WF4DX — 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: United States Most frequent locator attributed to this token: EL89

Receiver-side FT8 activity involving WF4DX, decoded by SO8OO in southeastern Poland. 65 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-15.

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 65 FT8 messages attributed to WF4DX as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (42%), followed by 20 m (26%) and 40 m (25%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 27 60m · 5 40m · 16 20m · 17

First attributed message: 2026-06-07
Last attributed message: 2026-10-15 22:55 UTC

Observed FT8 message patterns

Attributed sample: 65 messages
Active dates: 12 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -21 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 23, strong (≥ -8 dB) 22.

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 WF4DX in decoded directed-looking exchanges:

HA7TM · Hungary HB9CXZ · Switzerland OH6RX · Finland 9K2GR · Kuwait A99AA · Bahrain Z31B · North Macedonia IT9JNR · Sicily CT7AUT · Portugal DL1RNW · Fed. Rep. of Germany EC3A · Spain ER3ZW · Moldova F6DZU · France

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 WF4DX

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: EL89 · 45 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,504 km (approx.)
Last such locator decoded: 2026-10-15 22:55 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	WF4DX S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 03:04	160m	- / -	HB9HVG	-5 / -	4	Partial capture
10-22 03:03	160m	- / -11	HB9CXZ	+8 / -	2	✓ Closing fragment
10-15 22:53	40m	-18 / -	EP2AES	- / -	3	Partial capture
10-12 00:39	80m	- / -17	EC3A	-8 / -	3	✓ Closing fragment
10-12 00:37	80m	- / -	UN2G	-23 / -	2	Partial capture
10-12 00:36	80m	- / -20	GI4SNA	+4 / -	2	✓ Closing fragment
10-11 01:30	160m	- / -15	HA7TM	+19 / -	2	✓ Closing fragment
10-11 01:17	60m	-12 / -	9T0MD	- / -	3	Partial capture
10-11 01:14	60m	- / -	EB3JT	+12 / -	7	Partial capture
10-11 01:13	60m	-17 / -	IT9JNR	- / +1	2	✓ Closing fragment
10-10 23:53	80m	- / -17	CT7AUT	-6 / -	4	✓ Closing fragment
10-08 05:41	80m	- / -11	ON7GB	+11 / -	5	✓ Closing fragment
10-08 05:40	80m	- / -14	MI0NWA	-8 / -	2	✓ Closing fragment
10-08 05:38	80m	- / -	EA7ALL	-18 / -	5	Partial capture
10-08 05:36	80m	- / -	F5RAV	-10 / -	4	Partial capture
10-08 05:36	80m	- / -	SP6FME	+16 / -	2	Partial capture
10-08 05:34	80m	- / -21	F6DZU	-3 / -	5	✓ Closing fragment
10-08 05:32	80m	- / +1	OH5LF	+10 / -	6	Partial capture
10-08 05:31	80m	- / -25	IK5CHL	-9 / -	5	✓ Closing fragment
10-08 05:30	80m	- / -15	MI0NWA	-8 / -	11	Partial capture
10-08 05:06	80m	-13 / -16	SM3PZG	-20 / -	3	✓ Closing observed
10-08 05:03	80m	- / -14	IU5LQC	-10 / -	3	✓ Closing fragment
10-08 05:02	80m	- / -	F4IIX	-4 / -	3	Partial capture
10-08 05:00	80m	- / -	HB9CEV	-5 / -	3	Partial capture
10-08 04:59	80m	- / -5	DL1RNW	+9 / -	6	✓ Closing fragment
10-08 04:59	80m	-19 / -16	OK1FCR	+17 / -13	5	✓ Full exchange observed
09-25 02:50	40m	- / -	EB3JT	+7 / -	7	Partial capture
09-19 23:14	80m	- / -19	PI4DX	+4 / -	2	✓ Closing fragment
09-03 23:36	40m	- / -	LZ2VQ	-11 / -	3	Partial capture
09-03 23:35	40m	-13 / -	Z31B	-14 / -1	3	✓ Closing observed
09-03 23:13	40m	- / -	PE1NPS	+4 / -	2	Partial capture
09-01 02:41	40m	-12 / -	RI1FJL	- / -	2	Partial capture
09-01 02:03	40m	-9 / -	RI1FJL	- / -	3	Partial capture
09-01 01:41	40m	-15 / -	RI1FJL	- / -	3	Partial capture
08-30 03:05	40m	- / -	YO4GIY	-15 / -	4	Partial capture
08-20 00:42	80m	-14 / -	OJ0YL	- / -	4	Partial capture
08-18 08:27	10m	- / -	IW8XLD	-14 / -	6	Partial capture
08-17 00:42	80m	-14 / -14	SP6JIU	+23 / -	3	✓ Closing observed
08-11 01:14	80m	- / -	SP1MGM	0 / -	2	Partial capture
08-11 00:32	80m	- / -	SP1MGM	+4 / -	3	Partial capture
08-11 00:29	80m	- / -	SP1MGM	+5 / -	2	Partial capture
08-08 01:36	40m	- / -	RN6HK	+3 / -	2	Partial capture
08-08 01:34	40m	- / -2	9K2GR	-14 / -	3	✓ Closing fragment
08-06 01:06	80m	-20 / -16	DO9BAU	+5 / -19	19	Partial capture
08-06 01:04	80m	- / -	HB9CXZ	+4 / -	2	Partial capture
08-06 01:03	80m	- / -	DK5WL	-8 / -	3	Partial capture
08-06 01:03	80m	- / -	DO9BAU	+6 / -	2	Partial capture
08-06 01:03	80m	- / -	RC6OD	+4 / -	2	Partial capture
08-06 01:03	80m	-14 / -16	YT3PL	+7 / -	4	✓ Closing observed
08-06 01:01	80m	-16 / -21	ER3ZW	+10 / -13	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
013045 +20  543  WF4DX HA7TM -15 (x2)
004130 +15 2457  WF4DX OH6RX RR73
030330  +9 2187  WF4DX HB9CXZ -11 (x2)
030430  -2 2294  WF4DX HB9HVG JN36 (x4)

40m

UTC    dB Audio  Message
233630  -9 2151  WF4DX LZ2VQ KN23 (x3)
235045  -3  572  <...> WF4DX R-17
025015  -9  315  A99AA WF4DX 73
025030  +6  314  WF4DX EB3JT JN01 (x7)
225315 -23 1382  EP2AES WF4DX EL89 (x3)

80m

UTC    dB Audio  Message
230200 -16  493  TA3GO WF4DX EL89
234915 -16 2525  UT5EL WF4DX EL89 (x2)
235330  -6 1441  WF4DX CT7AUT IM67 (x4)
010400  -6  570  4X6ZK WF4DX EL89
003600  +3 1606  WF4DX GI4SNA -20 (x2)
003730 -22 1897  WF4DX UN2G MN83 (x2)
003930 -10 1223  WF4DX EC3A -17 (x3)

60m

UTC    dB Audio  Message
011345 -17 1112  IT9JNR WF4DX R+01 (x2)
011430  +6 2832  WF4DX EB3JT JN01 (x7)
011745 -10  849  9T0MD WF4DX EL89 (x3)

10m

UTC    dB Audio  Message
082715 -16 1057  WF4DX IW8XLD JN71 (x7)

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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