SQ9SZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO90

Receiver-side FT8 activity involving SQ9SZ, decoded by SO8OO in southeastern Poland. 996 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, across 25 UTC dates in the available aggregate history. Observed between 2026-08-03 and 2026-10-06.

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 996 FT8 messages attributed to SQ9SZ 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 (95%), followed by 80 m (5%) and 60 m (1%). Most decodes (55%) fell within the six-hour window 07:00-13:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

996

Messages attributed

UTC dates decoded

117

Active 15-min windows

-11 dB

Estimated median S/N

Bands

80m · 46 60m · 6 40m · 944

First attributed message: 2026-08-03
Last attributed message: 2026-10-06 13:34 UTC

Observed FT8 message patterns

Attributed sample: 996 messages
Active dates: 25 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -18 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 223, moderate (-15 to -9 dB) 401, strong (≥ -8 dB) 372.

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 SQ9SZ in decoded directed-looking exchanges:

SP9XG · Poland ×6 DK5UR · Fed. Rep. of Germany ×4 SP4VIT · Poland ×4 SQ3RAX · Poland ×4 M0IEP · England ×3 HA1ZW · Hungary ×3 HA9OA · Hungary ×3 SP9BEB · Poland ×3 SP9MIV · Poland ×3 DF7NO · Fed. Rep. of Germany ×2 DL7UKM · Fed. Rep. of Germany ×2 DL7UVO · Fed. Rep. of Germany ×2

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 SQ9SZ

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: JO90 · 465 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 208 km (approx.)
Last such locator decoded: 2026-10-06 13:34 UTC

Other locator fields attributed to this token: JO81 (122) and JN99 (43).

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	SQ9SZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-07 08:10	40m	- / -9	SP9XG	-22 / -	2	✓ Closing fragment
10-07 08:02	40m	- / -11	IK2EBP	-19 / -	4	✓ Closing fragment
10-07 07:55	40m	- / -6	SP4VIT	-9 / -	3	✓ Closing fragment
10-07 07:48	40m	- / +9	PD5BUS	-18 / -	2	✓ Closing fragment
10-07 07:48	40m	- / -5	SQ3RAX	-1 / -	5	✓ Closing fragment
10-07 07:43	40m	- / -6	PD1ADA	-14 / -	5	✓ Closing fragment
10-07 07:40	40m	- / -	OH3JA	-18 / -	2	Partial capture
10-06 13:34	40m	- / -	SP5FCZ	-13 / -	3	Partial capture
10-05 16:42	40m	- / -6	DD3ZZ	-6 / -	2	Partial capture
10-02 05:44	40m	- / -	I4RHP	-4 / -	3	✓ Closing fragment
10-02 05:41	40m	- / -15	YO8RCA	-10 / -	4	✓ Closing fragment
10-02 05:38	40m	- / -	PD1HBL	-14 / -	3	Partial capture
10-02 05:33	40m	- / -18	DG5PW	-10 / -	5	✓ Closing fragment
10-01 18:13	40m	- / -5	PA8DC	0 / -	4	✓ Closing fragment
10-01 17:52	40m	- / -11	IQ4JO	+2 / -	4	Partial capture
10-01 17:48	40m	- / -8	M0MLS	-10 / -	13	Partial capture
10-01 17:32	40m	- / +2	DD3ZZ	0 / -	2	Partial capture
10-01 17:28	40m	- / 0	PA3GAN	-8 / -	7	✓ Closing fragment
10-01 17:27	40m	- / -3	DF7NO	-7 / -	4	✓ Closing fragment
09-29 10:45	40m	-16 / -	PD2XX	- / -	3	Partial capture
09-29 09:22	40m	-12 / -	DJ2MS	- / -22	4	Partial capture
09-29 09:20	40m	-10 / -	9A3AUH	-3 / +3	3	✓ Closing observed
09-29 09:15	40m	-15 / -	DJ2MS	- / -15	3	✓ Closing fragment
09-29 09:15	40m	-11 / -	LY5G	- / -8	3	✓ Closing fragment
09-29 09:12	40m	-16 / -	EI8GS	- / -	2	Partial capture
09-29 09:08	40m	-17 / -	SP4VIT	-16 / -3	4	✓ Full exchange observed
09-29 09:07	40m	-16 / +5	LZ3CB	+5 / +1	5	✓ Full exchange observed
09-29 09:03	40m	-14 / -	DL5CTE	- / -23	2	✓ Closing fragment
09-29 09:02	40m	-18 / -2	HA1ZW	-6 / +1	6	✓ Full exchange observed
09-28 14:06	40m	-16 / -	HF100PKP	-7 / -6	5	Partial capture
09-28 14:02	40m	-14 / -7	IW3IFJ	-11 / -10	5	✓ Full exchange observed
09-28 13:59	40m	- / -10	DH1AHL	-7 / -	5	✓ Closing fragment
09-25 03:34	40m	- / -11	R2EC	0 / -	2	✓ Closing fragment
09-25 03:01	40m	- / -18	RC9WC	-18 / -	3	✓ Closing fragment
09-25 02:52	40m	- / -9	SV3AUW	-16 / -	4	Partial capture
09-25 02:42	60m	- / -10	F5RMK	-7 / -	3	✓ Closing fragment
09-25 02:37	60m	- / -12	G0AZH	-4 / -	3	✓ Closing fragment
09-25 02:23	80m	- / -10	DO1OAS	+1 / -	3	✓ Closing fragment
09-25 02:12	40m	- / -16	RV4CC	-6 / -	5	✓ Closing fragment
09-25 02:07	40m	- / -12	EC3A	-6 / -	6	✓ Closing fragment
09-25 01:52	40m	- / -16	K2ZJ	-9 / -	4	Partial capture
09-25 01:51	40m	- / -11	R6ZB	-10 / -	5	✓ Closing fragment
09-25 01:47	40m	- / -12	EB3JT	-5 / -	3	✓ Closing fragment
09-25 01:41	40m	- / -17	R4FDK	-16 / -	4	✓ Closing fragment
09-23 13:11	40m	-2 / -11	SP8PZA	+6 / +2	7	Partial capture
09-23 13:08	40m	- / +1	OH3MB	-15 / -	4	✓ Closing fragment
09-23 13:07	40m	-2 / -11	SP8QC	+6 / +3	7	✓ Full exchange observed
09-23 12:59	40m	- / -	ON8LX	-18 / -	2	Partial capture
09-23 12:56	40m	-8 / -3	SP9XG	+2 / +5	5	✓ Full exchange observed
09-22 14:44	40m	-4 / -	M9PMB	- / -8	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
075000  -1  560  SQ9SZ SQ3RAX 73
075130 -23 2201  SQ9SZ HA5GGV JN97
075230 -10 1661  SQ9SZ 9A1CC JN75
075300  -6 2389  SQ9SZ SP4VIT JO93 (x4)
075730 -22 1416  SQ9SZ IK2EBP JN45 (x5)
081045 -23 2127  SQ9SZ SP9XG R-09
081100  -6 1100  SQ9SZ SP9MIV JO90
081115 -22 2127  SQ9SZ SP9XG 73

