SP3NJ — 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: JO81

Receiver-side FT8 activity involving SP3NJ, decoded by SO8OO in southeastern Poland. 251 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 12 UTC dates in the available aggregate history. Observed between 2026-10-02 and 2026-10-20.

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 251 FT8 messages attributed to SP3NJ as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (82%), followed by 40 m (12%) and 160 m (3%). Several six-hour UTC windows tied for the largest share (94%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

251

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

160m · 8 80m · 8 60m · 206 40m · 29

First attributed message: 2026-10-02
Last attributed message: 2026-10-20 18:50 UTC

Observed FT8 message patterns

Attributed sample: 251 messages
Active dates: 12 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -19 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 71, moderate (-15 to -9 dB) 105, strong (≥ -8 dB) 75.

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 SP3NJ in decoded directed-looking exchanges:

LZ2VQ · Bulgaria ×3 SM2OTU · Sweden ×3 SP9UPH · Poland ×2 SQ8OLS · Poland ×2 OZ9FF · Denmark ×2 CT7AUT · Portugal G4IRN · England HA5AO · Hungary YL3CW · Latvia DH0GBC · Fed. Rep. of Germany DL4DBM · Fed. Rep. of Germany DL8TV · Fed. Rep. of Germany

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 SP3NJ

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: JO81 · 104 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 379 km (approx.)
Last such locator decoded: 2026-10-20 18:48 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	SP3NJ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 16:15	80m	- / -6	SQ9KWY	+10 / -	3	✓ Closing fragment
10-20 18:49	60m	-12 / +3	DJ0MAB	-1 / -5	5	✓ Full exchange observed
10-20 18:47	60m	-13 / -2	OZ9FF	-9 / +4	7	✓ Full exchange observed
10-20 18:43	60m	-8 / +4	OM7AMA	0 / +8	5	✓ Full exchange observed
10-20 18:21	40m	- / -12	EA8UP	-1 / -	7	✓ Closing fragment
10-20 17:59	60m	- / +4	HA5UK	+4 / -	2	✓ Closing fragment
10-20 17:58	60m	-7 / -8	OZ9FF	-8 / +8	4	✓ Full exchange observed
10-20 17:50	60m	-8 / -1	F5PZT	0 / -	4	✓ Closing observed
10-20 17:49	60m	- / -	DF4WQ	-9 / -	4	Partial capture
10-20 17:47	60m	-13 / -14	HB9TLL	-12 / 0	8	✓ Full exchange observed
10-20 17:43	60m	-14 / +1	HA8RC	-8 / -2	4	✓ Full exchange observed
10-20 16:48	60m	-14 / +1	DL9ATW	-14 / -1	5	✓ Full exchange observed
10-20 16:46	60m	-16 / -	SP6SOZ	- / +8	3	✓ Closing fragment
10-19 16:54	60m	-12 / +8	LZ936BA	-7 / -4	3	Partial capture
10-19 16:51	60m	-10 / -2	OE5DML	+4 / +8	6	✓ Full exchange observed
10-19 16:49	60m	-13 / +2	DG9MDM	0 / -	5	✓ Full exchange observed
10-18 19:35	60m	- / -15	EC3A	-10 / -	2	✓ Closing fragment
10-18 19:03	160m	-18 / -9	YL3CW	0 / -8	5	✓ Full exchange observed
10-18 19:01	160m	-11 / -16	G4IRN	-4 / -	3	✓ Closing observed
10-18 18:33	60m	-22 / -8	SV1OML	-8 / -	4	✓ Closing observed
10-18 18:22	60m	-13 / -	TF1EIN	- / -3	3	✓ Closing fragment
10-18 18:16	60m	-13 / -2	EW6BZ	-4 / +7	5	✓ Full exchange observed
10-18 18:12	60m	-16 / -	4X1GA	- / -	6	Partial capture
10-18 18:10	60m	-20 / -	SP2EWQ	-8 / -	3	✓ Closing observed
10-18 18:09	60m	-16 / -	LZ936BA	- / -1	2	Partial capture
10-18 17:40	60m	- / -5	ER1CW	-9 / -	3	✓ Closing fragment
10-18 10:20	40m	- / -12	OE1AES	-3 / -	2	✓ Closing fragment
10-17 13:10	40m	-16 / -	G8KHF	- / -2	2	Partial capture
10-13 19:42	60m	-24 / -10	PA0LDE	-2 / -3	6	✓ Full exchange observed
10-13 19:41	60m	- / -2	SP9RM	-14 / -	4	✓ Closing fragment
10-13 19:41	60m	-19 / +7	OM5JG	-2 / +8	5	✓ Full exchange observed
10-13 19:29	60m	-15 / -4	EW2RA	+4 / -	5	✓ Full exchange observed
10-13 19:26	60m	-17 / -	SP8MTA	- / -10	4	✓ Closing fragment
10-13 19:22	60m	-19 / -8	YL2SW	-4 / +3	3	✓ Full exchange observed
10-13 19:15	60m	-14 / -14	IS0LAY	-12 / -3	3	✓ Full exchange observed
10-13 19:06	60m	-19 / -4	SP9UPH	-10 / -	3	✓ Closing observed
10-13 19:04	60m	-18 / -	US2YW	-6 / -	4	✓ Closing observed
10-13 19:03	60m	-15 / -2	IK4CBO	-1 / -	5	✓ Closing observed
10-13 19:01	60m	-17 / -4	SM2OTU	-9 / +5	5	✓ Full exchange observed
10-13 18:59	60m	-13 / -	<...>	- / -	2	Partial capture
10-13 18:45	60m	-16 / -	LA6OCA	- / -	2	✓ Closing fragment
10-13 18:15	40m	- / -11	EW8AAC	-10 / -	3	✓ Closing fragment
10-13 18:04	80m	-12 / -	S55X	- / -	5	Partial capture
10-13 17:59	160m	- / -20	DG6ITP	-7 / -	2	Partial capture
10-13 17:55	160m	-19 / -22	SP9UPH	+18 / -13	6	✓ Full exchange observed
10-13 17:54	160m	-15 / -8	HA5AO	+14 / -	3	✓ Closing observed
10-13 17:49	60m	-6 / -6	OE5YCP	-16 / -7	5	✓ Full exchange observed
10-13 17:39	60m	-8 / -3	F9IE	-4 / +2	4	✓ Full exchange observed
10-13 17:36	60m	-4 / +2	DL6ZXG	+8 / +6	5	✓ Full exchange observed
10-13 17:34	60m	-6 / -4	YO2UKG	+2 / +8	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
193915  -1 1462  SP3NJ SP4VIT +03 (x3)
194100  -8  808  DO5HOK SP3NJ JO81
194115  +2  809  SP3NJ DO5HOK -18
194130  -7  808  DO5HOK SP3NJ R-07
194145  -3  809  SP3NJ DO5HOK RR73
180430 -17 1504  S55X SP3NJ JO81 (x5)
161500 +11  836  SP3NJ SQ9KWY -06 (x3)

