F4FCH — 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: JN16

Receiver-side FT8 activity involving F4FCH, decoded by SO8OO in southeastern Poland. 194 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-01 and 2026-11-01.

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 194 FT8 messages attributed to F4FCH as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (55%), followed by 40 m (37%) and 80 m (7%). Most decodes (54%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -4 dB.

Overview

194

Messages attributed

UTC dates decoded

Active 15-min windows

-4 dB

Estimated median S/N

Bands

80m · 14 40m · 71 20m · 107 10m · 2

First attributed message: 2026-07-01
Last attributed message: 2026-11-01 23:40 UTC

Observed FT8 message patterns

Attributed sample: 194 messages
Active dates: 11 UTC dates
Estimated median S/N: -4 dB
Estimated 10th-90th percentile: -14 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 13, moderate (-15 to -9 dB) 39, strong (≥ -8 dB) 142.

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 F4FCH in decoded directed-looking exchanges:

BD4VOJ · China BG4UWQ · China BG7BVP · China DC9GT · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany HB9CNU · Switzerland IK4TVP · Italy KP4QVQ · Puerto Rico OZ1LGJ · Denmark PY2DPM · Brazil R3AP · European Russia R5AV · European Russia

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 F4FCH

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: JN16 · 84 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,439 km (approx.)
Last such locator decoded: 2026-11-01 23:40 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	F4FCH S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-01 23:38	80m	-4 / -	VO1HP	- / -	3	Partial capture
11-01 23:33	80m	-4 / -11	UT4TA	+5 / -2	4	Partial capture
11-01 23:31	80m	-2 / -	F4NJU	- / -21	2	✓ Closing fragment
11-01 23:31	80m	-6 / -16	9A2WA	-14 / -	3	✓ Closing observed
11-01 23:26	80m	- / -2	Z62NS	-1 / -	2	✓ Closing fragment
11-01 23:19	80m	- / -12	4Z5NN	-8 / -	2	✓ Closing fragment
09-16 22:04	40m	+1 / -	LU8FAU	- / -13	3	Partial capture
09-16 22:02	40m	+3 / -1	DL9KM	-15 / +5	3	✓ Full exchange observed
09-16 21:58	40m	-4 / -	BG4UWQ	- / -8	2	✓ Closing fragment
09-16 21:56	40m	-7 / +1	HB9CNU	-15 / -	4	✓ Closing observed
09-16 21:53	40m	-9 / -	BG7BVP	- / -4	2	✓ Closing fragment
09-16 21:47	40m	+12 / -	KP4QVQ	- / -13	3	✓ Closing fragment
09-16 21:45	40m	+7 / -	PY2DPM	- / -9	2	✓ Closing fragment
09-16 21:44	40m	+2 / -	SP9JCN	- / +2	2	✓ Closing fragment
09-16 21:37	40m	+6 / -	YO5IM	- / -2	2	✓ Closing fragment
09-16 21:36	40m	- / -	F4HJG	0 / -	2	Partial capture
09-16 21:33	40m	+8 / -	OZ1LGJ	-10 / +10	4	✓ Closing observed
09-16 21:23	40m	-4 / -	PY7BC	- / -	6	Partial capture
09-16 21:22	40m	-4 / -	VJ6X	- / -4	2	✓ Closing fragment
09-16 21:19	40m	-6 / -	BI8AWT	- / -	3	Partial capture
09-16 21:17	40m	-3 / -	R3AP	- / -3	3	✓ Closing fragment
09-15 21:15	40m	0 / -8	R5AV	-4 / -5	3	✓ Full exchange observed
09-15 21:12	40m	+2 / -	DC9GT	- / -16	2	✓ Closing fragment
09-15 21:11	40m	0 / -8	IK4TVP	-2 / -3	4	✓ Full exchange observed
09-15 21:08	40m	-1 / -	UN7PPV	- / -24	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
233115 -13 2554  F4FCH 9A2WA R-16
233130  -2 1618  F4NJU F4FCH -21
233145 -10 2244  F4FCH OM1AGE JN88
233145 -16 2555  F4FCH 9A2WA R-16
233200  -2 1618  F4NJU F4FCH RR73
233230  -6 1618  9A2WA F4FCH RR73
233300  -2 1618  UT4TA F4FCH -02 (x2)
233345  +5 2321  F4FCH UT4TA R-11
233400  -5 1618  UT4TA F4FCH -02
233615  -7 2244  F4FCH OM1AGE JN88
233645  +0 2321  F4FCH UT4TA R-13
233800  -4 1618  VO1HP F4FCH JN16 (x3)

40m

UTC    dB Audio  Message
215700 -11 2282  BD4VOJ F4FCH RR73
215815 -14 2282  F4FCH HB9CNU R+01
215830 -12 2282  BG4UWQ F4FCH R-08
215900  -7 2282  HB9CNU F4FCH RR73
215930  +4 2282  BG4UWQ F4FCH 73
220030  +0 2282  CQ F4FCH JN16                         a1 (x3)
220200  +3 2282  DL9KM F4FCH +05
220215 -15 1489  F4FCH DL9KM R-01
220230  +3 2282  DL9KM F4FCH RR73
220330  -3 2282  BU2FW F4FCH JN16
220430  +1 2282  LU8FAU F4FCH -13 (x3)

20m

UTC    dB Audio  Message
202430  -8 1667  AB9PM F4FCH JN16

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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