SP5JEC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Poland Most frequent locator attributed to this token: KO02

Receiver-side FT8 activity involving SP5JEC, decoded by SO8OO in southeastern Poland. 32 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-07-12 and 2026-08-23.

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 32 FT8 messages attributed to SP5JEC as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). Most decodes (94%) fell within the six-hour window 14:00-20:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -4 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

40m · 32

First attributed message: 2026-07-12
Last attributed message: 2026-08-23 18:32 UTC

Observed FT8 message patterns

Attributed sample: 32 messages
Active dates: 4 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -17 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 7, 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.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SP5JEC in decoded directed-looking exchanges:

PD1DG · Netherlands Z30WWA · North Macedonia 3A2MW · Monaco GJ0KYZ · Jersey UA4FEN · European Russia DH5LS · Fed. Rep. of Germany EI8GS · Ireland EW8AAC · Belarus HA3GO · Hungary SQ5EKY · Poland YU7AS · Serbia

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 SP5JEC

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: KO02 · 13 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 290 km (approx.)
Last such locator decoded: 2026-08-23 18:30 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	SP5JEC S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 18:48	20m	- / -14	IU5HIU	+1 / -	2	Partial capture
08-23 18:40	20m	- / -8	GJ0KYZ	+8 / -	2	✓ Closing fragment
08-23 18:36	20m	- / -	UA4FEN	+9 / -	3	✓ Closing fragment
08-23 18:36	20m	- / -3	EA5IYD	0 / -	6	Partial capture
08-23 18:35	20m	- / -10	3A2MW	-6 / -	2	✓ Closing fragment
08-23 18:30	40m	+3 / -18	DH5LS	-3 / -5	8	✓ Full exchange observed
08-23 18:25	40m	+6 / -	YU7AS	- / -3	3	✓ Closing fragment
08-23 18:19	40m	0 / 0	EW8AAC	-2 / -1	6	✓ Full exchange observed
08-23 18:10	40m	-2 / +3	EN100WQ	-4 / +7	5	Partial capture
08-23 18:08	40m	-8 / -	YL3FW	- / -	2	Partial capture
08-20 20:00	40m	-11 / -11	HA3GO	+3 / -	4	✓ Closing observed
08-20 19:41	40m	-13 / -8	<...>	-11 / +1	3	Partial capture
07-19 14:54	40m	-7 / -21	R3WDW	-12 / -1	2	Partial capture
07-19 14:47	40m	-16 / -2	SQ5EKY	-11 / +5	8	✓ Full exchange observed
07-12 18:39	40m	-16 / -	EI8GS	- / -13	2	✓ Closing fragment
07-05 10:13	10m	- / -15	Z30WWA	-15 / -	2	✓ Closing fragment
07-05 10:11	10m	- / -10	PD1DG	-18 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
183545  -6 1133  SP5JEC 3A2MW -10
183615  +0 2038  SP5JEC EA5IYD IM98
183615  -6 1133  SP5JEC 3A2MW RR73
183645  +8 1134  SP5JEC UA4FEN +14 (x3)
183815  -5 2038  SP5JEC EA5IYD IM98 (x4)
184030 +10 1025  SP5JEC GJ0KYZ -08
184045  +3 2038  SP5JEC EA5IYD R-03
184100  +6 1025  SP5JEC GJ0KYZ RR73
184800  +2 2377  SP5JEC IU5HIU JN53 (x2)

40m

UTC    dB Audio  Message
182015  +1 1722  EW8AAC SP5JEC R-01 (x2)
182130  -2 1724  SP5JEC EW8AAC RR73
182145  -1 1722  EW8AAC SP5JEC 73
182530  +8 1134  YU7AS SP5JEC KO02 (x3)
183000  +0 1206  DH5LS SP5JEC KO02 (x2)
183045  -2 1206  SP5JEC DH5LS -18
183100  +5 1206  DH5LS SP5JEC R-05
183115  -3 1206  SP5JEC DH5LS -18
183130  +1 1206  DH5LS SP5JEC R-05
183145  -5 1206  SP5JEC DH5LS RRR
183200  +8 1206  DH5LS SP5JEC 73

10m

UTC    dB Audio  Message
101100 -14 1362  SP5JEC PD1DG -10 (x2)
101330 -15 1002  SP5JEC Z30WWA -15 (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.

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