JQ3DYV — 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: Japan Most frequent locator attributed to this token: PM74

Receiver-side FT8 activity involving JQ3DYV, decoded by SO8OO in southeastern Poland. 9 FT8 messages attributed to this token as transmitter, on 20m, across 1 UTC dates in the available aggregate history. Last observed 2026-06-06.

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 9 FT8 messages attributed to JQ3DYV as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). In this small sample, the estimated median decoder S/N was -8 dB; no usual signal pattern is inferred.

Overview

9
Messages attributed
1
UTC dates decoded
1
Active 15-min windows
-8 dB
Estimated median S/N

Bands

First attributed message: 2026-06-06
Last attributed message: 2026-06-06 19:29 UTC

Observed FT8 message patterns

Attributed sample
9 messages
Active dates
1 UTC dates
Estimated median S/N
-8 dB
S/N percentile sample
Too small
Recurring-pattern threshold
Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 6.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Most frequent locator attributed to JQ3DYV

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
PM74 · 4 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
8,565 km (approx.)
Last such locator decoded
2026-06-06 19:29 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 UTCBandJQ3DYV S/NCounterpartCounterpart S/NMsgsCapture
11-03 15:15 40m - / - IK2YCW -3 / - 3 Partial capture
10-31 14:37 40m - / -20 R5AV -6 / - 2 Partial capture
10-20 15:39 40m - / -20 EV1R +8 / - 3 Partial capture
10-17 15:25 40m - / -23 RZ4AZ -10 / - 2 ✓ Closing fragment
10-15 14:41 40m - / -12 RV3F +5 / - 3 ✓ Closing fragment
10-03 15:04 40m - / -20 RU3GC +4 / - 2 ✓ Closing fragment
09-29 14:54 40m - / -18 RD7LC -11 / - 2 Partial capture
09-29 14:39 40m - / -10 OH1MA -7 / - 2 ✓ Closing fragment
09-23 15:26 40m - / -19 YO9PH +4 / - 2 Partial capture
09-08 15:18 40m - / -18 R5BM +2 / - 2 ✓ Closing fragment
08-30 16:20 80m - / -18 RC9F -12 / - 2 Partial capture
08-30 15:28 40m - / - US5RK -2 / - 3 Partial capture
08-30 15:25 40m - / -19 R7DX -6 / - 2 Partial capture
08-18 15:01 20m - / -14 RU4B -3 / - 3 ✓ Closing fragment
08-16 15:52 40m - / -15 RA6FCU -16 / - 2 ✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m
UTC    dB Audio  Message
144130  +5 2909  JQ3DYV RV3F R-12 (x2)
152500  -8  508  JQ3DYV RZ4AZ R-23 (x2)
153430 +11 2223  JQ3DYV EV1R -12 (x6)
143745  -9 2939  JQ3DYV R5AV -20 (x2)
151545  -5 2211  JQ3DYV IK2YCW JN55 (x3)
80m
UTC    dB Audio  Message
162000  -8 1934  JQ3DYV RC9F R-18 (x2)
20m
UTC    dB Audio  Message
150115  -5 2611  JQ3DYV RU4B LN28 (x3)

CW

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

Explore CW reception at SO8OO

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