N4CHL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL87

Receiver-side FT8 activity involving N4CHL, decoded by SO8OO in southeastern Poland. 2 FT8 messages attributed to this token as transmitter, on 80m, 60m, across 2 UTC dates in the available aggregate history. Observed between 2026-09-02 and 2026-09-15.

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 2 FT8 messages attributed to N4CHL as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The available sample contains attributed decodes on 80 m (50%) and 60 m (50%). The sample is too small to infer a recurring UTC-hour or received-S/N pattern.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

S/N pattern not inferred

Bands

80m · 1 60m · 1

First attributed message: 2026-09-02
Last attributed message: 2026-09-15 03:13 UTC

Observed FT8 message patterns

Attributed sample: 2 messages
Active dates: 2 UTC dates
S/N summary: Too few decodes
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

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 N4CHL in decoded directed-looking exchanges:

HI3JCC · Dominican Republic HI3QMT · Dominican Republic LZ7VV · Bulgaria PV8AJ · Brazil EA1IOK · Spain EA3HMM · Spain EA6NB · Balearic Islands F5RMK · France HB9SNR · Switzerland IK4PLW · Italy ON7GB · Belgium K4JJQ · United States

Most frequent locator attributed to N4CHL

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: EL87
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,675 km (approx.)
Last such locator decoded: 2026-09-15 03:13 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	N4CHL S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-22 04:26	60m	- / -	SP7NC	+9 / -	5	Partial capture
09-22 04:12	40m	- / -5	DK7ZT	-4 / -	2	Partial capture
09-22 04:07	40m	- / -	F5PBG	0 / -	2	Partial capture
09-22 04:07	40m	- / -	K2FDM	-6 / -	4	Partial capture
09-19 04:10	60m	- / -	IK4CBO	-5 / -	2	Partial capture
09-19 04:08	60m	- / -	IW9FRA	-11 / -	10	Partial capture
09-19 04:07	60m	- / -	LZ2VQ	+5 / -	3	Partial capture
09-19 04:06	60m	- / -11	EA6NB	-2 / -	2	✓ Closing fragment
09-19 04:06	60m	- / -	DB3ZY	+1 / -	8	Partial capture
09-19 04:06	60m	- / -5	HB9ALO	-3 / -	3	Partial capture
09-19 04:05	60m	- / -	IK4CBO	-6 / -	2	Partial capture
09-19 04:05	60m	- / -	ON8BB	+1 / -	9	Partial capture
09-19 04:05	60m	- / -	S57MPU	+5 / -	8	Partial capture
09-19 04:00	60m	- / -	EA1IOK	0 / -	6	✓ Closing fragment
09-19 04:00	60m	- / -	ON8BB	+1 / -	6	Partial capture
09-19 03:59	60m	- / -	IK4CBO	-2 / -	6	Partial capture
09-18 02:55	80m	- / -13	UT5ZC	+13 / -	4	✓ Closing fragment
09-15 03:27	60m	- / -6	DH3KR	-3 / -	6	Partial capture
09-15 03:25	60m	- / -	DK5WL	+4 / -	3	Partial capture
09-15 03:24	60m	- / -	EA1IOK	-3 / -	5	Partial capture
09-15 03:22	60m	- / +4	HB9SNR	+5 / -	6	✓ Closing fragment
09-15 03:20	60m	- / -	DK5WL	-1 / -	3	Partial capture
09-15 03:16	60m	- / 0	ON7GB	+9 / -	8	✓ Closing fragment
09-15 03:16	60m	- / -8	IK4PLW	-6 / -	2	✓ Closing fragment
09-15 03:13	60m	-21 / -2	F5RMK	-12 / -	3	✓ Closing observed
09-15 03:08	60m	- / -	ON7GB	+10 / -	4	Partial capture
09-13 03:59	40m	- / -	EB3JT	-2 / -	7	Partial capture
09-09 02:03	40m	- / -15	HI3JCC	-16 / -	2	✓ Closing fragment
09-08 03:06	40m	- / -24	LZ7VV	+13 / -	2	Partial capture
09-02 04:08	80m	- / -	SP1TJ	-2 / -	3	Partial capture
09-02 03:37	80m	- / -	OK1XV	+8 / -	5	Partial capture
09-02 03:36	80m	-21 / -3	K4JJQ	-22 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
041030  +3 2462  N4CHL ON8BB JO21
041030  -7 1857  N4CHL IK4CBO JN54
041030  -2 1076  N4CHL DB3ZY JO40
041100  -1 2462  N4CHL ON8BB JO21
041100 -12 1135  N4CHL IW9FRA JM68
041100  +1 1076  N4CHL DB3ZY JO40
041130 -12 1135  N4CHL IW9FRA JM68 (x4)
042645  +7  633  N4CHL SP7NC JO91 (x5)

40m

UTC    dB Audio  Message
040200  +2  848  N4CHL EB3JT JN01
040230  -9 1283  N4CHL MI7XHT IO64
040230  -1  848  N4CHL EB3JT JN01
042600 -13  840  N4CHL MI7XHT IO64 (x2)
045115  -5 1260  N4CHL F5PBG IN78
045515  +5 1907  N4CHL DK7ZT -09
040715  -7 2956  N4CHL K2FDM EN81
040745  -1  640  N4CHL F5PBG IN78
040815  -6 2956  N4CHL K2FDM EN81
040815  +2  640  N4CHL F5PBG IN78
040845  -6 2956  N4CHL K2FDM EN81 (x2)
041215  -4 1906  N4CHL DK7ZT -05 (x2)

80m

UTC    dB Audio  Message
033615 -20  601  N4CHL K4JJQ -03 (x2)
033700 -21  599  K4JJQ N4CHL 73
033745  +6 1672  N4CHL OK1XV JN79 (x5)
040800  -2 1083  N4CHL SP1TJ JO74 (x3)
025500 +13 1473  N4CHL UT5ZC -13 (x4)

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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