SV4DCQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Greece Most frequent locator attributed to this token: KM19

Receiver-side FT8 activity involving SV4DCQ, decoded by SO8OO in southeastern Poland. 165 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-22.

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 165 FT8 messages attributed to SV4DCQ as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (84%), followed by 20 m (11%) and 40 m (5%). Most decodes (65%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

165
Messages attributed
8
UTC dates decoded
24
Active 15-min windows
-14 dB
Estimated median S/N

Bands

40m · 9 20m · 18 10m · 138
First attributed message: 2026-06-07
Last attributed message: 2026-08-22 09:33 UTC

Observed FT8 message patterns

Attributed sample
165 messages
Active dates
8 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-22 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 72, moderate (-15 to -9 dB) 36, strong (≥ -8 dB) 57.

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 SV4DCQ 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 SV4DCQ

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
KM19 · 101 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,164 km (approx.)
Last such locator decoded
2026-08-22 09:00 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 UTCBandSV4DCQ S/NCounterpartCounterpart S/NMsgsCapture
08-22 09:29 10m - / - DL2SEW -8 / - 2 Partial capture
08-22 09:23 10m - / - DH1TZ -16 / - 7 Partial capture
08-22 09:22 10m - / -8 PE9JAN -11 / - 3 ✓ Closing fragment
08-22 09:00 10m -18 / -19 ON5RZ -14 / - 4 ✓ Closing observed
08-22 08:57 10m -18 / - SO1CJ - / -9 2 ✓ Closing fragment
08-21 20:39 20m - / -15 RW3DDZ -13 / - 4 Partial capture
08-21 20:35 40m - / -20 9A3AUH +6 / - 3 Partial capture
08-21 20:34 40m - / -24 9A1CCB -1 / - 3 ✓ Closing fragment
08-21 20:34 40m - / - IK4LZH -2 / - 4 Partial capture
08-21 20:33 40m - / - PE1NPS -1 / - 4 Partial capture
08-21 17:10 20m - / - DK1GP +6 / - 3 Partial capture
08-21 16:41 20m - / -14 ON1JP -11 / - 4 Partial capture
08-21 16:40 20m - / - DL1UDO -8 / - 3 Partial capture
08-21 07:28 20m - / - IK4LZH -3 / - 4 Partial capture
08-21 07:25 20m - / - E70SZ -1 / - 4 Partial capture
08-21 07:25 20m - / - DL1R +4 / - 2 Partial capture
08-21 07:25 20m - / - IK4LZH 0 / - 2 Partial capture
08-21 07:24 20m - / -12 YO6LM +6 / - 4 Partial capture
08-21 07:21 20m - / - DB2HA +7 / - 2 ✓ Closing fragment
08-21 07:21 20m - / -19 YO6LM -2 / - 2 Partial capture
08-15 17:33 20m - / - EA3AAY -15 / - 2 Partial capture
08-09 19:23 40m - / - YO9FDG -17 / - 2 Partial capture
08-09 19:18 40m - / -8 DL5MKR -12 / - 7 Partial capture
08-09 18:54 40m - / -11 DG9MHZ -17 / - 2 Partial capture
08-09 18:45 40m - / -4 IN3IZQ -18 / - 2 Partial capture
08-09 18:43 40m - / +9 YO9ADN -22 / - 2 ✓ Closing fragment
08-09 18:34 40m - / - UT3UQJ -8 / - 2 Partial capture
08-09 18:24 40m - / - UT3UQJ -4 / - 2 Partial capture
08-09 18:13 40m - / -18 R3ZBY -15 / - 2 Partial capture
08-09 18:09 40m - / - YO7ARY -23 / - 2 Partial capture
08-09 18:03 40m - / -20 SP7TF -18 / - 2 ✓ Closing fragment
08-09 18:00 40m - / -2 E70SZ -19 / - 2 Partial capture
08-01 12:31 10m -7 / - <...> - / -22 8 Partial capture
08-01 12:26 10m -8 / - SP7KGO - / -13 2 ✓ Closing fragment
08-01 12:19 10m -18 / - OK1GSB - / -19 6 ✓ Closing fragment
08-01 12:14 10m -20 / - 9A3CX - / -18 5 ✓ Closing fragment
08-01 12:06 10m -20 / - SQ7FBP - / -18 5 ✓ Closing fragment
07-05 09:17 20m - / -4 E74K -12 / - 2 ✓ Closing fragment
07-05 08:32 10m - / - DF8MV +1 / - 5 Partial capture
07-05 08:32 10m - / - DO1ID -10 / - 4 Partial capture
07-05 08:27 10m - / - DO1FDK -3 / - 6 Partial capture
07-05 08:26 10m -12 / +8 DL5AWR -12 / -15 8 ✓ Full exchange observed
07-05 08:26 10m - / - DN9SGE -14 / - 8 Partial capture
07-05 08:24 10m - / 0 DL9KM +2 / - 5 Partial capture
07-05 08:19 10m -13 / +10 DA6MY 0 / -8 3 Partial capture
07-05 08:19 10m - / - DO1ID -5 / - 5 Partial capture
07-05 08:19 10m - / -5 DO9PV -12 / - 6 ✓ Closing fragment
07-05 08:18 10m - / -8 DL4BHA -17 / - 7 Partial capture
07-05 08:16 10m - / - DO1FDK -1 / - 11 Partial capture
07-05 08:13 10m - / - ON3RT -19 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

