DM3CS — 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: JO41

Receiver-side FT8 activity involving DM3CS, decoded by SO8OO in southeastern Poland. 202 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-10-07.

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 202 FT8 messages attributed to DM3CS as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (55%), followed by 40 m (43%) and 10 m (2%). Most decodes (74%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

202
Messages attributed
19
UTC dates decoded
42
Active 15-min windows
-10 dB
Estimated median S/N

Bands

40m · 87 20m · 111 10m · 4
First attributed message: 2026-06-10
Last attributed message: 2026-10-07 18:14 UTC

Observed FT8 message patterns

Attributed sample
202 messages
Active dates
19 UTC dates
Estimated median S/N
-10 dB
Estimated 10th-90th percentile
-19 to -3 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 40, moderate (-15 to -9 dB) 81, strong (≥ -8 dB) 81.

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 DM3CS 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 DM3CS

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
JO41 · 134 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
916 km (approx.)
Last such locator decoded
2026-10-07 18:08 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 UTCBandDM3CS S/NCounterpartCounterpart S/NMsgsCapture
10-07 18:10 40m -4 / - M7MFK - / -7 6 Partial capture
10-07 18:04 40m -5 / 0 S53AK +1 / +1 7 Partial capture
08-30 19:32 20m - / -18 TA4DX +9 / - 3 Partial capture
08-30 19:30 20m - / -8 OE6TNO +6 / - 2 ✓ Closing fragment
08-30 19:04 20m - / 0 EA7R +15 / - 2 ✓ Closing fragment
08-30 08:48 20m -16 / -11 OH1LA -13 / -2 5 ✓ Full exchange observed
08-30 08:31 20m - / -20 UA3AIU +2 / - 3 ✓ Closing fragment
08-30 08:19 20m - / -5 R3KF +8 / - 2 ✓ Closing fragment
08-29 21:38 20m - / -9 AA3B +3 / - 3 ✓ Closing fragment
08-29 18:47 20m - / -11 EA2DR -14 / - 2 ✓ Closing fragment
08-27 18:13 20m -10 / - RW3DDZ - / -7 4 ✓ Closing fragment
08-27 18:11 20m -11 / - ZL2NU - / - 3 Partial capture
08-27 16:28 20m -10 / -20 4X1UF -2 / -12 19 Partial capture
08-27 16:26 20m -7 / - AO5FSB - / - 4 Partial capture
08-26 19:50 20m -5 / - KQ4IJI - / - 4 Partial capture
08-26 19:46 20m -3 / - N3LAG - / -13 7 ✓ Closing fragment
08-26 19:44 20m -3 / - AD9GE - / -6 2 ✓ Closing fragment
08-26 19:42 20m -1 / - EB3DBR - / - 3 Partial capture
08-23 20:03 20m -6 / - XU7O - / - 6 Partial capture
08-22 16:18 20m -4 / - UR5LY - / - 3 Partial capture
08-22 10:53 20m -13 / -14 OK1AYM +11 / - 4 ✓ Closing observed
08-22 10:50 20m -13 / - V31DL - / -18 5 Partial capture
08-22 10:49 20m -10 / -6 F1PBZ +11 / +2 5 ✓ Full exchange observed
08-21 19:56 20m -6 / - KO4SPC - / - 2 Partial capture
08-20 17:44 10m -14 / - DL1AAH - / - 4 Partial capture
08-20 15:16 20m -10 / - CT7BDJ - / -12 2 Partial capture
08-16 20:56 20m -16 / - <...> - / -14 2 Partial capture
08-16 20:43 20m - / -9 I1WUA -12 / - 2 ✓ Closing fragment
08-15 14:21 20m - / -17 E70SZ -16 / - 2 ✓ Closing fragment
07-29 21:55 40m - / -1 DL9KM -14 / - 2 ✓ Closing fragment
07-29 21:53 40m -12 / - F1IQH - / -11 2 ✓ Closing fragment
07-29 20:36 20m - / -16 OS9T 0 / - 2 ✓ Closing fragment
07-29 20:06 20m - / -10 CR7BRV +2 / - 2 ✓ Closing fragment
07-28 20:31 40m - / -7 DL70ESSEN -6 / - 5 Partial capture
07-28 20:20 40m - / -2 OZ1KZX -14 / - 2 ✓ Closing fragment
07-28 20:18 40m - / -7 OE8YXK 0 / - 2 ✓ Closing fragment
07-28 20:13 40m - / -1 G4YAN -8 / - 5 ✓ Closing fragment
07-28 20:11 40m -20 / - M0MLS -17 / -10 2 ✓ Closing observed
07-28 20:06 40m - / - PG4T -6 / - 2 ✓ Closing fragment
07-27 20:08 40m - / +7 DK2MAX -8 / - 2 ✓ Closing fragment
07-27 20:03 40m - / -6 MW0USK -8 / - 2 ✓ Closing fragment
07-27 20:01 40m - / -8 F4JRC +6 / - 2 ✓ Closing fragment
07-27 19:42 40m -23 / -6 HA7TM -2 / -9 3 Partial capture
07-27 19:38 40m -24 / - SQ6WA - / - 2 Partial capture
07-27 19:32 40m - / -8 SP9NSQ -13 / - 2 ✓ Closing fragment
07-26 18:54 20m - / -13 OH5KT -16 / - 2 ✓ Closing fragment
07-26 18:31 20m - / -8 LZ5UY -6 / - 2 ✓ Closing fragment
07-25 20:28 40m - / -4 SP2XUK -6 / - 5 Partial capture
07-25 20:21 40m -24 / -15 LA7KJ -16 / - 2 Partial capture
07-25 20:19 40m -23 / - PF1B -10 / -6 2 ✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m 
UTC    dB Audio  Message
180430  +5 1194  DM3CS S53AK R+00
180445  -5  864  S53AK DM3CS +01
180500  -1 1194  DM3CS S53AK R-08 (x2)
180615  -5  864  S53AK DM3CS RRR (x2)
180715  -8  864  CQ DM3CS JO41 (x3)
181045  -3  864  M7MFK DM3CS -07 (x6)
20m 
UTC    dB Audio  Message
084845 -16 1892  OH1LA DM3CS -02
084900 -10 1893  DM3CS OH1LA R-11 (x3)
190430 +14 2921  DM3CS EA7R +00 (x2)
190645 -13 2428  VO1IV DM3CS JO41
190715 -16 2428  RA3FD DM3CS JO41
191515 -14 2428  CQ DM3CS JO41
193030  +3 2429  DM3CS OE6TNO R-08 (x2)
193200  +8  826  DM3CS TA4DX -18 (x3)
162615 -12 2728  DM3CS OH3OJ -12
10m 
UTC    dB Audio  Message
190130 -24 1468  DM3CS 9A2KS R-15
192500 -21 2066  DM3CS M0BEW -05
173730 -24 1966  DM3CS YO6PQE R-18
174415 -16 1966  DL1AAH DM3CS JO41 (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.

CW

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

Explore CW reception at SO8OO

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