HF0S — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO80

Receiver-side FT8 activity involving HF0S, decoded by SO8OO in southeastern Poland. 223 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-07-22.

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 223 FT8 messages attributed to HF0S as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (86%), followed by 80 m (14%). Most decodes (100%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

223
Messages attributed
3
UTC dates decoded
13
Active 15-min windows
-10 dB
Estimated median S/N

Bands

80m · 31 40m · 192
First attributed message: 2026-07-20
Last attributed message: 2026-07-22 17:09 UTC

Observed FT8 message patterns

Attributed sample
223 messages
Active dates
3 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-16 to +6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 33, moderate (-15 to -9 dB) 104, strong (≥ -8 dB) 86.

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 HF0S 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 HF0S

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
JO80 · 111 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
347 km (approx.)
Last such locator decoded
2026-07-22 17:09 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 UTCBandHF0S S/NCounterpartCounterpart S/NMsgsCapture
07-22 17:05 40m -8 / - SP5RZL - / -18 8 Partial capture
07-22 15:05 40m -9 / - DL9KM - / -5 3 Partial capture
07-22 15:03 40m -9 / +3 OM1JM -10 / +3 6 ✓ Full exchange observed
07-22 15:02 40m -10 / - DL0ERZ - / -6 2 ✓ Closing fragment
07-22 14:57 40m -12 / - E73KM - / -14 2 ✓ Closing fragment
07-22 14:55 40m -16 / - ON2SLC - / -8 2 ✓ Closing fragment
07-22 14:53 40m -16 / - RY2B - / -23 2 ✓ Closing fragment
07-22 14:49 40m -13 / - M9PMB - / -15 2 ✓ Closing fragment
07-22 14:47 40m -14 / - PE1CGG - / -7 2 ✓ Closing fragment
07-22 14:45 40m -16 / - SP3PM - / -15 2 ✓ Closing fragment
07-22 14:43 40m -17 / - S51CN - / +1 2 ✓ Closing fragment
07-22 14:42 40m -15 / - DB1PB - / -4 2 ✓ Closing fragment
07-22 14:38 40m -14 / - F5JAE - / -11 2 ✓ Closing fragment
07-22 14:33 40m -14 / - RU3OZ - / -3 2 ✓ Closing fragment
07-22 14:28 40m -10 / - DL6ZAJ - / +3 2 ✓ Closing fragment
07-22 14:27 40m -9 / - DK3HV - / - 2 ✓ Closing fragment
07-22 13:59 20m - / -8 UR5VOA -16 / - 2 ✓ Closing fragment
07-22 13:27 20m - / +1 RZ4FWA -14 / - 2 Partial capture
07-22 13:03 20m - / -8 RD6OW -13 / - 3 ✓ Closing fragment
07-22 12:30 20m - / -9 PA3BMB -13 / - 2 Partial capture
07-22 12:26 20m - / -13 UA4WJ -12 / - 2 ✓ Closing fragment
07-22 12:18 20m - / +7 PA3CPS -17 / - 3 ✓ Closing fragment
07-22 12:17 20m - / -11 PD0DEX -8 / - 3 ✓ Closing fragment
07-21 15:28 40m -12 / - YE4FNN - / - 2 Partial capture
07-21 15:26 40m -10 / - DC1SN - / - 2 ✓ Closing fragment
07-21 15:22 40m -11 / - UB1AXF - / -1 2 ✓ Closing fragment
07-21 15:20 40m -8 / - OM5BS -16 / - 5 ✓ Full exchange observed
07-21 15:19 40m -4 / +5 DM5JBN -9 / +7 2 Partial capture
07-21 15:18 40m -4 / - SQ8KMP - / +8 2 ✓ Closing fragment
07-21 15:13 40m -10 / - ON6SAT - / -3 2 ✓ Closing fragment
07-21 15:12 40m -10 / - PE1NZJ - / -20 2 ✓ Closing fragment
07-21 15:09 40m -9 / - UA4FKT - / -21 2 Partial capture
07-21 15:07 40m -6 / - LY1DY - / -6 2 ✓ Closing fragment
07-21 15:06 40m -7 / - DG1RMY - / -18 3 ✓ Closing fragment
07-21 15:03 40m -13 / - PD2JG - / -16 3 ✓ Closing fragment
07-21 15:00 40m -10 / - DA1ST - / +7 2 ✓ Closing fragment
07-21 14:58 40m -13 / - SP9CXN -18 / - 5 ✓ Full exchange observed
07-20 19:44 80m +9 / - SQ9MEZ - / - 11 Partial capture
07-20 19:42 80m +4 / -15 JG3TRB -15 / -14 6 ✓ Full exchange observed
07-20 19:41 80m +8 / -17 JH2FXK -20 / -15 5 ✓ Full exchange observed
07-20 19:39 80m +6 / - JG3TRB - / -19 2 Partial capture
07-20 19:36 80m - / - SQ8KMP +14 / - 3 Partial capture
07-20 19:36 80m - / - DL6EL -3 / - 3 Partial capture
07-20 19:33 80m +9 / - SQ9MEZ - / - 11 Partial capture
07-20 15:57 40m -4 / - HA8LKI - / -15 2 ✓ Closing fragment
07-20 15:53 40m -7 / - DD7EE - / - 2 ✓ Closing fragment
07-20 15:52 40m -6 / - DF5DY - / +4 2 ✓ Closing fragment
07-20 15:47 40m -8 / - IK8DYE - / -6 2 ✓ Closing fragment
07-20 15:46 40m -12 / - DG2LA - / 0 2 ✓ Closing fragment
07-20 15:44 40m -12 / - SP9CXN -7 / - 3 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
122700 -11 1428  HF0S UA4WJ 73
123030 -16 1660  HF0S PA3BMB R-09 (x2)
123600 -10 1479  HF0S 4Z4DX 73
123630 -24 1717  HF0S F4FSY -10
130300 -11 1477  HF0S RD6OW KN87 (x3)
131030 -13 1478  HF0S EA5JHD -12
132730 -14 2027  HF0S RZ4FWA R+01 (x2)
135800  -6 2855  HF0S DB5BC R-12
135900 -16 1477  HF0S UR5VOA R-08 (x2)
070430 -22 1768  HF0S HI8UD -05
40m 
UTC    dB Audio  Message
150430 -10 2660  HF0S OM1JM R+03
150445 -12 1614  OM1JM HF0S RR73
150545  -8 1614  DL9KM HF0S -05 (x3)
150715  -8 1614  CQ HF0S JO80 (x2)
170545  -8 1863  SP5RZL HF0S JO80 (x8)
80m 
UTC    dB Audio  Message
194315 -13  411  HF0S JG3TRB -15
194330  +2 1269  JG3TRB HF0S R-14
194345 -18  411  HF0S JG3TRB RR73
194400  +1 1269  JG3TRB HF0S 73
194430  +2 1269  SQ9MEZ HF0S JO80 (x11)

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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