F4DIF — 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: France Most frequent locator attributed to this token: IN99

Receiver-side FT8 activity involving F4DIF, decoded by SO8OO in southeastern Poland. 130 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-10-06.

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 130 FT8 messages attributed to F4DIF as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 40 m (29%). Most decodes (66%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

130
Messages attributed
19
UTC dates decoded
46
Active 15-min windows
-12 dB
Estimated median S/N

Bands

40m · 38 20m · 92
First attributed message: 2026-06-18
Last attributed message: 2026-10-06 07:52 UTC

Observed FT8 message patterns

Attributed sample
130 messages
Active dates
19 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-20 to -6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 37, moderate (-15 to -9 dB) 60, strong (≥ -8 dB) 33.

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 F4DIF 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 F4DIF

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
IN99 · 84 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,633 km (approx.)
Last such locator decoded
2026-10-04 21:33 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 UTCBandF4DIF S/NCounterpartCounterpart S/NMsgsCapture
10-16 07:43 40m - / - 9A4ZM +4 / - 2 Partial capture
10-16 07:09 40m - / -10 II6JOTA -20 / - 2 Partial capture
10-07 07:33 40m - / -4 F4HMP -16 / - 2 ✓ Closing fragment
10-07 07:31 40m - / -11 DL9KM -5 / - 3 ✓ Closing fragment
10-07 06:53 40m - / - HG8LXL -1 / - 4 Partial capture
10-06 09:36 40m - / -16 HA1BF -12 / - 2 ✓ Closing fragment
10-06 08:56 40m - / - HG8LXL -7 / - 4 Partial capture
10-06 07:51 40m -10 / - CO8LY - / -25 3 Partial capture
10-05 15:13 40m - / -8 G0ORH -9 / - 2 ✓ Closing fragment
10-05 13:24 40m - / - HG8LXL -4 / - 4 Partial capture
10-05 13:09 40m - / - HG8LXL 0 / - 4 Partial capture
10-04 21:24 40m -18 / -24 M7CWF -18 / -16 5 ✓ Full exchange observed
10-04 21:23 40m -17 / -12 YO4NF 0 / - 3 ✓ Closing observed
10-04 20:57 40m -10 / -11 EG1FAP -11 / -7 7 ✓ Full exchange observed
10-04 20:34 40m -8 / - EA2AWS - / -15 4 ✓ Closing fragment
10-04 20:28 40m - / +2 IQ9SZ/7 -16 / - 2 Partial capture
10-04 20:17 40m -18 / -11 EB1GUA -22 / -13 3 Partial capture
10-04 20:09 40m -12 / - IK0XBX -4 / - 3 ✓ Closing observed
10-04 20:05 40m - / - EC2ASL -8 / - 2 Partial capture
10-04 20:03 40m -12 / - LZ936BA - / - 2 Partial capture
10-04 20:01 40m -9 / - DL/PA2RO - / - 3 Partial capture
10-04 19:55 40m -8 / -5 MM6EQY -23 / -23 4 Partial capture
10-04 19:51 40m -5 / -8 HB9EFK +8 / -8 5 ✓ Full exchange observed
10-04 19:50 40m -9 / - M0MLS - / -11 3 ✓ Closing fragment
10-02 14:44 40m - / - DG9FBA -9 / - 2 ✓ Closing fragment
10-02 13:03 40m - / - PD1AC -12 / - 2 Partial capture
10-02 07:53 40m - / - RW1CW -22 / - 3 Partial capture
10-02 07:41 40m - / -19 DC1VKR -14 / - 2 ✓ Closing fragment
10-02 07:28 40m - / 0 DD2PI -8 / - 2 ✓ Closing fragment
10-02 07:26 40m - / -6 G0JEI -11 / - 3 ✓ Closing fragment
10-02 07:24 40m - / -6 DH9DR +8 / - 2 ✓ Closing fragment
10-02 06:32 40m - / -13 PE1NPS -9 / - 4 ✓ Closing fragment
10-02 06:30 40m - / +3 ON4KEB -1 / - 3 Partial capture
09-03 10:16 40m - / -3 PE9JAN -11 / - 3 Partial capture
09-02 20:25 40m -13 / - JG3TRB - / - 2 Partial capture
08-31 15:25 20m -5 / - BV2NF - / - 2 Partial capture
08-27 13:57 40m - / - DJ0MAB -22 / - 2 Partial capture
08-24 15:36 20m -3 / - BI4XDT - / - 2 Partial capture
08-24 15:21 20m -12 / -16 JA5SUD -5 / -10 4 ✓ Full exchange observed
08-24 14:46 20m -16 / - F4NGR - / -15 3 Partial capture
08-22 15:49 20m - / -15 7K1CPT -5 / - 2 Partial capture
08-22 13:09 20m -20 / -3 II7MGBT -6 / -20 3 Partial capture
08-20 15:08 40m - / +2 ON8PR -18 / - 2 ✓ Closing fragment
08-20 14:49 40m - / -15 F4EIK -16 / - 2 ✓ Closing fragment
08-17 16:12 20m -17 / - <...> - / - 3 Partial capture
08-17 14:07 20m -16 / - SH4UMN - / - 2 Partial capture
08-17 13:09 20m - / -5 F4HTA +6 / - 2 ✓ Closing fragment
08-17 10:02 20m - / -5 SH5RJX -19 / - 3 Partial capture
08-17 09:52 20m - / -5 F4FSY -12 / - 2 ✓ Closing fragment
08-17 08:22 20m -20 / - YV5JLO - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
093700 -14 1353  F4DIF HA1BF RR73
065300  +0 1421  F4DIF HG8LXL KN06 (x4)
073045 -16 1728  F4DIF F4HMP JN39
073145  -5 1393  F4DIF DL9KM JN68 (x3)
073315 -17 1727  F4DIF F4HMP R-04 (x2)
070930 -19 1815  F4DIF II6JOTA -10 (x2)
074300  +3  504  F4DIF 9A4ZM JN86 (x2)
20m 
UTC    dB Audio  Message
152100  -7 1844  JA5SUD F4DIF IN99
152115  -6 1844  F4DIF JA5SUD -16
152130 -16 1844  JA5SUD F4DIF R-10
152145  -4 1844  F4DIF JA5SUD RR73
153400  -7 2194  BI4XDT F4DIF IN99 (x3)
153845  -3 1677  F4DIF EA3AAY JN11
091030 -15 2012  F4DIF IR7MGGC +03
091915 -23 1876  R1530IG F4DIF IN99
105615 -10  627  <...> F4DIF IN99
085600 -12 1556  YV5JLO F4DIF IN99
074600 -21 1077  HI8WRA F4DIF R-26
152500  -2  431  BV2NF F4DIF IN99 (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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