SM7XQW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO76

Receiver-side FT8 activity involving SM7XQW, decoded by SO8OO in southeastern Poland. 132 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 19 UTC dates in the available aggregate history. Observed between 2026-06-10 and 2026-09-18.

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 132 FT8 messages attributed to SM7XQW as the transmitting token by decoded message structure across 19 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (40%), followed by 20 m (33%) and 10 m (16%). Several six-hour UTC windows tied for the largest share (61%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

132

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 53 60m · 11 40m · 4 20m · 43 10m · 21

First attributed message: 2026-06-10
Last attributed message: 2026-09-18 19:22 UTC

Observed FT8 message patterns

Attributed sample: 132 messages
Active dates: 19 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 55, strong (≥ -8 dB) 56.

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 SM7XQW in decoded directed-looking exchanges:

HB9MZI · Switzerland PD1HPB · Netherlands CT1END/P · Portugal DB1EF · Fed. Rep. of Germany G4BWQ/P · England JA7BXS · Japan M0OVG · England M1DDD/P · England PA3GHJ · Netherlands RN6MA · European Russia S56MLZ · Slovenia SP6AXW · Poland

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 SM7XQW

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: JO76 · 62 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 858 km (approx.)
Last such locator decoded: 2026-09-18 19:22 UTC

Other locator fields attributed to this token: JO78 (30).

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	SM7XQW S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 19:16	80m	- / -14	DD8BA	-10 / -	3	✓ Closing fragment
09-18 18:57	80m	- / -	DO2XB	+12 / -	2	Partial capture
09-18 18:56	80m	-9 / -6	YL2IV	+8 / -	5	✓ Closing observed
09-18 18:55	80m	-14 / -10	SP9WAZ	+17 / -	4	✓ Closing observed
09-18 18:53	80m	- / -8	OZ2LC	-5 / -	3	✓ Closing fragment
09-18 18:53	80m	- / -	DO2ANW	-1 / -	9	Partial capture
09-18 18:40	80m	-12 / -20	SQ8GBG	+16 / +6	7	✓ Full exchange observed
09-18 18:39	80m	- / -18	RA2FU	-3 / -	3	Partial capture
09-06 16:42	40m	-17 / -	G4NKV/P	-15 / -7	3	✓ Closing observed
09-04 09:55	40m	- / -18	DC2SF/P	-19 / -	3	✓ Closing fragment
09-04 06:01	40m	- / +5	DK5UR	+6 / -	2	✓ Closing fragment
08-30 07:23	20m	- / -8	4O4DB	-11 / -	3	Partial capture
08-30 05:15	80m	-13 / -	AB2E	- / -	9	Partial capture
08-30 05:13	80m	-10 / -	VP2MAA	- / -	2	Partial capture
08-30 05:09	80m	-13 / -	AB2E	- / -	2	Partial capture
08-30 05:03	80m	-21 / -7	SM7TZK	-21 / -	3	✓ Closing observed
08-14 04:14	80m	0 / -	GB8VJ	- / +3	2	✓ Closing fragment
08-14 04:07	80m	-6 / -	9A4BP/P	- / -	3	Partial capture
08-12 13:44	20m	-14 / +2	SQ9M	-7 / -5	3	Partial capture
08-12 04:41	40m	- / -	US2YW	+3 / -	3	Partial capture
08-10 20:28	80m	-16 / -	SA3SWE	- / -	2	Partial capture
08-07 19:53	20m	-8 / -	PD0WC	- / -	3	Partial capture
08-05 04:56	20m	- / -10	V31DL	-13 / -	4	Partial capture
08-05 04:52	20m	- / +2	RN6MA	-17 / -	2	✓ Closing fragment
08-05 04:34	20m	- / -7	A71UN	-14 / -	2	Partial capture
08-05 04:04	60m	-4 / -	9A60CBM	- / -	7	Partial capture
07-25 19:37	60m	- / -	F5RAV	-6 / -	2	Partial capture
07-25 19:37	60m	- / -	9A4ZM	+2 / -	2	Partial capture
07-25 19:33	60m	- / -	ON7GB	-8 / -	6	Partial capture
07-25 19:32	60m	-18 / -20	DK1TBL	-15 / -14	9	✓ Full exchange observed
07-19 22:20	20m	- / -6	S56MLZ	-6 / -	2	✓ Closing fragment
07-19 22:08	20m	- / -7	M0OVG	-12 / -	2	✓ Closing fragment
07-19 19:42	20m	-14 / -	TA1SW	- / -	10	Partial capture
07-19 19:37	20m	-3 / -	PD0WC	- / -	6	Partial capture
07-19 14:34	20m	-15 / -	2W0LJX	- / -	3	Partial capture
07-19 14:15	20m	-16 / -	G4BWQ/P	- / -14	2	✓ Closing fragment
07-19 10:24	20m	- / -3	UT7UJ	+3 / -	5	Partial capture
07-19 09:31	20m	-20 / -	PE1NLK	- / -8	2	Partial capture
07-18 19:48	40m	- / -	PE1NPS	-9 / -	3	Partial capture
07-18 19:40	40m	- / -	PE1NPS	-12 / -	3	Partial capture
07-16 10:15	20m	- / -5	YT2TOR	-22 / -	2	Partial capture
07-06 20:17	20m	-12 / -	JA7BXS	- / -8	2	✓ Closing fragment
07-06 20:16	20m	- / -	UR7EU	-10 / -	2	Partial capture
07-06 19:28	20m	- / -	EA8ACW	-8 / -	3	Partial capture
07-06 19:24	20m	- / -7	PD9OH	-13 / -	2	Partial capture
06-28 18:26	20m	-8 / -	M7MIV	- / -	2	Partial capture
06-28 17:22	10m	-8 / -11	HB9MZI	-11 / +9	3	✓ Full exchange observed
06-28 17:21	10m	- / -	RL3K	+5 / -	6	Partial capture
06-26 16:37	10m	+1 / -	DO6LE	- / -	3	Partial capture
06-26 16:34	10m	-10 / -	DO6LE	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
185645  +2 2737  SM7XQW DO2ANW JN57
185715 +10  752  SM7XQW YL2IV KO06
185715 +12  335  SM7XQW DO2XB JO71
185715  -3 2737  SM7XQW DO2ANW JN57
185745  +8  752  SM7XQW YL2IV R-06
185745 +13  335  SM7XQW DO2XB JO71
185800  -9  751  YL2IV SM7XQW RR73
185815  +3  753  SM7XQW YL2IV 73
191615  -7 1215  SM7XQW DD8BA JO42 (x3)
192130  -9  751  CQ SM7XQW JO76 (x2)
192230 -13  751  SN40KZE SM7XQW -05
192245  -1 1155  SM7XQW DB100FT R-09

