SA5OBE — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JO78

Receiver-side FT8 activity involving SA5OBE, decoded by SO8OO in southeastern Poland. 64 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-04.

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 64 FT8 messages attributed to SA5OBE as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (98%), followed by 80 m (2%). Several six-hour UTC windows tied for the largest share (78%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 1 20m · 63

First attributed message: 2026-06-08
Last attributed message: 2026-09-04 21:21 UTC

Observed FT8 message patterns

Attributed sample: 64 messages
Active dates: 9 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -17 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 18.

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 SA5OBE in decoded directed-looking exchanges:

AA3B · United States AC2XM · United States AD9GE · United States DF8IU · Fed. Rep. of Germany F5PBG · France JF1LMB · Japan KC4DPT · United States SP6AXW · Poland V31DL · Belize WA4FU · United States WI1U · United States

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 SA5OBE

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 · 39 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,048 km (approx.)
Last such locator decoded: 2026-09-04 21:21 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	SA5OBE S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 20:25	20m	-6 / -	KS4OT	- / -	2	Partial capture
08-28 20:40	20m	- / -8	F5PBG	-2 / -	4	✓ Closing fragment
08-28 20:39	20m	- / -	AA3B	+4 / -	2	✓ Closing fragment
08-26 20:53	20m	- / +1	W4ZOR	+1 / -	2	Partial capture
08-25 20:49	20m	- / -9	WA4FU	-13 / -	2	✓ Closing fragment
08-21 23:02	20m	-9 / -	KC4DPT	- / -14	3	✓ Closing fragment
08-13 21:02	20m	- / -	RV9CD	-11 / -	4	Partial capture
08-12 21:42	20m	-14 / -	K2RY	- / -	3	Partial capture
08-12 21:33	20m	-16 / -	W1LEM	- / -8	2	Partial capture
08-12 21:15	20m	-14 / -	V31DL	- / -6	2	✓ Closing fragment
08-12 21:12	20m	-14 / -8	DF8IU	-3 / -7	4	✓ Full exchange observed
08-10 21:03	20m	-16 / -	KC2BBI	- / -14	2	Partial capture
08-10 20:57	20m	-16 / -	N1EDF	- / -26	2	Partial capture
08-10 20:32	20m	-16 / -	WI1U	- / -	2	✓ Closing fragment
08-05 21:41	20m	-11 / -	W1MDK	- / -	3	Partial capture
08-05 21:36	20m	-16 / -	N8FRJ	- / -	3	Partial capture
08-05 21:31	20m	-14 / -	N1PHR	- / -	2	Partial capture
08-05 21:27	20m	-16 / -	NC1RL	- / -	2	Partial capture
08-05 21:23	20m	-14 / -	AD9GE	- / -7	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
212100  +5 2282  VR2ZXP SA5OBE JO78

20m

UTC    dB Audio  Message
204930 -12 1247  SA5OBE WA4FU -09 (x2)
205345  +3  524  SA5OBE W4ZOR +01 (x2)
211515 -16 2046  SA5OBE NF3R -04
203900  +2  653  SA5OBE AA3B +11 (x2)
204000  -2 2348  SA5OBE F5PBG IN78 (x4)
202300  -7 2351  K9EZ SA5OBE JO78
202530  -8 2350  KS4OT SA5OBE JO78 (x2)
202800  -7 2350  KG4OJT SA5OBE R-10

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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