SM5TJH — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO78

Receiver-side FT8 activity involving SM5TJH, decoded by SO8OO in southeastern Poland. 65 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-30 and 2026-11-06.

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 65 FT8 messages attributed to SM5TJH as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (58%), followed by 40 m (26%) and 160 m (12%). Most decodes (78%) fell within the six-hour window 01:00-07:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 8 80m · 38 40m · 17 20m · 1 10m · 1

First attributed message: 2026-06-30
Last attributed message: 2026-11-06 05:04 UTC

Observed FT8 message patterns

Attributed sample: 65 messages
Active dates: 7 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -17 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 7, moderate (-15 to -9 dB) 21, strong (≥ -8 dB) 37.

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 SM5TJH in decoded directed-looking exchanges:

9A5E · Croatia LX1TI · Luxembourg 9K2YM · Kuwait G0BLB · England LX1GG · Luxembourg 5B4AMX · Cyprus KN0BLE · United States R3VE · European Russia SM7TZK · Sweden SP5JMA · Poland SP8HDC · Poland UT2AU · Ukraine

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 SM5TJH

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: JO78 · 26 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,048 km (approx.)
Last such locator decoded: 2026-11-06 05:04 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	SM5TJH S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 05:04	160m	-13 / -	EA8AR	- / -	2	Partial capture
11-06 05:01	160m	-13 / -8	9A5E	+3 / +2	5	✓ Full exchange observed
11-06 04:59	160m	-6 / -2	LX1TI	+13 / -	5	✓ Full exchange observed
11-06 04:49	40m	- / -6	DL1BBO	-8 / -	2	Partial capture
11-06 04:42	80m	-9 / -	UA4FKT	-8 / +7	6	Partial capture
11-06 04:40	80m	-7 / -	KN0BLE	- / -11	3	✓ Closing fragment
11-06 04:37	80m	-14 / -10	E75W	+3 / -	2	Partial capture
11-06 04:34	80m	- / -6	UT2AU	+8 / -	3	✓ Closing fragment
11-06 04:29	80m	-12 / -22	NF3R	-20 / -16	8	Partial capture
11-06 04:28	80m	-6 / -	SP8HDC	- / +4	2	✓ Closing fragment
11-06 04:27	80m	0 / -8	SP5JMA	+6 / -	3	✓ Closing observed
11-06 04:25	80m	-8 / 0	5B4AMX	-3 / -1	4	✓ Full exchange observed
10-24 21:13	40m	- / -	F5PBG	-8 / -	2	Partial capture
10-24 21:11	40m	- / -5	9K2YM	-10 / -	2	✓ Closing fragment
10-24 20:45	80m	-3 / -	JJ3JHP	- / -	3	Partial capture
10-24 20:44	80m	- / -	UA4FKT	+8 / -	3	Partial capture
10-24 20:42	80m	0 / -12	R3VE	-10 / +2	5	✓ Full exchange observed
10-23 06:15	40m	- / -19	G0BLB	-5 / -	4	✓ Closing fragment
10-23 02:09	80m	-13 / -10	SM7TZK	+8 / -	6	✓ Full exchange observed
09-17 19:02	40m	0 / -	OZ1GXW	- / +8	2	Partial capture
09-17 18:52	40m	- / -13	OZ1GXW	0 / -	2	Partial capture
09-17 18:50	40m	-4 / -6	LX1GG	+1 / -9	5	✓ Full exchange observed
09-17 18:46	40m	0 / -	LX1GG	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
045930  -5  706  LX1TI SM5TJH JO78
045945 +12  708  SM5TJH LX1TI -02
050000  -6  705  LX1TI SM5TJH R+23
050015 +14  708  SM5TJH LX1TI RR73
050030  -7  706  LX1TI SM5TJH 73
050145 -15 2130  9A5E SM5TJH JO78
050200  +6 2133  SM5TJH 9A5E -08
050215 -17 2130  9A5E SM5TJH R+02
050230  +0 2133  SM5TJH 9A5E RR73
050245  -6 2130  9A5E SM5TJH 73
050400 -12 1747  EA8AR SM5TJH JO78 (x2)

40m

UTC    dB Audio  Message
185215  +3 2224  SM5TJH OZ1GXW -13 (x2)
190200  +2 1272  OZ1GXW SM5TJH R+08 (x2)
061530  -4 2155  SM5TJH G0BLB -19 (x4)
062045 -10 1339  KZ7Y SM5TJH JO78
211130  -9  786  SM5TJH 9K2YM -05 (x2)
211330  -6 1227  SM5TJH F5PBG IN78 (x2)
044930  -7 2835  SM5TJH DL1BBO R-06 (x2)

80m

UTC    dB Audio  Message
043400  +7  752  SM5TJH UT2AU KO61 (x3)
043645 -12 2047  KC9BK SM5TJH JO78
043715 -14 2048  E75W SM5TJH JO78
043830  +3 2053  SM5TJH E75W -10
044045 -13 1317  KN0BLE SM5TJH JO78 (x3)
044230  -8 1317  SM5TJH UA4FKT LO23
044315  -7 1317  UA4FKT SM5TJH +07 (x5)

20m

UTC    dB Audio  Message
084500 -14 2210  NL8F SM5TJH JO78

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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