RA4FW — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO23

Receiver-side FT8 activity involving RA4FW, decoded by SO8OO in southeastern Poland. 847 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 16 UTC dates in the available aggregate history. Observed between 2026-07-17 and 2026-08-01.

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 847 FT8 messages attributed to RA4FW as the transmitting token by decoded message structure across 16 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 80 m (18%) and 20 m (7%). The busiest six-hour window was 16:00-22:00 UTC, containing 49% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10.4 dB.

Overview

847

Messages attributed

UTC dates decoded

125

Active 15-min windows

-10.4 dB

Estimated median S/N

Bands

160m · 14 80m · 149 40m · 597 20m · 61 10m · 26

First attributed message: 2026-07-17
Last attributed message: 2026-08-01 02:29 UTC

Observed FT8 message patterns

Attributed sample: 847 messages
Active dates: 16 UTC dates
Estimated median S/N: -10.4 dB
Estimated 10th-90th percentile: -20 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 191, moderate (-15 to -9 dB) 300, strong (≥ -8 dB) 356.

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 RA4FW in decoded directed-looking exchanges:

UI5A · European Russia ×2 R70OBN · European Russia ×2 RA2FKD · Kaliningrad ×2 RA6FC · European Russia ×2 RA6ZD · European Russia ×2 RM5F · European Russia ×2 RN3DDW/P · European Russia ×2 UA4CKN · European Russia ×2 EW2RA · Belarus G7IGN · England HA3MN · Hungary LZ1VL · Bulgaria

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 RA4FW

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: LO23 · 393 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,639 km (approx.)
Last such locator decoded: 2026-08-01 02:28 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	RA4FW S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-19 07:59	10m	- / 0	LZ4NV	-16 / -	2	✓ Closing fragment
08-12 07:44	10m	- / +2	RZ6L	-14 / -	2	Partial capture
08-12 07:42	10m	- / -12	LZ1VL	0 / -	4	✓ Closing fragment
08-12 06:59	10m	- / -12	SV1OZ	-14 / -	2	✓ Closing fragment
08-10 07:01	10m	- / -	RA6OY	+5 / -	4	Partial capture
08-10 06:31	10m	- / 0	RA3QPY	-20 / -	2	✓ Closing fragment
08-01 02:27	40m	+6 / -	N1WI	- / -10	4	✓ Closing fragment
08-01 02:22	40m	-3 / -	K3EDP	- / -10	5	✓ Closing fragment
08-01 01:33	80m	0 / -20	KC4QX	-14 / -13	5	✓ Full exchange observed
08-01 01:33	80m	-1 / -3	DL2AOM	-8 / -14	7	✓ Full exchange observed
08-01 01:31	80m	0 / -	AA6KJ	- / -	2	Partial capture
08-01 01:29	80m	+7 / -	W1MK	+4 / -7	4	✓ Closing observed
08-01 01:24	40m	-3 / -	KB8U	- / -	2	Partial capture
08-01 01:21	40m	-3 / -	TA2EE	- / -14	4	✓ Closing fragment
08-01 01:16	40m	-8 / -	K3WW	- / -19	5	✓ Closing fragment
08-01 01:14	40m	0 / -	LU4HA	- / -	3	Partial capture
08-01 01:12	40m	+11 / -	KG4RWO	- / -24	4	✓ Closing fragment
08-01 01:05	40m	+1 / -	XE3A	- / -9	6	✓ Closing fragment
08-01 01:03	40m	0 / -	CX3VB	- / -	3	Partial capture
08-01 01:02	40m	0 / -	KK1X	- / -14	2	✓ Closing fragment
08-01 01:00	40m	-2 / -	AF4OZ	- / -14	2	✓ Closing fragment
08-01 00:58	40m	+3 / -18	MW7RHR	-13 / -6	6	Partial capture
07-31 18:14	40m	-16 / -	UB6LWX	- / -4	2	✓ Closing fragment
07-31 18:13	40m	-16 / -	RK6ADN	- / -4	2	✓ Closing fragment
07-31 18:12	40m	-16 / 0	YO4NT	+3 / +1	5	✓ Full exchange observed
07-31 18:10	40m	-15 / -	3D2USU	- / -12	3	✓ Closing fragment
07-31 18:08	40m	-14 / +10	RA2FKD	-15 / +4	5	✓ Full exchange observed
07-31 18:07	40m	-11 / -	RU3XW	- / +3	2	✓ Closing fragment
07-31 18:06	40m	-11 / -	BA7IWL	- / -14	3	✓ Closing fragment
07-31 18:02	40m	-16 / -	R4PIX	- / -10	2	✓ Closing fragment
07-31 18:01	40m	-16 / -	UF6VC	- / -3	2	✓ Closing fragment
07-31 18:01	40m	-14 / -	RA3VX	-16 / +3	6	✓ Closing observed
07-31 18:00	40m	-11 / -	R4SCQ	- / -5	2	✓ Closing fragment
07-31 17:58	40m	-11 / -	R7GA	- / -5	2	✓ Closing fragment
07-31 04:33	40m	-14 / -	EC3A	- / -6	2	✓ Closing fragment
07-31 04:31	40m	-15 / -	WA2HIP	- / -	3	Partial capture
07-31 04:24	40m	-15 / +8	EW2ZC	-12 / +1	6	✓ Full exchange observed
07-31 04:23	40m	-12 / -	M0LEX	- / -	2	Partial capture
07-30 21:22	20m	- / -	DL1EDR	-14 / -	2	Partial capture
07-30 21:09	40m	-8 / -	KL7P	- / -	5	Partial capture
07-30 21:05	80m	0 / -	RA0AEP	- / -8	3	Partial capture
07-30 20:14	40m	0 / 0	RA3WY	-10 / +3	6	✓ Full exchange observed
07-30 20:12	40m	-3 / -	TF4M	- / -16	3	✓ Closing fragment
07-30 18:22	40m	-2 / -	BA6IM	- / -15	2	✓ Closing fragment
07-30 18:18	40m	-5 / -	GM0AKJ	- / -	3	Partial capture
07-30 18:13	40m	-9 / -	M8NAQ	- / -18	8	Partial capture
07-30 04:17	40m	-13 / -	K0DD	- / -	3	Partial capture
07-30 02:40	40m	-6 / -	KC4RNF	- / -	5	Partial capture
07-29 19:11	80m	+11 / -2	R2LAF/P	+9 / -2	5	✓ Full exchange observed
07-29 19:08	40m	-2 / -	VK4DAD	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
071645  -6 1527  RA4FW RD6OW RR73
065900 -12 2151  RA4FW SV1OZ -12 (x2)
070315 -22 2109  RA4FW RZ6CO -11
074200  -4 1228  RA4FW LZ1VL -12 (x3)
074400 -17 2323  RA4FW RZ6L KN97 (x2)
074430  +2 1228  RA4FW LZ1VL 73
104045 -21 1436  RA4FW RO6K RR73
091330 -20 1163  RA4FW R7LB LN17
075915 -16 1602  RA4FW LZ4NV +00 (x2)
102115 -19 2277  RA4FW SV1EKI KM18

