SM5XGQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO89

Receiver-side FT8 activity involving SM5XGQ, decoded by SO8OO in southeastern Poland. 109 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-06-19 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 109 FT8 messages attributed to SM5XGQ as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (72%), followed by 80 m (24%) and 10 m (3%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -6 dB.

Overview

109

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 26 40m · 78 20m · 2 10m · 3

First attributed message: 2026-06-19
Last attributed message: 2026-09-18 15:54 UTC

Observed FT8 message patterns

Attributed sample: 109 messages
Active dates: 13 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -14 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 30, strong (≥ -8 dB) 73.

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 SM5XGQ in decoded directed-looking exchanges:

8S7DL · Sweden ×2 LW2EDM · Argentina SV2CLJ · Greece CS8ABF · Azores RI1FJL · Franz Josef Land BD7OH · China BH3IJF · China JH5LCN · Japan OH3OJ · Finland PD0LBY · Netherlands R1BDX · European Russia R9YCB · Asiatic Russia

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 SM5XGQ

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: JO89 · 45 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,106 km (approx.)
Last such locator decoded: 2026-09-18 15:54 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	SM5XGQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 15:52	80m	-11 / +8	OH4MDY	-8 / +9	6	✓ Full exchange observed
09-13 18:14	40m	+2 / -	RA3WY/P	- / -1	3	Partial capture
09-13 17:51	40m	+1 / 0	R1BDX	-2 / +7	4	✓ Full exchange observed
09-13 17:49	40m	+4 / -	JH5LCN	- / -20	3	✓ Closing fragment
09-13 17:11	40m	+1 / 0	RZ0SW	-18 / -13	6	✓ Full exchange observed
09-13 17:09	40m	+3 / -	RA9CUU	- / +1	3	✓ Closing fragment
09-13 17:07	40m	+2 / -	YB2TTM	- / -	2	Partial capture
09-13 17:01	40m	-2 / -	RA0AB	- / -	2	✓ Closing fragment
09-13 17:00	40m	+2 / -	OH3OJ	- / +6	2	✓ Closing fragment
09-09 18:10	80m	+3 / -	RA3PGR	- / -4	3	✓ Closing fragment
09-09 18:09	80m	-2 / -15	DL7TY	-5 / -3	5	✓ Full exchange observed
09-08 16:04	40m	-3 / -	BH3IJF	- / -11	3	✓ Closing fragment
09-07 19:15	40m	-10 / -15	RN3YN	-3 / -7	8	✓ Full exchange observed
09-07 19:13	40m	-12 / -13	RY4ABB	-11 / -4	4	✓ Full exchange observed
09-07 15:34	40m	-2 / -	BD7OH	- / -10	2	✓ Closing fragment
09-07 15:30	40m	-5 / -	VK3JMA	- / -19	5	✓ Closing fragment
09-07 15:16	40m	-10 / -	SM2OTU	- / -10	4	✓ Closing fragment
09-07 15:14	40m	-12 / -	R9OFA	- / -	2	Partial capture
09-07 15:12	40m	- / -14	F4FSY	-18 / -	2	Partial capture
09-07 15:11	40m	-15 / -	RA9YJU	- / +2	4	✓ Closing fragment
09-07 15:05	40m	-12 / -9	PD0LBY	-16 / -13	4	✓ Full exchange observed
09-07 15:04	40m	-13 / -	RT1I	- / +6	3	✓ Closing fragment
09-07 15:00	40m	-20 / -	R9OAK	- / -	2	Partial capture
09-06 16:59	40m	- / -2	R3ZBY	+6 / -	2	Partial capture
09-06 16:58	40m	- / -	US3EW	+3 / -	4	Partial capture
09-06 16:58	40m	-6 / -	R9YCB	- / -12	3	✓ Closing fragment
08-29 07:58	20m	-5 / -	RI1FJL	- / -	2	✓ Closing fragment
08-27 18:31	40m	+8 / -	JH2LMH	- / -	2	Partial capture
08-27 18:29	40m	+8 / -12	UK8OM	0 / -1	6	✓ Full exchange observed
08-27 17:52	40m	-4 / -	YC2YIZ	- / -2	5	✓ Closing fragment
08-21 18:28	80m	-5 / -	RA0SCA	- / -	2	Partial capture
08-21 18:25	80m	-5 / -	R9SAP	- / -	2	✓ Closing fragment
08-04 18:55	80m	-9 / -	G1SQB	- / -	2	Partial capture
08-04 18:51	80m	-8 / -11	RX6DA	+3 / +3	5	✓ Full exchange observed
08-04 18:49	80m	-9 / -10	8S7DL	-2 / 0	6	✓ Full exchange observed
08-04 18:48	80m	- / -	R2EC	0 / -	2	Partial capture
08-04 18:47	80m	-7 / -16	RW3QW	+7 / +6	5	✓ Full exchange observed
07-21 17:43	20m	- / -17	OE6TNO	+1 / -	4	Partial capture
06-30 18:34	20m	- / -14	CS8ABF	-5 / -	2	✓ Closing fragment
06-28 18:36	10m	- / -10	LW2EDM	-4 / -	3	✓ Closing fragment
06-26 16:53	40m	- / -	DL7ACA	-9 / -	2	Partial capture
06-25 19:08	10m	-15 / +8	CT7BQA	-14 / -	2	Partial capture
06-25 19:06	10m	-18 / -19	SV2CLJ	-2 / -18	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
180915  +3  775  DL7TY SM5XGQ JO89
180930  -4 1230  SM5XGQ DL7TY -15
180945  -3  774  DL7TY SM5XGQ R-03
181000  -6 1230  SM5XGQ DL7TY RRR
181015  -7  774  DL7TY SM5XGQ 73
181045  +2  774  RA3PGR SM5XGQ JO89 (x3)
181230  -1  774  R3MDJ SM5XGQ JO89
155245 -10  776  OH4MDY SM5XGQ JO89 (x3)
155430 -12  985  SM5XGQ OH4MDY +08
155445  -8  779  OH4MDY SM5XGQ R+09
155500  -4  985  SM5XGQ OH4MDY RR73

40m

UTC    dB Audio  Message
171200 -18 1376  SM5XGQ RZ0SW RR73
171215  +6  770  RZ0SW SM5XGQ R-13 (x2)
172045  +1  771  R9OOF SM5XGQ JO89 (x2)
174945  +5  769  JH5LCN SM5XGQ JO89 (x3)
175115  +1  768  R1BDX SM5XGQ +07
175130  -1  768  SM5XGQ R1BDX R+00
175145  +1  769  R1BDX SM5XGQ RR73
175200  -4  768  SM5XGQ R1BDX 73
181445  -3  768  RA3WY/P SM5XGQ JO89 (x3)

20m

UTC    dB Audio  Message
183430  -8 1119  SM5XGQ CS8ABF -14 (x2)
174300  -3  871  SM5XGQ OE6TNO JN77 (x4)
075815  -7  774  RI1FJL SM5XGQ R+12 (x2)

10m

UTC    dB Audio  Message
190630  -5  898  SM5XGQ SV2CLJ -19
190645 -18  946  SV2CLJ SM5XGQ R-18
190700  -2  898  SM5XGQ SV2CLJ RR73
190715 -17  944  SV2CLJ SM5XGQ R-18
190730  +0  898  SM5XGQ SV2CLJ RR73
190815 -15  939  CT7BQA SM5XGQ JO89
190830 -14  798  SM5XGQ CT7BQA +08
183615  -6  691  SM5XGQ LW2EDM -10 (x3)

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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