SP9JMZ — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP9JMZ, decoded by SO8OO in southeastern Poland. 2,853 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 25 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-01.

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 2,853 FT8 messages attributed to SP9JMZ as the transmitting token by decoded message structure across 25 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 40 m (19%) and 60 m (0%). Most decodes (52%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +3 dB.

Overview

2,853

Messages attributed

UTC dates decoded

348

Active 15-min windows

+3 dB

Estimated median S/N

Bands

80m · 2,309 60m · 1 40m · 542 20m · 1

First attributed message: 2026-06-13
Last attributed message: 2026-10-01 13:34 UTC

Observed FT8 message patterns

Attributed sample: 2,853 messages
Active dates: 25 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -13 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 198, moderate (-15 to -9 dB) 307, strong (≥ -8 dB) 2,348.

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 SP9JMZ in decoded directed-looking exchanges:

HA3GX · Hungary ×3 HA7TM · Hungary ×3 RC6OD · European Russia ×3 DO9BAU · Fed. Rep. of Germany ×3 DJ0MAB · Fed. Rep. of Germany ×2 DJ3HW · Fed. Rep. of Germany ×2 F1PBZ · France ×2 DK8EW · Fed. Rep. of Germany ×2 DL6EL · Fed. Rep. of Germany ×2 GJ0KYZ · Jersey ×2 IK4LZH · Italy ×2 MI0JZZ · Northern Ireland ×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 SP9JMZ

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 · 1,926 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 208 km (approx.)
Last such locator decoded: 2026-10-01 13:34 UTC

Other locator fields attributed to this token: JO80 (1).

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	SP9JMZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-01 13:34	40m	-16 / -	DB2VS	- / -6	2	Partial capture
10-01 13:32	40m	-18 / -12	IK4UPK	-10 / -	4	✓ Closing observed
10-01 13:31	40m	-16 / -	ON4ASV	-8 / -5	2	✓ Closing observed
10-01 12:43	40m	- / -9	R3GI	-16 / -	2	✓ Closing fragment
10-01 12:42	40m	- / -4	DL2USR	-12 / -	2	✓ Closing fragment
10-01 12:38	40m	-16 / +7	SP9GCZ	-8 / -2	5	✓ Full exchange observed
10-01 12:36	40m	-10 / -	SA7BXU	- / -19	4	✓ Closing fragment
10-01 12:35	40m	-9 / -	SP3EIE	- / -2	3	✓ Closing fragment
10-01 12:33	40m	-14 / -6	DK6WH	-8 / +4	5	✓ Full exchange observed
10-01 12:32	40m	-8 / -	IN3IZQ	- / -15	2	✓ Closing fragment
10-01 11:48	40m	-19 / -11	SQ7BCB	-12 / -1	6	✓ Full exchange observed
10-01 11:35	40m	-12 / -3	SP9DAT	-12 / +2	5	✓ Full exchange observed
10-01 10:38	40m	-14 / -8	IK2ZJR	-22 / -10	3	✓ Full exchange observed
10-01 10:34	40m	-20 / -	PI4IPA	- / -	2	Partial capture
10-01 10:32	40m	-16 / -	GJ0KYZ	- / -10	2	✓ Closing fragment
10-01 10:32	40m	-18 / -12	DF1IH	-11 / +1	6	✓ Full exchange observed
10-01 10:31	40m	-20 / -9	HA1BF	-5 / +1	4	✓ Full exchange observed
10-01 10:27	40m	- / -9	S53AK	-9 / -	8	✓ Closing fragment
09-16 14:59	40m	-7 / -	HB9AUW	- / -	2	Partial capture
09-16 14:57	40m	-2 / -	II7IAME	- / 0	3	Partial capture
09-16 14:55	40m	+1 / -5	II6IALU	-12 / -	2	Partial capture
09-16 14:54	40m	-6 / -5	OE5AMR	-1 / -2	5	✓ Full exchange observed
09-16 14:19	40m	-5 / -	R4CHN	- / -	4	Partial capture
09-16 14:17	40m	-5 / -	IN3IZQ	- / -	3	Partial capture
09-16 14:15	40m	-8 / -1	3Z100PKP	-7 / +3	3	Partial capture
09-16 14:11	40m	-4 / -15	SP4CGJ	-20 / -5	10	✓ Full exchange observed
09-16 14:10	40m	-4 / -	F1IQH	- / -16	7	✓ Closing fragment
09-16 13:37	40m	0 / 0	DL6EL	-2 / +1	5	✓ Full exchange observed
09-16 13:13	40m	- / -6	HA7TM	+6 / -	2	✓ Closing fragment
09-16 13:10	40m	- / -12	RK3DJW	-11 / -	2	✓ Closing fragment
09-16 13:09	40m	- / -20	R3KLE	-9 / -	3	✓ Closing fragment
09-16 13:07	40m	-14 / -	PD0JHM	-10 / -7	4	✓ Closing observed
09-16 12:25	40m	-16 / -	ON1DGN	- / -7	4	✓ Closing fragment
09-16 12:23	40m	-11 / 0	SQ9SET	-7 / -1	5	✓ Full exchange observed
09-16 12:22	40m	-16 / -	SP9UH	-17 / -13	4	✓ Closing observed
09-16 12:20	40m	-12 / -	UA4FKT	-22 / -8	6	Partial capture
08-24 11:51	20m	- / -26	LZ1RAY	+14 / -	3	Partial capture
08-01 20:38	80m	+4 / -	HA3GX	-1 / -8	3	✓ Closing observed
08-01 20:37	80m	+2 / -	DL1ARS	- / -13	2	✓ Closing fragment
08-01 20:35	80m	+1 / -13	RU3DNN	+8 / -6	4	✓ Full exchange observed
07-23 12:44	10m	- / -18	PA3BMB	-12 / -	2	✓ Closing fragment
07-23 12:32	10m	- / -23	PI4IPA	-18 / -	4	✓ Closing fragment
07-23 12:11	10m	- / -12	DH7DA	-8 / -	5	✓ Closing fragment
07-23 12:07	10m	- / -15	PA1HGM	-19 / -	2	✓ Closing fragment
07-23 12:03	10m	- / -17	DJ3HW	-2 / -	2	✓ Closing fragment
07-20 23:25	80m	+8 / -6	DH1HF	-16 / -13	4	✓ Full exchange observed
07-20 23:07	40m	- / -4	DL5DQZ	-4 / -	2	✓ Closing fragment
07-20 22:48	40m	- / -8	LZ1ZF	-15 / -	2	✓ Closing fragment
07-20 22:41	40m	- / -5	IK4LZH	0 / -	2	✓ Closing fragment
07-20 22:38	40m	- / -11	R2EA	-1 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
124130  -9 1866  SP9JMZ DK8EW RR73
124200 -12 2434  SP9JMZ DL2USR -04 (x2)
124330 -11 1098  SP9JMZ R3GI -09 (x2)
124615 -22 2114  MI7XHT SP9JMZ JO90
133015 -21 1936  CQ SP9JMZ JO90
133115 -16 2113  ON4ASV SP9JMZ R-05
133130  -8 2112  SP9JMZ ON4ASV RR73
133215 -19 2173  IK4UPK SP9JMZ JO90
133300 -10 2173  SP9JMZ IK4UPK -12 (x2)
133345 -18 2173  IK4UPK SP9JMZ 73
133415 -15 1024  DB2VS SP9JMZ JO90 (x2)

