SM1NFH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO97

Receiver-side FT8 activity involving SM1NFH, decoded by SO8OO in southeastern Poland. 102 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-29.

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 102 FT8 messages attributed to SM1NFH as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Several six-hour UTC windows tied for the largest share (67%), 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

102

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 102

First attributed message: 2026-06-07
Last attributed message: 2026-08-29 16:50 UTC

Observed FT8 message patterns

Attributed sample: 102 messages
Active dates: 4 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -16 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 50, strong (≥ -8 dB) 40.

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 SM1NFH in decoded directed-looking exchanges:

LX1DA · Luxembourg ×2 DL7UVO · Fed. Rep. of Germany DN9OPA · Fed. Rep. of Germany R3DMK · European Russia EU2AAI · Belarus RU3SD · European Russia UA3GDJ · European Russia UB4FGK · European Russia IC8FKB · Italy R6OD · European Russia F4GHN · France R2SBI · European Russia

Most frequent locator attributed to SM1NFH

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: JO97 · 60 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 861 km (approx.)
Last such locator decoded: 2026-08-29 16:46 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	SM1NFH S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-29 16:48	40m	-11 / -17	UA3WG	-2 / -13	3	Partial capture
08-29 16:45	40m	-7 / -	RA4NCC	- / -1	4	✓ Closing fragment
08-29 16:42	40m	-7 / +6	R1TET	-20 / +6	9	✓ Full exchange observed
08-29 16:41	40m	-11 / -	UA4NCX	-17 / -4	3	✓ Closing observed
08-29 16:32	40m	-11 / -	RA9SOZ	- / -3	3	✓ Closing fragment
08-29 16:29	40m	-13 / -11	R2EA/P	-6 / +8	5	✓ Full exchange observed
08-29 16:27	40m	-12 / -	RA9SOZ	- / -	4	Partial capture
08-29 16:06	40m	-12 / -	SP7OK	- / -	2	Partial capture
08-29 16:03	40m	-9 / -	RA9MAI	-22 / -5	2	✓ Closing observed
08-29 16:02	40m	-12 / -	SP5OSF	- / -	3	✓ Closing fragment
08-29 15:56	40m	-12 / -16	RA9CUU	-14 / -9	3	✓ Full exchange observed
08-29 15:52	40m	-9 / -	UA3IAG	-11 / +7	6	✓ Closing observed
08-29 15:49	40m	-11 / -	OE2CAL	- / -	6	Partial capture
08-29 15:44	40m	-16 / -11	UA3GDJ	+3 / -	5	✓ Closing observed
08-29 15:41	40m	-15 / -4	R2SN	-4 / -	3	✓ Closing observed
08-29 15:33	40m	-11 / -	OH7UE	- / -	3	✓ Closing fragment
08-29 15:29	40m	-13 / -	UR5WBO	- / -2	3	✓ Closing fragment
08-29 15:26	40m	-14 / -	BG0HP	- / -	3	Partial capture
08-29 15:18	40m	-16 / -6	UB4FGK	-14 / +3	4	✓ Full exchange observed
08-29 15:10	40m	-16 / -	EU2AAI	- / -	4	✓ Closing fragment
08-21 20:41	10m	- / -9	DN9OPA	+2 / -	2	✓ Closing fragment
08-15 19:03	40m	- / -2	AO25FDM	-10 / -	3	Partial capture
08-13 21:42	40m	-15 / -	F4HDR	- / -2	2	✓ Closing fragment
08-10 12:26	10m	- / -	F5ADE	-10 / -	3	✓ Closing fragment
08-07 09:41	10m	- / -21	LX1DA	0 / -	4	✓ Closing fragment
08-07 09:36	10m	- / -20	LX1DA	-4 / -	2	✓ Closing fragment
08-07 09:31	10m	- / -16	SV2AEL	-13 / -	3	✓ Closing fragment
08-07 09:26	10m	- / -13	SV2JAO	-8 / -	2	✓ Closing fragment
07-21 09:53	40m	- / -18	UY5BF	-18 / -	2	✓ Closing fragment
07-20 13:44	40m	- / -	SQ9BDB	-19 / -	3	✓ Closing fragment
07-19 21:18	10m	- / -11	IC8FKB	-8 / -	2	✓ Closing fragment
07-18 13:48	40m	- / -6	OZ9FF	-18 / -	2	✓ Closing fragment
07-13 21:44	20m	- / -15	9K2YM	-7 / -	3	✓ Closing fragment
07-06 15:52	10m	- / -10	IK2GAU	-16 / -	2	✓ Closing fragment
07-04 16:39	40m	- / -	DL7UMG	-1 / -	4	Partial capture
07-04 16:27	40m	-21 / -	8A1WWA	- / -	2	Partial capture
07-03 21:49	40m	- / +3	DL1BQR	-11 / -	2	Partial capture
07-03 21:46	40m	- / +3	DL7UVO	-12 / -	2	✓ Closing fragment
07-03 21:44	40m	- / -4	R2EN	-4 / -	2	✓ Closing fragment
06-18 10:03	10m	- / -25	R7NO	-1 / -	3	✓ Closing fragment
06-17 17:16	10m	- / +2	F5RAV	-16 / -	2	✓ Closing fragment
06-15 14:59	10m	- / -5	F4GHN	-3 / -	4	✓ Closing fragment
06-14 21:39	10m	- / -8	9A5TW	-4 / -	2	✓ Closing fragment
06-14 21:34	10m	- / -3	ZA5G	-1 / -	3	✓ Closing fragment
06-14 21:12	10m	- / +3	9A3QO	-12 / -	2	✓ Closing fragment
06-14 19:44	10m	- / -	UA4AGU	-15 / -	2	✓ Closing fragment
06-14 19:21	10m	- / -9	RU3SD	+2 / -	5	✓ Closing fragment
06-14 19:17	10m	- / -	RU3SD	+1 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
164330  -3  990  R1TET SM1NFH JO97
164345 -23 1450  SM1NFH R1TET +06
164400  -5  989  R1TET SM1NFH R+06
164415 -18 1450  SM1NFH R1TET +06
164430 -10  990  R1TET SM1NFH R+11
164445 -18 1450  SM1NFH R1TET RR73
164500 -10  990  R1TET SM1NFH 73
164530  -3  989  RA4NCC SM1NFH JO97 (x4)
164830  -3  989  SM1NFH UA3WG -17 (x2)
165045 -11  990  UA3WG SM1NFH R-13
165630 -10 1343  SM1NFH UN2NC RRR

10m

UTC    dB Audio  Message
093215  -9 1873  SM1NFH SV2AEL RR73
093430  +7 2017  SM1NFH F2JD -13
093645  -8  874  SM1NFH LX1DA -20 (x6)
163630  -4  831  SM1NFH IW2NEF -07
122600 -11 1403  SM1NFH F5ADE RRR (x3)
203030  -8 2303  SM1NFH G1OZO -07
204115  +0 2892  SM1NFH DN9OPA -09 (x2)

20m

UTC    dB Audio  Message
214400  -4 1941  SM1NFH 9K2YM -15 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee