RK3AQ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO85

Receiver-side FT8 activity involving RK3AQ, decoded by SO8OO in southeastern Poland. 3,382 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 43 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-01.

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 3,382 FT8 messages attributed to RK3AQ as the transmitting token by decoded message structure across 43 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (38%), followed by 40 m (37%) and 80 m (25%). Most decodes (67%) fell within the six-hour window 16:00-22:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.8 dB.

Overview

3,382

Messages attributed

UTC dates decoded

486

Active 15-min windows

-9.8 dB

Estimated median S/N

Bands

80m · 856 40m · 1,235 20m · 1,273 10m · 18

First attributed message: 2026-06-07
Last attributed message: 2026-10-01 18:16 UTC

Observed FT8 message patterns

Attributed sample: 3,382 messages
Active dates: 43 UTC dates
Estimated median S/N: -9.8 dB
Estimated 10th-90th percentile: -17 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 507, moderate (-15 to -9 dB) 1,401, strong (≥ -8 dB) 1,474.

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 RK3AQ in decoded directed-looking exchanges:

R7KM · European Russia ×3 F1PBZ · France ×2 R5AV · European Russia ×2 UB0SMX/P · Asiatic Russia ×2 UK8FCM · Uzbekistan ×2 DG0AM · Fed. Rep. of Germany ×2 HA3GX · Hungary ×2 RA3ZOM · European Russia ×2 RA6OD · European Russia ×2 YH2AZ · Indonesia ×2 DO2SHJ · Fed. Rep. of Germany PA3EVY · Netherlands

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 RK3AQ

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 · 1,762 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-10-01 18:16 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	RK3AQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-01 18:14	40m	-12 / -	F5ASD	-8 / -	2	✓ Closing observed
10-01 18:12	40m	- / -10	IV3VFP	+2 / -	2	✓ Closing fragment
10-01 18:07	40m	-12 / -	PA8DC	-3 / -14	5	✓ Closing observed
10-01 18:03	40m	- / -13	M3FGR	-18 / -	4	✓ Closing fragment
10-01 17:57	40m	-12 / -	DL2BU	- / -	2	Partial capture
10-01 17:51	40m	-8 / -	R7KJG	- / -10	2	Partial capture
10-01 17:50	40m	-4 / -8	IK1JMJ	-2 / -3	3	✓ Full exchange observed
10-01 17:49	40m	-7 / -	9A1AAY	- / -	2	Partial capture
10-01 17:48	40m	-10 / -	IZ3BUR	- / -	2	Partial capture
10-01 17:46	40m	-10 / -3	SV3SIM	-12 / -9	4	✓ Full exchange observed
10-01 17:42	40m	-16 / -	BA7IWL	- / -18	2	✓ Closing fragment
10-01 17:35	40m	-12 / -12	SV3SIM	-18 / -5	5	Partial capture
10-01 17:33	40m	-11 / -	GM0SDV	- / -14	4	Partial capture
10-01 17:31	40m	-17 / -19	DF7NO	-2 / -10	5	✓ Full exchange observed
10-01 17:30	40m	-16 / -3	DD3ZZ	-4 / -16	5	✓ Full exchange observed
10-01 17:28	40m	-11 / -	A41ED	- / -6	3	✓ Closing fragment
10-01 17:25	40m	-12 / -	DD4U	- / -19	3	✓ Closing fragment
10-01 17:24	40m	-12 / -10	EH5FVP	-4 / -13	4	✓ Full exchange observed
10-01 17:19	40m	-8 / -4	IU0CCE	-14 / -12	4	✓ Full exchange observed
10-01 17:15	40m	-6 / -	IZ1FYZ	- / -	2	Partial capture
10-01 17:12	40m	-7 / -	BD9DM	- / -20	4	Partial capture
10-01 17:10	40m	-10 / -	RW4HRE	- / -12	3	✓ Closing fragment
10-01 17:08	40m	-12 / -9	IQ0YA	-17 / -10	6	✓ Full exchange observed
10-01 17:06	40m	-12 / +1	SX2LGT	0 / -4	4	✓ Full exchange observed
10-01 17:05	40m	-13 / -	R7KJG	- / -	2	Partial capture
10-01 17:03	40m	-8 / +8	YO8SGC	-11 / -10	4	✓ Full exchange observed
10-01 17:01	40m	-10 / +3	R6LI	-6 / -	2	✓ Closing observed
10-01 17:00	40m	-8 / -6	UB2FEK	-4 / -	4	✓ Closing observed
10-01 16:58	40m	-10 / -	R7KJG	- / -	2	Partial capture
10-01 16:56	40m	+2 / -	OK8UQ	- / -	3	Partial capture
09-25 17:32	40m	-3 / -2	R5AV	-13 / -	3	✓ Closing observed
09-25 17:31	40m	-10 / -	UN2PL	- / -4	2	✓ Closing fragment
09-25 17:29	40m	-6 / -	EA2CVV	- / -23	2	✓ Closing fragment
09-25 17:27	40m	-6 / -1	R7LC	-2 / 0	5	✓ Full exchange observed
09-25 17:00	40m	-14 / -	EU6UE	-16 / -18	3	✓ Closing observed
09-25 16:53	40m	-8 / -	R6DZD	- / -3	2	✓ Closing fragment
09-25 16:46	40m	-6 / +1	RX3RZ	0 / -	4	✓ Closing observed
09-25 16:44	40m	-8 / -	UB3FBD	-11 / -14	3	✓ Closing observed
09-25 16:42	40m	-8 / -	OH7UE	- / -	2	✓ Closing fragment
09-25 16:40	40m	-8 / -	R3KGD	- / -	2	✓ Closing fragment
09-25 16:36	40m	-5 / -	G8KSH	-10 / -18	4	✓ Closing observed
09-25 16:35	40m	-2 / -	DL4AC	- / -18	2	✓ Closing fragment
09-25 16:27	40m	- / -3	RA6OQ	-8 / -	2	✓ Closing fragment
09-25 16:25	40m	-6 / -9	R3OR	+7 / -1	4	✓ Full exchange observed
09-25 16:21	40m	-7 / -	RA3TFG	- / -6	3	✓ Closing fragment
09-25 16:18	40m	-12 / -	UC6W	- / -10	3	✓ Closing fragment
09-25 16:17	40m	-9 / -6	R4DD	-10 / -	2	✓ Closing observed
09-25 16:11	40m	-14 / -	R6YBP	-20 / +1	3	✓ Closing observed
09-25 15:54	40m	-9 / -	VU3IHP	- / -25	3	✓ Closing fragment
09-25 15:51	40m	-6 / -	R6ZB	- / -5	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
180145  -7 1814  CQ RK3AQ KO85
180300 -20 1647  RK3AQ M3FGR IO91 (x4)
180745  +0 1814  RK3AQ PA8DC JO21 (x2)
180830 -14 1814  PA8DC RK3AQ -14 (x2)
180915  -4 1813  RK3AQ PA8DC 73
181245  +2 1536  RK3AQ IV3VFP -10 (x2)
181445  -8 1400  RK3AQ F5ASD RR73
181500 -12 1814  F5ASD RK3AQ 73
181600 -12 1814  SH7KAT RK3AQ KO85

