SM3JGG — 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: JP81

Receiver-side FT8 activity involving SM3JGG, decoded by SO8OO in southeastern Poland. 821 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, across 42 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-22.

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 821 FT8 messages attributed to SM3JGG as the transmitting token by decoded message structure across 42 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (41%), followed by 160 m (31%) and 80 m (22%). Most decodes (85%) fell within the six-hour window 01:00-07:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (68%); the estimated median was -4 dB.

Overview

821

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

160m · 253 80m · 177 40m · 340 20m · 51

First attributed message: 2026-06-07
Last attributed message: 2026-10-22 03:27 UTC

Observed FT8 message patterns

Attributed sample: 821 messages
Active dates: 42 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -15 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 80, moderate (-15 to -9 dB) 184, strong (≥ -8 dB) 557.

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 SM3JGG in decoded directed-looking exchanges:

F1PBZ · France ×3 CT2GQA · Portugal ×3 DL1VVQ · Fed. Rep. of Germany ×2 SV8JE · Greece ×2 DL9KM · Fed. Rep. of Germany ×2 G3TKT · England ×2 OM6APJ · Slovak Republic ×2 R4FDD · European Russia ×2 UA9SY · Asiatic Russia ×2 ON4MAP · Belgium ×2 R7DX · European Russia ×2 CT2HEV · Portugal

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 SM3JGG

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: JP81 · 387 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,319 km (approx.)
Last such locator decoded: 2026-10-22 03:27 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	SM3JGG S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 12:48	10m	- / -10	CT2HEV	-13 / -	4	✓ Closing fragment
10-22 03:26	160m	+4 / -	R6ZAJ	-24 / -10	4	✓ Closing observed
10-22 03:22	160m	+7 / -2	YO8RAW	-10 / +6	5	✓ Full exchange observed
10-22 03:22	160m	+5 / -18	DF3JO	-21 / +1	4	✓ Full exchange observed
10-22 03:18	160m	+5 / +2	DL1VVQ	-4 / -13	6	✓ Full exchange observed
10-22 03:17	160m	+4 / -2	LZ1ST	+1 / +4	5	✓ Full exchange observed
10-22 03:13	160m	+5 / -16	RA6ANN	-22 / +4	9	✓ Full exchange observed
10-22 03:13	160m	+8 / -	SK3GA	- / +6	2	✓ Closing fragment
10-22 03:13	160m	+4 / -	PE1NPS	-16 / -1	6	✓ Closing observed
10-22 03:12	160m	+4 / -	F4EGM	-23 / +7	4	✓ Full exchange observed
10-19 01:37	40m	-15 / -	UA9SY	- / 0	2	Partial capture
10-19 01:34	40m	-10 / -	IK2ZJR	-9 / +3	5	✓ Full exchange observed
10-19 01:32	40m	-13 / -	G3TKT	- / -4	2	✓ Closing fragment
10-19 01:31	40m	-12 / -19	R4FDD	0 / -12	4	✓ Full exchange observed
10-19 01:25	40m	-18 / -	DL6LAY	- / +3	2	✓ Closing fragment
10-19 01:23	40m	-18 / -	F1PBZ	+4 / 0	3	✓ Closing observed
10-19 01:10	160m	+5 / -	PI4DX	+12 / -	5	✓ Full exchange observed
10-15 04:41	160m	- / -	IZ2DJP	-2 / -	2	Partial capture
10-15 04:41	160m	+5 / -	ON7DE	-20 / 0	4	✓ Closing observed
10-15 04:39	160m	+5 / -4	ON8DM	+13 / +1	6	✓ Full exchange observed
10-15 04:38	160m	+6 / -	LA3SP	- / +3	2	✓ Closing fragment
10-15 04:35	160m	+8 / -17	SV2JAO	-22 / +4	4	✓ Full exchange observed
10-15 04:31	160m	+7 / -7	IK3BNO	+5 / -	6	✓ Full exchange observed
10-15 04:26	160m	+7 / -	DL8WEM	-12 / -9	6	✓ Full exchange observed
10-14 04:30	40m	- / -9	4Z1RZ	-8 / -	2	Partial capture
10-14 04:27	40m	- / -8	R6FML	-17 / -	3	✓ Closing fragment
10-14 04:17	40m	- / -20	CT2GQA	-8 / -	3	✓ Closing fragment
10-13 01:55	80m	-1 / +6	IU2THY	+20 / -3	4	✓ Full exchange observed
10-13 01:53	80m	-4 / -13	CT2GQA	-5 / 0	7	✓ Full exchange observed
10-13 01:50	80m	-2 / 0	G3TKT	-6 / -	7	✓ Full exchange observed
10-13 01:49	80m	-5 / -16	IT9CCB	+14 / -7	5	✓ Full exchange observed
10-12 11:30	10m	- / +5	CS7BDU	-24 / -	2	Partial capture
10-09 17:22	160m	- / -	DL6WAB	-16 / -	2	Partial capture
10-09 17:18	160m	+8 / -8	S58T	+10 / -18	6	✓ Full exchange observed
10-09 17:15	160m	+3 / -8	OK1VKX	+6 / +6	6	✓ Full exchange observed
10-09 17:11	160m	+6 / -12	RU3OZ	-14 / -10	6	✓ Full exchange observed
10-09 17:10	160m	+9 / -	RA1WU	+4 / -	8	✓ Full exchange observed
10-09 17:10	160m	+8 / -3	SQ9PBV	+11 / -18	5	✓ Full exchange observed
10-08 01:27	40m	- / -5	RO6G	-22 / -	2	Partial capture
10-08 01:19	40m	- / -17	4X5CG	-16 / -	3	✓ Closing fragment
10-08 01:15	80m	-1 / +8	ON4MAP	-10 / -4	5	Partial capture
10-08 01:11	80m	+3 / -4	R4FDD	-7 / +9	6	✓ Full exchange observed
10-06 06:06	40m	-8 / -	UT8IIV	- / -9	2	✓ Closing fragment
10-06 06:05	40m	-6 / -	PA9HK	- / -7	2	✓ Closing fragment
10-06 06:02	40m	-7 / -	DL8OAZ	-18 / +4	4	✓ Closing observed
10-06 05:59	40m	-8 / -5	GJ0KYZ	-8 / 0	3	✓ Full exchange observed
10-06 05:57	40m	-7 / -	SQ8V	- / 0	2	✓ Closing fragment
10-06 05:56	40m	-8 / -	ON4CET	0 / 0	8	✓ Full exchange observed
10-06 05:56	40m	-6 / -	F5NMW	- / -7	2	✓ Closing fragment
10-06 05:52	40m	+6 / -	EA8WU	- / -4	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
113045 -23 1880  SM3JGG CS7BDU IM58 (x2)
123745 -11  718  SM3JGG CR7BUW IM58
124815 -13 1598  SM3JGG CT2HEV IM58 (x4)

