R8AC — 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: MO05

Receiver-side FT8 activity involving R8AC, decoded by SO8OO in southeastern Poland. 99 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 22 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-23.

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 99 FT8 messages attributed to R8AC as the transmitting token by decoded message structure across 22 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (73%), followed by 40 m (11%) and 80 m (10%). Several six-hour UTC windows tied for the largest share (70%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 10 40m · 11 20m · 72 10m · 6

First attributed message: 2026-06-07
Last attributed message: 2026-10-23 16:30 UTC

Observed FT8 message patterns

Attributed sample: 99 messages
Active dates: 22 UTC dates
Estimated median S/N: -12 dB
Estimated 10th-90th percentile: -19 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 24, moderate (-15 to -9 dB) 46, strong (≥ -8 dB) 29.

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 R8AC in decoded directed-looking exchanges:

R9CS/P · European Russia ×3 RA7T · European Russia ×2 RU4I · European Russia ×2 SV1ENG · Greece ×2 CR7BRV · Portugal DN9OY · Fed. Rep. of Germany ES2AJ · Estonia R1NI · European Russia R1NW · European Russia R2HM · European Russia R2RAK · European Russia R4DD · European Russia

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 R8AC

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: MO05 · 28 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,674 km (approx.)
Last such locator decoded: 2026-10-23 16:07 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	R8AC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 16:38	80m	- / -14	RA3RQF	+6 / -	2	✓ Closing fragment
10-23 16:29	80m	-21 / -12	YO7CFD	+11 / -14	3	✓ Full exchange observed
10-23 16:28	80m	-16 / -	UA1CKA	- / -9	2	Partial capture
10-23 16:23	80m	- / -15	YO7CFD	+14 / -	5	Partial capture
10-23 16:23	80m	-15 / -	R9CS/P	- / -12	3	✓ Closing fragment
10-23 16:17	80m	- / +10	R9CS/P	-12 / -	2	Partial capture
10-23 14:25	80m	- / -	OH3NXW	-6 / -	2	Partial capture
10-23 14:24	80m	- / -18	RD7X	-14 / -	2	✓ Closing fragment
10-22 16:34	160m	- / -11	RU3SD	-4 / -	2	✓ Closing fragment
10-22 16:01	80m	- / -14	YO7CFD	+15 / -	4	Partial capture
10-22 16:00	80m	-24 / -9	RA5AD	-8 / -	3	✓ Closing observed
10-22 15:28	160m	- / -13	RN7T	-3 / -	2	✓ Closing fragment
10-18 17:42	160m	- / -	IK0HBN	+3 / -	9	Partial capture
10-18 17:40	160m	- / -	RZ3DW	+10 / -	3	Partial capture
10-18 17:27	80m	- / -10	RZ4M	-11 / -	2	✓ Closing fragment
10-18 17:14	80m	- / -23	UA4SJB	-12 / -	2	✓ Closing fragment
10-18 17:02	80m	- / -10	RM1O	+6 / -	2	✓ Closing fragment
10-18 17:00	80m	- / -16	R3VE	-8 / -	2	✓ Closing fragment
10-18 16:50	160m	- / -19	RY3K	-2 / -	3	✓ Closing fragment
10-18 16:36	160m	- / -	IK0HBN	+8 / -	6	Partial capture
10-18 16:23	160m	- / -	IK0HBN	0 / -	5	Partial capture
10-18 06:30	40m	- / -	RL3QGD	-16 / -	3	Partial capture
10-17 17:25	80m	- / -16	R1IV	-5 / -	2	✓ Closing fragment
10-17 15:54	40m	-7 / -	R2EA/P	- / -19	3	Partial capture
10-17 15:40	80m	-11 / -10	OH5KNL	+10 / 0	4	✓ Full exchange observed
10-17 15:20	40m	-15 / -	SV1MOZ	- / -19	2	✓ Closing fragment
10-17 15:18	40m	-14 / -	R2EA/P	- / -7	2	✓ Closing fragment
10-17 11:33	40m	- / -16	UB6OFG	-22 / -	2	✓ Closing fragment
10-16 17:22	160m	- / -13	R1NI	-12 / -	2	✓ Closing fragment
10-14 18:16	160m	- / -1	RW9WJ	-22 / -	2	✓ Closing fragment
10-14 18:08	160m	- / -15	SA3CAT	+3 / -	2	✓ Closing fragment
10-14 18:01	160m	- / -18	RA4CFX	-19 / -	3	✓ Closing fragment
10-14 17:06	160m	- / -14	RU3ACA	-12 / -	2	✓ Closing fragment
10-14 16:52	160m	- / -13	RK1N	-4 / -	2	✓ Closing fragment
10-14 16:43	160m	- / -15	RU4I	-12 / -	2	✓ Closing fragment
10-14 16:20	160m	- / -20	UB1Q	-16 / -	2	✓ Closing fragment
10-14 16:15	160m	- / -15	RA4CBN	-15 / -	3	✓ Closing fragment
10-14 14:49	40m	-16 / -	RZ9A	- / -14	2	Partial capture
10-13 16:11	80m	- / -19	R80SAA	-14 / -	2	✓ Closing fragment
10-13 14:38	40m	- / -13	SV1ENG	-17 / -	4	✓ Closing fragment
10-12 15:52	160m	- / -	UA3ZUX	-14 / -	2	Partial capture
10-11 17:43	160m	- / -	IK0HBN	+2 / -	4	Partial capture
10-11 17:39	160m	- / -	IK0HBN	+8 / -	2	Partial capture
10-11 17:33	160m	- / -	IK0HBN	+10 / -	5	Partial capture
10-11 17:05	160m	- / -	UA4FKT	-10 / -	2	Partial capture
10-11 17:01	160m	- / -	UA4FKT	-15 / -	3	Partial capture
10-11 17:00	160m	- / -18	RQ3M	-4 / -	2	✓ Closing fragment
10-10 15:16	40m	- / -2	R4PFY	-16 / -	2	✓ Closing fragment
10-06 15:59	80m	- / -18	R3KAB	-2 / -	2	✓ Closing fragment
10-06 02:47	80m	- / +4	R9CS/P	+5 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
162330 -14 2250  R9CS/P R8AC R-12
162345 +12  576  R8AC YO7CFD -15
162400 -19 2249  R9CS/P R8AC R-12
162415 +16  576  R8AC YO7CFD -15
162430 -12 2249  R9CS/P R8AC 73
162445 +16  576  R8AC YO7CFD -15 (x3)
162830 -16 2201  UA1CKA R8AC -09 (x2)
162945 +10  575  R8AC YO7CFD -12
163000 -21 1893  YO7CFD R8AC R-14
163015 +12  576  R8AC YO7CFD RR73
163800  +6  510  R8AC RA3RQF R-14 (x2)

