SP9ZR — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving SP9ZR, decoded by SO8OO in southeastern Poland. 518 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-20.

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 518 FT8 messages attributed to SP9ZR as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (69%), followed by 80 m (29%) and 20 m (2%). Most decodes (75%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -3 dB.

Overview

518

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 151 40m · 357 20m · 10

First attributed message: 2026-06-06
Last attributed message: 2026-09-20 08:22 UTC

Observed FT8 message patterns

Attributed sample: 518 messages
Active dates: 29 UTC dates
Estimated median S/N: -3 dB
Estimated 10th-90th percentile: -14 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 39, moderate (-15 to -9 dB) 95, strong (≥ -8 dB) 384.

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 SP9ZR in decoded directed-looking exchanges:

II6WWA · Italy ×2 SQ8LE · Poland ×2 DA0WWA · Fed. Rep. of Germany G4CFS · England II1WWA · Italy II7WWA · Italy KF0YOB · United States M3WHB · England ON7AN · Belgium R6DV · European Russia UA4FEN · European Russia 9A2L · Croatia

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 SP9ZR

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 · 332 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 208 km (approx.)
Last such locator decoded: 2026-09-20 08:17 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	SP9ZR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 08:21	40m	-2 / -3	UT4PA	+4 / +3	4	✓ Full exchange observed
09-20 08:19	40m	0 / -15	SP7TF	-4 / +6	6	✓ Full exchange observed
09-20 08:16	40m	0 / -	SK150LM	- / -	3	Partial capture
09-20 08:13	40m	-5 / -	SQ9LOJ	- / -	2	Partial capture
09-20 08:10	40m	-8 / -13	PA2RO	-12 / -4	8	✓ Full exchange observed
09-20 08:08	40m	0 / -	TF5B	- / -	4	Partial capture
09-20 08:05	40m	-12 / -	SQ9LOJ	- / -	3	Partial capture
09-20 07:58	40m	-6 / -	SQ9LOJ	- / -	2	Partial capture
09-04 20:02	80m	+11 / -	SN100PKP	- / -	4	Partial capture
09-04 19:55	80m	+14 / -	<...>	- / -	4	Partial capture
09-04 19:54	80m	+7 / -	OZ/DL3KWF	- / -	2	Partial capture
09-04 19:51	80m	+10 / -	<...>	- / -	3	Partial capture
09-04 19:25	40m	-13 / -1	OE6TNO	+3 / +4	4	✓ Full exchange observed
09-04 19:22	80m	+15 / -	3Z100PKP	- / -11	3	Partial capture
09-04 19:19	80m	+5 / -	SO100PKP	- / -	3	Partial capture
08-23 17:52	40m	-3 / +10	SQ3TGY	-8 / -5	7	✓ Full exchange observed
08-22 12:09	80m	-17 / -	CT3MD	- / -	2	Partial capture
08-22 11:40	40m	-3 / -	SQ3WL	- / -	10	Partial capture
08-13 21:02	80m	+8 / -13	F5RRS	+5 / +6	5	✓ Full exchange observed
08-13 21:01	80m	+6 / -7	LZ2VQ	+3 / -	4	✓ Closing observed
08-13 20:59	80m	+1 / -8	DK7ZT	+12 / -	5	✓ Full exchange observed
08-13 20:57	80m	0 / -10	SP7VCL	+18 / -	6	✓ Full exchange observed
