SM5BVV — 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 SM5BVV, decoded by SO8OO in southeastern Poland. 38 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-11-05.

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 38 FT8 messages attributed to SM5BVV as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (63%), followed by 40 m (21%) and 80 m (11%). Several six-hour UTC windows tied for the largest share (95%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (71%); the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 4 60m · 24 40m · 8 20m · 2

First attributed message: 2026-06-13
Last attributed message: 2026-11-05 19:42 UTC

Observed FT8 message patterns

Attributed sample: 38 messages
Active dates: 6 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -18 to -9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 27, strong (≥ -8 dB) 1.

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 SM5BVV in decoded directed-looking exchanges:

DH5BM · Fed. Rep. of Germany IU4DTV · Italy 9A4ZM · Croatia DF2NV · Fed. Rep. of Germany DF4WQ · Fed. Rep. of Germany E77LSB · Bosnia-Herzegovina F4GAJ · France F4HGF · France F5AUB · France F5OWT · France G4ZFJ · England G8MIA · England

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 SM5BVV

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 · 15 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,048 km (approx.)
Last such locator decoded: 2026-11-05 19:27 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	SM5BVV S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 19:40	60m	-18 / -19	EA3ISZ	-17 / +6	8	Partial capture
11-05 19:40	60m	- / -	G4ZFJ	-1 / -	3	✓ Closing fragment
11-05 19:33	60m	- / -5	F5OWT	-9 / -	3	✓ Closing fragment
11-05 19:31	60m	- / -	F4HGF	-13 / -	2	✓ Closing fragment
11-05 19:28	60m	- / -5	IK4CBO	-2 / -	4	✓ Closing fragment
11-05 19:27	60m	- / -4	DF2NV	+4 / -	2	✓ Closing fragment
11-05 19:24	60m	- / -17	EA3NE	0 / -	3	Partial capture
11-05 19:21	60m	- / -20	VE1YX	-18 / -	2	Partial capture
11-05 19:20	60m	- / -22	SP9W	-8 / -	2	✓ Closing fragment
11-05 19:19	60m	- / +2	F4GAJ	-13 / -	5	✓ Closing fragment
11-05 19:15	60m	- / -9	SP6IYR	-4 / -	3	✓ Closing fragment
11-05 19:11	60m	- / -10	US0QV	0 / -	3	✓ Closing fragment
11-05 18:01	60m	-21 / -6	E77LSB	-10 / +7	5	✓ Full exchange observed
11-05 17:46	60m	- / -20	HF5A	+4 / -	4	✓ Closing fragment
11-05 17:45	60m	- / -6	F5AUB	-10 / -	3	✓ Closing fragment
11-05 17:41	60m	- / +5	SP2EWQ	-15 / -	3	✓ Closing fragment
11-05 16:19	60m	-17 / -	PA0LAN	- / -2	2	✓ Closing fragment
11-05 16:17	60m	-18 / -2	OH6FSG	-5 / -	3	✓ Closing observed
11-05 16:15	60m	-15 / -	G8MIA	-10 / +10	5	✓ Full exchange observed
11-05 16:13	60m	-16 / -6	SP4HXV	-6 / -	3	✓ Full exchange observed
11-05 16:10	60m	-13 / -3	LY3W	+6 / -	4	✓ Full exchange observed
11-05 16:10	60m	-15 / -5	IK5ZPV	-10 / +9	7	✓ Full exchange observed
11-05 16:08	60m	-15 / -3	DF4WQ	-19 / +1	4	✓ Full exchange observed
11-05 16:07	60m	-12 / -6	9A4ZM	+2 / -	5	✓ Full exchange observed
11-04 10:47	40m	- / -	IU3WNP	-14 / -	2	Partial capture
11-01 17:52	40m	- / -8	IU4DTV	-11 / -	2	✓ Closing fragment
10-29 18:24	80m	- / -	UA3VVA	-8 / -	9	Partial capture
10-29 18:23	80m	- / -	IZ6BRN	+4 / -	2	Partial capture
10-17 17:04	40m	- / -	ER1SKI/P	-6 / -	2	Partial capture
10-17 13:19	40m	- / -11	DH5BM	-11 / -	6	✓ Closing fragment
09-26 10:04	40m	- / -	DA1ST	-23 / -	4	Partial capture
09-25 17:07	80m	- / -	OE2AGZ	-14 / -	6	Partial capture
09-25 17:07	80m	- / -	RX6DA	-10 / -	11	Partial capture
09-25 17:07	80m	- / -	IQ4JO	-4 / -	3	Partial capture
09-25 17:07	40m	- / -	UR5EDX	+2 / -	2	Partial capture
09-25 17:06	80m	- / -	SM5ACQ	-11 / -	6	Partial capture
09-21 18:33	40m	- / -	DL1UDO	-6 / -	3	Partial capture
09-21 18:33	40m	-14 / +3	OE8PIT	+8 / +1	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
193230 -14 1039  SM5BVV F4HGF 73
193300  -5 1938  SM5BVV F5OWT JN18 (x3)
194000  -3  896  SM5BVV G4ZFJ JO01 (x2)
194030 -16 1588  SM5BVV EA3ISZ JN01
194100  +3  896  SM5BVV G4ZFJ 73
194100 -16 1588  SM5BVV EA3ISZ JN01 (x3)
194215 -18 1039  EA3ISZ SM5BVV +06
194230 -19 1588  SM5BVV EA3ISZ R-19 (x3)

40m

UTC    dB Audio  Message
100445 -24 1683  SM5BVV DA1ST JO41 (x3)
131930 -10 1260  SM5BVV DH5BM JO41 (x6)
170430  -7  548  SM5BVV ER1SKI/P KN47 (x2)
175200 -10 1297  SM5BVV IU4DTV -08 (x2)
104700 -14 1163  SM5BVV IU3WNP JN55 (x2)

80m

UTC    dB Audio  Message
171215  -8 1633  SM5BVV RX6DA KN85 (x2)
182300 -13 1410  CQ SM5BVV JO78
182345  +4 2887  SM5BVV IZ6BRN JN63
182415 -10  763  SM5BVV UA3VVA LO06
182415  +5 2887  SM5BVV IZ6BRN JN63
182445 -10  763  SM5BVV UA3VVA LO06
182445 -13 1700  SM5BVV DO2FRE JO62
182545  -7  763  SM5BVV UA3VVA LO06 (x7)

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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