W4YRL — 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: EL99

Receiver-side FT8 activity involving W4YRL, decoded by SO8OO in southeastern Poland. 13 FT8 messages attributed to this token as transmitter, on 40m, across 4 UTC dates in the available aggregate history. Observed between 2026-08-20 and 2026-09-19.

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 13 FT8 messages attributed to W4YRL as the transmitting token by decoded message structure across 4 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -14 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-14 dB

Estimated median S/N

Bands

40m · 13

First attributed message: 2026-08-20
Last attributed message: 2026-09-19 01:37 UTC

Observed FT8 message patterns

Attributed sample: 13 messages
Active dates: 4 UTC dates
Estimated median S/N: -14 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 7, strong (≥ -8 dB) 1.

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 W4YRL in decoded directed-looking exchanges:

4X1UF · Israel CT2HEX · Portugal DK7ZT · Fed. Rep. of Germany G3VCQ · England GJ0KYZ · Jersey OO0O · Belgium

Most frequent locator attributed to W4YRL

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: EL99 · 10 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,379 km (approx.)
Last such locator decoded: 2026-09-19 01:37 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	W4YRL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-25 08:07	40m	- / -12	MM7SXM	-11 / -	2	Partial capture
10-09 02:55	40m	- / -20	IT9ODQ	-12 / -	5	Partial capture
09-22 06:50	40m	- / -19	DK7ZT	-6 / -	3	✓ Closing fragment
09-22 06:48	40m	- / -9	GJ0KYZ	-9 / -	2	Partial capture
09-22 06:47	40m	- / -19	F8MRQ	-10 / -	2	Partial capture
09-19 01:40	40m	- / -19	4X1UF	-12 / -	2	✓ Closing fragment
09-19 01:36	40m	-16 / -	K6DAV	- / -	2	Partial capture
09-19 01:19	40m	- / -8	CT2HEX	-10 / -	4	✓ Closing fragment
09-07 01:27	40m	-20 / -19	DJ9FBA	+5 / -	4	Partial capture
09-07 01:25	40m	- / -15	G3VCQ	-13 / -	2	✓ Closing fragment
09-07 01:24	40m	- / +2	DK7ZT	-16 / -	2	Partial capture
09-07 01:22	40m	- / -19	MI7XHT	-13 / -	2	Partial capture
09-07 01:20	40m	-8 / -14	OO0O	-6 / -24	6	✓ Full exchange observed
09-07 01:15	40m	-14 / -16	UI6O	0 / -	2	Partial capture
09-07 01:10	40m	-12 / -15	SQ8NA	-14 / -19	6	Partial capture
08-31 03:19	40m	- / -	G5TV	-9 / -	6	Partial capture
08-31 02:51	40m	- / -11	EC5M	-16 / -	2	Partial capture
08-31 02:36	40m	- / -14	HB10GBT	-11 / -	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
064745 -13 2264  W4YRL F8MRQ R-19
064815  -8 2264  W4YRL GJ0KYZ -09 (x2)
065015  -9 1906  W4YRL DK7ZT -19
065115 -11 1083  W4YRL GJ0KYZ RR73
065145  -2 1906  W4YRL DK7ZT -19 (x2)
073445 -19 2014  W4YRL F5PBG IN78
025515 -11 1139  W4YRL IT9ODQ JM76 (x5)
080715 -13  607  W4YRL MM7SXM -12 (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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