F4TNK — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: France Most frequent locator attributed to this token: JN23

Receiver-side FT8 activity involving F4TNK, decoded by SO8OO in southeastern Poland. 49 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 1 UTC dates in the available aggregate history. Last observed 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 49 FT8 messages attributed to F4TNK as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (65%), followed by 20 m (33%) and 80 m (2%). In this small sample, the estimated median decoder S/N was -4 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 1 40m · 32 20m · 16

First attributed message: 2026-08-23
Last attributed message: 2026-08-23 20:41 UTC

Observed FT8 message patterns

Attributed sample: 49 messages
Active dates: 1 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -10 to +1 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 10, strong (≥ -8 dB) 38.

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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with F4TNK in decoded directed-looking exchanges:

BA3NZ · China DL9KM · Fed. Rep. of Germany IQ4JO · Italy

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 F4TNK

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: JN23 · 43 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,462 km (approx.)
Last such locator decoded: 2026-08-23 20:41 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	F4TNK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-23 20:42	80m	- / -	OH/SM5MRW	-4 / -	2	Partial capture
08-23 20:41	80m	- / -10	IQ4JO	+3 / -	3	✓ Closing fragment
08-23 20:37	40m	-4 / -	BG2GWN	- / -	2	Partial capture
08-23 20:32	40m	-5 / -	VK2NN	- / -	3	Partial capture
08-23 20:19	40m	-6 / -	YB2TTM	- / -	3	Partial capture
08-23 20:16	40m	-9 / -4	GM5DNA	-11 / -7	4	Partial capture
08-23 20:15	40m	-10 / -	DL9KM	- / -9	2	✓ Closing fragment
08-23 20:07	20m	-1 / -	BG7BMG	- / -	3	Partial capture
08-23 20:05	20m	-2 / -	BG5JGG	- / -	2	Partial capture
08-23 20:01	20m	-3 / -	BA3NZ	- / -13	5	✓ Closing fragment
08-23 19:58	20m	+3 / -	XU7O	- / -	3	Partial capture
08-23 18:32	40m	-1 / -	UN0PA	- / -	2	Partial capture
08-23 18:28	40m	-4 / -	ZL2NU	- / -	6	Partial capture

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
204115 -21 2196  CQ F4TNK JN23
204130  +2 1978  F4TNK IQ4JO JN63
204200  -5 1640  <F4TNK> OH/SM5MRW
204200  +2 1978  F4TNK IQ4JO R-10
204230  -2 1640  <F4TNK> OH/SM5MRW
204230  +4 1978  F4TNK IQ4JO 73

40m

UTC    dB Audio  Message
201930  -8 2777  YB2TTM F4TNK JN23 (x3)
202230  -9 2777  CQ DX F4TNK JN23
203215  -5 2941  VJ6X F4TNK JN23
203245  -5 2941  VK2NN F4TNK JN23 (x3)
203415  -4 2940  CQ DX F4TNK JN23 (x3)
203630  +2 2941  <...> F4TNK R-10
203730  -3 2941  BG2GWN F4TNK JN23 (x2)
203830  -2 2941  CQ DX F4TNK JN23

20m

UTC    dB Audio  Message
195945  +1 3031  XU7O F4TNK JN23
200145  -8 3034  BA3NZ F4TNK JN23 (x5)
200415  -2 3035  CQ F4TNK JN23 (x2)
200500  -7 2133  F4TNK IQ4JO JN63
200515  -2 3034  BG5JGG F4TNK JN23 (x2)
200645  +1 3034  XU7O F4TNK JN23
200745  -2 3035  BG7BMG F4TNK JN23 (x3)

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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