SQ8CK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving SQ8CK, decoded by SO8OO in southeastern Poland. 83 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-30 and 2026-08-20.

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 83 FT8 messages attributed to SQ8CK as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 20 m (8%) and 80 m (4%). Most decodes (84%) fell within the six-hour window 14:00-20:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 3 40m · 73 20m · 7

First attributed message: 2026-06-30
Last attributed message: 2026-08-20 18:44 UTC

Observed FT8 message patterns

Attributed sample: 83 messages
Active dates: 12 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -17 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 15, moderate (-15 to -9 dB) 31, strong (≥ -8 dB) 37.

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 SQ8CK in decoded directed-looking exchanges:

OZ9FF · Denmark ×2 PD1DRE · Netherlands SV1EAG · Greece SV5AZK · Dodecanese 9A4ZM · Croatia DM5JBN · Fed. Rep. of Germany E74K · Bosnia-Herzegovina HA4GHR · Hungary HG8LXL · Hungary LX1RFJ · Luxembourg LZ3HG · Bulgaria MI0NWA · Northern Ireland

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	SQ8CK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-12 17:45	80m	- / -12	OK1UOZ	+18 / -	2	✓ Closing fragment
09-12 17:22	40m	- / -12	HG8LXL	-12 / -	4	✓ Closing fragment
08-20 18:43	40m	+9 / -	SQ7SE	-8 / -12	5	✓ Closing observed
08-20 18:00	20m	- / -14	XU7O	-4 / -	2	Partial capture
08-18 17:46	40m	-6 / -	SP6AMI	- / -4	4	Partial capture
08-13 18:56	80m	- / -5	SQ7SE	+2 / -	3	Partial capture
08-11 19:36	80m	-12 / -	SN0GIP	+14 / -14	3	✓ Closing observed
08-07 18:18	40m	-11 / -	IV3IEA	- / -8	3	Partial capture
08-07 17:09	40m	-18 / -	SQ8LE	- / 0	2	Partial capture
08-06 19:29	40m	-12 / -9	LX1RFJ	-22 / -11	3	✓ Full exchange observed
08-06 18:59	40m	-12 / -15	E74K	-4 / -9	3	✓ Full exchange observed
08-02 06:33	40m	- / -24	9A4ZM	-12 / -	2	✓ Closing fragment
08-02 06:32	40m	- / -1	OE1AVO	-14 / -	2	✓ Closing fragment
07-31 05:07	40m	-9 / -	OE4BHF	- / +2	4	Partial capture
07-31 04:32	40m	-8 / -	IK4LZH	- / -8	2	Partial capture
07-31 04:29	40m	-7 / -	WA2HIP	- / -19	4	Partial capture
07-31 04:25	40m	-8 / -15	SP6LUT	-8 / -12	9	✓ Full exchange observed
07-31 04:25	40m	-5 / -3	<...>	-4 / -1	2	Partial capture
07-24 19:11	40m	-14 / -	OE3PBS	- / -4	3	Partial capture
07-24 18:54	20m	+6 / -	MM0JTV	- / -16	2	Partial capture
07-23 14:36	20m	-15 / -16	SV5AZK	-9 / -	11	✓ Closing observed
07-10 18:52	20m	+4 / -5	OZ9FF	-10 / +3	3	✓ Full exchange observed
07-10 18:31	40m	-4 / -16	SV9QWC	-12 / -11	8	✓ Full exchange observed
07-03 18:27	40m	-20 / -8	HA4GHR	-16 / -3	4	✓ Full exchange observed
07-03 18:23	40m	- / -2	OK2USB	+4 / -	2	✓ Closing fragment
07-03 17:32	20m	- / -12	PD1DRE	-6 / -	2	✓ Closing fragment
07-03 15:46	40m	-10 / -11	DM5JBN	-8 / -4	3	✓ Full exchange observed
07-02 18:36	40m	-8 / -	II8WWA	- / -12	2	Partial capture
07-02 18:32	40m	-14 / -	YU7AS	- / -12	2	Partial capture
07-02 18:26	40m	-6 / -	MW6IUT	- / -22	2	Partial capture
07-02 18:21	40m	-15 / -	PD2MAC	- / -15	3	Partial capture
07-02 18:17	40m	-14 / -8	SV1BLD	-6 / -9	3	✓ Full exchange observed
07-02 18:09	40m	-18 / -	OZ9FF	- / 0	2	✓ Closing fragment
06-30 17:57	40m	-5 / -	II9WWA	- / -11	3	Partial capture
06-30 17:52	40m	-2 / -	II9WWA	- / -11	4	Partial capture
06-30 17:31	80m	-10 / -11	OM1II	+4 / -	3	✓ Closing observed
06-30 17:20	40m	-12 / -	8A1WWA	- / -13	3	Partial capture
06-30 17:07	40m	- / -1	DK7ZT	-20 / -	4	Partial capture
06-30 17:00	40m	- / +3	DK7ZT	-24 / -	2	Partial capture
06-30 16:58	40m	-17 / -	OH1CIN	- / -14	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
174615  -2 2415  SP6AMI SQ8CK -04 (x4)
184300  +7 2429  SQ7SE SQ8CK -12 (x4)
184445  -8 1859  SQ8CK SQ7SE 73
172245 -10 2119  SQ8CK OH5KNL 73
172245 -12 1647  SQ8CK HG8LXL KN06 (x4)
050000 -15  758  SQ8CK MI0NWA 73

80m

UTC    dB Audio  Message
173115  +1 2300  SQ8CK OM1II R-11
173130 -10 2731  OM1II SQ8CK RR73
173145  +8 2300  SQ8CK OM1II 73
192900  -5 1110  SQ8CK SN0WWA R-11
192930  -8 1110  SQ8CK RR73; IQ4JO <...> -16
193645 -13 2165  SN0GIP SQ8CK -14 (x2)
193730 +14 1921  SQ8CK SN0GIP 73
185600  -4 1446  SQ8CK SQ7SE R-05 (x3)
174500 +20 2583  SQ8CK OK1UOZ R-12 (x2)

20m

UTC    dB Audio  Message
143645 -17 2441  SV5AZK SQ8CK RR73
143700 -10 2170  SQ8CK SV5AZK R-16
143715 -13 2440  SV5AZK SQ8CK RR73
143730 -12 2170  SQ8CK SV5AZK R-16 (x6)
185445  +5 2334  MM0JTV SQ8CK -16 (x2)
181230 -24 1846  SQ8CK SV1EAG 73
182630  -9  826  SQ8CK MI0JZZ R-10
180000  -4  485  SQ8CK XU7O R-14 (x2)

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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