE1AVO -1 / - 4 Partial capture
09-01 06:47 40m - / -19 R2FDU -2 / - 2 Partial capture
08-30 19:41 40m +8 / -23 MW3FLI -1 / - 7 Partial capture
08-30 17:09 40m - / -14 S56LKP -6 / - 3 ✓ Closing fragment
08-30 17:02 40m - / -16 R9SAP -6 / - 4 ✓ Closing fragment
08-28 16:48 20m - / - UA3FO -4 / - 2 ✓ Closing fragment
08-28 16:47 20m - / -10 EX7DY -4 / - 2 ✓ Closing fragment
08-28 16:37 40m 0 / -7 <...> +8 / +7 9 ✓ Closing fragment
08-25 21:17 80m -12 / -8 <...> +6 / -9 3 Partial capture
08-25 20:55 40m -8 / - HB10GBT - / -9 2 Partial capture
08-25 20:17 20m - / -11 UN0GY 0 / - 2 ✓ Closing fragment
08-25 08:44 20m - / -4 F4AXK +7 / - 3 ✓ Closing fragment
08-25 07:53 20m - / - DL1R +2 / - 8 Partial capture
08-25 07:46 20m - / 0 F1MBL -7 / - 3 ✓ Closing fragment
08-25 07:46 20m - / - F4LSL -8 / - 2 Partial capture
08-25 07:33 40m - / -4 UX7QV -1 / - 3 ✓ Closing fragment
08-25 07:28 40m -6 / - IW2DNI - / -10 2 ✓ Closing fragment
08-25 07:28 40m -6 / -3 UT4PA -1 / -14 5 ✓ Full exchange observed
08-22 19:35 20m -10 / - BG7BVI - / - 2 Partial capture
08-16 20:25 20m - / -21 R5AJ -7 / - 3 Partial capture
08-16 20:20 20m - / -8 F4DWY -2 / - 2 Partial capture
08-16 20:13 20m - / -21 DJ0ABM -13 / - 2 ✓ Closing fragment
08-16 10:00 20m - / -14 EA1EBS -19 / - 3 ✓ Closing fragment
08-16 09:34 10m - / -4 M0BEW -2 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
092215  -9  994  YU4NMT HB10GBT -01
093400  -4  518  YU4NMT M0BEW -04 (x2)
081300 -14 1258  OO9A YU4NMT KN04
081415 -12 1258  DN9BT YU4NMT 73
115730 -20 1165  YU4NMT S9R -01
40m 
UTC    dB Audio  Message
054345 -23 2263  YU4NMT RD3FY KO85
054415  -6 2583  YU4NMT UR9QQ KN77
054415 -15 2263  YU4NMT RD3FY R-16
054445  -7 2583  YU4NMT UR9QQ KN77
054445 -17 2263  YU4NMT RD3FY 73
054515  -7 2583  YU4NMT UR9QQ R-20
054545 +13 2665  YU4NMT YO6LM KN25
054545  -6 2583  YU4NMT UR9QQ 73
054615  +7 2665  YU4NMT YO6LM KN25 (x3)
054830  -6 1212  S51WB YU4NMT +12
054845 -14  742  YU4NMT S51WB R+01
154830 -24 2035  9A3MRN YU4NMT 73
155000  -5 1494  YU4NMT SO100PKP -05
80m 
UTC    dB Audio  Message
201045  -5  808  II9IAGM YU4NMT KN04
201100  +2  807  YU4NMT II9IAGM -03
201245 -15 1616  RD0L/3 YU4NMT KN04
201330 -19 1611  YU4NMT UF6V/UA5D -08
201845  -1  625  9A9N YU4NMT KN04
201930  -7  620  YU4NMT 9A9N RR73
201945  +6  625  9A9N YU4NMT 73
202030  +4  375  EM90ZMV YU4NMT KN04 (x4)
205315  +7 1065  TK/4O7CC YU4NMT KN04
211230  -1 1060  YU4NMT II9IABJ -12 (x3)
20m 
UTC    dB Audio  Message
075530  -4 2658  YU4NMT DL1R JN58 (x4)
084445  +9  716  YU4NMT F4AXK IN96 (x3)
201730  -4 2416  YU4NMT UN0GY -11 (x2)
202730 -22 2362  YU4NMT K1SM RR73
164700  -3  337  YU4NMT EX7DY -10 (x2)
164830  -8 2095  YU4NMT UA3FO KO94 (x2)
193145  +3 2014  YU4NMT GM3CQD -13

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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