40m

UTC    dB Audio  Message
173100 -11 1586  SM7XQW RR73; OE3KLU <...> +16
044100  +3  936  SM7XQW US2YW KN28 (x3)
044245 -22 1733  PV8AJ SM7XQW JO76
203230 -17 1859  SM7XQW <...> -18
060100  +3  492  SM7XQW DK5UR +05 (x2)
095500 -17 1721  SM7XQW DC2SF/P -18 (x3)
164200 -19 1361  G4NKV/P SM7XQW R-07 (x2)
164315 -15 1262  SM7XQW G4NKV/P RR73
164400 -15 1101  ON3CL SM7XQW JO76

20m

UTC    dB Audio  Message
195345  -9  521  PD0WC SM7XQW JO76 (x3)
134115 -10  671  SM7XQW IZ7QDZ -14
134400 -15  674  F5NIB SM7XQW -10
162645 -18 1007  SM7XQW M1DDD/P RR73
134445 -14 1281  SQ9M SM7XQW JO76
134500  -7 1280  SM7XQW SQ9M +02
134515 -13 1281  SQ9M SM7XQW R-05
134530 -14 1280  SM7XQW RR73; DL2EMU <...> +00
184645 -20 1482  SM7XQW CT1END/P RR73 (x2)
072345 -10 1470  SM7XQW 4O4DB JN92 (x3)

60m

UTC    dB Audio  Message
193630 -15 1465  SM7XQW DK1TBL RR73
193645 -14 1465  DK1TBL SM7XQW 73
193700 -10 1560  SM7XQW ON7GB JO21
193700  +3 1460  SM7XQW 9A4ZM JN86
193730  -6 1560  SM7XQW ON7GB JO21
193730  -7 1084  SM7XQW F5RAV JN09
193730  +1 1460  SM7XQW 9A4ZM JN86
193830  -6 1084  SM7XQW F5RAV JN09
040445  -8  714  9A60CBM SM7XQW JO76 (x7)

10m

UTC    dB Audio  Message
163400 -11  654  DO6LE SM7XQW JO78 (x5)
172100 -13  637  PD1HPB SM7XQW RR73
172115  +4  638  SM7XQW RL3K KO91 (x2)
172200  -8  635  HB9MZI SM7XQW +09
172215 -11  634  SM7XQW HB9MZI R-11
172230  -9  637  HB9MZI SM7XQW RR73
172315  +5  636  SM7XQW RL3K KO91 (x4)

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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