80m

UTC    dB Audio  Message
164115  -2 1937  SV7BVM RK3AQ KO85
164345  -8 1051  UA9CFH RK3AQ KO85 (x2)
164430 -13 2139  RK3AQ UA9CFH +01
164445  -5 1051  UA9CFH RK3AQ R-05
164500 -18 2139  RK3AQ UA9CFH RR73
164515 -11 1050  UA9CFH RK3AQ 73
164600  -8 2334  RK3AQ RV3YN +01
164615 -10 1051  RV3YN RK3AQ R-08
164630  +0 2334  RK3AQ RV3YN RR73
164645  +0 1051  RV3YN RK3AQ 73
171715 -12 1123  RI1FJZ RK3AQ KO85
171730 +17 2442  RK3AQ IZ3EAX JN65
171745 -11 1124  RI1FJZ RK3AQ KO85
171845  -8 1123  IZ3EAX RK3AQ -13

20m

UTC    dB Audio  Message
142400  -5  833  RK3AQ PD0AAG -09
142615 -18  907  PD0AAG RK3AQ R-19
145545  +9  907  A71YY RK3AQ KO85
145915 -16 2229  RK3AQ TA2HLE +11
145930 -13  907  TA2HLE RK3AQ R-19
150315 -14  907  <...> RK3AQ -14 (x4)
150830 -16  907  TA6RIK RK3AQ KO85
151115  -4 1723  RK3AQ F4HSB JN37
151130 -12  907  <...> RK3AQ KO85
151145  -5 1723  RK3AQ F4HSB JN37 (x3)

10m

UTC    dB Audio  Message
123230 -13 2506  RK3AQ R1BGR -14
071830 -24 1891  RK3AQ UA3LNM -13
072230  -1 1796  RK3AQ IK2YYO +02
073715  -6  667  RK3AQ PA3EVY -02 (x2)
074845 -20 1658  RK3AQ RL1B -11 (x3)
082215 -19 1464  RK3AQ EU2NS -03
082715  -4 2494  RK3AQ RV1CC -08 (x2)
083845 -14  945  RK3AQ DO2SHJ -12 (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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