DM8MH — 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: JO51

Receiver-side FT8 activity involving DM8MH, decoded by SO8OO in southeastern Poland. 2,130 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 85 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-22.

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 2,130 FT8 messages attributed to DM8MH as the transmitting token by decoded message structure across 85 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (80%), followed by 20 m (15%) and 80 m (5%). The busiest six-hour window was 13:00-19:00 UTC, containing 47% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

2,130
Messages attributed
85
UTC dates decoded
297
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-10-22 18:04 UTC

Observed FT8 message patterns

Attributed sample
2,130 messages
Active dates
85 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-14 to -1 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 77, moderate (-15 to -9 dB) 902, strong (≥ -8 dB) 1,151.

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 DM8MH

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
JO51 · 1,401 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
779 km (approx.)
Last such locator decoded
2026-10-22 18:04 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 UTCBandDM8MH S/NCounterpartCounterpart S/NMsgsCapture
10-22 18:03 80m -4 / - DO5SMH - / - 2 Partial capture
10-22 17:50 80m -4 / -12 SQ6JFJ -6 / - 4 ✓ Closing observed
10-22 17:47 80m -6 / - R2EA/P - / -18 3 ✓ Closing fragment
10-22 17:38 80m - / - UR5XPC -4 / - 2 Partial capture
10-22 17:24 80m -10 / - RK6OQ -5 / -16 4 Partial capture
10-22 17:19 80m - / -7 OK8DCC +5 / - 4 ✓ Closing fragment
10-22 17:12 40m - / -14 RN6MA -2 / - 2 ✓ Closing fragment
10-21 17:04 40m -12 / - EU4BE - / 0 2 Partial capture
10-21 17:01 40m -18 / -10 M1DBB -10 / -11 6 ✓ Full exchange observed
10-20 17:57 40m -6 / - OV5SP - / -9 3 ✓ Closing fragment
10-20 17:54 40m -10 / - OV5SP -18 / -4 3 Partial capture
10-20 17:48 40m -13 / - G8XDD/P - / -7 2 Partial capture
10-20 17:47 40m -14 / -11 PD1LVK -18 / -18 3 ✓ Full exchange observed
10-20 17:12 40m -11 / -12 M9XPN -4 / -9 9 ✓ Full exchange observed
10-20 17:06 40m -11 / - IU5VLR -9 / -12 2 Partial capture
10-20 15:23 40m -8 / - SN0EG - / - 5 Partial capture
10-17 17:30 40m -5 / -15 G0RWF -4 / -7 7 ✓ Full exchange observed
10-17 17:24 40m -2 / -16 CT1BFP -13 / -25 8 ✓ Full exchange observed
10-16 11:08 40m -13 / - SQ7TX - / - 5 Partial capture
10-16 11:00 40m -10 / - II6JOTA - / - 2 Partial capture
10-16 10:42 40m -12 / -12 F1PBZ -9 / -2 4 Partial capture
10-16 10:42 40m - / 0 HF5W -6 / - 2 ✓ Closing fragment
10-16 10:35 40m - / 0 HB9ELE -7 / - 4 ✓ Closing fragment
10-16 10:33 40m -10 / -6 OK1ACE -12 / -5 6 ✓ Full exchange observed
10-14 15:02 40m -7 / +2 DK4ET -16 / -4 8 ✓ Full exchange observed
10-13 15:40 40m - / -6 OH1CIN -13 / - 2 ✓ Closing fragment
10-13 15:37 40m - / 0 IN3JRZ +4 / - 2 ✓ Closing fragment
10-12 16:14 40m -14 / - DM3FAM - / - 3 ✓ Closing fragment
10-12 16:05 40m -16 / - DL4SKY - / - 2 Partial capture
10-12 16:04 40m -12 / -18 SA3LEN -2 / -6 5 ✓ Full exchange observed
10-12 16:00 40m -17 / - MW9XET - / -7 3 ✓ Closing fragment
10-12 15:57 40m -17 / - DC9GT - / - 2 ✓ Closing fragment
10-12 14:48 40m -4 / - DG6FX - / - 2 Partial capture
10-12 14:43 40m -10 / - DL3DQL/P - / +2 2 Partial capture
10-10 17:13 80m -16 / -13 EU1AFX +4 / - 5 ✓ Closing observed
10-10 17:07 80m -6 / -13 DO1TRH -13 / -15 3 ✓ Full exchange observed
10-10 16:57 80m - / -20 F1PBZ -2 / - 2 Partial capture
10-09 18:06 80m -5 / -9 DO5PY -4 / -15 4 ✓ Full exchange observed
10-09 18:03 80m -3 / -9 DO1OAS -5 / - 3 ✓ Closing observed
10-09 18:00 80m -6 / -12 DK7AO +4 / -4 3 Partial capture
10-09 17:50 80m -6 / - UA3QGT - / - 2 Partial capture
10-09 17:43 80m -4 / -24 UT2SQ +9 / -11 9 ✓ Full exchange observed
10-09 17:42 80m - / - DA6WA -18 / - 3 Partial capture
10-09 17:40 80m - / -11 DA3W +2 / - 2 Partial capture
10-09 17:34 80m - / - LY8O +6 / - 2 Partial capture
10-09 17:34 80m -2 / -11 SP9PLK +13 / -13 7 ✓ Full exchange observed
10-08 11:25 40m -14 / - DJ0CL - / - 4 Partial capture
10-08 11:23 40m -12 / - ON4FHM - / -12 3 ✓ Closing fragment
10-08 11:20 40m -10 / -19 HA8CSY -14 / -13 6 ✓ Full exchange observed
10-08 11:10 40m -10 / - 9A1CC - / -2 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m
UTC    dB Audio  Message
173845  -7  663  DM8MH UR5XPC KO40
174445  -4  667  CQ DM8MH JO51 (x4)
174745  -8  667  R2EA/P DM8MH
174800  +0 2572  DM8MH YU65AEC -09
174815  -6  667  R2EA/P DM8MH R-18 (x2)
175015  +1  666  SQ6JFJ DM8MH JO51
175030  -8 1698  DM8MH SQ6JFJ -12 (x2)
175115  -8  666  SQ6JFJ DM8MH 73
180330  -9  666  DO5SMH DM8MH JO51 (x2)
40m
UTC    dB Audio  Message
175630 -11  822  CQ DM8MH JO51 (x2)
175730  -6  822  OV5SP DM8MH -09 (x3)
170100  -8 2475  DM8MH M1DBB -10 (x3)
170245 -19 1267  M1DBB DM8MH R-11
170330  -7 2475  DM8MH M1DBB RR73
170415 -17 1267  M1DBB DM8MH 73
170445 -11 1267  EU4BE DM8MH R+00 (x2)
171200  -1  699  DM8MH RN6MA -14 (x2)
20m
UTC    dB Audio  Message
093815  -3  693  CQ DM8MH JO51 (x3)
094000 +10  694  DM8MH RW3ATR RR73
094100 -12  600  DM8MH RR73; 9A6NWW <...> +04
094245 -11  693  CQ DM8MH JO51 (x5)
094815  -1  692  EA3IVC DM8MH -17 (x2)
095015  -6 1681  DM8MH DJ3JA +00 (x2)
095330  -3  692  R4CBF/P DM8MH JO51
60m
UTC    dB Audio  Message
180445 -12  819  DF9AO DM8MH JO51
180715  -6 1136  DM8MH DL0ROI -13 (x2)
180900 -21 1435  DM8MH DF9AO RR73
181145 -12 1281  DM8MH DC9YC -04 (x2)
052145  -3  693  DM8MH SP9SOS -13 (x2)
10m
UTC    dB Audio  Message
162545 -10  730  EA3JFF DM8MH -12 (x2)
162645  -3  730  CQ DM8MH JO51 (x3)
163215  -7  730  HG8LXL DM8MH -05 (x2)
163315  -9  730  CQ DM8MH JO51 (x2)
103915  -9  750  DM8MH LZ2VQ -06 (x2)

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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