SM5DYQ — 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: Sweden Most frequent locator attributed to this token: JO78

Receiver-side FT8 activity involving SM5DYQ, decoded by SO8OO in southeastern Poland. 11 FT8 messages attributed to this token as transmitter, on 40m, 10m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-30 and 2026-10-17.

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 11 FT8 messages attributed to SM5DYQ as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 10 m (36%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 7 10m · 4

First attributed message: 2026-09-30
Last attributed message: 2026-10-17 11:46 UTC

Observed FT8 message patterns

Attributed sample: 11 messages
Active dates: 3 UTC dates
Estimated median S/N: -17 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 0.

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).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SM5DYQ in decoded directed-looking exchanges:

CR7BRV · Portugal F1IQH · France F4IIX · France F6FHZ · France PE1NPS · Netherlands R4FDD · European Russia SP7TF · Poland US3EW · Ukraine OZ3AEV · Denmark

Most frequent locator attributed to SM5DYQ

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: JO78 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,048 km (approx.)
Last such locator decoded: 2026-10-17 11:46 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 UTC	Band	SM5DYQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-17 11:30	10m	-18 / -	PP5GP	- / -	2	Partial capture
10-17 11:10	10m	- / -	EA4IDN	-11 / -	2	Partial capture
10-10 16:05	40m	-14 / -9	F1IQH	-12 / -	7	✓ Closing observed
10-09 07:39	40m	- / -11	SP7TF	-4 / -	2	✓ Closing fragment
10-09 04:24	40m	- / -16	US3EW	-6 / -	4	✓ Closing fragment
10-09 04:21	40m	- / -	RC5F	-2 / -	3	Partial capture
10-09 04:20	40m	- / -	UA3VVA	-18 / -	6	Partial capture
10-09 04:15	40m	- / -22	F4IIX	-12 / -	3	✓ Closing fragment
10-04 22:21	40m	- / -	IU6WUU	-7 / -	6	Partial capture
10-04 22:21	40m	- / -2	F6FHZ	-18 / -	3	✓ Closing fragment
10-04 22:20	40m	- / -	HB9CNU	0 / -	5	Partial capture
10-04 02:48	40m	- / -	EA4TA	-17 / -	2	Partial capture
10-04 02:46	40m	- / -4	R4FDD	+8 / -	2	✓ Closing fragment
10-04 02:45	40m	- / -	R6OK	0 / -	2	Partial capture
09-30 05:16	40m	-18 / -	ON8WR	- / -18	2	Partial capture
09-30 05:11	40m	-16 / -2	CR7BRV	-18 / -13	4	✓ Full exchange observed
09-29 16:26	40m	- / -9	PE1NPS	-8 / -	3	✓ Closing fragment
09-27 07:39	40m	- / -	DL9KM	-6 / -	7	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
110745 -10  410  CQ SM5DYQ JO78                        a1
111000 -14 1931  SM5DYQ EA4IDN IN70 (x2)
113015 -19 1256  PP5GP SM5DYQ JO78 (x2)
114645 -23 1257  CQ SM5DYQ JO78                        a1

40m

UTC    dB Audio  Message
042400 -19 1413  SM5DYQ UA3VVA LO06
042430  -7  594  SM5DYQ US3EW KN78
042430 -12 1413  SM5DYQ UA3VVA LO06
042500  -4  594  SM5DYQ US3EW R-16 (x3)
073900  -8  540  SM5DYQ SP7TF -11 (x2)
160515 -12  953  SM5DYQ F1IQH JN27 (x5)
160730 -14  952  F1IQH SM5DYQ RRR
160745  -8  953  SM5DYQ F1IQH 73

80m

UTC    dB Audio  Message
154445  -4  917  SM5DYQ OZ3AEV 73

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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