RA3AKU — 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: KO85

Receiver-side FT8 activity involving RA3AKU, decoded by SO8OO in southeastern Poland. 74 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-14.

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 74 FT8 messages attributed to RA3AKU as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (41%), followed by 40 m (28%) and 160 m (15%). Most decodes (100%) fell within the six-hour window 13:00-19:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

160m · 11 80m · 30 40m · 21 20m · 10 10m · 2

First attributed message: 2026-06-06
Last attributed message: 2026-10-14 16:53 UTC

Observed FT8 message patterns

Attributed sample: 74 messages
Active dates: 7 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -12 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 1, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 55.

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 RA3AKU in decoded directed-looking exchanges:

E70SZ · Bosnia-Herzegovina ×2 DA1ST · Fed. Rep. of Germany ×2 EU8N · Belarus OH5KNL · Finland OH6RE · Finland R2EA · European Russia R2SN · European Russia RA3YDA · European Russia RA7T · European Russia RK4F · European Russia RV3ZK · European Russia UA3IDQ · 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 RA3AKU

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: KO85 · 43 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-10-14 16:46 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	RA3AKU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-14 16:52	80m	-6 / -12	E70SZ	+5 / -15	9	✓ Full exchange observed
10-14 16:47	80m	- / -20	4L7T	-9 / -	3	Partial capture
10-14 16:34	80m	0 / -	IQ4JO	- / -	3	Partial capture
10-14 16:32	80m	-2 / -9	R2HD	+6 / -7	4	✓ Full exchange observed
10-14 16:31	80m	-7 / -	RU3VT	-2 / -15	3	✓ Closing observed
10-14 16:29	80m	-2 / -11	DA1ST	+14 / -17	5	✓ Full exchange observed
10-14 16:26	80m	-5 / -7	RA3LCI	-8 / -11	5	✓ Full exchange observed
10-14 16:25	80m	-2 / -9	R2DRE	-1 / -7	5	✓ Full exchange observed
10-14 16:24	80m	-4 / -12	R6OQ	-14 / -4	4	✓ Full exchange observed
10-14 16:23	80m	-2 / -12	R9AL	-20 / -14	4	✓ Full exchange observed
10-07 16:30	160m	-12 / -15	UA3IDQ	-16 / -	3	✓ Closing observed
10-06 18:42	160m	- / -11	R2EA	-6 / -	2	✓ Closing fragment
10-06 18:40	160m	-10 / -16	R2SN	+2 / -	3	✓ Closing observed
10-06 18:38	160m	- / -14	OH6RE	-6 / -	2	✓ Closing fragment
10-06 17:49	160m	- / -18	EU8N	-9 / -	2	✓ Closing fragment
10-06 17:40	160m	- / -12	RU3ACA	+4 / -	2	Partial capture
10-06 17:15	160m	-11 / -7	RV3ZK	0 / -	3	✓ Closing observed
10-06 17:11	160m	- / -	RV3ZK	-10 / -	2	Partial capture
10-06 16:50	160m	-8 / -17	UA4PPQ	-13 / -4	4	✓ Full exchange observed
10-06 16:44	160m	- / -22	RA3YDA	-3 / -	2	✓ Closing fragment
10-06 16:43	160m	- / -20	UG4L	-12 / -	2	✓ Closing fragment
10-06 16:12	160m	- / -14	RC1TF	-5 / -	2	Partial capture
10-06 14:57	160m	- / -20	RA7T	-17 / -	3	✓ Closing fragment
10-05 17:45	160m	- / -13	OH5KNL	-4 / -	2	✓ Closing fragment
10-05 17:38	160m	- / -15	OZ7QC	-2 / -	2	Partial capture
10-05 17:24	160m	- / -8	ES2AJ	+7 / -	2	Partial capture
10-05 17:14	160m	- / -15	RK4F	-10 / -	2	✓ Closing fragment
10-05 17:12	160m	- / -12	YL3CW	+8 / -	2	✓ Closing fragment
09-17 17:31	40m	-8 / -24	HZ1TT	-10 / -8	3	Partial capture
08-29 14:31	20m	- / -	M7HET	-23 / -	3	Partial capture
08-26 17:58	40m	- / -10	PE1NAO	-4 / -	2	✓ Closing fragment
08-26 17:54	40m	- / -	DL3JHK	0 / -	2	Partial capture
08-26 17:54	40m	- / -	DL9MY	+1 / -	3	Partial capture
08-26 17:52	40m	- / +4	RD4HX	-2 / -	2	✓ Closing fragment
08-26 17:48	40m	-10 / -6	E70SZ	+11 / -6	5	✓ Full exchange observed
08-26 17:43	40m	- / -15	SV7BAY	+6 / -	2	✓ Closing fragment
08-26 17:11	40m	-9 / -	UN3P	- / -	2	Partial capture
08-26 16:57	20m	- / 0	MM7IEF	-14 / -	2	Partial capture
08-26 16:55	20m	- / -	RZ3Z/P	-2 / -	3	✓ Closing fragment
08-26 16:51	20m	-1 / -	8Z1IT	- / -	2	Partial capture
08-26 16:49	20m	+2 / -	9M2RSI	- / -18	4	✓ Closing fragment
08-24 18:45	40m	- / -13	GM0SDV	-2 / -	4	Partial capture
08-24 17:19	40m	- / -	DJ0MAB	-3 / -	3	Partial capture
08-24 17:18	40m	-4 / -6	RC6OZ	-8 / -	3	✓ Closing observed
08-24 17:16	40m	- / -14	TA6MMI	-5 / -	4	✓ Closing fragment
08-24 17:10	40m	- / -23	9A4ZM	+14 / -	3	✓ Closing fragment
08-24 17:10	40m	-9 / -10	DL6UM	+6 / -	8	✓ Closing observed
08-24 17:09	40m	- / -4	OZ5AGJ	-4 / -	2	Partial capture
08-12 15:52	20m	- / -12	IZ5UFW	-4 / -	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
174915 +13  421  RA3AKU E70SZ 73
175215  -3  422  RA3AKU RD4HX R+04 (x2)
175415  -1  371  RA3AKU DL9MY JO32
175415  +1  422  RA3AKU DL3JHK JO62
175445  +0  372  RA3AKU DL9MY JO32
175445  +0  421  RA3AKU DL3JHK JO62
175515  +3  371  RA3AKU DL9MY JO32
175845  -6 1349  RA3AKU PE1NAO -10 (x2)
173030 -11  616  ZL1RPC/F RA3AKU KO85
173145  -6  535  HZ1TT RA3AKU KO85
173200 -10 1729  RA3AKU HZ1TT -24
173245  -9  534  HZ1TT RA3AKU R-08
144200  -9 1715  RA3AKU EX7CQ +02