60m

UTC    dB Audio  Message
195730  -3 1585  SQ9SZ DL5DQZ R-05
195745  -9 1485  DL5DQZ SQ9SZ RR73
195800  -3 1585  SQ9SZ DL5DQZ R-05
195815 -16 1485  DL5DQZ SQ9SZ RR73
195830  -2 1585  SQ9SZ DL5DQZ 73
200215  -9 1629  CQ LOTA SQ9SZ JN99
201245 -14 1485  SQ9SZ <...> +00
201745 -16 1486  SQ9SZ SP5MIG/6 -02 (x2)
023745  -2  576  SQ9SZ G0AZH IO83 (x3)
024215  -8 1333  SQ9SZ F5RMK -10 (x3)

80m

UTC    dB Audio  Message
030645  -3 1545  CQ POTA SQ9SZ JO90
030715  -1 1545  DL7UKM SQ9SZ -06 (x2)
030830  +4 1543  SQ9SZ DL7UKM R-14
030845  -5 1545  DL7UKM SQ9SZ RR73
030900  +0 1543  SQ9SZ DL7UKM R-14
030945  -4 1671  DL7UKM SQ9SZ RR73
031015 -15 1671  CQ POTA SQ9SZ JO90 (x2)
031200 +12  504  SQ9SZ DO1DX JO30 (x2)
022030 -16  890  CQ POTA SQ9SZ JO90
022315  +2  691  SQ9SZ DO1OAS JO51 (x3)

160m

UTC    dB Audio  Message
025400 +10  594  SQ9SZ LA9GX JO59

20m

UTC    dB Audio  Message
094030  -1 1783  SQ9SZ DL6REX JO40 (x3)
174715  -7 1911  SQ9SZ M0IEP IO91 (x2)
072030  -8 1957  SQ9SZ HB9CNU JN37 (x2)
160215  +3 2307  SQ9SZ PD0PWH JO21 (x5)
160445  +1 2285  SQ9SZ M0IEP IO91 (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.

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