160m

UTC    dB Audio  Message
174115 +10 2444  R8AC RZ3DW KO84
174215  +2 1443  R8AC IK0HBN JN62 (x9)
174930 -13 1101  R8AC UA9CMN -13
152830  -4  865  R8AC RN7T -13 (x2)
163400  -3 2052  R8AC RU3SD -11 (x2)

40m

UTC    dB Audio  Message
144945 -15 2302  RZ9A R8AC -14
113315 -19 1788  R8AC UB6OFG -16 (x2)
151800 -16  979  R2EA/P R8AC R-07 (x2)
152000 -16  979  SV1MOZ R8AC -19 (x2)
152115  +0 2031  R8AC IZ0UME JN61
155430  -9 2773  R2EA/P R8AC MO05 (x3)
161600 -13 2387  RA7KW/P R8AC R-06
063030 -14 2081  R8AC RL3QGD KO91 (x3)

10m

UTC    dB Audio  Message
120600 -24 1913  CR7BRV R8AC MO05
120615  +2  905  R8AC CR7BRV +02
120630 -14 1914  CR7BRV R8AC R+02
120645  +2  906  R8AC CR7BRV RR73
120700 -13 1913  CR7BRV R8AC 73
120730 -13 1913  DN9OY R8AC MO05 (x2)
121100 -21 1847  5Z4RS R8AC MO05

20m

UTC    dB Audio  Message
031745  -6 2467  R8AC R70OBN +00 (x2)
110600 -12 2376  R8AC RN6LPC LN17
151400 -14 1946  R8AC R50RKZ R+28 (x2)
115415 -18 1237  RU3DOK/P R8AC MO05
115615 -19 1237  JM1SZY R8AC 73
143915 -13 1378  R8AC UF4S/6 -04

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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