F3DD — 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: JN18

Receiver-side FT8 activity involving F3DD, decoded by SO8OO in southeastern Poland. 35 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-09 and 2026-11-02.

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 35 FT8 messages attributed to F3DD as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 40 m (43%) and 20 m (6%). Most decodes (91%) fell within the six-hour window 00:00-06:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 18 40m · 15 20m · 2

First attributed message: 2026-07-09
Last attributed message: 2026-11-02 06:18 UTC

Observed FT8 message patterns

Attributed sample: 35 messages
Active dates: 3 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -23 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 12, strong (≥ -8 dB) 6.

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 F3DD in decoded directed-looking exchanges:

F4FWT · France CT7BRV · Portugal OE8PIT · Austria OE9NET · Austria PA7ZZ · Netherlands SP6JIU · Poland 7X5CY · Algeria EA1IOK · Spain G8OO · England ON4MAP · Belgium OZ1KZX · Denmark PI4DX · Netherlands

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 F3DD

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: JN18 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,370 km (approx.)
Last such locator decoded: 2026-09-08 01:26 UTC

Other locator fields attributed to this token: JN08 (4).

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	F3DD S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 05:51	40m	-22 / -	DH2NJS	-5 / -1	11	Partial capture
11-02 05:45	40m	-19 / -15	CT7BRV	-12 / -	3	✓ Closing observed
11-02 05:26	80m	-13 / -13	SP5KG	+6 / -	2	Partial capture
11-02 05:24	80m	-17 / -	PI4DX	- / -	3	✓ Closing fragment
11-02 05:24	80m	-12 / +4	ON4MAP	-13 / -14	13	✓ Full exchange observed
11-02 05:14	160m	- / -9	F4FWT	-15 / -	2	✓ Closing fragment
11-02 05:07	80m	-20 / -18	S50XX	+10 / +10	7	✓ Full exchange observed
11-02 05:01	80m	- / -4	OS4K	-14 / -	2	Partial capture
11-02 05:01	80m	- / -10	EA1IOK	-4 / -	5	✓ Closing fragment
10-25 08:51	40m	- / -	SP9UPH	+10 / -	3	Partial capture
10-25 08:47	40m	- / -8	PA7ZZ	-10 / -	2	✓ Closing fragment
10-25 08:43	40m	- / -9	F1PBZ	-9 / -	2	Partial capture
10-25 08:40	40m	- / -12	OE9NET	-18 / -	4	✓ Closing fragment
10-11 11:58	40m	- / -	F4BYA	-2 / -	3	Partial capture
10-05 12:46	40m	- / -7	OE8PIT	-6 / -	4	✓ Closing fragment
09-08 01:24	80m	-20 / -	OZ1KZX	- / -	4	Partial capture
09-08 01:21	80m	-22 / -18	OZ1KZX	+2 / +7	4	✓ Full exchange observed
09-08 01:17	80m	- / -14	G0ORC	+3 / -	3	Partial capture
09-08 01:10	80m	-20 / -16	7X5CY	-7 / -3	3	✓ Full exchange observed
09-08 00:58	40m	-4 / -	A61DD	- / -	3	Partial capture
08-11 21:54	80m	- / -14	G8OO	-9 / -	4	✓ Closing fragment
08-11 21:47	40m	- / +2	SP6JIU	+11 / -	2	✓ Closing fragment
08-11 21:43	40m	- / -	DL6RS	-16 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
054500 -11 2168  F3DD CT7BRV -15 (x2)
054545 -19 2169  CT7BRV F3DD 73
055130  -8 2035  F3DD DH2NJS JO50 (x2)
055215 -18 1639  DH2NJS F3DD -01
055230  -6 2035  F3DD DH2NJS JO50 (x6)
055545 -23 2034  DH2NJS F3DD +07 (x2)
061800 -15 1037  CQ F3DD JN08                          a1

80m

UTC    dB Audio  Message
052530 -17 2357  PI4DX F3DD 73
052545 -11 1362  F3DD ON4MAP JO20
052600 -13 2349  SP5KG F3DD JN08
052615  +6 2348  F3DD SP5KG -13
052615 -15 1362  F3DD ON4MAP JO20
052630 -11 2349  ON4MAP F3DD -14
052645 -18 1363  F3DD ON4MAP R+04
052700 -11 2349  ON4MAP F3DD -14
052715 -12 1363  F3DD ON4MAP R+04
052730 -11 2349  ON4MAP F3DD -14
052745 -16 1362  F3DD ON4MAP R+04
052800 -14 2349  ON4MAP F3DD RRR
052815 -12 1363  F3DD ON4MAP 73
052815 +12 1048  F3DD OM3ZAS -21
052845  +8 2349  F3DD SP5KG RR73

160m

UTC    dB Audio  Message
051415 -14 2008  F3DD F4FWT -09 (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.

CW

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

Explore CW reception at SO8OO

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