S57PR — FT8 activity observed at SO8OO

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

Receiver-side FT8 activity involving S57PR, decoded by SO8OO in southeastern Poland. 110 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-26 and 2026-08-21.

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 110 FT8 messages attributed to S57PR as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (64%), followed by 20 m (36%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was 0 dB.

Overview

110

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

40m · 70 20m · 40

First attributed message: 2026-07-26
Last attributed message: 2026-08-21 19:29 UTC

Observed FT8 message patterns

Attributed sample: 110 messages
Active dates: 3 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -13 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 95.

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 S57PR in decoded directed-looking exchanges:

DH1KU · Fed. Rep. of Germany DL1HXA · Fed. Rep. of Germany DL1UDO · Fed. Rep. of Germany F1PSX · France LB5WB · Norway M0PBG · England M0YWA · England M7IFW · England ME7IEB · England PD1PSR · Netherlands PD4FL · Netherlands PD4RJ · Netherlands

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 S57PR

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 · 59 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 631 km (approx.)
Last such locator decoded: 2026-08-21 19:29 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	S57PR S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-27 18:04	20m	- / -8	M7INZ	-8 / -	3	Partial capture
08-27 17:22	20m	- / -	R7OV	-16 / -	3	Partial capture
08-27 17:18	20m	- / -15	TA4SSK	+4 / -	7	✓ Closing fragment
08-25 12:37	20m	- / -	R7OV	-3 / -	3	Partial capture
08-25 11:00	20m	- / +3	F1PSX	-1 / -	9	✓ Closing fragment
08-25 10:56	20m	- / +2	SH5RJX	-24 / -	2	✓ Closing fragment
08-25 10:54	20m	- / +4	ME7IEB	-16 / -	2	✓ Closing fragment
08-23 18:06	20m	- / -	SA3KAK	+2 / -	2	Partial capture
08-23 17:56	20m	- / 0	F4BYA	+16 / -	5	Partial capture
08-23 17:49	20m	- / -	M0YWA	-2 / -	5	✓ Closing fragment
08-23 17:49	20m	- / -14	M7IFW	-18 / -	3	✓ Closing fragment
08-23 17:44	20m	- / +1	LB5WB	-5 / -	2	✓ Closing fragment
08-22 18:13	40m	- / -	PI4TX	-17 / -	3	Partial capture
08-21 19:28	40m	-12 / -	DJ2MS	- / +5	3	✓ Closing fragment
08-21 19:25	40m	-2 / -	R1CBW	- / -13	5	✓ Closing fragment
08-21 19:16	40m	-4 / -	EB2EMZ	- / -15	3	Partial capture
08-21 19:13	40m	+2 / -	G7NUT	- / -11	2	✓ Closing fragment
08-21 19:10	40m	+4 / -17	CT2GQA	-16 / -18	3	✓ Full exchange observed
08-21 19:07	40m	+2 / +3	DB2HA	-1 / +7	7	✓ Full exchange observed
08-21 19:07	40m	-1 / -19	PD1CBH	-2 / +1	5	✓ Full exchange observed
08-21 19:05	40m	0 / -	EA7LDG	- / -2	2	✓ Closing fragment
08-21 19:02	40m	-2 / -	F6BHK	0 / +6	4	✓ Closing observed
08-21 18:57	40m	+1 / -	IZ8PPI	- / -11	3	Partial capture
08-21 18:55	40m	-2 / -7	SP7LPD	+3 / -2	5	✓ Full exchange observed
08-21 18:50	40m	+2 / -1	DL1IP	+8 / -	5	✓ Full exchange observed
08-21 18:49	40m	-2 / -	F4NKF	- / -10	2	✓ Closing fragment
08-21 18:47	40m	+2 / -	F6FHZ	-14 / -8	3	✓ Closing observed
08-21 17:26	20m	+2 / -	UR5WCS	- / +8	4	Partial capture
08-21 17:22	20m	+2 / -14	PD4RJ	-8 / -13	3	✓ Full exchange observed
08-21 17:18	20m	+1 / -	YO5PHL	- / -3	4	✓ Closing fragment
08-21 17:14	20m	+1 / -	SP5RFL	- / -7	3	✓ Closing fragment
07-26 08:56	20m	- / -16	PD4FL	-17 / -	3	✓ Closing fragment
07-26 08:51	20m	- / -3	DH1KU	-14 / -	3	✓ Closing fragment
07-26 08:48	20m	- / -	PD1PSR	-20 / -	2	✓ Closing fragment
07-26 08:41	20m	- / -2	M0PBG	-4 / -	3	✓ Closing fragment
07-26 08:38	20m	-15 / -	RX3ASQ	- / -2	3	Partial capture
07-26 08:36	20m	-17 / -	DL1HXA	- / +2	2	✓ Closing fragment
07-26 08:35	20m	-15 / -	DL1UDO	-13 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
123830  -4 1580  S57PR R7OV KN87
171630 -17 2482  S57PR BG4UVR PM01
171800  +6 2481  S57PR TA4SSK KM57 (x7)
172230 -18 2482  S57PR R7OV KN87 (x3)
180400  -8 1275  S57PR M7INZ -08 (x3)

40m

UTC    dB Audio  Message
191730  -3 2687  EB2EMZ S57PR -15
191830  +3 2687  CQ S57PR JN76                         a1 (x2)
192515  -3 2618  R1CBW S57PR JN76 (x5)
192800 -16 1066  DJ2MS S57PR JN76 (x3)
192945  -3 2308  PC1K S57PR JN76
181315 -19 2038  S57PR PI4TX JO22 (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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