YO3FFE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN23

Receiver-side FT8 activity involving YO3FFE, decoded by SO8OO in southeastern Poland. 373 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 35 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-11.

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 373 FT8 messages attributed to YO3FFE 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 (55%), followed by 20 m (38%) and 80 m (6%). Several six-hour UTC windows tied for the largest share (73%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

373
Messages attributed
35
UTC dates decoded
79
Active 15-min windows
-11 dB
Estimated median S/N

Bands

80m · 22 40m · 206 20m · 141 10m · 4
First attributed message: 2026-06-08
Last attributed message: 2026-09-11 05:31 UTC

Observed FT8 message patterns

Attributed sample
373 messages
Active dates
35 UTC dates
Estimated median S/N
-11 dB
Estimated 10th-90th percentile
-20 to +1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 102, moderate (-15 to -9 dB) 134, strong (≥ -8 dB) 137.

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 YO3FFE 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 YO3FFE

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
KN23 · 239 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
756 km (approx.)
Last such locator decoded
2026-09-11 05:31 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 UTCBandYO3FFE S/NCounterpartCounterpart S/NMsgsCapture
09-11 05:29 40m -6 / - PV8AJ - / - 3 Partial capture
09-11 05:21 80m -7 / -18 SP7VCL +12 / -19 6 ✓ Full exchange observed
09-11 05:20 80m -12 / -15 HF100PKP +11 / - 4 Partial capture
09-04 20:01 40m -3 / - JH1CCN - / -18 2 Partial capture
09-04 19:41 80m -10 / - RA9SOZ - / -12 6 Partial capture
09-04 19:20 80m -16 / +1 YO4GIY -3 / +4 5 ✓ Full exchange observed
09-04 19:13 80m -5 / -10 DK7ZT +2 / -4 6 Partial capture
09-04 19:12 80m -2 / -11 UA4FKT +10 / - 5 ✓ Closing observed
09-04 19:11 80m -7 / -15 DO5HOK +2 / -16 4 ✓ Full exchange observed
09-04 12:56 40m -1 / - IU3BIX - / - 4 Partial capture
09-04 12:53 40m -11 / +10 HA3HM -18 / -17 6 ✓ Full exchange observed
09-04 12:50 40m -5 / - SP7OK - / - 3 Partial capture
08-24 06:03 40m -1 / -8 GJ0KYZ -8 / - 17 Partial capture
08-24 06:02 40m -6 / - YO3WST - / - 3 Partial capture
08-21 14:17 10m - / -14 DF7EE -8 / - 3 Partial capture
08-21 14:09 10m -21 / - OZ5VO - / -16 4 Partial capture
08-16 07:48 20m -11 / - F4HTA - / - 7 Partial capture
08-16 07:29 20m - / +7 SV5AZK -19 / - 2 ✓ Closing fragment
08-16 07:06 40m -18 / - YO2LFP - / - 2 Partial capture
08-07 07:05 40m - / -3 OE4BHF -13 / - 2 ✓ Closing fragment
08-07 07:01 40m -16 / - OE4BHF - / - 2 Partial capture
08-01 09:06 20m - / -10 PC2K -8 / - 2 ✓ Closing fragment
07-28 05:23 40m - / -9 HA1ZW -8 / - 2 ✓ Closing fragment
07-27 05:01 40m -16 / - YR50NADIA - / - 2 Partial capture
07-25 04:13 20m -7 / - IZ0AIO - / - 2 Partial capture
