SN7B — 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: Poland Most frequent locator attributed to this token: JO91

Receiver-side FT8 activity involving SN7B, decoded by SO8OO in southeastern Poland. 34 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-28 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 34 FT8 messages attributed to SN7B as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (79%), followed by 80 m (18%) and 40 m (3%). Most decodes (68%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (85%); the estimated median was +5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+5 dB

Estimated median S/N

Bands

160m · 27 80m · 6 40m · 1

First attributed message: 2026-08-28
Last attributed message: 2026-10-22 05:28 UTC

Observed FT8 message patterns

Attributed sample: 34 messages
Active dates: 5 UTC dates
Estimated median S/N: +5 dB
Estimated 10th-90th percentile: -14 to +10 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 3, strong (≥ -8 dB) 29.

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 SN7B in decoded directed-looking exchanges:

DL2ALF · Fed. Rep. of Germany W3LL · United States WF2A · United States RI1FJL · 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 SN7B

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: JO91 · 25 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 262 km (approx.)
Last such locator decoded: 2026-10-22 05:27 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	SN7B S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 05:26	160m	+9 / -	WF2A	- / -	4	✓ Closing fragment
10-21 05:28	160m	+4 / +4	DL2ALF	-11 / -18	7	✓ Full exchange observed
10-21 05:24	160m	+10 / -	<...>	- / +4	2	Partial capture
10-21 05:17	160m	+3 / -16	W3LL	-14 / -7	6	✓ Full exchange observed
08-30 22:51	160m	-12 / -	RI1FJL	- / -	2	Partial capture
08-30 22:44	160m	-13 / -	RI1FJL	- / -	5	Partial capture
08-30 22:15	160m	+10 / -	RI1FJL	- / -	2	Partial capture
08-28 01:02	80m	- / -	DK8HC	+3 / -	5	Partial capture
08-28 01:02	80m	- / -9	R2EA/P	-8 / -	2	Partial capture
08-28 01:02	80m	- / -	UA4FKT	+6 / -	2	Partial capture
08-28 01:00	80m	+7 / -	RI1FJL	- / -14	3	✓ Closing fragment
08-28 00:55	80m	+5 / -	RI1FJL	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
052700  +7 1568  CQ SN7B JO91 (x4)
052845 -11 2608  SN7B DL2ALF JO50
052900  +4 1568  DL2ALF SN7B -18
052915 -11 2608  SN7B DL2ALF R+04
052930  +3 1568  DL2ALF SN7B -18
052945 -11 2608  SN7B DL2ALF R+04
053000  +4 1568  DL2ALF SN7B RR73
053015 -10 2608  SN7B DL2ALF 73
052600  +7 1135  WF2A SN7B JO91 (x4)

40m

UTC    dB Audio  Message
204415  -5 2976  RI1FJL SN7B JO91

80m

UTC    dB Audio  Message
005545  +6 2523  RI1FJL SN7B JO91 (x5)
010200  +8  874  SN7B UA4FKT LO23
010200  -6 2219  SN7B R2EA/P -09
010200  +4  565  SN7B DK8HC JO42
010230  +3  874  SN7B UA4FKT LO23
010230 -11 2219  SN7B R2EA/P -09
010230  +2  565  SN7B DK8HC JO42
010300  +0  874  SN7B US2YW KN28
010300  +1  565  SN7B DK8HC JO42 (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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