DA3W — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JO52

Receiver-side FT8 activity involving DA3W, decoded by SO8OO in southeastern Poland. 205 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-08-23 and 2026-10-23.

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 205 FT8 messages attributed to DA3W 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 (61%), followed by 80 m (36%) and 20 m (3%). Most decodes (86%) 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 -16 dB.

Overview

205
Messages attributed
9
UTC dates decoded
38
Active 15-min windows
-16 dB
Estimated median S/N

Bands

First attributed message: 2026-08-23
Last attributed message: 2026-10-23 16:24 UTC

Observed FT8 message patterns

Attributed sample
205 messages
Active dates
9 UTC dates
Estimated median S/N
-16 dB
Estimated 10th-90th percentile
-23 to +2 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 111, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 78.

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.

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 DA3W

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
JO52 · 87 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
803 km (approx.)
Last such locator decoded
2026-10-23 16:20 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 UTCBandDA3W S/NCounterpartCounterpart S/NMsgsCapture
10-23 16:21 40m -20 / -15 R3DHP -5 / - 4 ✓ Closing observed
10-23 16:21 40m -16 / -20 RT3K -10 / -19 4 Partial capture
10-23 16:18 40m -15 / -13 SQ4INW -8 / -3 4 ✓ Full exchange observed
10-23 16:16 40m -20 / - G0HSP -11 / +2 3 Partial capture
10-23 16:11 40m -19 / - DJ3KS -5 / +9 5 ✓ Full exchange observed
10-23 15:58 40m - / -14 R7LC 0 / - 2 Partial capture
10-23 15:53 40m - / -10 DD7EE -8 / - 3 ✓ Closing fragment
10-23 15:50 40m - / -16 SV1DKR -12 / - 5 ✓ Closing fragment
10-23 15:48 40m - / - ON2ACO -8 / - 2 ✓ Closing fragment
10-23 15:48 40m - / +5 DK0KG -5 / - 6 ✓ Closing fragment
10-23 13:27 40m -24 / - DK5FN - / -7 2 ✓ Closing fragment
10-23 13:21 40m -19 / -17 SV8DCY -6 / - 4 ✓ Closing observed
10-23 13:14 40m - / -13 S56LKP -6 / - 2 ✓ Closing fragment
10-22 16:52 80m - / - SM7WVZ -3 / - 5 Partial capture
10-22 16:50 80m -4 / - DC0GL -5 / -1 5 ✓ Full exchange observed
10-22 16:46 80m +2 / - DO2ZZ -5 / -6 3 ✓ Closing observed
10-22 16:43 80m -3 / +10 DH5MK +11 / - 5 ✓ Full exchange observed
10-22 16:40 80m +1 / -11 RA3QQI -3 / -11 11 Partial capture
10-22 16:38 80m +4 / +2 US7KC +9 / +10 7 ✓ Full exchange observed
10-22 16:36 80m +5 / - SM6VAG - / -7 3 ✓ Closing fragment
10-22 16:33 80m +4 / +5 DO6LE -3 / +10 4 ✓ Full exchange observed
10-22 16:33 80m -1 / -15 RA5AD -2 / -9 8 ✓ Full exchange observed
10-22 16:30 80m -1 / +5 DO7MRC -8 / -4 5 ✓ Full exchange observed
10-22 16:29 80m 0 / - DM5CS -15 / -7 5 ✓ Full exchange observed