60m

UTC    dB Audio  Message
184345  -7  805  OM7AMA SP3NJ R+08
184400  -1  805  SP3NJ OM7AMA RR73
184415  -7  805  OM7AMA SP3NJ 73
184730 -13 2317  OZ9FF SP3NJ JO81
184745  -8 2317  SP3NJ OZ9FF -02
184800 -14 2317  OZ9FF SP3NJ JO81
184815  -9 2317  SP3NJ OZ9FF -02
184830 -15 2317  OZ9FF SP3NJ R+04
184845  -9 2317  SP3NJ OZ9FF RR73
184900 -11 2317  OZ9FF SP3NJ 73
184915  +0 2317  SP3NJ DJ0MAB JN49
184930 -10 2317  DJ0MAB SP3NJ -05
184945  +0 2317  SP3NJ DJ0MAB R+03
185000 -14 2317  DJ0MAB SP3NJ RR73
185015  -2 2317  SP3NJ DJ0MAB 73

40m

UTC    dB Audio  Message
181530 -10 1725  SP3NJ EW8AAC -12 (x2)
205815 -18 1605  SP3NJ TA2VUZ -18
131015 -15  882  G8KHF SP3NJ JO81 (x2)
102015  -4 1439  SP3NJ OE1AES -12 (x2)
182130  -2 1599  SP3NJ EA8UP -12 (x7)
182530  +9 2268  SP3NJ DL8TV RR73

160m

UTC    dB Audio  Message
175615 +17  803  SP3NJ SP9UPH JO90
175630 -19 1502  SP9UPH SP3NJ -13
175645 +17  702  SP3NJ SP9UPH R-22 (x2)
175900  -8 1406  SP3NJ DG6ITP -20 (x2)
190130  -4  940  SP3NJ G4IRN -16 (x2)
190215 -11  940  G4IRN SP3NJ 73
190315 -18 2142  YL3CW SP3NJ JO81
190330  +1 2142  SP3NJ YL3CW -09
190345 -16 2142  YL3CW SP3NJ R-08
190400  -1 2141  SP3NJ YL3CW RR73
190415 -21 2142  YL3CW SP3NJ 73
190745 -19 1599  OM2WQ SP3NJ JO81

10m

UTC    dB Audio  Message
104515  -9 1531  SP3NJ CT7AUT 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.

CW

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

Explore CW reception at SO8OO

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