SP6ZLT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: JO81

Receiver-side FT8 activity involving SP6ZLT, decoded by SO8OO in southeastern Poland. 331 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-13.

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 331 FT8 messages attributed to SP6ZLT as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (81%), followed by 80 m (11%) and 20 m (8%). Most decodes (73%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

331

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 38 40m · 267 20m · 26

First attributed message: 2026-06-14
Last attributed message: 2026-09-13 07:21 UTC

Observed FT8 message patterns

Attributed sample: 331 messages
Active dates: 28 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -17 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 134, strong (≥ -8 dB) 145.

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 SP6ZLT in decoded directed-looking exchanges:

SP5RZL · Poland ×3 SP9CXN · Poland ×3 5P1KZX · Denmark ×2 G8IXM · England ×2 SP5HWB · Poland ×2 SQ5EKY · Poland ×2 EA5KB · Spain F5ADE · France LZ2HN · Bulgaria EA3AGF · Spain EA3HMM · Spain EA8UP · Canary Islands

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 SP6ZLT

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 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 379 km (approx.)
Last such locator decoded: 2026-08-30 18:59 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	SP6ZLT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 07:21	40m	- / -	IK2RZQ	-7 / -	2	Partial capture
09-13 07:20	40m	-1 / -13	SP5RZL	-2 / 0	4	✓ Full exchange observed
09-12 23:26	40m	- / -18	EB3JT	-9 / -	3	✓ Closing fragment
09-12 23:23	40m	- / -7	CR7BRV	-6 / -	2	✓ Closing fragment
09-12 23:13	80m	- / -	DO9BAU	0 / -	9	Partial capture
09-12 23:07	40m	- / -5	F4MBU	-6 / -	2	✓ Closing fragment
08-31 07:37	20m	- / -13	IQ4JO	+7 / -	3	Partial capture
08-30 18:58	40m	-11 / -	DJ0MAB	- / -	3	Partial capture
08-24 14:13	20m	- / -20	IR7MGGC	-1 / -	3	Partial capture
08-24 10:43	20m	- / -	ON4AOI	-16 / -	2	✓ Closing fragment
08-18 19:11	40m	- / -13	RN2F	-7 / -	2	✓ Closing fragment
08-16 20:30	40m	-9 / -	EA8UP	- / -14	2	Partial capture
08-15 21:50	40m	-10 / -3	DM2RM	+6 / +6	3	✓ Full exchange observed
08-11 16:57	20m	- / -19	HA1BF	+2 / -	4	✓ Closing fragment
08-10 18:18	80m	+1 / +2	SN0GIP	+3 / -3	5	✓ Full exchange observed
07-31 05:57	40m	-9 / -	OA4ENG	- / -16	3	Partial capture
07-31 05:55	40m	-12 / -	F5OZC	- / +1	2	✓ Closing fragment
07-31 05:52	40m	-10 / -	F5PBG	- / -4	2	✓ Closing fragment
07-31 05:51	40m	-12 / -	ON4KEB	- / -6	2	✓ Closing fragment
07-31 05:49	40m	-10 / -	G8IXM	- / -	2	✓ Closing fragment
07-31 05:47	40m	-15 / -	F6DKQ	- / +1	3	✓ Closing fragment
07-31 05:45	40m	-14 / -	IK2PZX	- / +3	2	✓ Closing fragment
07-30 21:09	80m	- / +6	DO5OT	-2 / -	4	Partial capture
07-30 21:06	80m	- / -11	SQ3LMR	-8 / -	3	Partial capture
07-30 21:02	80m	-5 / -7	8S7DL	+8 / 0	5	✓ Full exchange observed
07-30 21:00	80m	0 / -8	YR50NADIA	+14 / -5	4	✓ Full exchange observed
07-30 20:47	40m	-5 / +2	SP6TID	-6 / -5	4	✓ Full exchange observed
07-30 19:59	40m	-6 / -	LA2JKA	- / -15	2	Partial capture
07-30 19:53	40m	-9 / -5	YO9HP	-6 / -4	3	✓ Full exchange observed
07-30 19:53	40m	-3 / +9	OO26TRUDO	-6 / -3	4	✓ Full exchange observed
07-28 20:37	80m	-2 / +2	SP9UPH	+16 / +3	6	✓ Full exchange observed
07-28 20:35	80m	-3 / -19	DJ2AX	+7 / +3	6	✓ Full exchange observed
07-28 04:53	20m	- / -9	N8HRZ	+2 / -	3	✓ Closing fragment
07-26 21:45	40m	-13 / -	LZ7AT	- / -11	3	Partial capture
07-26 21:41	40m	-10 / -	MW0KJN	- / -1	4	Partial capture
07-26 21:36	40m	-13 / -	9A3TGY	- / -8	5	✓ Closing fragment
07-26 21:31	40m	-10 / -	Z62NS	- / -10	2	Partial capture
07-26 21:31	40m	-13 / -	SP9MOA	-14 / -7	4	✓ Closing observed
07-26 14:55	40m	- / -	SP9CXN	-14 / -	2	✓ Closing fragment
07-25 22:11	40m	-21 / -	LZ3CB	- / 0	6	Partial capture
07-25 22:08	40m	-18 / -6	US2UM	-3 / -1	5	✓ Full exchange observed
07-25 22:04	40m	-7 / -	PA7D	-13 / 0	4	✓ Closing observed
07-25 22:01	40m	-13 / -	EA4D	- / -13	4	Partial capture
07-25 21:51	40m	-11 / -14	R2EA	-6 / -	21	Partial capture
07-25 21:51	40m	-8 / -5	UN7LEW	-10 / -	2	✓ Closing observed
07-24 17:56	80m	-2 / -	SQ9AWN	+15 / -7	4	✓ Full exchange observed
07-23 21:20	80m	+8 / -9	9A4ZM	+16 / -12	7	✓ Full exchange observed
07-23 21:18	80m	+10 / -	ER5DX	- / -8	5	✓ Closing fragment
07-23 21:16	80m	+7 / -	SP1183JO	- / -9	4	Partial capture
07-23 21:06	40m	- / -3	LZ1ZF	-11 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
230745  -7  736  SP6ZLT F4MBU R-05 (x2)
232200 -13 1090  SP6ZLT M0DSK 73
232300  -6  994  SP6ZLT CR7BRV -07 (x2)
232600 -15 1093  SP6ZLT EB3JT JN01 (x3)
233915 -19 1091  SP6ZLT TA2EE 73
072015  -1 1092  SP5RZL SP6ZLT +00 (x2)
072100  -2 1035  SP6ZLT SP5RZL R-13
072115  +0 1092  SP5RZL SP6ZLT RR73
072130  -6 2171  SP6ZLT IK2RZQ JN45 (x2)

