YU1FW — 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 YU1FW, decoded by SO8OO in southeastern Poland. 1,033 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 60 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-11-04.

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 1,033 FT8 messages attributed to YU1FW as the transmitting token by decoded message structure across 60 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 40 m (20%) and 60 m (15%). Most decodes (77%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +2 dB.

Overview

1,033
Messages attributed
60
UTC dates decoded
155
Active 15-min windows
+2 dB
Estimated median S/N

Bands

80m · 581 60m · 153 40m · 211 20m · 87 10m · 1
First attributed message: 2026-06-10
Last attributed message: 2026-11-04 20:12 UTC

Observed FT8 message patterns

Attributed sample
1,033 messages
Active dates
60 UTC dates
Estimated median S/N
+2 dB
Estimated 10th-90th percentile
-13 to +14 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 70, moderate (-15 to -9 dB) 120, strong (≥ -8 dB) 843.

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 YU1FW 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 YU1FW

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 · 783 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
608 km (approx.)
Last such locator decoded
2026-11-04 20:12 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 UTCBandYU1FW S/NCounterpartCounterpart S/NMsgsCapture
11-04 20:10 80m -2 / - DL40EUDXF - / - 3 Partial capture
11-04 20:09 80m +1 / - LZ911TD - / - 4 Partial capture
11-04 20:04 80m +2 / - RU4CK/P - / -4 2 Partial capture
10-31 22:45 60m - / - EA7GD -12 / - 2 Partial capture
10-31 22:32 60m - / - DL1MST -6 / - 5 Partial capture
10-31 21:20 60m - / - F6FHZ -16 / - 5 Partial capture
10-27 16:32 80m -2 / - XX9TXN - / -15 10 ✓ Closing fragment
10-27 16:21 80m -8 / - XX9TXN - / - 12 Partial capture
10-26 17:23 60m - / - DM5ME -6 / - 2 Partial capture
10-26 17:22 60m - / - SP2EWQ -4 / - 3 Partial capture
10-26 17:20 60m -8 / - ZS1DX - / -8 4 ✓ Closing fragment
10-26 16:06 60m -10 / - E79AI - / -6 2 ✓ Closing fragment
10-26 16:05 60m -8 / - 9H1CG - / - 2 Partial capture
10-26 16:04 60m -9 / - EA7LAF - / -11 2 Partial capture
10-26 16:03 60m -10 / - EW1CD - / - 2 Partial capture
10-26 16:00 60m -8 / - EY7BJ - / - 3 Partial capture
10-23 21:18 60m - / - F6FHZ -22 / - 2 Partial capture
10-23 19:58 60m - / - DL6EI -8 / - 2 Partial capture
10-23 19:56 60m - / - DF2RQ +14 / - 2 ✓ Closing fragment
10-23 19:56 60m - / - DL1CF +6 / - 10 Partial capture
10-22 18:10 60m -16 / - <...> - / +4 2 Partial capture
10-18 19:16 40m - / - DJ0MAB +2 / - 2 Partial capture
10-18 15:49 60m +16 / - H49A - / -12 5 ✓ Closing fragment
10-18 14:59 60m -1 / - H49A - / - 2 Partial capture
10-18 14:51 60m -4 / - H49A - / - 7 Partial capture
10-16 20:58 40m - / - G4DBW -4 / - 2 Partial capture
10-06 17:28 80m +10 / - BX4AP - / - 5 Partial capture
10-06 17:12 80m +4 / - BX4AP - / - 12 Partial capture
10-06 17:10 80m +5 / - BX4AQ - / - 3 Partial capture
10-02 23:33 40m - / - RD3FY -9 / - 3 Partial capture
10-02 18:27 80m +14 / - FK8HC - / -13 9 Partial capture
10-02 18:24 80m +16 / - AP2HA - / -13 4 ✓ Closing fragment
10-02 18:19 80m +17 / - BX4AP - / - 8 Partial capture
10-02 18:14 80m +12 / - ZL2BBR - / -13 6 ✓ Closing fragment
10-01 19:22 80m +12 / - IQ9SZ/7 - / - 4 Partial capture
10-01 19:15 80m +12 / - JD1BOI - / - 4 Partial capture
10-01 18:58 80m +6 / - BD8ENU - / - 9 Partial capture
10-01 15:31 80m +5 / - YE4FNN - / -15 10 ✓ Closing fragment
10-01 15:25 80m +5 / - BV7RN - / - 12 Partial capture
09-30 19:37 80m +12 / - JD1BOI - / - 10 Partial capture
09-29 19:23 80m +10 / - OL900LTV - / - 3 Partial capture
09-29 19:17 80m +5 / - OL900LTV - / - 3 Partial capture
09-28 19:52 80m +20 / - KG6JDX - / -26 4 Partial capture
09-28 19:46 80m +4 / - 7Z1DH - / -26 3 Partial capture
09-28 17:34 80m +6 / -6 TK4QP 0 / -6 4 ✓ Full exchange observed
09-28 17:27 80m +7 / - BG2GWN - / - 10 Partial capture
09-28 17:01 80m -1 / - ZS6BUN - / -21 4 ✓ Closing fragment
09-28 17:00 80m - / - R3HH -7 / - 2 Partial capture
09-28 16:59 80m -1 / -16 UA3FO -8 / - 4 ✓ Closing observed
09-28 16:59 80m - / - R3ICU -13 / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
163445  -3  979  XX9TXN YU1FW KN04 (x6)
200430  +2 1221  RU4CK/P YU1FW KN04 (x2)
200945  +3 1220  LZ911TD YU1FW KN04 (x2)
201045  +2 1219  <DL40EUDXF> YU1FW KN04 (x3)
201215  -1 1220  LZ911TD YU1FW KN04 (x2)
60m 
UTC    dB Audio  Message
212100 -15 1952  YU1FW F6FHZ JN18 (x4)
223230 -10 1470  YU1FW DL1MST JO30
223300  +2  264  YU1FW PA4PA -15
223300  -8 1470  YU1FW DL1MST JO30 (x4)
223600 -11  638  YU1FW 6W/IK2HKT -15
224030 -10  638  YU1FW RR73; DF2RG <...> -18
224530 -15 1066  YU1FW EA7GD IM67 (x3)
40m 
UTC    dB Audio  Message
185600  +0 1095  KH8WW YU1FW KN04 (x6)
233130 -14  634  YU1FW 3Z4DX R-25
233330  -4 1764  YU1FW RD3FY KO85 (x3)
233500 -10  634  YU1FW 3Z4DX RR73
205845  -5 2275  YU1FW G4DBW JO01 (x2)
191600  +2 1187  YU1FW DJ0MAB JN49 (x2)
20m 
UTC    dB Audio  Message
184715 -14 1262  RZ3Z/P YU1FW KN04
155915 -11 1003  YU1FW JA6VQA PM53 (x3)
070515 -17 1279  <...> YU1FW KN04 (x2)
190000 -20 1771  YU1FW 7Z1DX -16 (x2)
170030  -2 1560  BH4THI YU1FW KN04 (x4)
223045 -12  721  YU1FW IS0LLL -11 (x2)
204800 -12 1883  OO0O YU1FW KN04
10m 
UTC    dB Audio  Message
121245 -22 1096  EU1EU YU1FW KN04
120215  +2 1717  YU1FW OE2VEL +16 (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.

CW

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

Explore CW reception at SO8OO

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