R8ACF — 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: Asiatic Russia Most frequent locator attributed to this token: LO95

Receiver-side FT8 activity involving R8ACF, decoded by SO8OO in southeastern Poland. 568 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 51 UTC dates in the available aggregate history. Observed between 2026-06-12 and 2026-10-22.

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 568 FT8 messages attributed to R8ACF as the transmitting token by decoded message structure across 51 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (82%), followed by 40 m (18%). Most decodes (52%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

568

Messages attributed

UTC dates decoded

177

Active 15-min windows

-13 dB

Estimated median S/N

Bands

40m · 105 20m · 463

First attributed message: 2026-06-12
Last attributed message: 2026-10-22 14:34 UTC

Observed FT8 message patterns

Attributed sample: 568 messages
Active dates: 51 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -17 to -6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 124, moderate (-15 to -9 dB) 326, strong (≥ -8 dB) 118.

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 R8ACF in decoded directed-looking exchanges:

OZ9FF · Denmark ×2 TA3NK · Asiatic Turkey ×2 R3KFT · European Russia ×2 R4CCE · European Russia ×2 R6YG · European Russia ×2 RW3ZO · European Russia ×2 UA3QNA · European Russia ×2 5B4ARQ · Cyprus DG6KL · Fed. Rep. of Germany DH5BO · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany DL9MV · Fed. Rep. of Germany

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 R8ACF

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: LO95 · 278 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,548 km (approx.)
Last such locator decoded: 2026-10-20 16:13 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	R8ACF S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 16:04	40m	- / -	DH0BRO	-2 / -	3	Partial capture
10-22 16:04	40m	- / +1	SM5JVF	-10 / -	3	✓ Closing fragment
10-22 14:39	40m	- / -3	RA4FEQ	-6 / -	2	✓ Closing fragment
10-22 14:37	40m	- / -17	OH3OJ	0 / -	2	✓ Closing fragment
10-22 14:33	40m	-16 / -	RX3PX	- / -10	2	✓ Closing fragment
10-21 17:31	40m	- / -19	PH2M	+4 / -	2	✓ Closing fragment
10-21 17:24	40m	- / -12	RU4SO	-6 / -	2	✓ Closing fragment
10-21 17:20	40m	- / -11	UB3ZKO	-10 / -	2	✓ Closing fragment
10-20 16:38	40m	- / -8	UC6B	-11 / -	2	✓ Closing fragment
10-20 16:34	40m	-12 / -11	RW3ZO	-7 / -1	4	✓ Full exchange observed
10-20 16:28	40m	- / -11	UA1WCF	-10 / -	2	✓ Closing fragment
10-20 16:20	40m	- / -	IZ2SPX	-21 / -	2	Partial capture
10-20 16:20	40m	- / -20	UA3DNK	-7 / -	2	✓ Closing fragment
10-20 16:04	40m	-12 / +1	R4DD	+4 / -4	5	✓ Full exchange observed
10-20 15:49	40m	- / -13	HA7TM	+7 / -	2	✓ Closing fragment
10-20 15:26	40m	- / -1	R2DAR	-10 / -	2	✓ Closing fragment
10-20 15:17	40m	- / -9	RU6C	0 / -	2	✓ Closing fragment
10-20 15:11	40m	-12 / -	FM/VE3DZ	- / -12	2	Partial capture
10-20 15:10	40m	-12 / -	UB0SMX	- / -6	2	✓ Closing fragment
10-20 15:08	40m	- / -9	RK6YD	-11 / -	2	✓ Closing fragment
10-20 14:30	40m	- / -3	R4ADJ	-14 / -	2	✓ Closing fragment
10-20 14:27	40m	- / -	R1BRY	-16 / -	2	✓ Closing fragment
10-20 14:25	40m	- / 0	UN0GY	-10 / -	2	✓ Closing fragment
10-20 14:24	40m	- / -7	R1QF	-16 / -	2	Partial capture
10-18 13:45	40m	- / +4	OH7UE	-4 / -	2	✓ Closing fragment
10-17 16:24	40m	-14 / -	RA0WBI	- / -	2	✓ Closing fragment
10-17 16:11	40m	-17 / -	RA4ABH	- / -1	2	✓ Closing fragment
10-17 15:54	40m	- / -12	RA6UAR	-6 / -	2	✓ Closing fragment
10-17 15:46	40m	- / -2	UC6D	0 / -	5	✓ Closing fragment
10-17 15:45	40m	- / -9	R4MA	-18 / -	2	✓ Closing fragment
10-17 15:25	40m	- / -3	R6OAQ	-4 / -	2	✓ Closing fragment
10-15 15:08	40m	- / -10	UA3PHB	-18 / -	2	✓ Closing fragment
10-15 14:45	40m	- / -9	RU6FS	-4 / -	2	✓ Closing fragment
10-15 14:40	40m	- / +1	R80SAA	+9 / -	2	✓ Closing fragment
10-15 14:31	40m	- / -13	R3DQB	-13 / -	3	✓ Closing fragment
10-14 17:50	40m	- / -18	IU1DOF	-4 / -	2	Partial capture
10-14 17:49	40m	- / -2	RX6ACR	-9 / -	2	✓ Closing fragment
10-14 17:34	40m	-14 / -3	R7KDW	+2 / 0	5	✓ Full exchange observed
10-13 18:19	40m	- / -	R2BPS	-12 / -	2	Partial capture
10-13 18:17	40m	- / -	SP5ALV	-22 / -	2	Partial capture
10-13 18:10	40m	- / -	F5NNN	-2 / -	6	Partial capture
10-13 18:06	40m	-12 / -21	R4GD	-20 / -	3	✓ Closing observed
10-13 17:50	40m	- / -8	YT2ZE	-7 / -	2	Partial capture
10-11 14:04	40m	- / -16	RQ7R	-14 / -	2	✓ Closing fragment
10-10 15:36	40m	- / -6	R2ZCA	+3 / -	2	✓ Closing fragment
10-09 16:50	40m	-17 / -13	RN6LBT	-8 / -13	4	✓ Full exchange observed
10-09 16:37	40m	- / -14	UB1AUW	-4 / -	4	✓ Closing fragment
10-09 16:31	40m	- / -14	R6ZB	-1 / -	2	✓ Closing fragment
10-09 04:57	40m	- / +6	RA3X	-8 / -	2	✓ Closing fragment
10-09 04:47	40m	- / -16	RU6CH	0 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
143345 -16  974  RX3PX R8ACF R-10 (x2)
143745  -2  559  R8ACF OH3OJ -17 (x2)
143945  -7  801  R8ACF RA4FEQ -03 (x2)
160430 -10 1193  R8ACF SM5JVF +01
160430  -3  956  R8ACF DH0BRO JO62
160500 -12 1192  R8ACF SM5JVF +01
160500  +0  956  R8ACF DH0BRO JO62
160530  -7 1192  R8ACF SM5JVF RR73
160530  -3  956  R8ACF DH0BRO JO62
160800 -14 1915  R8ACF RA6OF RR73
161430  -9 1766  R8ACF UA3QIN -15
163400  -4  558  R8ACF UA3GPM R-05

20m

UTC    dB Audio  Message
163130 -13  976  R8ACF OR1A JO21 (x4)
165630 +11  745  R8ACF G8CRB JO02 (x6)
170430 -14  961  CQ R8ACF LO95
170815 -21 1266  R8ACF PD9SD RRR
171145  -8 1241  R8ACF IK7IJR RR73
171300 -16  958  IU1DXU R8ACF LO95
171630  -4  957  EA6NB R8ACF LO95

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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