CALL — FT8 activity observed at SO8OO

Receiver-side FT8 activity involving CALL, decoded by SO8OO in southeastern Poland. 78 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-19.

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 78 FT8 messages attributed to CALL as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (35%), followed by 20 m (35%) and 80 m (27%). Most decodes (78%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 21 60m · 3 40m · 27 20m · 27

First attributed message: 2026-06-10
Last attributed message: 2026-09-19 17:53 UTC

Observed FT8 message patterns

Attributed sample: 78 messages
Active dates: 25 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -20 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 30, moderate (-15 to -9 dB) 24, strong (≥ -8 dB) 24.

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.

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	CALL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 19:45	80m	-4 / -	SQ100PKP	- / -	7	Partial capture
09-15 19:39	80m	-18 / -	PH82LIB	- / -	4	Partial capture
09-10 19:32	80m	-14 / -	SN40KZE	- / -	2	Partial capture
09-10 19:28	80m	-19 / -	SQ100PKP	- / -	2	Partial capture
08-31 14:25	40m	-14 / -	NO	- / -	2	Partial capture
08-23 20:50	40m	+4 / -	CHK	- / -	2	Partial capture
08-19 18:08	20m	-12 / -	LAST	- / -	2	Partial capture
08-17 18:39	80m	-10 / -	<...>	- / -	2	Partial capture
08-06 21:25	40m	-20 / -	<...>	- / -	6	Partial capture
08-06 21:24	40m	-17 / -	S5/M0MPM	- / -	2	Partial capture
08-06 21:20	40m	-20 / -	<...>	- / -	2	Partial capture
08-06 21:03	40m	-16 / -	<...>	- / -	3	Partial capture
08-06 20:58	40m	-16 / -	<...>	- / -	3	Partial capture
08-06 20:47	40m	-16 / -	<...>	- / -	7	Partial capture
07-30 17:21	20m	-12 / -	<...>	- / -	2	Partial capture
07-30 17:05	20m	-11 / -	<...>	- / -	4	Partial capture
07-26 16:28	20m	-12 / -	<...>	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
192315 -10  932  G4FHL CALL OK
190115 -11 2029  552 CALL ?? 7
175345 -14  921  UR CALL CX TO

80m

UTC    dB Audio  Message
192900 -20 2049  SQ100PKP CALL
193230 -13  808  SN40KZE CALL (x2)
193900 -18 1900  PH82LIB CALL (x4)
194400 -12  964  SN40KZE CALL
194500  -3  708  SQ100PKP CALL (x7)

40m

UTC    dB Audio  Message
210615 -15 1289  <...> CALL (x3)
212400 -18 1590  S5/M0MPM CALL (x2)
212530 -23 1590  <...> CALL (x6)
205000  +4 1532  CHK CALL 0Z (x2)
142530 -14 2006  NO CALL (x2)

20m

UTC    dB Audio  Message
190945 -12  969  <...> CALL (x10)
180800 -16 2302  LAST CALL DE (x2)
133245 -12 1738  II7GMMU CALL
074245 +11 3026  I CALL DX
144745 -15 1314  <...> CALL

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.

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