RX3AEX — 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 RX3AEX, decoded by SO8OO in southeastern Poland. 2,472 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 93 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-21.

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 2,472 FT8 messages attributed to RX3AEX as the transmitting token by decoded message structure across 93 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (64%), followed by 40 m (20%) and 80 m (12%). The busiest six-hour window was 15:00-21:00 UTC, containing 41% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (63%); the estimated median was -5 dB.

Overview

2,472

Messages attributed

UTC dates decoded

557

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 304 40m · 489 20m · 1,573 10m · 106

First attributed message: 2026-06-06
Last attributed message: 2026-09-21 16:55 UTC

Observed FT8 message patterns

Attributed sample: 2,472 messages
Active dates: 93 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -15.8 to +9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 252, moderate (-15 to -9 dB) 672, strong (≥ -8 dB) 1,548.

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 RX3AEX in decoded directed-looking exchanges:

RI0SP · European Russia ×9 DK5UR · Fed. Rep. of Germany ×6 R2EA/P · European Russia ×4 RI1FJL · Franz Josef Land ×3 LB2KK · Norway ×2 RA6OD · European Russia ×2 RU6L/P · European Russia ×2 TA1GRH · European Turkey ×2 UB4CLH · European Russia ×2 UK8FCM · Uzbekistan ×2 Z31PM · North Macedonia ×2 PA4PA · Netherlands ×2

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 RX3AEX

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 · 1,543 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-09-21 16:53 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	RX3AEX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 16:53	40m	+6 / +1	DG6COC/P	-6 / -9	5	✓ Full exchange observed
09-21 16:51	40m	+5 / -	SP9MIV	- / -	2	Partial capture
09-21 16:47	40m	+1 / -4	DG6COC/P	0 / -14	8	Partial capture
09-21 16:40	40m	+1 / -	SP9MIV	- / -	2	Partial capture
09-19 08:32	40m	-22 / -3	R2EA/P	-17 / 0	2	Partial capture
09-18 19:12	40m	-6 / -	EA2BHE	- / -14	2	✓ Closing fragment
09-18 19:09	40m	-5 / -	R9HEP/P	- / -11	4	✓ Closing fragment
09-18 04:53	40m	-7 / -11	PA4PA	+4 / -	4	✓ Closing observed
09-16 04:21	40m	-11 / -	RI1FJZ	- / -	2	Partial capture
09-16 04:17	40m	-12 / -	RI1FJZ	- / -	3	Partial capture
09-12 15:07	40m	+1 / -2	GB1HTC	-6 / -8	7	✓ Full exchange observed
09-12 15:04	40m	-4 / -	GB1HTC	- / -	2	Partial capture
09-09 19:15	80m	-6 / -	R3YAU	+3 / +5	3	✓ Full exchange observed
09-09 19:15	80m	0 / -	RA3PGR	- / +8	2	Partial capture
09-09 19:10	80m	0 / -9	DO2YJG	-13 / -	4	✓ Closing observed
09-09 18:27	40m	+4 / -	ZL1RPC/P	- / -	3	Partial capture
09-09 18:20	80m	+6 / -	RA3TVW	- / +1	2	✓ Closing fragment
09-09 18:18	80m	+2 / +1	R3MDJ	-13 / +3	5	✓ Full exchange observed
09-09 06:23	40m	-1 / -	DK5UR	-1 / -18	4	✓ Closing observed
09-08 05:05	40m	+6 / -	DF7EE	- / -13	2	✓ Closing fragment
09-08 05:02	40m	+6 / -	RC7LX	- / -10	2	✓ Closing fragment
09-05 15:27	80m	-9 / -	UA1OMS	- / -7	3	✓ Closing fragment
09-05 03:38	40m	- / -	UA9SY	-14 / -	4	Partial capture
09-05 03:36	40m	0 / -	RA9MAI	- / -12	2	✓ Closing fragment
09-05 03:17	40m	-7 / -	J38DX	- / -11	3	✓ Closing fragment
09-05 02:48	80m	-3 / -	CE8EIO	- / -13	3	✓ Closing fragment
09-05 02:46	80m	-6 / -3	TF3VS	+3 / -6	5	✓ Full exchange observed
09-04 03:04	80m	-8 / -	PT7ZT	- / -9	3	✓ Closing fragment
09-04 03:00	80m	-9 / -	TA2K	- / -18	2	Partial capture
09-04 02:58	80m	-8 / -1	IT9EUT	-4 / -10	5	✓ Full exchange observed
09-04 02:57	80m	-3 / -1	F5MYK	-9 / -15	4	✓ Full exchange observed
09-04 02:55	80m	-15 / -	OH3DJP	- / -11	4	✓ Closing fragment
09-04 02:51	80m	0 / +4	UA3ATQ	-13 / +2	5	✓ Full exchange observed
09-04 02:49	80m	+5 / -	DK2EU	- / -6	2	✓ Closing fragment
09-04 02:37	40m	-10 / -	W0ZB	- / -	2	Partial capture
09-04 02:35	40m	-12 / -	A65BR	- / -14	3	✓ Closing fragment
09-04 02:29	80m	+12 / -	F5OAM	-13 / -10	4	✓ Closing observed
09-04 02:28	80m	+12 / +1	ON4MAP	-24 / -15	3	✓ Full exchange observed
09-04 02:24	80m	+1 / +10	DG1YHP	-4 / 0	5	✓ Full exchange observed
09-04 02:22	80m	+2 / +2	RD1A	+2 / +3	4	✓ Full exchange observed
09-04 02:20	80m	+4 / -3	IQ4JO	+10 / -2	5	✓ Full exchange observed
09-03 18:38	80m	+5 / -9	R5VCW	-24 / -5	4	✓ Full exchange observed
09-03 06:52	40m	- / -17	DK5UR	-2 / -	2	✓ Closing fragment
09-03 06:38	40m	-12 / -	DK5UR	- / -	3	Partial capture
09-02 02:23	80m	+8 / -	LU3CQ	- / -	2	Partial capture
09-02 00:23	80m	+12 / -	RI1FJL	-10 / -14	6	✓ Closing observed
09-01 16:44	40m	+6 / -	RI1FJL	- / -	6	Partial capture
08-31 23:35	40m	-5 / -	RI1FJL	- / -18	5	✓ Closing fragment
08-31 16:45	20m	+11 / -3	F1PPH	-8 / -8	4	✓ Full exchange observed
08-31 16:42	20m	+14 / -	F8GAF	- / -15	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
164800  +9 2385  DG6COC/P RX3AEX KO85 (x2)
164845  +0 1066  RX3AEX DG6COC/P -04
164900  +3 1485  DG6COC/P RX3AEX R-14 (x3)
165015 -19 1485  RX3AEX UB3FBD KO85
165030  +1 1485  DG6COC/P RX3AEX R-14
165100  +5 1734  SP9MIV RX3AEX KO85 (x2)
165330  +6  971  DG6COC/P RX3AEX KO85
165415  -7  971  RX3AEX DG6COC/P +01
165430  +7 1019  DG6COC/P RX3AEX R-09
165445  -4  971  RX3AEX DG6COC/P RR73
165500  +5 1019  DG6COC/P RX3AEX 73

