SM5UNR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO88

Receiver-side FT8 activity involving SM5UNR, decoded by SO8OO in southeastern Poland. 384 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 30 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-09-21.

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 384 FT8 messages attributed to SM5UNR as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (49%), followed by 60 m (34%) and 40 m (12%). Most decodes (53%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.9 dB.

Overview

384

Messages attributed

UTC dates decoded

Active 15-min windows

-10.9 dB

Estimated median S/N

Bands

80m · 20 60m · 130 40m · 45 20m · 189

First attributed message: 2026-07-07
Last attributed message: 2026-09-21 16:36 UTC

Observed FT8 message patterns

Attributed sample: 384 messages
Active dates: 30 UTC dates
Estimated median S/N: -10.9 dB
Estimated 10th-90th percentile: -21 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 100, moderate (-15 to -9 dB) 130, strong (≥ -8 dB) 154.

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 SM5UNR in decoded directed-looking exchanges:

F1PBZ · France ×2 EA1IOK · Spain ×2 9A4ZM · Croatia ×2 DK7ZT · Fed. Rep. of Germany ×2 EU4U · Belarus ×2 HA7TM · Hungary ×2 PA7ZZ · Netherlands ×2 PD1ADA · Netherlands 4X1UF · Israel 7Z1BM · Saudi Arabia 9A3AUH · Croatia 9A6NCC · Croatia

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 SM5UNR

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: JO88 · 166 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,001 km (approx.)
Last such locator decoded: 2026-09-21 16:35 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	SM5UNR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 16:36	40m	-12 / -	PA7ZZ	-3 / -	2	✓ Closing observed
09-21 16:32	40m	-14 / -12	HA7TM	+12 / +3	6	✓ Full exchange observed
09-21 16:32	40m	- / -	OE8PIT	+6 / -	4	Partial capture
09-21 16:27	60m	-12 / +2	DL4YDR	-13 / -8	5	✓ Full exchange observed
09-19 20:21	40m	-12 / -	F4NFM	-12 / -16	4	Partial capture
09-19 20:21	40m	- / -	IZ5MMT	+8 / -	2	Partial capture
09-19 20:20	40m	+2 / -5	RW3ZC	+5 / -9	4	✓ Full exchange observed
09-19 20:19	40m	- / -	LA2GCA	-8 / -	2	Partial capture
09-19 20:18	40m	-8 / -13	9A1CCB	+14 / -1	5	✓ Full exchange observed
09-19 20:17	40m	-6 / -	SP6RW	- / -11	2	✓ Closing fragment
09-19 20:14	40m	- / -1	DH2YBG	+2 / -	3	✓ Closing fragment
09-19 20:02	60m	- / +9	DK7ZT	-12 / -	3	Partial capture
09-19 19:59	60m	-1 / -6	SP4MPF	-15 / -13	10	✓ Full exchange observed
09-19 19:58	60m	+6 / +4	DG7AK	-9 / -6	7	✓ Full exchange observed
09-19 19:57	60m	- / -	OE9GWV	-9 / -	4	Partial capture
09-19 19:56	60m	+2 / -	ON7GB	+4 / -	5	✓ Closing observed
09-19 19:54	60m	0 / +9	OK1BN	+12 / +10	8	✓ Full exchange observed
09-19 19:53	60m	0 / -	TM60LOUV	- / -17	3	✓ Closing fragment
09-19 19:51	60m	+4 / -	DD6WF	+10 / +2	5	✓ Full exchange observed
09-19 19:51	60m	- / -	OE9GWV	-8 / -	2	Partial capture
09-19 19:48	60m	- / -	ON7GB	+7 / -	9	Partial capture
09-19 19:47	60m	- / -	EB3JT	-7 / -	6	Partial capture
09-19 19:47	60m	- / -	SQ2BXI	-6 / -	3	Partial capture
09-19 19:46	60m	+2 / -14	EA9UV	-10 / -14	5	✓ Full exchange observed
09-14 22:11	60m	- / -	HF5A	0 / -	4	Partial capture
09-14 22:11	60m	-11 / -16	LZ2VQ	+6 / -17	6	✓ Full exchange observed
09-14 22:08	60m	- / -	SP5MIG	-15 / -	3	Partial capture
09-14 22:06	60m	- / -	HF5A	-5 / -	4	Partial capture
09-14 22:06	60m	-8 / -6	LZ1GC	+17 / -9	6	✓ Full exchange observed
09-14 22:06	60m	-12 / -	OE5WRO	-20 / -2	9	Partial capture
09-14 22:05	60m	-7 / -5	EA1IOK	-6 / -4	5	✓ Full exchange observed
09-14 22:02	60m	-11 / -	VE1YX	-18 / +10	6	✓ Closing observed
09-14 17:28	60m	-4 / -4	PA7ZZ	-18 / +9	4	✓ Full exchange observed
09-14 17:28	60m	-7 / -11	G7GXK	-10 / +4	6	✓ Full exchange observed
09-14 17:27	60m	-6 / -1	LY3W	-2 / -	5	✓ Full exchange observed
09-14 17:25	60m	- / -	OE5DML	-7 / -	2	Partial capture
09-14 17:24	60m	-6 / -8	9A4ZM	-5 / +6	6	✓ Full exchange observed
09-14 17:23	60m	-7 / -2	SP8DK	+18 / -2	4	✓ Full exchange observed
09-14 17:08	40m	- / -	PD2MAC/P	-12 / -	7	Partial capture
09-14 17:04	40m	- / -	PD2MAC/P	-11 / -	2	Partial capture
09-14 16:58	40m	- / -	U1BD	-15 / -	3	Partial capture
09-14 16:57	40m	- / -4	ON1DGN	-12 / -	3	Partial capture
09-14 16:56	40m	- / -	DF5DY	+1 / -	4	Partial capture
09-14 16:56	40m	- / -	UX5UW	+2 / -	6	Partial capture
09-14 16:49	40m	- / -	RA6OY	+7 / -	5	Partial capture
09-14 16:49	40m	-19 / -	F3CJ	- / -17	2	Partial capture
09-12 07:17	40m	- / -	F4BYA	0 / -	3	Partial capture
09-12 07:14	40m	- / -7	DA1ST	-4 / -	6	✓ Closing fragment
09-12 07:10	40m	- / -	G0LPI	-20 / -	2	Partial capture
09-12 07:09	40m	-24 / -5	DL8WEM	-8 / +2	5	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
163230  +5  341  SM5UNR OE8PIT JN66
163230 +12 1137  SM5UNR HA7TM JN97
163245 -16 1135  HA7TM SM5UNR +03
163300  +3  340  SM5UNR OE8PIT JN66
163300 +10 1135  SM5UNR HA7TM R-12
163315 -11 1136  HA7TM SM5UNR RRR
163330 +11  341  SM5UNR OE8PIT JN66
163330 +12 1135  SM5UNR HA7TM 73
163400  +4  341  SM5UNR OE8PIT JN66
163400 +14 1135  SM5UNR HA7TM 73
163445 -17 1137  CQ SM5UNR JO88 (x2)
163615 -12 1135  PA7ZZ SM5UNR RRR
163630  -3 1878  SM5UNR PA7ZZ 73
163815 -10 2089  SM5UNR RL2F RRR

