SP9ZR — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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. 528 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-24.

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 528 FT8 messages attributed to SP9ZR as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 80 m (29%) and 20 m (2%). Most decodes (74%) 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 (75%); the estimated median was -3 dB.

Overview

528

Messages attributed

UTC dates decoded

Active 15-min windows

-3 dB

Estimated median S/N

Bands

80m · 151 40m · 367 20m · 10

First attributed message: 2026-06-06
Last attributed message: 2026-10-24 08:44 UTC

Observed FT8 message patterns

Attributed sample: 528 messages
Active dates: 30 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) 394.

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:

4Z5ML · Israel CR7BUJ · Portugal EA8UP · Canary Islands UN7AM · Kazakhstan K1SM · United States MI7XHT · Northern Ireland OE6TNO · Austria PA2RO · Netherlands R5AV · European Russia S52D · Slovenia SP4GDW · Poland SP6TKK · Poland

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 · 335 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 208 km (approx.)
Last such locator decoded: 2026-10-24 08:41 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
10-31 12:52	10m	- / -6	4Z5ML	-2 / -	2	✓ Closing fragment
10-31 12:18	10m	- / -9	EA8UP	-6 / -	2	✓ Closing fragment
10-24 09:21	10m	- / -3	UN7AM	-14 / -	2	✓ Closing fragment
10-24 08:41	40m	-7 / +7	SP6TKK	-6 / -	5	✓ Full exchange observed
10-24 08:39	40m	-6 / -	DC7MA	- / -8	3	Partial capture
10-24 08:37	40m	-6 / -11	SP4GDW	-11 / +9	5	✓ Full exchange observed
10-10 18:02	40m	- / -	R2AL	+9 / -	3	Partial capture
10-10 17:58	40m	- / -14	MI7XHT	-10 / -	2	✓ Closing fragment
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

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
092145 -14 1144  SP9ZR UN7AM -03 (x2)
121715 -12 1166  SP9ZR CR7BUJ RR73
121845  -7 1752  SP9ZR EA8UP -09 (x2)
125200  +7 2707  SP9ZR 4Z5ML -06 (x2)

40m

UTC    dB Audio  Message
180315  +7 1207  SP9ZR R2AL KO85 (x2)
083745  -7 1017  SP4GDW SP9ZR JO90 (x2)
083830 -11 2476  SP9ZR SP4GDW -11
083845  -7 1017  SP4GDW SP9ZR R+09 (x2)
083945  -3 1017  DC7MA SP9ZR -08 (x3)
084130  -8 1315  SP6TKK SP9ZR JO90
084315  -7 1605  SP9ZR SP6TKK +07
084330  -6 1551  SP6TKK SP9ZR R+13
084345  -4 1606  SP9ZR SP6TKK RR73
084400  -7 1551  SP6TKK SP9ZR 73

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
121345 -11 1404  SP9ZR GJ0KYZ -06

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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