SA4JEA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JP70

Receiver-side FT8 activity involving SA4JEA, decoded by SO8OO in southeastern Poland. 47 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 10m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-22.

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 47 FT8 messages attributed to SA4JEA as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (45%), followed by 160 m (19%) and 10 m (19%). Most decodes (77%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

160m · 9 80m · 8 40m · 21 10m · 9

First attributed message: 2026-06-07
Last attributed message: 2026-08-22 08:21 UTC

Observed FT8 message patterns

Attributed sample: 47 messages
Active dates: 5 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 21.

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 SA4JEA in decoded directed-looking exchanges:

HB9CXZ · Switzerland 5Z4VJ · Kenya SP1EG · Poland PF1B · Netherlands PY2GIG · Brazil PY2WC · Brazil

Most frequent locator attributed to SA4JEA

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: JP70 · 26 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,249 km (approx.)
Last such locator decoded: 2026-08-08 01:33 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	SA4JEA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-12 07:57	20m	- / -1	YT2TOR	-20 / -	2	Partial capture
08-08 01:33	40m	-17 / -	TA3ZZ	- / -	2	Partial capture
08-08 01:32	40m	-17 / -	T42FCR	- / -	2	Partial capture
08-08 01:28	40m	-16 / -	XE1SWW	- / -	2	Partial capture
08-08 01:26	40m	-17 / -	XE1RK	- / -	4	Partial capture
08-08 01:24	40m	-20 / -	KQ4NDT	- / -24	2	Partial capture
08-08 01:23	40m	-16 / -	HI8J	- / -	2	Partial capture
08-08 01:22	40m	-20 / -	PY2WC	- / -16	2	✓ Closing fragment
08-08 01:21	40m	-18 / -	PY2GIG	- / -16	2	✓ Closing fragment
07-14 12:17	10m	- / -13	HB9CXZ	-2 / -	2	✓ Closing fragment
07-09 03:31	20m	- / -16	5Z4VJ	-19 / -	3	✓ Closing fragment
06-24 10:34	20m	- / -7	SP1EG	-4 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
012430 -19 1320  KQ4NDT SA4JEA -24 (x2)
012600 -18 1320  XE1RK SA4JEA JP70 (x4)
012800 -17 1320  XE1SWW SA4JEA JP70 (x2)
012930 -20 1319  HI8J SA4JEA JP70
013215 -14 1320  T42FCR SA4JEA JP70 (x2)
013315 -15 1320  TA3ZZ SA4JEA JP70 (x2)
081730  -5  560  PD1HTW SA4JEA R-04
082100 -10  560  PF1B SA4JEA RR73

20m

UTC    dB Audio  Message
103415  -3 2065  SA4JEA SP1EG -07 (x2)
033100 -18 2229  SA4JEA 5Z4VJ -16 (x3)
075745 -19 2233  SA4JEA YT2TOR -01 (x2)

10m

UTC    dB Audio  Message
121700  -5 2008  SA4JEA HB9CXZ -13 (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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