RA3LBK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO64

Receiver-side FT8 activity involving RA3LBK, decoded by SO8OO in southeastern Poland. 242 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-15.

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 242 FT8 messages attributed to RA3LBK as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (56%), followed by 20 m (22%) and 80 m (12%). Most decodes (73%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -6 dB.

Overview

242

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 30 40m · 135 20m · 53 10m · 24

First attributed message: 2026-06-08
Last attributed message: 2026-09-15 15:46 UTC

Observed FT8 message patterns

Attributed sample: 242 messages
Active dates: 21 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -14 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 17, moderate (-15 to -9 dB) 75, strong (≥ -8 dB) 150.

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 RA3LBK in decoded directed-looking exchanges:

RC6OD · European Russia ×2 HA3MN · Hungary HG1DRC · Hungary PD0HLA · Netherlands R3KLE · European Russia R6ZEJ · European Russia R7HC · European Russia RC6OZ · European Russia RL3K · European Russia RQ7R · European Russia RV6BT · European Russia RX7O · 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 RA3LBK

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: KO64 · 104 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 915 km (approx.)
Last such locator decoded: 2026-09-14 13:56 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	RA3LBK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 15:46	40m	-3 / -4	R4PFY	-15 / +2	3	✓ Full exchange observed
09-15 15:44	40m	+4 / -	RA3TVW	- / 0	2	✓ Closing fragment
09-15 15:42	40m	-7 / -	RA9HM	- / -8	2	✓ Closing fragment
09-14 13:59	40m	-11 / -3	HA9OA	+7 / -21	6	✓ Full exchange observed
09-14 13:58	40m	-17 / -1	R70SAB	-8 / -	4	✓ Full exchange observed
09-14 13:54	40m	-19 / -	R9FGJ	- / -23	3	✓ Closing fragment
09-14 13:52	40m	-13 / -	R1LH	- / -3	2	✓ Closing fragment
09-13 04:02	40m	- / -16	RU7KQ	-2 / -	2	✓ Closing fragment
09-13 03:58	40m	- / -15	EA5HEU	-10 / -	4	✓ Closing fragment
09-13 03:58	40m	- / -	R6LKG	-5 / -	3	Partial capture
09-13 03:53	40m	+6 / -	R4FDW	- / -12	2	✓ Closing fragment
09-13 03:52	40m	- / -6	RD4HX	-10 / -	2	✓ Closing fragment
09-13 03:47	40m	- / -4	RG6S	-12 / -	2	✓ Closing fragment
09-02 17:06	80m	-8 / +6	R9CS/P	-2 / +3	6	✓ Full exchange observed
09-02 16:58	80m	-10 / -	R9CS/P	- / -	2	Partial capture
09-02 16:53	80m	-11 / -	RA9YTI	- / -16	2	✓ Closing fragment
09-02 16:43	80m	-12 / -	RA9MAI	- / -	2	Partial capture
08-23 14:45	40m	-9 / -	RA6ZD	- / -3	2	✓ Closing fragment
08-23 14:42	40m	-9 / -16	PE9JAN	-9 / -23	6	✓ Full exchange observed
08-23 14:41	40m	-12 / -14	DL1DEU	-3 / -19	5	✓ Full exchange observed
08-23 14:36	40m	-12 / -7	EW1TA/P	-24 / -10	5	✓ Full exchange observed
08-15 03:50	20m	- / -6	7Z1XX	-11 / -	3	✓ Closing fragment
08-01 01:42	40m	+2 / -	UN7PPV	- / -15	2	✓ Closing fragment
08-01 01:37	40m	- / -14	RA1TR	-15 / -	3	Partial capture
08-01 01:36	40m	-13 / -	T46FCR	- / -7	3	Partial capture
07-24 01:28	40m	- / 0	F5SJC	-20 / -	2	✓ Closing fragment
07-24 01:25	40m	- / -1	K1HC	-12 / -	3	✓ Closing fragment
07-24 01:16	80m	-1 / 0	HA3GX	+2 / -7	6	✓ Full exchange observed
07-24 01:10	80m	- / +4	RN6MA	+4 / -	3	Partial capture
07-24 01:10	80m	+4 / -6	DO1OAS	0 / -12	3	Partial capture
07-24 01:08	80m	+5 / -2	DL9KM	+4 / -6	5	✓ Full exchange observed
07-24 01:07	80m	+8 / +3	RC6OD	+12 / -	4	✓ Full exchange observed
07-22 02:06	40m	- / +5	RZ6ALZ	-12 / -	2	✓ Closing fragment
07-22 01:50	80m	-6 / -	RC6OD	- / -	3	Partial capture
07-22 01:46	80m	+5 / -6	RC6OD	+8 / -	5	✓ Full exchange observed
07-20 02:17	40m	-2 / -	W4GGJ	- / -12	2	✓ Closing fragment
07-19 13:59	10m	- / -	DK7UY	-12 / -	2	Partial capture
07-18 02:48	20m	-16 / -	K4YJ	- / -21	2	✓ Closing fragment
07-18 02:45	20m	-8 / -	W3YNI	- / -14	2	✓ Closing fragment
07-18 02:43	20m	-12 / -	RK4CH	- / -14	2	✓ Closing fragment
07-18 02:42	20m	-14 / -	UA4NX	- / -	2	✓ Closing fragment
07-17 07:46	10m	- / -5	SV2CLJ	-7 / -	3	✓ Closing fragment
07-17 07:37	10m	- / -14	RN6MA	-11 / -	2	Partial capture
07-17 03:08	40m	-7 / -	UG4P	- / -19	2	✓ Closing fragment
07-17 03:06	40m	0 / -	F1PBZ	- / +6	2	✓ Closing fragment
07-17 03:02	40m	-4 / -5	IQ4JO	-2 / +1	5	✓ Full exchange observed
07-15 07:52	10m	- / +7	RQ7R	-16 / -	2	✓ Closing fragment
06-27 05:22	10m	-12 / -	HA3MN	- / -6	2	✓ Closing fragment
06-27 05:21	10m	-23 / +5	R7HC	-24 / -	2	✓ Closing observed
06-26 05:06	10m	- / +5	RX7O	+8 / -	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
135845 -16 1940  R70SAB RA3LBK 73
135900  +7 2988  RA3LBK HA9OA KN08
135915 -12 1940  RD6OZ RA3LBK +05
135930  +6 2988  RA3LBK HA9OA KN08
135945 -12 1940  HA9OA RA3LBK -21
140000  +6 2988  RA3LBK HA9OA R-03
140015 -10 1940  HA9OA RA3LBK RR73
140030 +10 2988  RA3LBK HA9OA 73
154245  -5 1626  RA9HM RA3LBK -08 (x2)
154445  +2  755  RA3TVW RA3LBK +00 (x2)
154600 -11 1810  RA3LBK R4PFY -04
154645  -3 2400  R4PFY RA3LBK R+02
154700 -19 1810  RA3LBK R4PFY RR73

