F4FDR — 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: JN04

Receiver-side FT8 activity involving F4FDR, decoded by SO8OO in southeastern Poland. 178 FT8 messages attributed to this token as transmitter, on 60m, 40m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-20.

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 178 FT8 messages attributed to F4FDR as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (36%), followed by 40 m (33%) and 10 m (31%). Several six-hour UTC windows tied for the largest share (69%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

178
Messages attributed
6
UTC dates decoded
19
Active 15-min windows
-12 dB
Estimated median S/N

Bands

60m · 64 40m · 58 10m · 56
First attributed message: 2026-06-11
Last attributed message: 2026-10-20 06:37 UTC

Observed FT8 message patterns

Attributed sample
178 messages
Active dates
6 UTC dates
Estimated median S/N
-12 dB
Estimated 10th-90th percentile
-16 to -4 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 100, strong (≥ -8 dB) 47.

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 F4FDR 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 F4FDR

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
JN04 · 90 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,676 km (approx.)
Last such locator decoded
2026-10-20 06:36 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 UTCBandF4FDR S/NCounterpartCounterpart S/NMsgsCapture
10-20 06:37 60m -15 / +7 DL1UDO -6 / -1 5 ✓ Full exchange observed
10-20 06:34 60m -16 / - EC3A - / -6 2 ✓ Closing fragment
10-20 06:34 60m -15 / -1 DL9KM -14 / - 6 ✓ Closing observed
10-20 06:33 60m -14 / -6 DG6TOM -4 / -10 4 ✓ Full exchange observed
10-20 06:30 60m -16 / - K0RC - / -9 2 ✓ Closing fragment
10-20 06:29 60m -15 / -6 PA0EBG -17 / -7 4 ✓ Full exchange observed
10-20 06:28 60m - / -8 DM2GM -8 / - 3 ✓ Closing fragment
10-20 06:25 60m - / - DH5NC -14 / - 3 Partial capture
10-20 06:23 60m -16 / - G7IGN - / -4 2 ✓ Closing fragment
10-20 06:21 60m -15 / -7 HA5UK +9 / -5 4 ✓ Full exchange observed
10-20 06:17 60m - / - SQ9SZ -11 / - 2 Partial capture
10-20 06:17 60m -15 / - OH1LA -23 / -16 4 ✓ Closing observed
10-20 06:16 60m - / - SP9PRR -8 / - 2 Partial capture
10-20 06:15 60m -17 / -10 DJ7JB -10 / -15 8 ✓ Full exchange observed
10-20 06:15 60m -14 / - IZ8EYN - / -11 2 ✓ Closing fragment
10-20 05:47 40m -8 / - YY5EHT - / -21 2 Partial capture
10-20 05:44 40m -12 / - SQ8V - / -10 2 Partial capture
10-20 05:39 40m -6 / -20 F4NGK -13 / - 4 ✓ Closing observed
10-20 05:02 40m -7 / -2 IU8RFW -4 / -4 3 Partial capture
10-20 05:02 40m -5 / -19 RZ4FWA -18 / -15 7 ✓ Full exchange observed
10-20 04:56 40m -13 / - F4HSB -13 / -8 2 Partial capture
10-16 06:09 60m -14 / - M0KDZ - / -24 2 ✓ Closing fragment
10-16 06:08 60m - / - OH1LA -23 / - 3 Partial capture
10-16 06:07 60m -16 / - IK1WGX -10 / -3 3 ✓ Closing observed
10-16 06:01 60m -13 / - DL1CBH -24 / -6 3 ✓ Closing observed
10-16 05:59 60m -12 / - DF9JL -21 / -12 3 ✓ Closing observed
10-16 05:56 60m -15 / 0 DL3FBI -17 / -16 5 ✓ Full exchange observed
09-17 06:21 40m - / - YT2FA -17 / - 3 Partial capture
09-17 06:18 40m -12 / -2 ON1DGN -16 / - 3 ✓ Closing observed
09-17 06:18 40m - / +4 IW0FGX -8 / - 4 Partial capture
09-17 06:15 40m -10 / - F5SAV - / -19 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m 
UTC    dB Audio  Message
063415 -15 1103  CQ F4FDR JN04
063430 -10 1577  F4FDR DL9KM JN68
063445 -15 1103  EC3A F4FDR -06
063500 -14 1577  F4FDR DL9KM JN68
063515 -16 1103  EC3A F4FDR RR73
063530 -19 1577  F4FDR DL9KM JN68 (x2)
063615 -15 1103  DL9KM F4FDR RR73
063630 -17 1577  F4FDR DL9KM 73
063645 -16 1104  CQ F4FDR JN04
063700  -9 1329  F4FDR DL1UDO JO31
063715 -14 1104  DL1UDO F4FDR -01
063730  -5 1329  F4FDR DL1UDO R+07
063745 -16 1103  DL1UDO F4FDR RR73
063800  -5 1329  F4FDR DL1UDO 73
40m 
UTC    dB Audio  Message
050415 -20 1772  F4FDR RZ4FWA 73
050430  -8 1286  KD7PCE F4FDR -18
053400  -9 1728  CQ F4FDR JN04                         a1 (x3)
053945 -14 1423  F4FDR F4NGK IN95
053945 -10 1726  F4FDR DG5PW JO30
054015 -14 1423  F4FDR F4NGK R-20
054030  -6 1725  F4NGK F4FDR RR73
054045 -10 1423  F4FDR F4NGK 73
054100 -11 1726  KD4YLQ F4FDR -12
054445 -14 1726  SQ8V F4FDR -10 (x2)
054730  -8 1726  YY5EHT F4FDR -21 (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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