SP7TAC — 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: JO91

Receiver-side FT8 activity involving SP7TAC, decoded by SO8OO in southeastern Poland. 300 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 30 UTC dates in the available aggregate history. Observed between 2026-08-21 and 2026-10-22.

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 300 FT8 messages attributed to SP7TAC 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 (37%), followed by 80 m (28%) and 160 m (26%). Most decodes (75%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -5 dB.

Overview

300

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 78 80m · 84 60m · 26 40m · 112

First attributed message: 2026-08-21
Last attributed message: 2026-10-22 19:41 UTC

Observed FT8 message patterns

Attributed sample: 300 messages
Active dates: 30 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -15 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 19, moderate (-15 to -9 dB) 80, strong (≥ -8 dB) 201.

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 SP7TAC in decoded directed-looking exchanges:

HA5AO · Hungary ×2 OE3PBS · Austria ×2 3A2MW · Monaco ×2 DL9KM · Fed. Rep. of Germany ×2 DK7ZT · Fed. Rep. of Germany ×2 S57TW · Slovenia ×2 YL2JZ · Latvia ×2 HA7TM · Hungary ×2 EW8R · Belarus ×2 9J2FI · Zambia CN8WK · Morocco DL1UDO · 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 SP7TAC

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: JO91 · 140 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 262 km (approx.)
Last such locator decoded: 2026-10-22 19:31 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	SP7TAC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 19:39	80m	+3 / -	LX1JH	- / -2	5	Partial capture
10-22 19:34	80m	-1 / -	IZ0COC	- / -2	5	Partial capture
10-22 19:32	80m	+3 / -	DO6NIK	- / -10	2	Partial capture
10-22 19:29	80m	-4 / -2	DO7BE	+8 / -5	4	✓ Full exchange observed
10-22 19:28	80m	- / -2	DO1ID	+2 / -	4	Partial capture
10-22 19:27	80m	+7 / -	SM7TZK	+1 / -4	3	✓ Closing observed
10-22 19:27	80m	-9 / -8	DO5HOK	+2 / -9	4	Partial capture
10-21 18:03	160m	- / -	DK9BF	-11 / -	5	Partial capture
10-21 18:01	160m	-9 / -	IK4DRY	- / +3	13	Partial capture
10-21 17:56	160m	-1 / -9	G6CUT	-21 / -8	11	✓ Full exchange observed
10-21 17:49	160m	-13 / -	SQ9PBV	- / -11	2	Partial capture
10-21 17:47	160m	-14 / -23	G6CUT	-21 / -15	5	Partial capture
10-20 20:13	60m	- / +2	DK7ZT	+2 / -	2	Partial capture
10-20 20:11	60m	-8 / -	SP2EWQ	-2 / +9	6	✓ Full exchange observed
10-20 20:09	60m	-12 / +6	DL/OE6BVG	+2 / +4	3	Partial capture
10-20 20:07	60m	-14 / -7	OZ1LGJ	-16 / -4	5	✓ Full exchange observed
10-20 20:06	60m	-11 / +8	ON7GB	+9 / +3	11	✓ Full exchange observed
10-20 20:05	60m	-9 / 0	OH1LA	-17 / -5	5	Partial capture
10-20 20:03	60m	- / -12	LZ2VQ	+3 / -	5	✓ Closing fragment
10-20 20:02	60m	-11 / +2	SP3JHZ	-2 / -	5	✓ Closing observed
10-20 20:00	60m	-10 / -24	SQ8AA	-8 / -5	5	✓ Full exchange observed
10-20 14:10	10m	- / -7	CN8WK	+1 / -	3	✓ Closing fragment
10-15 16:45	160m	-8 / -	H49A	- / -	3	Partial capture
10-15 16:44	160m	-12 / -7	OH5KNL	-6 / -4	4	✓ Full exchange observed
10-15 07:38	60m	-11 / -	DK2CC	- / -	3	Partial capture
10-13 18:18	160m	-14 / -12	HA5AO	-5 / -2	6	✓ Full exchange observed
10-12 19:11	160m	-9 / -7	SP9UPH	+11 / -	5	✓ Full exchange observed
10-12 19:09	160m	-5 / -	RA4Y	- / -16	3	✓ Closing fragment
10-07 18:40	160m	-12 / -	R7KCK	- / -11	2	✓ Closing fragment
10-07 18:37	160m	-12 / -	SV4FFK	- / -	2	Partial capture
10-07 18:35	160m	-18 / -19	DG1VT	-4 / -	5	✓ Closing observed
10-03 16:28	160m	-14 / -20	R80SAA	-14 / -	3	Partial capture
10-01 08:29	40m	-14 / -	FK4AP	- / -	2	Partial capture
09-30 19:35	160m	-16 / -5	OE3PBS	-21 / -18	5	✓ Full exchange observed
09-30 19:33	160m	-9 / -13	EW6CB	-13 / -5	5	✓ Full exchange observed
09-30 19:31	80m	+7 / -	SQ100PKP	+16 / +6	3	Partial capture
09-30 19:29	80m	- / -	G4DBW	-8 / -	2	Partial capture
09-30 19:28	80m	-1 / +2	HF100PKP	-3 / -	2	Partial capture
09-26 18:07	160m	-8 / -23	PA3FR	-13 / -12	5	✓ Full exchange observed
09-26 18:06	160m	-6 / -13	F1PBZ	+4 / -9	4	✓ Full exchange observed
09-26 18:04	160m	-12 / -10	SQ7LQT	-2 / -8	3	✓ Full exchange observed
09-26 18:03	160m	-11 / +6	SP3BPU	+14 / +9	5	✓ Full exchange observed
09-26 12:16	10m	- / -3	9J2FI	+5 / -	2	✓ Closing fragment
09-23 21:37	40m	- / -13	UA9CR	-4 / -	2	✓ Closing fragment
09-21 17:34	160m	- / -14	SQ7LQT	-18 / -	2	Partial capture
09-21 17:32	160m	- / -12	SP5GW	-2 / -	2	Partial capture
09-21 14:40	40m	-6 / -	KH8WW	- / -	11	Partial capture
09-21 06:00	40m	- / -1	DH1NGL	-2 / -	4	Partial capture
09-21 05:59	40m	-10 / 0	YL2JZ	-8 / -	3	✓ Closing observed
09-18 12:58	40m	-8 / -	OM1AN	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
193000  +5  237  SP7TAC DO1ID -02
193015  +7  304  SP7TAC DO7BE 73
193115  +6 1546  RW1AI SP7TAC JO91
193230  +3 2837  DO6NIK SP7TAC -10 (x2)
193400  +3  817  IZ0COC SP7TAC -02 (x5)
193900  +2 2785  LX1JH SP7TAC -02 (x5)

160m

UTC    dB Audio  Message
180245  -6  717  IK4DRY SP7TAC +03
180300 -13 1739  SP7TAC DK9BF JO42
180315 -18  717  IK4DRY SP7TAC +03
180330  -7 1738  SP7TAC DK9BF JO42
180345 -17  717  IK4DRY SP7TAC +03
180400 -13 1738  SP7TAC DK9BF JO42
180415 -15  718  IK4DRY SP7TAC +03
180430 -13 1738  SP7TAC DK9BF JO42
180445 -15  717  IK4DRY SP7TAC +03
180500 -11 1738  SP7TAC DK9BF JO42
180515  -3  717  IK4DRY SP7TAC +03 (x5)

60m

UTC    dB Audio  Message
200945 -11 1529  DL/OE6BVG SP7TAC +04
201000  +6 2547  SP7TAC ON7GB R+08
201015 -11 1530  ON7GB SP7TAC RR73
201030  +7 2548  SP7TAC ON7GB 73
201045 -13 1530  DL/OE6BVG SP7TAC +03
201100  +2 1529  SP7TAC DL/OE6BVG R+06
201145 -14 1530  SP2EWQ SP7TAC +09
201200  -3 1920  SP7TAC SP2EWQ JO93 (x2)
201245  -3  454  F5FDV SP7TAC -17
201300  +0 1920  SP7TAC SP2EWQ R+20
201315  -3  454  SP2EWQ SP7TAC RR73
201330  -3 1920  SP7TAC SP2EWQ 73
201330  +4 2483  SP7TAC DK7ZT +02 (x2)

10m

UTC    dB Audio  Message
130000 -18 1533  SP7TAC DF8IJ JN48 (x6)
130430  -6 2164  SP7TAC ON7HM JO10
143345 -11  728  SP7TAC LZ3CB KN32 (x3)
121645  +3 2969  SP7TAC 9J2FI -03 (x2)
141015  +0 2232  SP7TAC CN8WK R-07 (x3)

40m

UTC    dB Audio  Message
144030  -6 1152  KH8WW SP7TAC JO91 (x11)
213700  +0 2538  SP7TAC UA9CR -13 (x2)
082900 -13 1762  FK4AP SP7TAC JO91 (x2)

20m

UTC    dB Audio  Message
085000  +3 2912  SP7TAC F4BYA JN19
085030 +12  708  SP7TAC PD3LKN JO22
085030 +10 2911  SP7TAC F4BYA JN19
085100  +9  708  SP7TAC PD3LKN R-07 (x2)
122930  +2 2796  SP7TAC PD0PWH JO21 (x2)
124230  +8 2910  SP7TAC F4BYA JN19 (x3)
151115  -7 3044  SP7TAC AP2AM -12 (x2)
151245  -3 1690  SP7TAC F5OYA/P +00 (x2)
151545  -2 1681  SP7TAC M7GJO -08

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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