80m

UTC    dB Audio  Message
011945  +7 1956  CQ RA3LBK KO64 (x3)
164315  -9  885  RA9MAI RA3LBK KO64 (x2)
165315 -12 1488  RA9YTI RA3LBK R-16 (x2)
165845 -11 2521  R9CS/P RA3LBK KO64 (x5)
170900  -2 2521  RA3LBK R9CS/P R+06
170915  -6 2549  R9CS/P RA3LBK RR73
170930  -1 2521  RA3LBK R9CS/P 73

20m

UTC    dB Audio  Message
024215 -14 2408  UA4NX RA3LBK R+12 (x2)
024315 -11 2408  RK4CH RA3LBK -14 (x2)
024545  -5 2408  W3YNI RA3LBK R-14 (x2)
024645 -14 2409  CQ RA3LBK KO64 (x2)
024845 -19 2408  K4YJ RA3LBK -21 (x2)
015930 -20 1702  CQ RA3LBK KO64                        a1 (x2)
035015 -10 2435  RA3LBK 7Z1XX LL07 (x3)

10m

UTC    dB Audio  Message
052200 -23 1713  R7HC RA3LBK RR73
052230 -11 1712  HA3MN RA3LBK R-06 (x2)
050200  -8 2677  RA3LBK UA4HJ RR73
075200 -14 2246  RA3LBK RQ7R +07 (x2)
073630 -20 1439  RA3LBK R3KLE 73
073700 -12 2264  RA3LBK RN6MA -14 (x2)
074100  -4  521  RA3LBK UA6YW +01
074600 -10  653  RA3LBK SV2CLJ KN10 (x3)
135900  -9 2519  RA3LBK DK7UY JO44 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee