DH3YAK — 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: JO31

Receiver-side FT8 activity involving DH3YAK, decoded by SO8OO in southeastern Poland. 855 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 76 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-11-05.

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 855 FT8 messages attributed to DH3YAK as the transmitting token by decoded message structure across 76 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (98%), followed by 40 m (1%) and 20 m (0%). The busiest six-hour window was 01:00-07:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

855
Messages attributed
76
UTC dates decoded
211
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-11-05 19:05 UTC

Observed FT8 message patterns

Attributed sample
855 messages
Active dates
76 UTC dates
Estimated median S/N
-8 dB
Estimated 10th-90th percentile
-16 to 0 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 93, moderate (-15 to -9 dB) 294, strong (≥ -8 dB) 468.

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 DH3YAK

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
JO31 · 536 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,054 km (approx.)
Last such locator decoded
2026-11-05 19:04 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 UTCBandDH3YAK S/NCounterpartCounterpart S/NMsgsCapture
11-05 19:04 60m -16 / - UR5WD - / -19 2 Partial capture
11-05 18:24 60m -15 / - UR5WD - / - 4 Partial capture
11-04 16:55 60m -9 / -9 SV2DCD -2 / -18 5 ✓ Full exchange observed
11-03 20:47 60m -5 / - EA5JXP - / - 4 Partial capture
11-03 20:18 60m -6 / - EA5JXP - / - 2 Partial capture
11-03 20:01 60m -4 / - SM2LKW -14 / -6 5 ✓ Closing observed
11-03 19:53 60m -13 / - VE1YX - / -12 4 ✓ Closing fragment
11-01 06:58 60m -13 / - G7IGN - / +4 2 Partial capture
11-01 06:10 60m -9 / - PY7ZC - / - 7 Partial capture
11-01 02:08 60m +1 / - TN8GD - / -20 3 ✓ Closing fragment
10-31 17:01 60m +3 / - OH6FSO - / -19 3 ✓ Closing fragment
10-30 19:16 60m -2 / - OH5YZ - / -10 2 ✓ Closing fragment
10-30 19:07 60m -2 / - EA9AR - / +1 6 ✓ Closing fragment
10-30 04:25 60m - / - G3TKT -3 / - 4 Partial capture
10-30 04:21 60m -2 / - W0JM - / -24 8 ✓ Closing fragment
10-30 04:16 60m -4 / - K5VRX - / - 2 Partial capture
10-30 02:16 60m +1 / - N4RJ - / -18 3 ✓ Closing fragment
10-30 02:11 60m - / -15 F5OYA/P -7 / - 2 Partial capture
10-30 02:11 60m -1 / - PA/DG2EBG - / -8 3 Partial capture
10-29 23:35 60m -1 / - P4/WE9V - / -10 3 Partial capture
10-27 04:40 60m -5 / - NF6P - / - 3 Partial capture
10-26 21:29 60m -5 / - BG8KUB - / - 8 Partial capture
10-25 23:43 60m -20 / - S9R - / - 6 ✓ Closing fragment
10-25 23:31 60m -19 / - S9R - / - 7 Partial capture
10-25 18:35 60m -3 / - UT5UGR - / 0 2 ✓ Closing fragment
10-23 20:59 60m -16 / - EI6IZ -13 / +2 4 Partial capture
10-23 20:50 60m -21 / - Z68QQ - / 0 3 ✓ Closing fragment
10-23 00:30 60m -18 / - UT2UB - / - 3 Partial capture
10-23 00:26 60m -23 / -11 EP2AES -14 / -15 5 ✓ Full exchange observed
10-22 05:15 60m -6 / - UD6AWH - / - 2 Partial capture
10-21 18:12 60m -4 / - EA1BJE - / -9 3 ✓ Closing fragment
10-19 17:55 60m -2 / -14 RZ4LC +2 / -4 8 ✓ Full exchange observed
10-18 05:44 60m -10 / - EA3IJQ - / -20 4 ✓ Closing fragment
10-17 18:55 60m -6 / - PF1B -19 / +5 7 ✓ Full exchange observed
10-17 18:53 60m - / - OK8DCC -1 / - 3 Partial capture
10-17 18:52 60m -5 / -4 Z33ST -2 / - 5 ✓ Closing observed
10-16 02:58 60m -6 / - PY5CC - / - 4 Partial capture
10-16 02:21 60m -6 / -5 VP2MAW -8 / -6 5 ✓ Full exchange observed
10-14 19:06 60m -5 / - GT3MAN - / -15 3 ✓ Closing fragment
10-14 17:30 60m -3 / +1 YL2SW 0 / 0 5 ✓ Full exchange observed
10-14 05:20 60m -4 / +4 SM4TYA -24 / -1 5 ✓ Full exchange observed
10-13 23:16 60m -6 / - A92AE - / - 3 Partial capture
10-13 16:01 60m -1 / +3 DM5MA -3 / - 4 ✓ Full exchange observed
10-13 15:59 60m -1 / +2 GU0UVH -20 / -6 5 ✓ Full exchange observed
10-13 06:15 60m -1 / - ZL2CC - / -23 4 ✓ Closing fragment
10-13 06:10 60m -3 / - ZL2CC - / - 4 Partial capture
10-13 06:06 60m +2 / - ZL2CC - / - 4 Partial capture
10-13 06:01 60m +2 / - ZL2CC - / - 5 Partial capture
10-12 23:10 60m -18 / - EA8DQE - / -16 3 ✓ Closing fragment
10-12 17:52 60m -7 / -3 BD8ENU -4 / +5 7 ✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m
UTC    dB Audio  Message
204730  -3 1589  EA5JXP DH3YAK JO31 (x4)
165500  -8 1468  SV2DCD DH3YAK JO31
165515  -2 2740  DH3YAK SV2DCD -09
165530  -9 1468  SV2DCD DH3YAK R-18
165545  -2 2740  DH3YAK SV2DCD RR73
165600 -11 1468  SV2DCD DH3YAK 73
182430 -16 1470  UR5WD DH3YAK JO31 (x6)
80m
UTC    dB Audio  Message
175900 -19 1402  LY8O DH3YAK JO31
175915  +5 1854  DH3YAK LY8O -12 (x5)
180115 -19 2356  DH3YAK DA6WA JO30
180145  +2 1854  DH3YAK LY8O -12 (x2)
40m
UTC    dB Audio  Message
151215 -11 2004  DH8WC DH3YAK -06
135230  +0  384  DH3YAK IV3FSG JN65 (x4)
133900 -10 2248  DK4REX DH3YAK JO31 (x3)

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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