LZ1ST — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Bulgaria Most frequent locator attributed to this token: KN21

Receiver-side FT8 activity involving LZ1ST, decoded by SO8OO in southeastern Poland. 755 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 57 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-19.

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 755 FT8 messages attributed to LZ1ST as the transmitting token by decoded message structure across 57 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (48%), followed by 20 m (22%) and 80 m (12%). Most decodes (69%) fell within the six-hour window 01:00-07:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -6.1 dB.

Overview

755

Messages attributed

UTC dates decoded

155

Active 15-min windows

-6.1 dB

Estimated median S/N

Bands

160m · 69 80m · 90 60m · 59 40m · 362 20m · 167 10m · 8

First attributed message: 2026-06-07
Last attributed message: 2026-09-19 17:45 UTC

Observed FT8 message patterns

Attributed sample: 755 messages
Active dates: 57 UTC dates
Estimated median S/N: -6.1 dB
Estimated 10th-90th percentile: -18 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 117, moderate (-15 to -9 dB) 196, strong (≥ -8 dB) 442.

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 LZ1ST in decoded directed-looking exchanges:

DK5WL · Fed. Rep. of Germany ×2 F5RQQ · France ×2 II3WWA · Italy ×2 TM2WWA · France ×2 CR7BRV · Portugal IW4BYK · Italy UN7NU · Kazakhstan 9A4AA · Croatia DB3OI · Fed. Rep. of Germany F1PBZ · France IT9KQV · Sicily LY3BRA · Lithuania

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 LZ1ST

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: KN21 · 455 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 970 km (approx.)
Last such locator decoded: 2026-09-19 17:45 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	LZ1ST S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 17:40	80m	+9 / -	ZL2BX	- / -	6	Partial capture
09-18 17:32	80m	0 / -	ZL2NU	- / -	9	Partial capture
09-18 17:23	80m	0 / -	ZL2NU	- / -	4	Partial capture
09-17 03:27	160m	-4 / -18	PA0O	+13 / -2	9	Partial capture
09-16 03:42	160m	-4 / -	IV3WMS	- / -	3	Partial capture
09-16 03:39	80m	+8 / -	KB3HGW	- / -19	2	Partial capture
09-16 03:37	80m	+7 / -11	VP2MAA	-10 / -9	5	✓ Full exchange observed
09-16 03:35	80m	0 / -15	R7AG	-8 / 0	6	✓ Full exchange observed
09-14 17:17	80m	-9 / -16	ZS6BUN	-18 / -15	12	✓ Full exchange observed
09-12 04:51	40m	- / +8	LZ2INP	+2 / -	4	✓ Closing fragment
09-12 04:50	40m	-4 / -	J38LD	- / -8	3	✓ Closing fragment
09-12 04:48	40m	-8 / -	R3DIK/M	- / +10	2	Partial capture
09-12 04:44	40m	-10 / -	J38LD	- / -	2	Partial capture
09-12 04:41	40m	-9 / -	J38LD	- / -	3	Partial capture
09-10 04:12	60m	+15 / -11	VE3EY	-9 / -2	4	✓ Full exchange observed
09-10 03:53	60m	+1 / -	6Y5HN	- / -3	4	✓ Closing fragment
09-10 03:12	60m	- / -9	F5OYA/P	-20 / -	3	✓ Closing fragment
09-09 18:14	60m	+4 / -1	SP9ATE	+11 / +3	6	✓ Full exchange observed
09-09 18:11	60m	+1 / +2	TA4RC	-18 / +3	5	✓ Full exchange observed
09-08 03:34	160m	-6 / -	OD5XX	- / -	2	Partial capture
09-08 03:33	160m	-9 / -	IT9KQV	- / -2	3	✓ Closing fragment
09-08 03:30	160m	-4 / -8	OZ1BLP	-10 / -14	5	✓ Full exchange observed
09-08 03:17	160m	-3 / -7	DB3OI	-2 / -6	5	✓ Full exchange observed
09-08 03:15	160m	-1 / -6	LY3BRA	+10 / +5	5	✓ Full exchange observed
09-08 02:02	160m	+6 / -13	PI4DX	+15 / +6	4	✓ Full exchange observed
09-08 01:56	160m	+3 / -4	F1PBZ	+3 / -5	4	✓ Full exchange observed
09-08 01:47	160m	-9 / -	IW9FRA	- / -	4	Partial capture
09-07 13:33	10m	- / -8	CR7BRV	+10 / -	2	✓ Closing fragment
09-07 05:49	40m	-4 / -	J38DX	- / -17	4	✓ Closing fragment
09-07 05:31	40m	-1 / -	J38DX	- / -	2	Partial capture
09-07 03:16	60m	0 / -3	F5BRF	-12 / -2	4	✓ Full exchange observed
09-07 03:06	60m	+1 / -	WD4SRC	- / -19	4	✓ Closing fragment
09-07 03:03	60m	+2 / -	VE3FF	- / -15	2	✓ Closing fragment
09-07 03:00	60m	+2 / -	AM42SDC	- / -15	8	Partial capture
09-07 02:44	160m	+7 / -	UB3PAQ	- / -16	3	Partial capture
09-07 02:40	160m	+2 / -	RD1A	- / -	2	Partial capture
09-03 18:11	40m	-4 / -	II7MGXX	- / +1	2	Partial capture
09-03 03:42	40m	-6 / -	<...>	- / -2	4	Partial capture
09-03 03:36	40m	+6 / -	<...>	- / -15	4	Partial capture
09-03 03:36	40m	-5 / -8	IR7MGGC	-5 / -	4	Partial capture
09-03 03:33	40m	-2 / -9	II7MGBT	+4 / -7	5	Partial capture
09-03 03:32	40m	-8 / -	<...>	- / -	2	Partial capture
09-03 03:30	80m	-4 / +3	II7MGBA	+8 / +7	3	Partial capture
09-02 08:51	40m	-16 / -	<...>	- / -5	3	Partial capture
09-02 04:33	40m	-3 / -	LZ936BA	- / -	2	Partial capture
09-02 03:49	40m	0 / -	PY7FJ	- / -14	3	✓ Closing fragment
09-02 03:46	40m	-1 / -11	II7MGBT	0 / -14	4	Partial capture
09-02 03:45	40m	+2 / -	<...>	- / -	2	Partial capture
09-02 03:42	40m	+1 / -	UT5MB	- / -6	2	Partial capture
09-02 03:40	40m	0 / -7	EC3A	-6 / -4	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
173200  +0 1795  ZL2NU LZ1ST KN21 (x9)
174000 +11 1332  ZL2BX LZ1ST KN21 (x6)