60m

UTC    dB Audio  Message
200145  -3 2117  SP4MPF SM5UNR -13
200200 -13 1044  SM5UNR UN7GBX MN83
200200 -17 2117  SM5UNR SP4MPF R-06
200215  -1 2117  SP4MPF SM5UNR RR73
200230 -14 2117  SM5UNR SP4MPF 73
200230 -10 1901  SM5UNR DK7ZT +09
200245  +0 2117  SP4MPF SM5UNR 73
200300 -12 1901  SM5UNR DK7ZT +09 (x2)
162645 -10 1177  CQ SM5UNR JO88
162700 -14 1233  SM5UNR DL4YDR JO32
162715 -12 1177  DL4YDR SM5UNR -08
162730 -11 1234  SM5UNR DL4YDR R+02
162745 -13 1177  DL4YDR SM5UNR RRR
162800 -13 1234  SM5UNR DL4YDR 73

20m

UTC    dB Audio  Message
131230 -20 1956  SM5UNR LZ1RAY RR73
131300  +8 1522  SM5UNR GJ0KYZ IN89 (x4)
132245 -11  525  SM5UNR R4CF -10 (x2)
051315 -13 2403  EP2AES SM5UNR JO88
052000 -10 1522  SM5UNR DG3BZ JO31
052030 +16  679  SM5UNR F1PBZ -03
052145 -20 2029  CQ SM5UNR JO88 (x2)
185300  +3  485  SM5UNR 7X2KF -14
070630  +4 1329  SM5UNR YO5PHL KN16
071215  -5 1182  SM5UNR UB4CJS RR73

10m

UTC    dB Audio  Message
115100 -21 2046  SM5UNR PD1ADA R-07 (x2)
115200  +2 2686  SM5UNR F1PBZ RR73
120230 -12 1125  SM5UNR DN9SR JO30 (x9)

80m

UTC    dB Audio  Message
213245 -11 2054  SV1EKI SM5UNR -09
213300 +12 2702  SM5UNR SV1EKI R-15
213315 -12 2054  SV1EKI SM5UNR RRR
213330 +10 2702  SM5UNR SV1EKI R-15
213345 -12 2054  SV1EKI SM5UNR RRR
213400 +10 2702  SM5UNR SV1EKI R-15
213415  -7 2054  SV1EKI SM5UNR RRR
213430  +9 2702  SM5UNR SV1EKI R-15
213445  -1 2054  SV1EKI SM5UNR RRR
215900  +7 1942  SM5UNR OH5KNL -18 (x2)
215945 -21 1353  OH5KNL SM5UNR 73
220045 -21 1353  RC6OD SM5UNR JO88 (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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