SP1ZBRS — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland

Receiver-side FT8 activity involving SP1ZBRS, decoded by SO8OO in southeastern Poland. 93 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-21.

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 93 FT8 messages attributed to SP1ZBRS as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (40%), followed by 80 m (35%) and 40 m (19%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

160m · 5 80m · 33 60m · 37 40m · 18

First attributed message: 2026-06-06
Last attributed message: 2026-09-21 00:09 UTC

Observed FT8 message patterns

Attributed sample: 93 messages
Active dates: 10 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -15 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 45.

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 SP1ZBRS in decoded directed-looking exchanges:

Z335MK · North Macedonia ×3 OZ1NIB · Denmark ×2 HZ96ND · Saudi Arabia

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.

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	SP1ZBRS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 15:52	160m	- / -	RO7A	-16 / -	26	Partial capture
09-21 15:50	40m	- / 0	SP9TBT	-4 / -	4	Partial capture
09-21 15:44	160m	- / -	UA3OO	-1 / -	6	Partial capture
09-21 15:38	160m	- / -	R6FFB	-18 / -	3	Partial capture
09-21 15:04	160m	- / -	RV3LO	-24 / -	2	Partial capture
09-21 00:07	40m	- / -12	M7UKV	-5 / -	4	Partial capture
09-20 19:25	60m	- / -	SQ2BXI	-10 / -	2	Partial capture
09-20 19:18	60m	- / -7	SQ2BXI	-9 / -	8	Partial capture
09-20 19:09	80m	- / +2	SP9BEB	+22 / -	2	Partial capture
09-20 18:56	40m	- / -11	HA7TM	+12 / -	2	Partial capture
09-20 18:47	60m	-5 / -	<...>	- / -	3	✓ Closing fragment
09-20 18:47	60m	-7 / +1	OZ1NIB	-2 / -4	9	✓ Full exchange observed
09-20 18:45	80m	-5 / -	<...>	-9 / -	2	✓ Closing fragment
09-20 18:05	160m	- / -	SPQCW	+10 / -	2	Partial capture
09-20 17:35	80m	- / -	IV3IOU	-6 / -	2	Partial capture
09-20 16:14	160m	- / -23	RY3K	+12 / -	5	Partial capture
09-20 16:10	160m	- / -	RY3K	+14 / -	2	Partial capture
09-19 23:02	60m	- / -	IW1FRD	-15 / -	4	Partial capture
09-19 21:02	60m	-12 / -	<...>	+2 / -	2	✓ Closing fragment
09-19 21:01	60m	-10 / -12	LZ2VQ	0 / -10	3	Partial capture
09-19 20:52	80m	+3 / -7	DO8JB	-12 / -2	3	Partial capture
09-19 20:50	80m	0 / -	<...>	-4 / -	6	✓ Closing fragment
09-19 20:48	80m	-1 / -	M9OOS	- / -7	4	Partial capture
09-19 20:43	160m	-24 / -	<...>	+21 / -	2	✓ Closing fragment
09-19 20:40	160m	- / -	HA7TM	+15 / -	3	Partial capture
09-19 20:33	160m	-18 / -	<...>	-11 / -	4	✓ Closing fragment
09-19 07:31	40m	- / -	SP9BEB	+2 / -	5	Partial capture
09-19 04:41	80m	- / -	DJ4FAN	+1 / -	2	Partial capture
09-18 22:30	60m	- / -	DK7ZT	-7 / -	2	Partial capture
09-18 22:17	60m	- / -	DK7ZT	-10 / -	2	Partial capture
09-18 21:01	40m	- / -1	HB9CNU	-2 / -	2	Partial capture
09-18 20:52	80m	- / -	SP0LPR	-8 / -	4	Partial capture
09-18 19:53	60m	-12 / -	<...>	-9 / -	2	✓ Closing fragment
09-18 19:50	80m	-5 / -16	OH1LA	-17 / -15	2	Partial capture
09-18 19:50	80m	-10 / -	<...>	-13 / -	3	✓ Closing fragment
09-18 19:38	160m	- / -	<...>	+1 / -	2	✓ Closing fragment
09-18 19:10	40m	- / +7	DL5XL	0 / -	2	Partial capture
09-15 18:46	40m	-1 / -6	GJ0KYZ	-4 / -16	2	Partial capture
09-15 07:18	40m	- / -	DL8DCM	-12 / -	44	Partial capture
09-15 06:51	40m	- / -	9A5SPC	-11 / -	2	Partial capture
09-15 06:43	40m	- / -15	DL1NEO	-4 / -	9	Partial capture
09-15 06:20	40m	- / -16	UA4FKT	-21 / -	6	Partial capture
09-15 06:11	40m	- / -16	UA4FKT	-20 / -	3	Partial capture
09-15 05:21	40m	- / -18	YL3AKH	-12 / -	3	Partial capture
09-08 18:56	80m	- / -22	DK7ZT	+9 / -	5	Partial capture
09-08 16:08	40m	- / -4	SP4AC	-13 / -	3	Partial capture
09-08 04:49	80m	- / -15	K4YT	-10 / -	2	Partial capture
09-08 04:20	80m	- / -	OH1LA	-16 / -	2	Partial capture
09-08 04:03	80m	- / -18	Z35T	-1 / -	2	Partial capture
09-08 02:09	80m	- / -19	UT7EV	+10 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
155815 -13 1258  SP1ZBRS RO7A KN95 (x14)
160945 -14 1259  SP1ZBRS RA3QTT LO01

40m

UTC    dB Audio  Message
185515  -8 1658  CQ SP1ZBRS (x2)
185600 +11 1658  SP1ZBRS HA7TM JN97 (x2)
185700 +13 1657  SP1ZBRS <...> 73
185900  -5 1658  HB9DWR SP1ZBRS -13
000745 -10 1656  SP1ZBRS M7UKV IO82 (x4)
000945  -6 1656  HZ96ND SP1ZBRS 73
155045  -5 1658  SP1ZBRS SP9TBT JO90 (x4)

60m

UTC    dB Audio  Message
185145  -7 1333  OZ1NIB SP1ZBRS RR73
185215  -8 1333  SQ2BXI SP1ZBRS -18
185245  -4 1333  OZ1NIB SP1ZBRS RR73
185300  -4  245  SP1ZBRS <...> 73
191845  -8  245  SP1ZBRS SQ2BXI JO94 (x10)
053915 -17 1338  SP1ZBRS F4LRA +00

80m

UTC    dB Audio  Message
205200  +0  878  EA1IOK SP1ZBRS -20
205230  +0  878  <...> SP1ZBRS RR73
205245 -10  879  SP1ZBRS DO8JB JO32
205300  +3  878  DO8JB SP1ZBRS -02
205315 -15  879  SP1ZBRS DO8JB R-07
205330  +1  878  <...> SP1ZBRS RR73
205345  -4  879  SP1ZBRS <...> 73
173515  -4  875  SP1ZBRS IV3IOU JN65 (x2)
184545  -5 2358  <...> SP1ZBRS RR73
184600  -9 2358  SP1ZBRS <...> 73
190915 +22 2355  SP1ZBRS SP9BEB JO90 (x2)
205345 +18 2357  SP1ZBRS SP2AM R-09
044945 -23 2357  SP1ZBRS W9JOY EN55

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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