10-22 16:26 80m -5 / +6 DO9PV -8 / +6 5 ✓ Full exchange observed
10-22 16:24 80m +1 / - DO8JB - / - 3 Partial capture
10-21 13:08 40m - / -3 OM2IB +2 / - 2 ✓ Closing fragment
10-21 12:51 40m - / -5 YL3ASK -20 / - 2 ✓ Closing fragment
10-21 12:47 40m -22 / - DH5IS - / -16 4 Partial capture
10-21 12:24 40m - / - HB9CEX +1 / - 4 Partial capture
10-21 12:22 40m -22 / - IU5VMC - / - 2 Partial capture
10-21 12:18 40m -20 / - HB9HKJ - / -9 2 Partial capture
10-21 12:15 40m -20 / - G1SID - / - 2 ✓ Closing fragment
10-21 12:01 40m -21 / -2 OK2CNI -6 / - 5 ✓ Closing observed
10-21 10:58 40m -23 / +8 F4HMP -17 / - 3 ✓ Closing observed
10-21 10:22 40m - / -13 IV3XPP -18 / - 2 ✓ Closing fragment
10-21 09:15 40m - / 0 DL2YBG -20 / - 2 Partial capture
10-12 10:01 40m -21 / - DG1DPN - / -18 2 Partial capture
10-12 09:53 40m - / - UA2FFD -22 / - 4 ✓ Closing fragment
10-12 09:53 40m -22 / - DL5SUA - / -4 2 Partial capture
10-12 09:52 40m -22 / - PA7ZZ - / 0 2 ✓ Closing fragment
10-12 09:33 40m - / +2 DM6JKC -6 / - 2 ✓ Closing fragment
10-12 09:09 40m -23 / +1 HG0NPJ +2 / -7 3 ✓ Full exchange observed
10-12 09:05 40m -17 / - DG1DPN - / -18 2 Partial capture
10-12 09:02 40m -20 / +4 OT4R -23 / -3 3 ✓ Full exchange observed
10-12 06:46 40m - / -5 HA1BF 0 / - 2 ✓ Closing fragment
10-09 18:14 40m -19 / -14 RC5F -24 / - 2 ✓ Closing observed
10-09 17:59 80m -5 / -7 DO1OAS -3 / -11 3 ✓ Full exchange observed
10-09 17:55 80m -7 / +1 DO6THI -8 / -16 4 Partial capture
10-09 17:50 80m -6 / -3 DO1TLP 0 / -10 8 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
161645 -18 1782  G0HSP DA3W +02 (x2)
161830  -5 2610  DA3W SQ4INW JO93
161845 -15 1339  SQ4INW DA3W -03
161900  -9 1680  DA3W SQ4INW R-13 (x2)
162045 -20 1920  CQ DA3W JO52
162130 -12 2650  DA3W RT3K -20
162130  -6 1921  DA3W R3DHP KO95
162200  -9 2650  DA3W RT3K -20
162230  -6 1922  DA3W R3DHP R-15
162245 -20 1920  R3DHP DA3W RR73
162300  -3 1922  DA3W R3DHP 73
162315 -16 1920  RT3K DA3W R-19 (x2)
80m
UTC    dB Audio  Message
164430 +11 2620  DA3W DH5MK RR73
164445  +1 1559  DH5MK DA3W 73
164600  +2 1559  DO2ZZ DA3W R-06
164615  -5 2496  DA3W DO2ZZ RR73
164630  +2 1559  DO2ZZ DA3W 73
165015  -3 1559  DC0GL DA3W JO52
165100  -1 2297  DA3W DC0GL +11
165115  -5 1844  DC0GL DA3W R-01
165130  -9 2297  DA3W DC0GL RR73
165145  -4 1844  DC0GL DA3W 73
165200  -1  355  DA3W SM7WVZ JO65 (x5)
20m
UTC    dB Audio  Message
115130  +5 2481  DA3W IQ4JO JN63
115130  -8  587  DA3W EC3A -10
115200 -15 1697  DA3W PD2WL -13
115200  +4 2481  DA3W IQ4JO R-10
115230 -15 1697  DA3W PD2WL -13
115230  +5 2481  DA3W IQ4JO 73
115230  -5  587  DA3W EC3A -11
115300 -14 1697  DA3W PD2WL -13
115300  +0  587  DA3W EC3A -11
115330 -15 1697  DA3W PD2WL -13 (x6)

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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee