RW4Z — 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: European Russia Most frequent locator attributed to this token: LO36

Receiver-side FT8 activity involving RW4Z, decoded by SO8OO in southeastern Poland. 332 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 41 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-10-21.

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 332 FT8 messages attributed to RW4Z as the transmitting token by decoded message structure across 41 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 20 m (41%). Most decodes (69%) fell within the six-hour window 13:00-19:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

332

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

40m · 196 20m · 136

First attributed message: 2026-06-11
Last attributed message: 2026-10-21 18:51 UTC

Observed FT8 message patterns

Attributed sample: 332 messages
Active dates: 41 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -21 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 95, moderate (-15 to -9 dB) 152, strong (≥ -8 dB) 85.

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 RW4Z in decoded directed-looking exchanges:

RD7LC · European Russia ×2 R3KHR · European Russia ×2 UA1RC · European Russia ×2 R2EA · European Russia R3KLE · European Russia R6KA · European Russia 4X1YA · Israel F4IVG · France F5RBV · France IU3GOR · Italy JO4JDU · Japan M9KJY · England

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 RW4Z

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: LO36
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,817 km (approx.)
Last such locator decoded: 2026-08-27 13:39 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	RW4Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 18:51	40m	-4 / -	YT2YZ	- / -8	2	Partial capture
10-21 18:38	40m	-12 / -	YO7LMU	- / -1	2	Partial capture
10-21 18:35	40m	-7 / -11	IK4RVY	0 / -6	12	✓ Full exchange observed
10-21 18:33	40m	-12 / -	HF5W	- / -6	2	Partial capture
10-21 18:29	40m	-12 / -	ER3UA	- / -5	6	Partial capture
10-21 18:26	40m	-7 / -	SP5OO	- / -7	3	✓ Closing fragment
10-21 18:24	40m	- / -1	YO4CVV	-3 / -	3	✓ Closing fragment
10-21 18:20	40m	-8 / -	YO4CVV	- / -6	2	Partial capture
10-20 15:02	40m	-16 / -	RY9W	- / -10	5	Partial capture
10-20 14:59	40m	-16 / +2	RA1TL	-4 / 0	7	✓ Full exchange observed
10-18 12:54	40m	- / -1	EU1AFX	-5 / -	5	Partial capture
10-14 16:01	40m	-12 / -	BG0FQU	- / -13	2	Partial capture
10-14 15:58	40m	- / -18	R4CHN	-8 / -	2	Partial capture
10-14 15:53	40m	-13 / -13	IZ3EAW	-3 / -12	6	✓ Full exchange observed
10-14 15:52	40m	- / -11	RC6OX	0 / -	2	✓ Closing fragment
10-10 15:11	40m	-21 / -8	UA1AEL	-8 / -2	5	✓ Full exchange observed
10-10 10:50	40m	- / -	EU2ABM	-13 / -	2	Partial capture
10-06 17:19	40m	- / -	RD3FY	-6 / -	4	Partial capture
10-06 17:18	40m	- / -4	R3DMS	+3 / -	3	Partial capture
10-06 17:01	40m	-16 / -	R3CE	-20 / -13	3	Partial capture
10-06 17:01	40m	- / -8	DK5WL	0 / -	2	✓ Closing fragment
10-06 16:58	40m	- / +1	OZ1A	-11 / -	3	Partial capture
10-06 16:56	40m	-14 / -	R4CI	- / -5	2	Partial capture
10-05 17:18	40m	-13 / -	HF1Z	- / -8	3	Partial capture
10-05 17:12	40m	- / -	EW4DX	-2 / -	4	Partial capture
10-05 17:12	40m	- / -6	DL6MRS	+11 / -	3	Partial capture
10-05 17:07	40m	-12 / -8	SQ5ANT	+13 / 0	3	Partial capture
10-05 17:03	40m	-10 / -2	OH5KNL	+10 / 0	5	✓ Full exchange observed
10-05 13:10	40m	- / -1	YL3CW	-9 / -	3	✓ Closing fragment
10-05 13:06	40m	-19 / -	RY2B	-20 / -	3	✓ Closing observed
10-01 18:43	40m	- / -2	G7NUT	-5 / -	3	✓ Closing fragment
10-01 18:39	40m	-11 / -3	U1BD	-6 / 0	10	✓ Full exchange observed
10-01 18:36	40m	-9 / -	EU1CZ	- / -6	3	✓ Closing fragment
10-01 18:34	40m	-9 / -	YO4LUP	- / -6	2	Partial capture
10-01 17:25	40m	-13 / -7	YO9IJP	+4 / +1	5	Partial capture
10-01 16:56	40m	- / -7	R2HD	0 / -	2	Partial capture
09-29 14:48	40m	- / -1	RD7LC	-12 / -	3	✓ Closing fragment
09-29 14:40	40m	-23 / -	R8CKD	- / +4	2	✓ Closing fragment
09-27 13:23	40m	- / +1	EU1AFX	-13 / -	2	Partial capture
09-25 17:27	40m	-17 / +10	PI4DX	+12 / +4	4	✓ Full exchange observed
09-25 17:23	40m	- / -	IU4PPL	-11 / -	2	Partial capture
09-25 17:21	40m	- / -	RD3FY	-1 / -	3	Partial capture
09-21 16:43	40m	-8 / -	RA9SJG	-12 / -19	4	✓ Closing observed
09-21 16:40	40m	-10 / +5	EW7LZ	-6 / 0	4	✓ Full exchange observed
09-21 16:37	40m	-10 / -20	DL5MO	-1 / -15	4	✓ Full exchange observed
09-21 16:37	40m	- / -10	RO7A	+1 / -	2	Partial capture
09-21 16:25	40m	-8 / +10	UA3AGW	+1 / -	9	✓ Full exchange observed
09-21 16:23	40m	-8 / -	RA4ADF	- / -	2	✓ Closing fragment
09-12 16:19	40m	-8 / -15	R2DDA	-4 / -	2	✓ Closing observed
09-12 16:14	40m	-6 / -14	RZ7KR	-1 / -8	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
183615  +3 1999  RW4Z IK4RVY R-11
183630  -8 1997  IK4RVY RW4Z 73
183645  +4 1999  RW4Z IK4RVY R-11 (x3)
183800 -10 1999  IK4RVY RW4Z 73
183815  -4 2000  RW4Z IK4RVY R-11
183830 -12 1639  YO7LMU RW4Z -01
183845  +1 2000  RW4Z IK4RVY R-11
183900 -13 1639  YO7LMU RW4Z -01
183915  +1 2000  RW4Z IK4RVY R-11
184830  -5 1830  YO7LMU RW4Z -02
185000  -9 1748  UA1CEI RW4Z -10
185100  -3 1801  YT2YZ RW4Z -08 (x2)

20m

UTC    dB Audio  Message
134830  -1 1776  VE7ON RW4Z 73
134900  -3 1733  SI9YL RW4Z -17
125745 -10 1628  RW4Z RY7G R-06
125900  -6 1630  RY7G RW4Z 73
130030  -8 1903  JA4IXI RW4Z -14
130100  -6 1576  G0VXM RW4Z -16 (x2)
130300  +0 1783  M8FQT RW4Z -14
130415  -9 1284  RW4Z M8FQT R-22 (x7)

10m

UTC    dB Audio  Message
103230  +0 2807  RW4Z 9J2FI R-18
061745  -5 2139  RW4Z R2EA R-10 (x2)
063300  -8 2311  RW4Z R3KLE R+01 (x2)
063930 -24 1902  RW4Z RA7T R-03
064215 -16 1797  RW4Z R6KA R+18 (x2)
064445 -11  542  RW4Z UN7AM R-03
064615 -15 2042  RW4Z UA3WG R+05
064645 -16 1796  RW4Z R6KA 73
071715 -17 2239  RW4Z RD7LC R-01 (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.

CW

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

Explore CW reception at SO8OO

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