SM7SMS — 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: JO77

Receiver-side FT8 activity involving SM7SMS, decoded by SO8OO in southeastern Poland. 102 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-11-04.

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 102 FT8 messages attributed to SM7SMS as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 40 m (49%). Several six-hour UTC windows tied for the largest share (58%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (75%); the estimated median was -2 dB.

Overview

102

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

80m · 52 40m · 50

First attributed message: 2026-06-09
Last attributed message: 2026-11-04 15:00 UTC

Observed FT8 message patterns

Attributed sample: 102 messages
Active dates: 8 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -15 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 76.

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 SM7SMS in decoded directed-looking exchanges:

M9PAS · England YV5YDT · Venezuela RI1FJZ · Franz Josef Land

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 SM7SMS

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: JO77 · 74 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 951 km (approx.)
Last such locator decoded: 2026-11-04 15:00 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	SM7SMS S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 02:32	40m	- / -	IU8RFW	-2 / -	2	Partial capture
11-05 02:31	40m	- / -	RN6HK	-6 / -	3	Partial capture
10-18 05:59	40m	- / -	M9PAS	-6 / -	2	✓ Closing fragment
10-18 05:57	40m	-11 / -	YV5YDT	- / -	3	✓ Closing fragment
10-17 20:33	40m	- / +5	IK4TVP	-18 / -	2	Partial capture
10-12 05:55	40m	- / -	M9PAS	-10 / -	2	Partial capture
09-16 18:00	80m	-6 / -	RI1FJZ	- / -8	8	✓ Closing fragment
09-04 22:08	80m	-1 / -	RI1FJL	- / -	5	Partial capture
09-04 21:53	80m	-1 / -	RI1FJL	- / -	17	Partial capture
09-02 16:15	80m	-16 / -	RI1FJL	- / -	7	Partial capture
09-02 16:00	80m	-18 / -	UN7LAN	- / -	5	Partial capture
09-02 04:46	80m	-8 / -	K6VHF/HR9	- / -	3	Partial capture
09-02 04:42	80m	-12 / -	RI1FJL	- / -	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
201845 -12  301  SM7SMS RA6OY KN88
203300 -20 2034  SM7SMS IK4TVP +05 (x2)
055715  -7 2006  YV5YDT SM7SMS JO77 (x3)
055900 -10  449  SM7SMS M9PAS IO83
060000  +3  359  SM7SMS PA2CV JO32
060000  -3  449  SM7SMS M9PAS 73
150045 -10 2005  BA4IE SM7SMS JO77
023100  -8 1863  SM7SMS RN6HK LN14 (x3)
023200  -1 2909  SM7SMS IU8RFW JN70 (x2)

80m

UTC    dB Audio  Message
220100  -5 1868  RI1FJL SM7SMS JO77 (x7)
180015  -7 2757  RI1FJZ SM7SMS JO77 (x8)

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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