DL1SIS — 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: JN39

Receiver-side FT8 activity involving DL1SIS, decoded by SO8OO in southeastern Poland. 69 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-11-01.

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 69 FT8 messages attributed to DL1SIS as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (86%), followed by 10 m (12%) and 40 m (3%). Several six-hour UTC windows tied for the largest share (78%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -17 dB.

Overview

69
Messages attributed
6
UTC dates decoded
18
Active 15-min windows
-17 dB
Estimated median S/N

Bands

40m · 2 20m · 59 10m · 8
First attributed message: 2026-06-14
Last attributed message: 2026-11-01 13:33 UTC

Observed FT8 message patterns

Attributed sample
69 messages
Active dates
6 UTC dates
Estimated median S/N
-17 dB
Estimated 10th-90th percentile
-22 to -11 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 2.

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 DL1SIS in decoded directed-looking exchanges:

Most frequent locator attributed to DL1SIS

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
JN39 · 31 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,063 km (approx.)
Last such locator decoded
2026-11-01 13:33 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 UTCBandDL1SIS S/NCounterpartCounterpart S/NMsgsCapture
11-06 14:55 40m - / -13 F4IVZ -6 / - 3 ✓ Closing fragment
11-06 14:45 40m - / -1 DG6ITP -6 / - 3 Partial capture
11-06 14:35 40m - / - M8FQT -18 / - 2 Partial capture
11-06 10:57 40m - / +10 LX9RL -16 / - 2 ✓ Closing fragment
11-06 10:40 40m - / - ON3RUM -16 / - 2 ✓ Closing fragment
11-06 10:37 40m - / - DL7DL -12 / - 3 ✓ Closing fragment
11-06 10:28 40m - / -8 DL8SEE -17 / - 3 ✓ Closing fragment
11-06 10:21 40m - / -13 OE6TNO -9 / - 11 Partial capture
11-06 10:11 40m - / -4 OT1A -7 / - 3 ✓ Closing fragment
11-06 10:09 40m - / - 9A3EYA -6 / - 4 Partial capture
11-06 10:02 40m - / -15 SP9UPH +4 / - 2 Partial capture
11-06 10:00 40m - / -14 IK2XDF -11 / - 3 ✓ Closing fragment
11-06 09:55 40m - / -11 DL6FCK -13 / - 3 Partial capture
11-06 09:52 40m - / - DG6ITP -9 / - 5 Partial capture
11-06 09:46 40m - / +1 DH9DR -6 / - 2 ✓ Closing fragment
11-06 09:24 40m - / -15 HB9ELE +1 / - 3 ✓ Closing fragment
11-06 09:16 40m - / -9 DA1ST -11 / - 5 ✓ Closing fragment
11-06 09:14 40m - / -10 DD1OO -10 / - 2 ✓ Closing fragment
11-06 09:14 40m - / - IK4LZH -8 / - 2 Partial capture
11-04 18:10 40m - / -18 HA7TM +2 / - 2 Partial capture
11-04 17:59 40m - / -14 HA1BF -6 / - 2 ✓ Closing fragment
11-04 17:51 40m - / -16 F6BHK -12 / - 2 Partial capture
11-04 17:48 40m - / -12 G3VCQ -2 / - 4 ✓ Closing fragment
11-01 14:00 40m - / -10 S52UF -5 / - 2 ✓ Closing fragment
11-01 12:18 40m - / -8 DL0HAM -3 / - 4 ✓ Closing fragment
11-01 12:17 40m - / -3 DH1NGL -2 / - 2 ✓ Closing fragment
11-01 12:12 40m - / -4 DL0HAM -4 / - 2 ✓ Closing fragment
11-01 11:54 40m - / -20 DL5DQZ +6 / - 3 ✓ Closing fragment
11-01 11:48 40m - / -10 DD3ZZ -14 / - 2 Partial capture
11-01 11:47 40m - / -8 DB0IPA -6 / - 2 ✓ Closing fragment
11-01 11:44 40m - / -8 DM5ME -7 / - 3 ✓ Closing fragment
11-01 11:37 40m - / -9 DB2HA +4 / - 5 ✓ Closing fragment
11-01 11:32 40m - / -6 OK1DXR +4 / - 5 ✓ Closing fragment
11-01 11:25 40m - / -21 PE1NPS -14 / - 4 Partial capture
11-01 11:19 40m - / 0 DL3EBJ -16 / - 2 ✓ Closing fragment
11-01 11:00 40m - / - DM5ME -16 / - 2 Partial capture
11-01 11:00 40m - / -13 IX1HPN -1 / - 3 ✓ Closing fragment
11-01 10:55 40m - / -21 9A6T -4 / - 3 Partial capture
11-01 10:27 40m - / -18 M0WBK -23 / - 2 Partial capture
11-01 10:10 40m - / -21 9A6T -11 / - 2 Partial capture
11-01 10:10 40m - / - F4BYA -2 / - 2 Partial capture
11-01 10:07 40m - / - DL7ARV -4 / - 4 Partial capture
11-01 09:42 40m - / -16 OZ9FF -13 / - 10 Partial capture
11-01 09:29 40m - / -25 DF1BN -5 / - 7 ✓ Closing fragment
10-27 17:40 40m - / -13 DK1HSI -8 / - 3 ✓ Closing fragment
10-27 17:15 40m - / -6 M8GSY -3 / - 4 Partial capture
10-26 17:16 40m - / -10 ES6DO -1 / - 2 ✓ Closing fragment
10-26 16:38 40m - / -21 9A4ZM -12 / - 3 ✓ Closing fragment
10-26 16:33 40m - / -13 9A1CCB +11 / - 3 ✓ Closing fragment
10-25 19:35 40m - / - M0CKX -15 / - 3 Partial capture

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
103745 -12  835  DL1SIS DL7DL JO62 (x2)
104045 -17 2370  DL1SIS ON3RUM JO10 (x2)
105715 -15 1802  DL1SIS LX9RL +10 (x2)
143545 -19 1151  DL1SIS M8FQT IO93 (x2)
144515  -7 1150  DL1SIS DG6ITP JO71 (x3)
145345 -16 1362  DL1SIS PD4RJ -16
145545  -9  507  DL1SIS F4IVZ JN33 (x3)
80m 
UTC    dB Audio  Message
190930  +5 1156  DL1SIS DL1JEL JO60
191000  +3 2732  DL1SIS F5HNQ R-13
191000  +9 1156  DL1SIS DL1JEL JO60 (x6)
191930  +2  984  DL1SIS DO1NJN JO30 (x3)
192200  +0 2731  DL1SIS F5HNQ IN98 (x4)

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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