160m

UTC    dB Audio  Message
032245 -10 1308  SM3JGG YO8RAW KN36
032245 -21 1402  SM3JGG DF3JO R-18
032300  +5 1402  DF3JO SM3JGG RR73 (x2)
032345 -10 1308  SM3JGG YO8RAW -02
032400  +8 1402  YO8RAW SM3JGG R+06
032415  -9 1308  SM3JGG YO8RAW RR73
032430  +6 1402  YO8RAW SM3JGG 73
032500  +2 1402  CQ SM3JGG JP81 (x2)
032600  +7 1402  R6ZAJ SM3JGG -10 (x2)
032645 -24 1403  SM3JGG R6ZAJ 73
032700  +2 1402  R6ZAJ SM3JGG 73
032730  +1 1402  CQ SM3JGG JP81

40m

UTC    dB Audio  Message
013145  +2 2301  SM3JGG R4FDD RR73
013200 -13 2300  R4FDD SM3JGG 73
013230 -12 2300  G3TKT SM3JGG -04 (x2)
013400  -9 2300  CQ SM3JGG JP81
013415  -8 2300  SM3JGG IK2ZJR JN45
013430 -11 2301  IK2ZJR SM3JGG +03
013445  -9 2300  SM3JGG IK2ZJR R+19
013500  -9 2300  IK2ZJR SM3JGG RR73
013515 -11 2300  SM3JGG IK2ZJR 73
013530 -13 2300  RO6G SM3JGG R+00
013600 -14 2300  CQ SM3JGG JP81 (x2)
013700 -17 2301  UA9SY SM3JGG +00 (x2)

80m

UTC    dB Audio  Message
015430  -7 2665  CT2GQA SM3JGG RR73
015445  -8 2664  SM3JGG CT2GQA 73
015500  -8 2664  CT2GQA SM3JGG 73
015530  -5 2664  CQ SM3JGG JP81
015545 +21 2716  SM3JGG IU2THY JN45
015600  +2 2664  IU2THY SM3JGG -03
015615 +18 2716  SM3JGG IU2THY R+06
015630  -4 2664  IU2THY SM3JGG RR73
015700  -5 2664  CQ SM3JGG JP81 (x6)
020015 +14 3065  SM3JGG E75FM JN93

20m

UTC    dB Audio  Message
054430 -13 1926  OK1UOZ SM3JGG -12
054530 -12 1926  CQ SM3JGG JP81
054545 -18 1926  SM3JGG SM3ULU JP81
054600 -15 1926  DL1R SM3JGG -08 (x3)
054730 -15 1926  CQ SM3JGG JP81
054800 -13 1926  DL1R SM3JGG -07
054815 -24 1927  SM3JGG OH1LA KP01
054930  +3 1927  CQ SM3JGG JP81
031615  -1  550  SM3JGG EX8ABC MN72 (x3)
032230  +0 1767  SM3JGG EX7CQ +09 (x2)

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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