40m

UTC    dB Audio  Message
012200  -2 1654  TA2EE RA4FW -14 (x3)
012400  -5 1653  KB8U RA4FW LO23 (x2)
022230  -2  830  K3EDP RA4FW LO23 (x5)
022545 -10 1600  M0LEX RA4FW LO23
022730  +5 2701  N1WI RA4FW LO23 (x4)

80m

UTC    dB Audio  Message
013300  -9 1857  RA4FW DL2AOM JO61
013315  +6 1852  KC4QX RA4FW -13
013330 -10 1138  RA4FW KC4QX R-20
013345  -8 1852  KC4QX RA4FW RR73
013400  -5 1856  RA4FW DL2AOM JO61
013415  +2 1852  KC4QX RA4FW RR73
013430 -19 1138  RA4FW KC4QX 73
013445  -4 1852  CQ RA4FW LO23 (x2)
013530  +2 2115  RA4FW IQ4JO JN63
013530 -12 1856  RA4FW DL2AOM JO61
013545  -1 1852  DL2AOM RA4FW -14
013600  -9 1856  RA4FW DL2AOM R-03
013615  -1 1852  DL2AOM RA4FW RR73
013630  -5 1856  RA4FW DL2AOM 73

20m

UTC    dB Audio  Message
102715 -15 2006  GE3ZQQ RA4FW 73
102745 -21 2005  GM4ZTO RA4FW LO23 (x2)
150345 -14  788  RA4FW GM3AND -02 (x2)
152330 -18 1170  RA4FW G8SVF -05
154300 -13 2155  RA4FW MW0AXD +00 (x3)
072115 -13 1181  W4PSK RA4FW LO23
161100  -9  573  RA4FW TN8GD RR73
212200 -15  931  RA4FW DL1EDR JO41 (x2)
212530  -9  704  RA4FW PD2ARI JO22
184630 -18 1075  RA4FW BH4ECL R+04

160m

UTC    dB Audio  Message
192730  +1 2028  UD8S RA4FW 73
210415  -2 1408  <...> RA4FW LO23 (x3)
210600  -5 1120  RA4FW UI5A KO85
210615  -3 1408  UI5A RA4FW +00
210630  -2 1120  RA4FW UI5A R-06
210645  -1 1408  UI5A RA4FW RR73
210700  -4 1120  RA4FW UI5A 73
210800 -20 1357  RA4FW OK9DMR JO70 (x4)
182145 -16 2369  <...> RA4FW LO23 (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.

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