SM3IZB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JP93

Receiver-side FT8 activity involving SM3IZB, decoded by SO8OO in southeastern Poland. 72 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-07-13 and 2026-08-22.

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 72 FT8 messages attributed to SM3IZB as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (81%), followed by 20 m (18%) and 40 m (1%). Most decodes (88%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -4 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 58 40m · 1 20m · 13

First attributed message: 2026-07-13
Last attributed message: 2026-08-22 21:32 UTC

Observed FT8 message patterns

Attributed sample: 72 messages
Active dates: 12 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -13 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 52.

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 SM3IZB in decoded directed-looking exchanges:

IK4LZH · Italy ×3 Z62NS · Republic of Kosovo ×2 DL1NEO · Fed. Rep. of Germany DL3MIB · Fed. Rep. of Germany PG9S · Netherlands A61CK · United Arab Emirates DG5DR · Fed. Rep. of Germany DH2RL · Fed. Rep. of Germany DM3YBN · Fed. Rep. of Germany E70SZ · Bosnia-Herzegovina EA8UP · Canary Islands F5IXN · France

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 SM3IZB

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: JP93 · 27 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,517 km (approx.)
Last such locator decoded: 2026-08-22 21:29 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	SM3IZB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 21:29	80m	+5 / -1	DK1SF	+7 / -3	9	✓ Full exchange observed
08-22 21:28	40m	- / -	TA3NK	-8 / -	4	Partial capture
08-22 21:28	80m	- / -	F6BHK	-18 / -	2	Partial capture
08-21 21:16	80m	+4 / -	YP0GWT/R	- / -	3	Partial capture
08-21 21:14	80m	+6 / -	UA4FKT	+12 / +5	7	Partial capture
08-21 21:12	80m	-8 / -15	EI4JFB	-4 / -	3	✓ Closing observed
08-20 07:44	20m	- / -	DL1R	+12 / -	4	Partial capture
08-20 07:03	20m	- / -	PD0RWH	-4 / -	2	Partial capture
08-20 07:03	20m	- / -	S50RJ	-4 / -	3	Partial capture
08-19 19:40	20m	- / -2	EA8UP	+7 / -	8	✓ Closing fragment
08-19 19:31	20m	- / +1	OE8PIT	-15 / -	3	Partial capture
08-09 19:55	80m	+1 / -	IV3DSG	-9 / -	3	✓ Closing observed
08-09 19:50	80m	-2 / -1	SP5KG	+11 / +4	4	Partial capture
08-09 19:49	80m	+1 / -4	IV3DSG	-5 / -10	7	Partial capture
08-09 19:46	80m	0 / +1	OZ1LFI	-8 / -8	4	✓ Full exchange observed
08-09 19:44	40m	- / -	PD0IFI	0 / -	3	Partial capture
08-09 19:41	40m	- / -	PD0IFI	-2 / -	2	Partial capture
08-09 09:31	20m	- / -	OK2CNI	+4 / -	4	Partial capture
08-08 07:25	20m	- / -	UA3VVA	-19 / -	3	Partial capture
08-07 09:20	10m	- / -4	DH1GKS	-8 / -	4	Partial capture
08-07 09:17	10m	- / -	DH1GKS	-12 / -	2	Partial capture
08-05 20:50	20m	- / -	EA3HMM	+5 / -	3	Partial capture
08-05 20:40	80m	- / 0	DL5AX	-11 / -	4	✓ Closing fragment
08-05 20:36	80m	-7 / -	YT3PL	+6 / +1	2	Partial capture
08-05 20:36	80m	- / -	LA9GX	+8 / -	8	Partial capture
08-05 20:35	80m	- / +2	DB100FT	-5 / -	4	✓ Closing fragment
08-05 20:35	80m	- / -	DL5AX	-12 / -	3	Partial capture
08-05 20:35	80m	- / +9	DO3VE	+4 / -	4	Partial capture
08-05 20:32	80m	-6 / -	IK6GTF	-7 / -11	5	✓ Closing observed
08-05 20:27	80m	-9 / -1	SP7VCL	+10 / +4	8	Partial capture
08-05 20:27	80m	-6 / -	SV9MBH	- / -14	2	Partial capture
08-05 20:26	80m	- / -	DO9PV	-12 / -	3	Partial capture
08-05 20:24	80m	-6 / -	G4ZAM	- / -	2	Partial capture
08-05 20:21	80m	-7 / -3	Z62NS	+2 / +5	6	✓ Full exchange observed
08-05 20:18	80m	-2 / -	Z62NS	- / -	2	Partial capture
08-05 08:45	40m	- / -	US1MM	-12 / -	3	Partial capture
08-04 20:56	20m	- / -	EA8ACW	-17 / -	2	Partial capture
08-04 09:31	20m	- / -	PG1C	-11 / -	2	Partial capture
08-03 20:40	80m	- / -	DO9BAU	+13 / -	11	Partial capture
08-03 20:40	80m	-1 / -1	9A4ZM	+7 / +4	4	✓ Full exchange observed
08-03 20:38	80m	0 / -	DO9MKN	- / -1	2	Partial capture
08-03 20:37	80m	- / -	DL1UDO	-2 / -	3	Partial capture
08-03 20:37	80m	- / -	SV1EKI	-7 / -	5	Partial capture
08-03 20:22	40m	- / -10	DL1IP	-14 / -	5	Partial capture
08-03 09:08	20m	- / -13	M0PBG	-12 / -	3	Partial capture
08-03 09:07	20m	- / -	F4AGZ	-17 / -	2	Partial capture
08-03 09:01	20m	- / -	IZ1KJV	-15 / -	4	Partial capture
08-03 08:59	20m	- / -8	PD1JVE	-9 / -	2	✓ Closing fragment
08-03 08:41	20m	- / -7	IK4LZH	+2 / -	3	✓ Closing fragment
08-02 07:52	20m	- / -	DL1BGH	-13 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
212745  +3 2150  CQ SM3IZB JP93
212800 -20 2151  SM3IZB F6BHK JN24
212815  +2 2150  CQ SM3IZB JP93
212830 -15 2090  SM3IZB F6BHK JN24
212845  +6 2150  CQ SM3IZB JP93 (x2)
212930 +10 2149  SM3IZB DK1SF JO42 (x6)
213215  +4 2149  DK1SF SM3IZB -03
213230 +11 2148  SM3IZB DK1SF R-01
213245  +6 2150  DK1SF SM3IZB RR73

40m

UTC    dB Audio  Message
202330 -18 2226  SM3IZB DL1IP R-10 (x3)
084530 -14 1204  SM3IZB US1MM KO30 (x3)
194100  -2  422  SM3IZB PD0IFI JO32 (x5)
212800  -7 1193  SM3IZB TA3NK KM39 (x4)

20m

UTC    dB Audio  Message
194100  +9  363  SM3IZB EA8UP -02 (x6)
070345  -7 1080  SM3IZB S50RJ JN65
070345  -7 1314  SM3IZB PD0RWH JO23
070415  -1 1080  SM3IZB S50RJ JN65
070415  -2 1314  SM3IZB PD0RWH JO23
070445  -5 1080  SM3IZB S50RJ JN65
074400 +10 2659  SM3IZB DL1R JN58 (x4)

10m

UTC    dB Audio  Message
142745  +1 3041  SM3IZB DL6RS JN48 (x3)
104600  -6 1125  SM3IZB DL3MIB R-01 (x2)
105130 -13  771  SM3IZB PG9S R+00 (x2)
105445 -17 1802  SM3IZB DH1NGL -04
091715 -18 1050  SM3IZB DH1GKS JN38
091745 -18 1646  SM3IZB DN9OPA JN38
091745  -5 1049  SM3IZB DH1GKS JN38 (x5)

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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