F5SG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN37

Receiver-side FT8 activity involving F5SG, decoded by SO8OO in southeastern Poland. 230 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-08-25.

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 230 FT8 messages attributed to F5SG as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (42%), followed by 10 m (27%) and 20 m (18%). Most decodes (73%) fell within the six-hour window 03:00-09:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

230
Messages attributed
9
UTC dates decoded
22
Active 15-min windows
-7 dB
Estimated median S/N

Bands

80m · 6 60m · 24 40m · 97 20m · 42 10m · 61
First attributed message: 2026-06-12
Last attributed message: 2026-08-25 06:03 UTC

Observed FT8 message patterns

Attributed sample
230 messages
Active dates
9 UTC dates
Estimated median S/N
-7 dB
Estimated 10th-90th percentile
-14 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 82, strong (≥ -8 dB) 134.

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 F5SG 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 F5SG

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
JN37 · 57 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,116 km (approx.)
Last such locator decoded
2026-08-25 06:02 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 UTCBandF5SG S/NCounterpartCounterpart S/NMsgsCapture
08-25 06:02 20m -12 / - N2LEE - / -6 3 ✓ Closing fragment
08-25 06:00 20m -7 / - KC4WQ - / -17 3 Partial capture
08-25 05:54 20m -11 / - AC5UV - / -2 4 Partial capture
08-20 08:28 20m -4 / -15 DJ0MAB -13 / 0 5 ✓ Full exchange observed
08-20 08:27 20m -15 / - DB1BAC/P -15 / -6 4 ✓ Full exchange observed
08-20 03:18 40m -9 / - HI3JMS - / -8 5 Partial capture
08-20 03:17 40m -10 / - TN8GD - / +3 2 Partial capture
08-20 03:12 40m - / -15 F1IQH -11 / - 3 Partial capture
07-26 07:27 20m - / -11 PD3LKN -4 / - 3 ✓ Closing fragment
07-26 07:21 20m -12 / - F4LNM -10 / +3 3 ✓ Closing observed
07-23 06:24 20m -17 / - LZ1ON - / -10 2 ✓ Closing fragment
07-23 06:22 20m -14 / +4 F4HSB -20 / -9 3 Partial capture
07-23 06:17 20m -16 / - W4PSK - / 0 4 Partial capture
07-22 10:20 10m -6 / - SQ4FXT - / +3 2 ✓ Closing fragment
07-22 10:16 10m -2 / -19 LX1NO -1 / -18 8 ✓ Full exchange observed
07-22 10:15 10m -2 / - SP3JHY - / -8 2 ✓ Closing fragment
07-22 10:12 10m -3 / - SP6CJE - / -10 2 ✓ Closing fragment
07-22 10:10 10m -2 / - PD1WS - / - 2 ✓ Closing fragment
07-22 10:08 10m -6 / - SP9NSQ - / -3 2 ✓ Closing fragment
07-22 10:05 10m -2 / - G0FGI - / -8 3 ✓ Closing fragment
07-22 10:00 10m -2 / - OE5WRO - / +6 8 ✓ Closing fragment
07-22 09:59 10m -4 / - EA4FKJ - / -5 2 ✓ Closing fragment
07-22 09:57 10m -5 / - RK3AW - / -2 2 ✓ Closing fragment
07-22 09:56 10m 0 / - IZ8PPI - / +6 2 ✓ Closing fragment
07-22 09:53 10m -4 / - D2UY - / -8 3 ✓ Closing fragment
07-22 09:51 10m -6 / - EX8ABR - / -11 3 ✓ Closing fragment
07-22 09:49 10m -8 / - SP8MO - / - 2 Partial capture

Recent FT8 messages decoded at SO8OO

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

20m 
UTC    dB Audio  Message
082915  -3 2374  DJ0MAB F5SG RR73
082930 -17 2375  F5SG DJ0MAB 73
055400 -14 1952  <...> F5SG -07
055430 -11 1952  AC5UV F5SG -02 (x4)
055800  -4 1739  <...> F5SG -05
060030  -3 1739  KC4WQ F5SG -17 (x3)
060200 -14 1739  CQ F5SG JN37
060230  -8 1739  N2LEE F5SG -06 (x3)
40m 
UTC    dB Audio  Message
031045  -9  808  TJ1GD F5SG RR73
031115 -10  808  CQ F5SG JN37
031145  -6  808  HJ4RUS F5SG -23
031200 -11  808  F5SG F1IQH JN27 (x3)
031345 -11  808  CQ F5SG JN37
031615 -11  808  LU6HOG F5SG -20
031745  -9  808  TN8GD F5SG +03 (x2)
031845 -10  808  HI3JMS F5SG -08 (x5)
10m 
UTC    dB Audio  Message
101700  -2 1660  F5SG LX1NO R-19
101715  -3 1248  LX1NO F5SG RR73
101730  -4 1660  F5SG LX1NO R-19
101745  +2 1248  LX1NO F5SG RR73
101800  -3 1660  F5SG LX1NO 73
101815  -4 1248  CQ F5SG JN37 (x4)
102045  -5 1248  SQ4FXT F5SG R+03 (x2)
102145  -7 1247  CQ F5SG JN37 (x4)

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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