S55V — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Slovenia Most frequent locator attributed to this token: JN76

Receiver-side FT8 activity involving S55V, decoded by SO8OO in southeastern Poland. 55 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-10.

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 55 FT8 messages attributed to S55V as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -9 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

40m · 55

First attributed message: 2026-09-10
Last attributed message: 2026-09-10 16:43 UTC

Observed FT8 message patterns

Attributed sample: 55 messages
Active dates: 1 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -17 to -4 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 20.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with S55V in decoded directed-looking exchanges:

F4BJN · France ×2 F5PMF · France ON4ANV · Belgium ON7BBR/P · Belgium DA1ST · Fed. Rep. of Germany DL1SRS · Fed. Rep. of Germany DL1THB · Fed. Rep. of Germany DL2ZJA · Fed. Rep. of Germany DL8TV · Fed. Rep. of Germany F1IQH · France F4JYH · France F4MZI · France

Most frequent locator attributed to S55V

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: JN76 · 21 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-09-10 16:40 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	S55V S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 16:45	40m	- / -6	YO4NF	+4 / -	2	✓ Closing fragment
09-10 16:40	40m	-6 / -7	F1IQH	-7 / -10	5	✓ Full exchange observed
09-10 15:54	40m	- / +9	DL1THB	-3 / -	3	✓ Closing fragment
09-10 15:24	40m	-9 / -10	DL8TV	+2 / -24	4	✓ Full exchange observed
09-10 15:21	40m	-10 / -12	DL2ZJA	-4 / -	4	✓ Closing observed
09-10 15:19	40m	- / -	DG1SCD	+4 / -	2	Partial capture
09-10 15:18	40m	-9 / -16	R5AV	-12 / -15	4	✓ Full exchange observed
09-10 15:14	40m	-17 / -16	PA3EWR	-6 / -	5	✓ Closing observed
09-10 15:11	40m	-6 / -	M0THH	- / -16	2	✓ Closing fragment
09-10 15:07	40m	- / -	DK1XAM	-12 / -	2	Partial capture
09-10 15:07	40m	- / +5	DL1SRS	-18 / -	2	✓ Closing fragment
09-10 15:06	40m	- / -	DF3QL	-10 / -	2	Partial capture
09-10 15:00	40m	- / -	DK1XAM	-6 / -	4	Partial capture
09-10 14:57	40m	-17 / -	IK5ZTT	- / -5	3	✓ Closing fragment
09-10 14:54	40m	-8 / -	F4JYH	- / -20	3	✓ Closing fragment
09-10 14:50	40m	-12 / -7	OZ1SMB	-3 / -	6	✓ Closing observed
09-10 14:49	40m	-8 / -	F4MZI	-15 / -14	3	✓ Closing observed
09-10 14:44	40m	-14 / -	ON1JP	- / -18	4	✓ Closing fragment
09-10 14:43	40m	-8 / -	SQ8GHZ	- / +4	2	✓ Closing fragment
09-10 14:37	40m	-8 / -	F4BJN	- / -19	5	✓ Closing fragment
09-10 14:35	40m	- / -4	F1PBZ	-16 / -	2	Partial capture
09-10 14:34	40m	-5 / -2	DA1ST	-12 / -2	4	✓ Full exchange observed
08-07 15:32	10m	- / +4	F4FSY	-12 / -	2	Partial capture
08-07 15:32	10m	- / -	ON4ANV	-21 / -	2	✓ Closing fragment
08-07 15:21	10m	- / -	F5PMF	-16 / -	5	✓ Closing fragment
08-07 15:07	10m	- / +5	ON7BBR/P	-5 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
155445  -4  965  S55V DL1THB JO64 (x2)
155545 -10 1786  S55V R6DVS KN96
155545  -3  965  S55V DL1THB 73
164015  -7  774  CQ S55V JN76
164030  -3  773  S55V F1IQH JN27
164045  -9  774  CQ S55V JN76
164100  -8  774  S55V F1IQH JN27
164115  -3  774  F1IQH S55V -10
164130  +7  854  S55V RV6AVU KN94
164130  -9  774  S55V F1IQH R-07
164145  -8  773  F1IQH S55V RR73
164345  +0  853  RV6AVU S55V +02
164530  +4  894  S55V YO4NF -06 (x2)

10m

UTC    dB Audio  Message
150745  -7 2473  S55V ON7BBR/P JO20 (x3)
152115 -14 1824  S55V F5PMF JN08 (x5)
152930  -4 2163  S55V F2JD -11
153200 -23 1317  S55V ON4ANV R+21 (x2)
153230 -17 1517  S55V F4FSY +04 (x2)
150330 -15  808  S55V M0IAP IO93

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