160m

UTC    dB Audio  Message
033415  -5 1902  IT9KQV LZ1ST 73
033445  -7 1902  OD5XX LZ1ST KN21 (x2)
034245  -3 1048  IV3WMS LZ1ST KN21 (x3)
032730  +0 2270  PA0O LZ1ST KN21 (x2)
032815 +12  622  LZ1ST PA0O -18
032830  -5 2270  PA0O LZ1ST R-02
032845 +14  622  LZ1ST PA0O -18
032900  -3 2270  PA0O LZ1ST R-02
032915 +13  622  LZ1ST PA0O -18
032930  -4 2270  PA0O LZ1ST R-05 (x2)

40m

UTC    dB Audio  Message
044430  -9 2155  J38LD LZ1ST KN21 (x3)
044800  -6 2306  R3DIK/M LZ1ST KN21
044815  -9 1243  LZ1ST II7IAME +02
044830  -9 2305  R3DIK/M LZ1ST R+10
045000  -8 2497  J38LD LZ1ST KN21 (x3)
045115  +1  682  LZ1ST LZ2INP KN34 (x4)
154330 -14 1150  LZ1ST II8IHBC -03
180500  +0 2251  R5QO/QRP LZ1ST R-06

60m

UTC    dB Audio  Message
181500  +7 2142  SP9ATE LZ1ST R+03
181515 +11 2531  LZ1ST SP9ATE RR73
181530  +2 2142  SP9ATE LZ1ST 73
031215 -21 2135  LZ1ST F5OYA/P JN13 (x3)
031415 -21 2196  LZ1ST N8OQ 73
035300  +3 1966  6Y5HN LZ1ST KN21 (x4)
041215 +14 2979  VE3EY LZ1ST KN21
041300  -9 2571  LZ1ST VE3EY -11
041315 +15 2979  VE3EY LZ1ST R-02 (x2)

10m

UTC    dB Audio  Message
154100  -5 1784  LZ1ST IU4QRO JN54
082930 -16 1984  UA9LAO LZ1ST KN21 (x3)
083645 -20 2029  UN7NU LZ1ST KN21 (x2)
100330 -13 1798  IW4BYK LZ1ST 73
133300 +14  608  LZ1ST CR7BRV -08 (x2)

20m

UTC    dB Audio  Message
084830 -15 2013  LZ1ST IR7MGGC +20
123330 -16 1869  LZ1ST II7MGMU +02
064445 -15 2159  XE1TZP LZ1ST KN21 (x2)
065630  -2  256  LZ1ST R6LKG LN07
044730 -13 2104  II7MGBT LZ1ST KN21
050030  -3 2893  LZ1ST RW0SR OO22 (x4)
050515 -12 1211  LZ1ST II7MGLE +06
050645 -17 2103  LZ1ST II7MGBT -12 (x2)
035415  +7  465  LZ1ST <...> -12
122130 -13 2102  LZ1ST II7MGBT -18

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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