RK3BM — 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 RK3BM, decoded by SO8OO in southeastern Poland. 464 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 36 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-22.

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 464 FT8 messages attributed to RK3BM as the transmitting token by decoded message structure across 36 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (48%), followed by 40 m (25%) and 80 m (13%). Most decodes (87%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

464

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

160m · 224 80m · 61 40m · 114 20m · 31 10m · 34

First attributed message: 2026-06-08
Last attributed message: 2026-10-22 20:43 UTC

Observed FT8 message patterns

Attributed sample: 464 messages
Active dates: 36 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -17 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 71, moderate (-15 to -9 dB) 144, strong (≥ -8 dB) 249.

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 RK3BM in decoded directed-looking exchanges:

R4RZ · European Russia ×2 SV2AEL · Greece ×2 R8CW · Asiatic Russia ×2 CR7BRV · Portugal EA6UE · Balearic Islands PT7YV · Brazil RD7P · European Russia 8S2A · Sweden DD7EE · Fed. Rep. of Germany G3UHU · England G4ITR · England HA5AO · Hungary

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 RK3BM

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 · 202 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,193 km (approx.)
Last such locator decoded: 2026-10-22 20:41 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	RK3BM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 21:29	40m	- / +9	ON8WR	-16 / -	2	✓ Closing fragment
10-22 20:41	160m	-5 / +1	R5AV	+5 / -	2	✓ Closing observed
10-22 20:41	160m	-5 / -12	R6DSW	-14 / -18	4	✓ Full exchange observed
10-22 20:36	160m	-9 / -7	OH4TQ	+4 / -10	5	✓ Full exchange observed
10-22 20:33	160m	-8 / -9	ON6LEO	+4 / -7	5	✓ Full exchange observed
10-22 20:26	160m	-6 / -	R1QF/P	- / -	3	Partial capture
10-22 20:25	160m	-5 / -	UA4FKT	- / -7	2	✓ Closing fragment
10-22 20:21	160m	-4 / -13	R2EA/P	-7 / -16	4	✓ Full exchange observed
10-22 20:20	160m	0 / -	OH5BM	- / -	2	Partial capture
10-22 20:17	160m	-2 / -11	UB1CCL	+7 / -13	6	✓ Full exchange observed
10-22 20:11	160m	-11 / -	R6DAZ	- / -2	2	✓ Closing fragment
10-22 17:31	40m	+2 / -	R6KY	- / -8	2	Partial capture
10-22 17:29	40m	+6 / -	EA3HLM	- / -18	2	Partial capture
10-22 17:28	40m	+6 / -13	UB6OCP	-6 / -15	3	✓ Full exchange observed
10-22 17:26	40m	-2 / -3	PE9JAN	-4 / -12	5	✓ Full exchange observed
10-22 17:24	40m	-4 / -	UA9SHH	- / -18	3	Partial capture
10-22 17:23	40m	+2 / -	RA9SOZ	- / -13	3	✓ Closing fragment
10-16 20:27	40m	- / -18	HB9ELE	+3 / -	3	✓ Closing fragment
10-16 00:22	40m	- / +7	F5OYA/P	-11 / -	3	✓ Closing fragment
10-12 20:31	40m	- / -	IV3IHV	-4 / -	2	✓ Closing fragment
10-07 21:03	160m	-8 / -12	UA1ANA	-11 / -2	4	✓ Full exchange observed
10-07 21:00	160m	-12 / -11	OM2WQ	+10 / -7	5	✓ Full exchange observed
10-07 20:57	160m	-11 / 0	OM3TWM	+10 / -7	4	✓ Full exchange observed
10-07 20:29	160m	-10 / -7	RA7T	-9 / -6	4	✓ Full exchange observed
10-07 04:15	40m	-7 / -	C5R	- / -16	5	Partial capture
10-06 20:33	40m	-7 / -	G7RCQ	- / -16	3	✓ Closing fragment
10-06 20:31	40m	-11 / -8	II5GG	-11 / -18	4	✓ Full exchange observed
10-06 20:28	40m	-7 / -	RN2F	- / -7	3	✓ Closing fragment
10-06 20:21	40m	-20 / -5	DL6EI	-11 / -10	4	✓ Full exchange observed
10-06 20:20	40m	-18 / -6	G5NGL	+2 / -	3	✓ Closing observed
10-05 22:12	40m	- / -13	K1ZZ	+2 / -	2	✓ Closing fragment
10-04 20:24	40m	-3 / -	9A3MRN	- / -8	3	✓ Closing fragment
10-02 22:27	40m	-6 / -	NP2GG	- / -	2	Partial capture
10-02 22:08	40m	-2 / -	W3GO	- / -22	4	✓ Closing fragment
10-02 21:48	40m	- / -	F6FHZ	-8 / -	5	Partial capture
10-02 21:47	40m	-16 / -	KG2H	- / -23	2	✓ Closing fragment
10-02 21:38	40m	-1 / -	KG2H	- / -	4	Partial capture
10-02 21:35	40m	-8 / -	W2CG	- / -19	3	Partial capture
10-02 21:31	40m	-10 / -	K1VMT	- / -	2	Partial capture
10-02 21:24	40m	-14 / -	RD0L	- / -26	5	Partial capture
09-27 20:52	160m	-12 / -	UA1A	- / -	2	Partial capture
09-27 20:26	160m	0 / -6	SP3CUG	+5 / -15	5	✓ Full exchange observed
09-27 20:24	160m	0 / -	DL1RWN	- / -	2	Partial capture
09-27 20:19	160m	-6 / -	R8LCA	- / -17	3	✓ Closing fragment
09-27 20:16	160m	-10 / -18	R4RZ	-24 / -9	5	✓ Full exchange observed
09-27 20:12	160m	- / -	SP3ATB	0 / -	2	Partial capture
09-27 20:11	160m	+2 / -2	HA5AO	+11 / -10	5	✓ Full exchange observed
09-27 17:25	40m	+2 / -	RA4CIY	-14 / -10	4	✓ Closing observed
09-27 17:22	40m	-7 / -	RW6HPI	-3 / -	2	✓ Closing observed
09-27 17:17	40m	0 / -	R1BPQ	- / -6	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
172600  -2 2138  UA9SHH RK3BM R-18
172645  -8 2066  RK3BM PE9JAN JO22
172700  +0 2067  PE9JAN RK3BM -12
172715  -4 2066  RK3BM PE9JAN R-03
172730  -4 2067  PE9JAN RK3BM RR73
172745  -1 2066  RK3BM PE9JAN 73
172800  +7 2419  UB6OCP RK3BM -15
172815  -6 2418  RK3BM UB6OCP R-13
172830  +6 2419  UB6OCP RK3BM RR73
172930  +6 2418  EA3HLM RK3BM R-18 (x2)
173100  +1 2007  R6KY RK3BM -08 (x2)
212930 -18 1225  RK3BM ON8WR +09 (x2)

160m

UTC    dB Audio  Message
203430  -4 2056  ON6LEO RK3BM 73
203630  -7 2465  OH4TQ RK3BM KO85
203645  +4 2464  RK3BM OH4TQ -07
203700 -11 2465  OH4TQ RK3BM R-10
203715  +4 2464  RK3BM OH4TQ RR73
203730  -9 2465  OH4TQ RK3BM 73
203915  -1  792  R5WW RK3BM KO85
204045  -4  791  CQ RK3BM KO85 (x2)
204130 -13 2013  RK3BM R6DSW KN85
204130  +5  792  RK3BM R5AV +01
204215  -5  792  R5AV RK3BM 73
204245  -4  792  R6DSW RK3BM -18
204300 -16 2013  RK3BM R6DSW R-12
204315  -6  792  R6DSW RK3BM RR73

10m

UTC    dB Audio  Message
203745  -9 1583  RK3BM PT7YV -16 (x2)
114745 -23 1691  EA6UE RK3BM KO85
114800 -21 1691  RK3BM EA6UE -02 (x2)
114845 -22 1691  EA6UE RK3BM 73
071300 -10 2097  RK3BM RD7P -02 (x3)
123345  +6  763  RK3BM CR7BRV -13 (x2)

80m

UTC    dB Audio  Message
212400 -14  415  RK3BM UB3ANV RR73
212415  +6  416  UB3ANV RK3BM 73
202945 -15 2325  RK3BM RA9SJG -01 (x2)
203030  +5 2327  RA9SJG RK3BM 73
203115 -15 3116  RK3BM RA6YDX LN04
203145  -2 2188  R3PLN RK3BM KO85 (x2)
203300  -5 2187  RK3BM R3PLN RR73
203315  -6 2188  R3PLN RK3BM 73
230230  +2 2210  PI4DX RK3BM KO85
230245  +0 2209  RK3BM PI4DX +06
230300  +5 2210  PI4DX RK3BM R+02
230315  -5 2209  RK3BM PI4DX RR73
230330  +3 2209  PI4DX RK3BM 73

20m

UTC    dB Audio  Message
091230 -15 1064  RK3BM G4RCV +12
225245 -19 2152  NF3R RK3BM KO85 (x2)
205100 +10 2279  RK3BM ON5GQ -04
205115 -22 1291  ON5GQ RK3BM R-04
205130 +12 2279  RK3BM ON5GQ RR73
205330  +9 1957  RK3BM DF3VG JN48 (x3)
205830  -4  371  RK3BM N2LQH -15
205915 -11  370  N2LQH RK3BM R-15
210230  -5 2402  N1SK RK3BM KO85 (x2)
210700 -15 1080  WY5I RK3BM KO85 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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