10m 
UTC    dB Audio  Message
092315 -10 1738  SV4DCQ PE9JAN 73
092345 -18 1050  SV4DCQ DH1TZ JO40 (x2)
092445 -19 1320  SV4DCQ DO5PY JN49
092445 -17 1049  SV4DCQ DH1TZ JO40 (x3)
092615  -5 2612  SV4DCQ DM2FK JO51
092615 -13 1050  SV4DCQ DH1TZ JO40 (x2)
092915  -9 2739  SV4DCQ DL2SEW JN48 (x2)
093315 -11  660  SV4DCQ DN9DKN JO31
093330 -21 2131  DN9DA SV4DCQ -13
102130 -23 1920  SV4DCQ DO2MS JO40
20m 
UTC    dB Audio  Message
164245 -12  276  SV4DCQ ON1JP -14
164315  -4 2090  SV4DCQ PA1PXL JO21
164315 -10  276  SV4DCQ ON1JP -14
165015 -12 2089  SV4DCQ DL1HEW JO53
171015  +5 2779  SV4DCQ DK1GP JO30 (x3)
171215 -17 1926  SV4DCQ DK5UP JO31
202715 -24 2120  SV4DCQ SA0WAE JO99
202915 -22 1809  SV4DCQ F8KIC/P JN29
203915 -11 1954  SV4DCQ RW3DDZ R-15 (x4)
204145  -7 1816  SV4DCQ NF3R FN20
40m 
UTC    dB Audio  Message
192445 -17 1084  SV4DCQ YO9FDG KN24
203315  -1 2535  SV4DCQ PE1NPS JO22 (x3)
203415  +2  437  SV4DCQ IK4LZH JN54
203445  -4 2535  SV4DCQ PE1NPS JO22
203445  -2  438  SV4DCQ IK4LZH JN54
203445  -1 1346  SV4DCQ 9A1CCB JN85
203515  -4  438  SV4DCQ IK4LZH JN54
203515  +4 2948  SV4DCQ 9A3AUH JN75
203515  -6 1347  SV4DCQ 9A1CCB R-24
203545  -5  438  SV4DCQ IK4LZH JN54
203545 +10 2948  SV4DCQ 9A3AUH R-20
203545  +3 1347  SV4DCQ 9A1CCB 73
203615  +4 2947  SV4DCQ 9A3AUH R-20

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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