20m

UTC    dB Audio  Message
134600 -16 1452  SP9JMZ HB9CNU RR73
135430 -21 2021  SP9JMZ G3ROY -15 (x2)
181045  -7 1085  SP9JMZ DL6UM JO60 (x4)
181645 -17 2378  SP9JMZ EW1MN -14 (x2)
181945 -11 1275  SP9JMZ DL3EBJ -05
182345  -5 1710  SP9JMZ F4LZK -05 (x2)
115130 +14 1957  SP9JMZ LZ1RAY R-26 (x3)

80m

UTC    dB Audio  Message
232545  +4 1971  DH1HF SP9JMZ RR73
232600 -17 1213  SP9JMZ DH1HF 73
232615  +0 1971  CQ SP9JMZ JO90 (x3)
203530  +4 1151  SP9JMZ RU3DNN KO96
203545  +1 1968  RU3DNN SP9JMZ -06
203600 +11 1151  SP9JMZ RU3DNN R-13 (x2)
203645  -2 1967  CQ SP9JMZ JO90
203715  +7 1967  DL1ARS SP9JMZ -13 (x2)
203815  +4 1967  HA3GX SP9JMZ -08 (x2)
203900  -1 1962  SP9JMZ HA3GX 73

10m

UTC    dB Audio  Message
120715 -19 1419  SP9JMZ PA1HGM -15 (x2)
121145  -9 1115  SP9JMZ DH7DA -12 (x5)
122915 -23 2065  SP9JMZ OZ1BSM RR73
123215 -20 2156  SP9JMZ PI4IPA -23 (x4)
123645  -3 1936  SP9JMZ DN9SGE -15
124415 -20 1745  SP9JMZ PA3BMB -18 (x2)

60m

UTC    dB Audio  Message
055230 -11  533  DD6ZV SP9JMZ +02
232300 -18 2001  SP9JMZ F5RRS RR73

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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