08-13 20:36	40m	- / +6	S52D	-10 / -	2	✓ Closing fragment
08-11 22:58	40m	+1 / -	TN8GD	- / -21	7	✓ Closing fragment
08-11 22:54	40m	-2 / -	K1SM	- / -17	5	✓ Closing fragment
08-11 21:51	80m	+12 / -10	YU1NTP	-2 / -5	6	✓ Full exchange observed
08-11 21:44	80m	+15 / -15	EI5KG	-22 / -13	10	✓ Full exchange observed
08-11 21:33	80m	+4 / +3	SP9TEX	+10 / -4	4	✓ Full exchange observed
08-06 21:04	80m	+1 / -	CR5VP	- / -15	4	✓ Closing fragment
08-06 20:52	80m	0 / -	CR5VP	- / -	8	Partial capture
08-04 20:43	40m	- / -	G4DBW	-18 / -	2	Partial capture
08-04 19:53	80m	-2 / -10	F1ABL	-24 / -	3	Partial capture
08-04 19:51	80m	-8 / -	HB9EKJ	- / -	2	Partial capture
08-04 19:50	80m	+4 / -11	<...>	-8 / -11	2	Partial capture
08-04 19:46	80m	+5 / -10	SP2LMG	-5 / -10	6	✓ Full exchange observed
08-01 19:07	80m	-1 / -	SQ9MEZ	- / -	3	Partial capture
08-01 19:02	80m	-5 / -	SQ9AWN	- / -	5	Partial capture
08-01 17:32	40m	-10 / +1	SQ4PKO	-14 / +8	3	✓ Full exchange observed
08-01 17:30	40m	-11 / +1	SQ9MEZ	-5 / +8	5	✓ Full exchange observed
08-01 17:03	40m	-7 / -1	DK5UR	-9 / 0	5	✓ Full exchange observed
07-31 21:48	80m	+6 / -	5P1KZX	- / -	3	Partial capture
07-31 21:43	80m	-2 / -	DA6JN	+6 / -	5	✓ Full exchange observed
07-31 21:41	80m	-2 / +4	HF9D	+12 / +10	6	✓ Full exchange observed
07-31 21:38	80m	+3 / -14	G8OO	-12 / -6	5	✓ Full exchange observed
07-31 21:37	80m	+4 / -9	5P1KZX	0 / -4	4	✓ Full exchange observed
07-31 21:31	80m	+4 / -2	DO9BAU	+8 / +6	6	✓ Full exchange observed
07-31 21:31	80m	-1 / -	UA4FKT	+8 / -1	5	Partial capture
07-31 21:28	80m	+4 / -20	IK4LZH	+3 / -2	13	✓ Full exchange observed
07-31 21:23	40m	-10 / -	PY5QW	- / -	5	Partial capture
07-31 19:13	40m	+2 / -	SQ5PMB	- / -19	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
081430  -4 1744  SQ9LOJ SP9ZR JO90
081600  -3 1744  SK150LM SP9ZR JO90 (x3)
081815  +0 1375  OE/DG7CF SP9ZR R-06
081900  -7  548  SP9ZR SP7TF -15 (x2)
081945  +0 1376  SP7TF SP9ZR R+06
082000  -1  548  SP9ZR SP7TF RR73 (x2)
082045  +1 1376  SP7TF SP9ZR 73
082130  +5 1376  SP9ZR UT4PA KO20
082145  -5 1375  UT4PA SP9ZR +03
082200  +3 1376  SP9ZR UT4PA R-03
082215  +1 1143  UT4PA SP9ZR RR73

80m

UTC    dB Audio  Message
195115  +8  413  <...> SP9ZR JO90 (x3)
195345  +2 1005  DB100FT SP9ZR JO90
195445  +7 1019  OZ/DL3KWF SP9ZR JO90 (x2)
195545 +13  542  <...> SP9ZR JO90 (x5)
200215 +11  926  <SN100PKP> SP9ZR JO90 (x4)

20m

UTC    dB Audio  Message
161700  -5 1819  SP9ZR II1WWA RR73
173330 -15  577  SP9ZR KF0YOB +01 (x2)
173730  +3 2868  SP9ZR G4CFS IO91 (x3)
211745  -9  566  SP9ZR M3WHB -12 (x3)
102815 -10 1342  SP9ZR R6DV LN04 (x4)
193230 -17  830  SP9ZR A71UN +01
121345 -11 1404  SP9ZR GJ0KYZ -06

10m

UTC    dB Audio  Message
181100 -11  754  SP9ZR UA6BGM -08
092200 -15 1176  SP9ZR SV5ADM +01

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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