W4FZ — 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: FM18

Receiver-side FT8 activity involving W4FZ, decoded by SO8OO in southeastern Poland. 230 FT8 messages attributed to this token as transmitter, on 80m, 60m, 20m, across 13 UTC dates in the available aggregate history. Observed between 2026-08-19 and 2026-09-30.

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 230 FT8 messages attributed to W4FZ as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (96%), followed by 60 m (2%) and 20 m (2%). Most decodes (100%) fell within the six-hour window 21:00-03:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14.2 dB.

Overview

230

Messages attributed

UTC dates decoded

Active 15-min windows

-14.2 dB

Estimated median S/N

Bands

80m · 220 60m · 5 20m · 5

First attributed message: 2026-08-19
Last attributed message: 2026-09-30 23:18 UTC

Observed FT8 message patterns

Attributed sample: 230 messages
Active dates: 13 UTC dates
Estimated median S/N: -14.2 dB
Estimated 10th-90th percentile: -24 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 99, moderate (-15 to -9 dB) 80, strong (≥ -8 dB) 51.

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 W4FZ in decoded directed-looking exchanges:

F1TXI · France ×2 DO1ID · Fed. Rep. of Germany ×2 SV8JE · Greece ×2 M7LYG · England OY1HJ · Faroe Islands F5PBG · France CT7ARQ · Portugal DH3KR · Fed. Rep. of Germany EI4DQ · Ireland ER3ZW · Moldova F1IQH · France YO2MAX · Romania

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 W4FZ

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: FM18 · 71 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,390 km (approx.)
Last such locator decoded: 2026-09-02 00:48 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	W4FZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-30 23:18	80m	-14 / -12	DO1KRT	+8 / -	3	✓ Closing observed
09-30 22:26	80m	- / -2	EA8UP	-8 / -	2	✓ Closing fragment
09-30 02:19	80m	- / -9	F1TXI	+8 / -	2	✓ Closing fragment
09-30 02:16	60m	- / -2	DH3KR	-1 / -	2	✓ Closing fragment
09-30 01:56	60m	- / -1	F1TXI	-4 / -	2	✓ Closing fragment
09-30 01:51	60m	-13 / -6	YO2MAX	0 / -5	5	✓ Full exchange observed
09-29 22:36	80m	- / -21	OK1XV	+14 / -	6	✓ Closing fragment
09-26 02:19	80m	- / -16	SQ100PKP	+2 / -	3	Partial capture
09-26 02:14	80m	- / -12	IZ8VYU	-1 / -	2	✓ Closing fragment
09-25 02:49	80m	-2 / -12	S57TW	+2 / -	3	✓ Closing observed
09-25 02:45	80m	- / -19	DO8JB	-5 / -	5	✓ Closing fragment
09-25 02:44	80m	-6 / -13	Z62NS	-4 / -12	4	✓ Full exchange observed
09-19 01:50	60m	- / -17	CT7ARQ	-18 / -	2	✓ Closing fragment
09-19 01:49	60m	- / -2	OS4K	-24 / -	2	Partial capture
09-12 02:52	80m	-12 / -	HI3JCC	- / -10	2	✓ Closing fragment
09-12 02:52	80m	-11 / -	IZ2AMW	-9 / -17	4	✓ Closing observed
09-09 01:42	60m	- / -11	F1IQH	-10 / -	2	✓ Closing fragment
09-09 01:22	80m	-10 / -19	G0OYQ	-4 / -	3	✓ Closing observed
09-09 01:17	80m	- / -	UA4FKT	+8 / -	3	Partial capture
09-09 01:16	80m	- / -13	ON3ANY	+2 / -	4	✓ Closing fragment
09-02 01:14	80m	-13 / -	RI1FJL	- / -8	3	Partial capture
09-02 01:06	80m	-19 / -	RI1FJL	- / -8	2	Partial capture
09-02 00:52	80m	-15 / -	RI1FJL	- / -12	10	Partial capture
09-02 00:48	80m	-16 / -	VA3PHP	- / -14	2	✓ Closing fragment
09-02 00:47	80m	-16 / -	D44TWO	- / -18	2	✓ Closing fragment
09-02 00:35	80m	- / -	SM3ULU	+4 / -	2	Partial capture
09-02 00:34	80m	- / -11	PE1MHY	-2 / -	4	Partial capture
09-02 00:26	80m	- / -12	OH2ZZ	+7 / -	2	Partial capture
09-02 00:26	80m	- / -	SM3ULU	0 / -	3	Partial capture
09-02 00:22	80m	- / -7	PE1MHY	-5 / -	4	Partial capture
09-02 00:17	80m	- / -	OH6Z	-3 / -	2	Partial capture
09-02 00:16	80m	- / -	SM3ULU	-2 / -	3	Partial capture
09-02 00:12	80m	- / -	SM3ULU	+6 / -	2	Partial capture
09-02 00:11	80m	- / -11	PE1MHY	-2 / -	4	Partial capture
09-02 00:09	80m	- / -	DL1UDO	0 / -	3	Partial capture
09-02 00:07	80m	- / -	SM3ULU	+5 / -	3	Partial capture
09-02 00:04	80m	- / -12	ON1JP	-16 / -	5	Partial capture
09-02 00:01	80m	- / -	SP5LST	+14 / -	2	Partial capture
09-01 23:59	80m	- / -12	PE1MHY	-8 / -	6	Partial capture
09-01 23:58	80m	- / -	DF3YG	-2 / -	5	Partial capture
09-01 23:58	80m	- / -	DO2WJ	-16 / -	2	Partial capture
09-01 23:58	80m	- / -	SM3ULU	-2 / -	3	Partial capture
09-01 23:55	80m	- / -	OE3OOG	+2 / -	2	Partial capture
09-01 23:54	80m	- / -	SE3X	-11 / -	5	Partial capture
09-01 23:53	80m	- / -	DF3YG	-1 / -	6	Partial capture
09-01 23:53	80m	- / -	SM3ULU	-2 / -	2	Partial capture
09-01 23:53	80m	- / -11	PE1MHY	-8 / -	5	Partial capture
09-01 23:52	80m	- / -	G1VHD	-24 / -	3	Partial capture
09-01 23:51	80m	- / -16	EW6BZ	+3 / -	12	Partial capture
09-01 23:50	80m	-14 / -18	DK9WI	+9 / -18	7	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
014945 -23 1779  W4FZ OS4K -02 (x2)
015015 -19 1456  W4FZ CT7ARQ R-17 (x2)
214545 -15  987  W4FZ VE1YX FN74
015145 -12  605  YO2MAX W4FZ -05 (x2)
015300  +1 1224  W4FZ YO2MAX R-06
015315 -14  606  YO2MAX W4FZ RR73
015330  -1 1224  W4FZ YO2MAX 73
015600  -1 1633  W4FZ F1TXI R-01 (x2)
021630  -1 1533  W4FZ DH3KR R-02 (x2)
225100 -16 1191  W4FZ EI4DQ RR73

80m

UTC    dB Audio  Message
022030  +4 1108  W4FZ SQ100PKP R-02
223630 +17 1897  W4FZ OK1XV JN79 (x3)
223730 -15 1226  W4FZ EC3A JN00
223800 +12 1897  W4FZ OK1XV JN79 (x3)
021915  +8 1809  W4FZ F1TXI R-09 (x2)
222645  -7 2610  W4FZ EA8UP R-02 (x2)
231830 +10 2600  W4FZ DO1KRT R-12
231845 -14  569  DO1KRT W4FZ RR73
231900  +6 2600  W4FZ DO1KRT 73

40m

UTC    dB Audio  Message
014900  +1 2844  W4FZ F5PBG IN78 (x5)

20m

UTC    dB Audio  Message
222300 -13 1931  OY1HJ W4FZ R-11 (x2)
222430 -13 1931  M7LYG W4FZ RR73
203715 -13 2618  RI1FJL W4FZ FM18 (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

CW history is temporarily unavailable.

Explore CW reception at SO8OO

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