F1UTB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: IN99

Receiver-side FT8 activity involving F1UTB, decoded by SO8OO in southeastern Poland. 33 FT8 messages attributed to this token as transmitter, on 60m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-08-08 and 2026-08-30.

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 33 FT8 messages attributed to F1UTB as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (97%), followed by 60 m (3%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (94%); the estimated median was +3 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+3 dB

Estimated median S/N

Bands

60m · 1 20m · 32

First attributed message: 2026-08-08
Last attributed message: 2026-08-30 17:01 UTC

Observed FT8 message patterns

Attributed sample: 33 messages
Active dates: 5 UTC dates
Estimated median S/N: +3 dB
Estimated 10th-90th percentile: -8 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 31.

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 F1UTB in decoded directed-looking exchanges:

DF5DY · Fed. Rep. of Germany DK8HC · Fed. Rep. of Germany EA3HKD · Spain K6ND · United States RN6MA · European Russia SP6DOL · Poland TN8GD · Republic of the Congo WA4MIT · United States YO5PHL · Romania

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 F1UTB

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: IN99 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,633 km (approx.)
Last such locator decoded: 2026-08-30 16:59 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	F1UTB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 17:01	20m	- / -	DL8YBL	-8 / -	2	Partial capture
08-30 17:00	20m	+2 / -	DK8HC	- / -5	2	✓ Closing fragment
08-30 16:58	20m	- / -	F5CKQ	-8 / -	2	Partial capture
08-30 16:57	20m	+3 / -	DF5DY	- / +3	2	✓ Closing fragment
08-30 16:56	20m	-2 / -10	EA3HKD	-8 / -4	4	✓ Full exchange observed
08-25 09:03	40m	- / -	UT4PA	+6 / -	2	Partial capture
08-25 09:00	20m	- / -15	IU8JLX	-3 / -	2	Partial capture
08-25 08:57	20m	+2 / -	WA4MIT	- / -23	2	✓ Closing fragment
08-25 08:57	20m	- / -	F1PSX	+1 / -	2	Partial capture
08-25 08:55	20m	+6 / -	SP6DOL	- / +5	2	✓ Closing fragment
08-25 08:54	20m	- / -	IW5ALZ	-12 / -	4	Partial capture
08-25 08:53	20m	- / -14	OS4K	-3 / -	3	Partial capture
08-25 08:51	20m	+2 / -	KF5VDX	- / -16	2	Partial capture
08-25 08:51	20m	- / -	R3KCW	+8 / -	2	Partial capture
08-25 08:50	20m	+1 / -6	F1PBZ	+10 / -21	3	Partial capture
08-25 08:48	20m	- / -	DL1R	-9 / -	3	Partial capture
08-25 08:47	20m	+4 / -5	RN6MA	+16 / -1	5	✓ Full exchange observed
08-08 16:04	20m	+2 / -	K6ND	- / -9	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
165615  +7 1849  CQ F1UTB IN99
165630 -11 1088  F1UTB EA3HKD JN11
165645  +6 1849  CQ F1UTB IN99
165715  +5 1849  EA3HKD F1UTB -04
165745  +5 1849  DF5DY F1UTB +03 (x2)
165830  -5 2352  F1UTB F5CKQ IN95
165830  -4 1218  F1UTB EA3HKD R-10
165845  -8 1849  EA3HKD F1UTB RR73
165945  -6 1849  LY2BSW F1UTB IN99
170000 -11 2352  F1UTB F5CKQ IN95
170045  +3 1849  DK8HC F1UTB -05
170100  -7 1618  F1UTB DL8YBL JO31
170115  +0 1849  DK8HC F1UTB RR73
170130  -8 1618  F1UTB DL8YBL JO31

40m

UTC    dB Audio  Message
090300  +3 1005  F1UTB UT4PA KO20 (x2)

60m

UTC    dB Audio  Message
082315 -11  898  CQ F1UTB IN99

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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