SM7TZK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Locator transmitted in a decoded message: JO75

Receiver-side FT8 activity involving SM7TZK, decoded by SO8OO in southeastern Poland. 250 related FT8 messages, 115 CQ messages, observed on 80m, 40m, 20m, 10m, across 21 UTC dates. Heard between 2026-05-25 and 2026-08-23.

These are automated observations at the SO8OO receiver, not the station's official logbook. Times are UTC. Decoder S/N describes messages received at SO8OO; inferred entity and location data may be inaccurate for portable, remote or special-event operation.

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Overview

250

Related messages

115

CQ messages

UTC dates heard

-9 dB

Mean decoder S/N

Bands

80m 20m 40m 10m

First seen: 2026-05-25
Last seen: 2026-08-23 02:05 UTC

Frequent QSO partners observed at SO8OO

Stations SM7TZK worked most often, as logged from our receiver:

OE5DML · Austria ×2 7Z1BQ · Saudi Arabia OZ/DG5BEA · Denmark DO1ANB · Fed. Rep. of Germany 9A60CBM · Croatia DL5DSM · Fed. Rep. of Germany TM8WWA · France SQ3JVA · Poland SP0YAGI · Poland DO5PY · Fed. Rep. of Germany SN4WWA · Poland DK5OPA · Fed. Rep. of Germany

Activity Heatmap

Locator transmitted by SM7TZK

Approximate centre of JO75, decoded 2026-08-20 20:42 UTC. A transmitted locator is not proof of the operator's permanent location.