80m

UTC    dB Audio  Message
191130  +0 1255  DO2YJG RX3AEX RR73
191145 -12 1411  RX3AEX DO2YJG 73
191330  -1 1255  CQ RX3AEX KO85                        a1 (x2)
191415 -24 1255  RX3AEX DA6PI JN49
191430  -4 1255  CQ RX3AEX KO85
191500  +0 1255  RA3PGR RX3AEX +08
191515  +1 1375  RX3AEX R3YAU +12
191530  -1 1255  RA3PGR RX3AEX +08
191630  -6 2263  R3YAU RX3AEX R+05
191715  +5 1375  RX3AEX R3YAU RR73
192330  +4 2420  CQ RX3AEX KO85 (x3)
192645 -18 2420  RX3AEX DO9FSE JO30

20m

UTC    dB Audio  Message
164115 -15 3102  RX3AEX VU2FR ML88
164130 +13 2342  5Z4VJ RX3AEX -04
164145 -12 3102  RX3AEX VU2FR ML88
164145 -23 1988  RX3AEX DK1MBY JN58
164200 +11 2342  5Z4VJ RX3AEX RR73
164215 -14 3102  RX3AEX VU2FR ML88
164230 +13 2342  F8GAF RX3AEX -15
164300 +11 2342  CQ RX3AEX KO85
164430 +14 2342  F8GAF RX3AEX RR73
164500 +14 2342  CQ RX3AEX KO85 (x2)
164545 -11 2341  RX3AEX F1PPH JN07
164600 +10 2342  F1PPH RX3AEX -08
164615  -6 2341  RX3AEX F1PPH R-03
164630 +12 2342  F1PPH RX3AEX RR73

10m

UTC    dB Audio  Message
180100 -17 2443  CQ RX3AEX KO85                        a1
094345  -9 2512  R9CA RX3AEX 73
085345 -15 2498  <...> RX3AEX R-12
080230 -18 1220  RX3AEX RA6ANN KN95 (x3)
075215 -12 2480  <...> RX3AEX KO85 (x9)

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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