80m

UTC    dB Audio  Message
163715  -8  467  CQ RA3AKU KO85 (x2)
164645  -8  466  YU7AS RA3AKU KO85
164700  -9  651  RA3AKU 4L7T -20 (x3)
165215  +4  419  RA3AKU E70SZ JN84
165230  -6  420  E70SZ RA3AKU -15
165245  +1  419  RA3AKU E70SZ JN84
165300  -8  419  E70SZ RA3AKU -19
165315  +8  419  RA3AKU E70SZ R-12
165330  -5  419  E70SZ RA3AKU RR73
165345  +6  419  RA3AKU E70SZ R-12 (x3)

160m

UTC    dB Audio  Message
183845  -9 1356  RA3AKU OH6RE -14 (x2)
184015  +2  455  RA3AKU R2SN -16 (x2)
184100 -10  455  R2SN RA3AKU 73
184245  -5  746  RA3AKU R2EA -11 (x2)
162745 -21 1218  RA3AKU R9SAP -21
163030 -20 1518  RA3AKU UA3IDQ -15 (x2)
163115 -12  406  UA3IDQ RA3AKU 73
163345  -9  406  CQ RA3AKU KO85
163600  -9  405  UA9MA RA3AKU KO85
164200 -20 1239  UA3PY RA3AKU -09
164400 -12  405  DO5OT RA3AKU KO85

20m

UTC    dB Audio  Message
164645  +0  591  EP2AES RA3AKU KO85
164915  -3  755  9M2RSI RA3AKU KO85 (x4)
165115  -6  634  8Z1IT RA3AKU KO85 (x2)
165500  -4  580  RA3AKU RZ3Z/P KN84 (x3)
165700 -16  580  RA3AKU MM7IEF IO75 (x2)
143100 -22 1309  RA3AKU M7HET IO91 (x3)

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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