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	SM7TZK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-21 04:25	80m	-8 / -	OZ/DG5BEA	- / -10	2	✓ Closing fragment
08-20 20:45	80m	+6 / 0	SP0YAGI	+3 / -9	4	✓ Full exchange observed
08-20 05:25	80m	- / -	OE3FVU	-15 / -	3	Partial capture
08-20 05:21	80m	- / -	SQ8AA	+17 / -	3	Partial capture
08-20 05:17	80m	-10 / -16	SP7FFY	+15 / -	5	✓ Closing observed
08-20 04:57	80m	- / -	PA5MB	-16 / -	2	Partial capture
08-20 04:52	80m	-12 / -11	DK5OPA	-11 / -9	12	✓ Full exchange observed
08-20 04:41	80m	-16 / -5	DO3JP	-14 / -7	6	✓ Full exchange observed
08-20 04:37	80m	- / -	SQ3POU	-16 / -	2	Partial capture
08-20 04:36	80m	-14 / -13	DL3RSK	-15 / -	5	✓ Closing observed
08-20 04:34	80m	-18 / -12	SQ4PKO	+5 / -9	5	✓ Full exchange observed
08-20 04:33	80m	-24 / -13	DL3RSK	-17 / -15	4	Partial capture
08-20 04:29	80m	-13 / -9	DO5PY	-9 / -13	8	✓ Full exchange observed
08-20 04:23	80m	-10 / -	DO1ANB	- / -14	3	✓ Closing fragment
08-20 04:18	80m	-4 / -	IK2LHP	- / -9	2	✓ Closing fragment
08-20 04:09	80m	-7 / -	DO3MY	- / -14	3	✓ Closing fragment
08-20 04:05	80m	- / -	CT2HEX	-8 / -	2	Partial capture
08-20 04:00	80m	-6 / -2	SP5KG	+10 / -6	6	✓ Full exchange observed
08-20 03:58	80m	-6 / +7	DL5DSM	+13 / +6	6	✓ Full exchange observed
08-20 03:54	80m	0 / -15	CT2HEX	-6 / -20	8	✓ Full exchange observed
08-20 03:52	80m	-12 / -13	SQ9EJ	-8 / -	7	✓ Closing observed
08-20 03:47	80m	-16 / -	CT2GQA	-21 / -19	5	✓ Closing observed
08-20 03:40	80m	-18 / +8	SQ3JVA	-11 / -13	6	✓ Full exchange observed
08-20 03:38	80m	-6 / +4	SP3HGD	-9 / -	4	✓ Closing observed
08-20 03:34	80m	-15 / -4	DL9KM	-20 / -20	6	✓ Full exchange observed
08-20 03:29	80m	- / -	CT2HEX	-16 / -	3	Partial capture
08-20 03:27	80m	-10 / -2	IQ4JO	-9 / -1	5	✓ Full exchange observed
08-20 03:23	80m	-3 / -8	EA3AKY	-2 / -17	6	✓ Full exchange observed
08-20 03:20	80m	-12 / -	IQ4JO	-6 / -	4	Partial capture
08-20 03:18	80m	-10 / -4	OE5DML	-2 / 0	5	✓ Full exchange observed
08-20 03:18	80m	-22 / -	F5BRF	- / -15	2	✓ Closing fragment
08-20 03:16	80m	- / -19	E75FM	-2 / -	2	✓ Closing fragment
08-19 04:17	80m	-1 / -13	9A60CBM	+1 / -	2	✓ Closing observed
08-14 04:09	80m	-5 / -	9A4BP/P	- / -	28	Partial capture
08-14 04:01	80m	-14 / -	9A4BP/P	- / -	6	Partial capture
08-09 06:51	20m	-18 / -	M7APV	- / -18	3	Partial capture
08-03 06:06	20m	- / -10	TK5KP	-19 / -	2	✓ Closing fragment
07-29 03:01	20m	- / -	NE5TX	-13 / -	3	Partial capture
07-05 05:04	80m	- / -4	SN4WWA	-8 / -	2	✓ Closing fragment
07-03 16:17	10m	- / -16	EA8CVR	-19 / -	2	Partial capture
07-03 07:47	20m	- / -11	TM8WWA	+3 / -	3	✓ Closing fragment
06-20 05:29	20m	- / -	TM1RVE	+6 / -	2	✓ Closing fragment
06-19 18:48	20m	- / -12	BH4ECL	-16 / -	3	Partial capture
06-19 17:51	20m	- / -19	BG2FFJ	0 / -	2	✓ Closing fragment
06-17 03:55	20m	- / -12	4L8A	+6 / -	3	✓ Closing fragment
06-16 07:54	20m	- / -13	ZA5G	+6 / -	2	✓ Closing fragment
06-15 14:42	20m	+4 / -	JN1ILK	- / -	2	Partial capture
06-15 14:39	20m	-6 / -	TM1RVE	- / -	2	Partial capture
06-15 14:37	20m	-9 / -	M7JVT	- / -6	3	Partial capture
06-15 05:43	20m	- / -14	EA3GIW	+8 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
195130  -9 2470  TF4WD SM7TZK JO75
053600 -15  906  SM7TZK TI5RR RR73
203145 -23 1884  <...> SM7TZK 73
205130 -15 2473  SM7TZK EI9KF +17
025845 -24 1585  SM7TZK 7Z1BQ RR73
030115 -14 1214  SM7TZK NE5TX EL29 (x3)
060630 -14 1376  SM7TZK TK5KP -10 (x2)
065100 -15 2091  M7APV SM7TZK R-18 (x3)
200445 -11 2543  OK2CNI SM7TZK 73
040545  -5  576  SM7TZK UT7UJ RR73

80m

UTC    dB Audio  Message
052545 -16 1638  SM7TZK OE3FVU JN78 (x2)
052700  -6  500  CQ SM7TZK JO75 (x6)
204215  +8 1001  SQ7HJX SM7TZK JO75
204530  +7  999  SP0YAGI SM7TZK
204545  +3 1000  SM7TZK SP0YAGI +00
204600  +6 1000  SP0YAGI SM7TZK R-09 (x2)
042545  -8 1242  OZ/DG5BEA SM7TZK R-10 (x2)

10m

UTC    dB Audio  Message
111330  -5 1447  OE8DSK SM7TZK JO75
073200  -9 2083  SM7TZK IU3GKQ -06 (x2)
075630  -5 2142  SM7TZK EU6AQ -13
084100 -20  290  <...> SM7TZK (x7)
083445  +7 2793  SM7TZK TM2WWA -04
161700 -20 2092  SM7TZK EA8CVR -16 (x2)

40m

UTC    dB Audio  Message
190600  -6 1767  SM7TZK R2FAQ -05 (x2)
190645 -15 1768  R2FAQ SM7TZK 73
061945 -11 1245  SM7TZK F4LVF -03 (x5)

Decoder S/N history by band

Daily averages across messages associated with this profile as decoded at SO8OO.