07-25 04:09 20m -4 / - T77BL - / - 2 Partial capture
07-23 05:15 20m -16 / - KC9USW - / - 9 Partial capture
07-23 05:02 40m -20 / -12 9A/YO9AMO -11 / 0 4 Partial capture
07-22 03:54 40m -10 / - <...> - / - 2 Partial capture
07-20 05:53 20m -6 / - HC2GRC - / - 6 Partial capture
07-20 05:31 20m -5 / - TL8GD - / -20 11 Partial capture
07-20 05:25 40m -11 / - VE2OPR - / - 7 Partial capture
07-20 05:11 40m -16 / - OY1R - / -17 12 Partial capture
07-20 05:09 40m -14 / - VE2OPR - / - 2 Partial capture
07-15 06:26 20m -19 / - DG0KT - / -12 3 Partial capture
07-15 06:22 20m -19 / - SV1MNE - / - 3 Partial capture
07-15 06:16 40m -22 / - F4FSY - / -9 2 ✓ Closing fragment
07-15 06:11 40m - / -9 ON5HE -10 / - 2 ✓ Closing fragment
07-13 05:07 20m -11 / - A61DD - / - 4 Partial capture
07-11 19:10 20m - / - DL6EL -10 / - 2 Partial capture
07-10 05:11 40m -12 / - YO8CLX -15 / -2 4 ✓ Full exchange observed
07-10 05:07 40m -21 / - CN2DX - / - 2 Partial capture
07-05 18:31 20m -12 / - 8A1WWA - / - 2 Partial capture
07-04 05:11 40m -22 / - IU8QGL - / -5 2 ✓ Closing fragment
07-04 05:08 40m -18 / +4 PI4DX -15 / +1 4 ✓ Full exchange observed
07-03 18:41 20m -9 / - EA5IY - / -1 2 ✓ Closing fragment
07-03 18:37 20m -22 / - EG4WWA - / -17 2 Partial capture
07-03 18:25 20m -7 / - BY6SX - / -11 3 ✓ Closing fragment
07-03 18:15 20m -20 / - 3A2MW - / -22 4 Partial capture
07-03 18:08 20m -15 / -13 3A2MW -20 / - 7 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
125330 -19 1742  YO3FFE HA3HM +15
125345 -15 1742  HA3HM YO3FFE KN23
125400 -17 1742  YO3FFE HA3HM +10
125415 -10 1743  HA3HM YO3FFE R-17 (x2)
125600  +2  427  IU3BIX YO3FFE KN23 (x4)
130000  -6  890  S58MU YO3FFE KN23
200130  -6 1452  JH1CCN YO3FFE R-18 (x2)
052900 -10 1345  PV8AJ YO3FFE KN23 (x3)
80m 
UTC    dB Audio  Message
194330 -16 1198  RA9SOZ YO3FFE R-07 (x2)
051315  -2 1957  CQ YO3FFE KN23 (x2)
051645  -3 2019  EA6Y YO3FFE KN23
052030 -12 1298  HF100PKP YO3FFE KN23
052045 +10 1298  YO3FFE HF100PKP -15 (x2)
052145  -7 1203  SP7VCL YO3FFE KN23
052145 +11 1298  YO3FFE HF100PKP -15
052200 +13 1204  YO3FFE SP7VCL -18
052215  -6 1203  SP7VCL YO3FFE R-19
052230 +13 1204  YO3FFE SP7VCL RR73
052245  -8 1203  SP7VCL YO3FFE R-19
052300 +11 1204  YO3FFE SP7VCL RR73
10m 
UTC    dB Audio  Message
200430 -12  708  YO3FFE UR3QCB KN77
200500 -10  710  YO3FFE UA4FKT LO23 (x2)
200530 -16 1615  YO3FFE RW6HP LN14
071330 -14 1476  YO3FFE TK4BB RR73
140945 -23 1746  OZ5VO YO3FFE KN23 (x4)
141730 -12 1257  YO3FFE DF7EE JO40 (x3)
20m 
UTC    dB Audio  Message
041400  -5 2284  IZ0AIO YO3FFE KN23
044115 -16 2132  XE2V YO3FFE KN23
090645  -9 1575  YO3FFE PC2K -10 (x2)
145700  -9 1133  MM0TBH YO3FFE R-20
072900 -19 1458  YO3FFE SV5AZK +07 (x2)
074800 -10  949  F4HTA YO3FFE KN23 (x7)
092630 -21 1271  YO3FFE HA1BF -10

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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