80m

UTC    dB Audio  Message
211100  -1 1998  SP6ZLT DO5OT R+06
181800  +1 1473  SN0GIP SP6ZLT -03
181815  +3 1473  SP6ZLT SN0GIP R+02
181830  +1 1473  SN0GIP SP6ZLT RR73
181845  +1 1473  SP6ZLT SN0GIP 73 (x2)
231345  -4 2502  SP6ZLT DO9BAU JO62 (x9)

20m

UTC    dB Audio  Message
165700  -9 1496  SP6ZLT HA1BF -19 (x4)
104315 -15 1692  SP6ZLT ON4AOI +18 (x2)
111015 +16  465  SP6ZLT IK4LZH RR73
141330  +0 1756  SP6ZLT IR7MGGC -20 (x3)
150200 -10 1479  SP6ZLT EA3AGF RR73
193600  -4 1508  SP6ZLT ON5LW RR73
073730 +13 2236  SP6ZLT IQ4JO -13 (x3)

10m

UTC    dB Audio  Message
085800  -9  377  SP6ZLT <...> R-08
090100 -22 1563  SP6ZLT EA5KB RR73
090230 -11 1439  SP6ZLT F5ADE R+11 (x2)
090415  -7 1696  SP6ZLT LZ2HN R+00 (x2)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee