W4RXK — 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: EM74

Receiver-side FT8 activity involving W4RXK, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-08-16.

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 22 FT8 messages attributed to W4RXK as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (95%), followed by 80 m (5%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (73%); the estimated median was -19 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-19 dB

Estimated median S/N

Bands

80m · 1 20m · 21

First attributed message: 2026-06-08
Last attributed message: 2026-08-16 02:14 UTC

Observed FT8 message patterns

Attributed sample: 22 messages
Active dates: 6 UTC dates
Estimated median S/N: -19 dB
Estimated 10th-90th percentile: -21 to -15 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 16, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 0.

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 W4RXK in decoded directed-looking exchanges:

CT2IGO · Portugal ×2 LZ1KU · Bulgaria ×2 DM2AB · Fed. Rep. of Germany F4GVO · France F4IFO · France HZ1TT · Saudi Arabia IT9ELM · Sicily M0ILT · England RD9U · Asiatic Russia VE9LZ · Canada GB8VJ · England F5UKW · France

Most frequent locator attributed to W4RXK

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: EM74 · 16 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,198 km (approx.)
Last such locator decoded: 2026-08-16 02:14 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	W4RXK S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 01:56	80m	- / -25	F4CTJ	0 / -	2	Partial capture
10-30 01:52	80m	- / -11	LZ1KU	+11 / -	2	✓ Closing fragment
10-28 01:26	80m	- / -11	LZ1KU	+4 / -	2	Partial capture
10-22 01:19	60m	- / -16	ON1JP	-13 / -	8	Partial capture
10-06 01:17	80m	- / -	UX5UO	+12 / -	3	Partial capture
10-05 00:20	40m	- / -14	F4GVO	+10 / -	2	✓ Closing fragment
10-02 00:45	80m	- / -24	LY5A	+10 / -	2	✓ Closing fragment
09-25 00:14	80m	- / 0	5B4AMM	+12 / -	5	Partial capture
09-17 00:24	80m	- / -22	LZ1KU	+14 / -	2	Partial capture
09-16 01:03	80m	- / -19	F5UKW	+14 / -	2	✓ Closing fragment
09-12 01:03	40m	- / -24	HZ1TT	-10 / -	3	✓ Closing fragment
08-28 00:43	80m	- / -22	LZ1KU	+18 / -	2	✓ Closing fragment
08-25 01:05	40m	- / -13	M0ILT	-10 / -	2	✓ Closing fragment
08-22 02:29	80m	- / -25	SP6JIU	+25 / -	3	Partial capture
08-21 23:58	40m	- / -	CT2IGO	-14 / -	7	✓ Closing fragment
08-21 23:51	40m	- / -19	CT2IGO	-12 / -	2	Partial capture
08-21 00:25	20m	- / -19	PY6HD	0 / -	2	Partial capture
08-19 01:15	40m	- / -	F5NBU	+6 / -	4	Partial capture
08-16 02:12	80m	- / -18	RA2FCF	-8 / -	4	✓ Closing fragment
08-16 01:56	40m	- / -12	F4IFO	-8 / -	3	✓ Closing fragment
08-11 00:57	80m	- / -	UR5EDX	+10 / -	7	Partial capture
08-10 01:14	80m	- / -18	SP1MGM	+19 / -	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
001515 +13 1044  W4RXK 5B4AMM -05 (x4)
004530  +9  797  W4RXK LY5A -24 (x2)
011745 +11 1132  W4RXK UX5UO KO50 (x3)
012600  +4 1466  W4RXK LZ1KU -11 (x4)
015600  -1 1009  W4RXK F4CTJ -25 (x2)

60m

UTC    dB Audio  Message
015100 -15  929  W4RXK GB8VJ RR73
011915 -18 1345  W4RXK ON1JP -16 (x8)

40m

UTC    dB Audio  Message
235930 -16 1552  W4RXK CT2IGO RR73 (x4)
010500 -10 1783  W4RXK M0ILT -13 (x2)
000945  -1 2979  W4RXK RD9U RR73
010330  -7 1729  W4RXK HZ1TT -24 (x3)
002930 -24 1668  W4RXK IT9ELM RR73
002015 +15 2893  W4RXK F4GVO -14 (x2)
012015 +19 2547  W4RXK F5NBU JN28
005930 -16 2559  W4RXK VE9LZ RR73

20m

UTC    dB Audio  Message
002545  +1 2175  W4RXK PY6HD -19 (x2)
235745 -23 1775  W4RXK 9Y4DG -12

CW

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

Explore CW reception at SO8OO

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