RN3ZBX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO90

Receiver-side FT8 activity involving RN3ZBX, decoded by SO8OO in southeastern Poland. 2,343 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 73 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-17.

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 2,343 FT8 messages attributed to RN3ZBX as the transmitting token by decoded message structure across 73 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (59%), followed by 20 m (34%) and 80 m (5%). Most decodes (65%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

2,343

Messages attributed

UTC dates decoded

371

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 114 40m · 1,387 20m · 789 10m · 53

First attributed message: 2026-06-07
Last attributed message: 2026-09-17 16:40 UTC

Observed FT8 message patterns

Attributed sample: 2,343 messages
Active dates: 73 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -18 to +6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 386, moderate (-15 to -9 dB) 714, strong (≥ -8 dB) 1,243.

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 RN3ZBX in decoded directed-looking exchanges:

HB9MZI · Switzerland ×2 RK4CH · European Russia ×2 RK6J · European Russia ×2 UD7G · European Russia ×2 OA4ENG · Peru ×2 R6ML · European Russia ×2 RA8AF · Asiatic Russia ×2 RC6OZ · European Russia ×2 RM3ZR · European Russia ×2 RU4B · European Russia ×2 RV6HE · European Russia ×2 RW3ZC · European Russia ×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 RN3ZBX

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: KO90 · 1,015 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,223 km (approx.)
Last such locator decoded: 2026-09-17 16:40 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	RN3ZBX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 16:43	40m	- / -	RA2FGK	0 / -	3	Partial capture
09-17 16:07	80m	-8 / -5	UA6JQ	-18 / -7	5	✓ Full exchange observed
09-17 16:07	80m	-11 / -	RX6LG	-5 / -6	4	✓ Closing observed
09-17 05:36	40m	-9 / -	DG1KDD	- / -	5	Partial capture
09-17 05:33	40m	-9 / -2	RA3YAO	-11 / +5	4	✓ Full exchange observed
09-17 05:30	40m	-12 / -	R3NAW	- / -	2	✓ Closing fragment
09-17 05:27	40m	-5 / +3	DF7QR	-4 / -13	5	✓ Full exchange observed
09-17 05:26	40m	-3 / -1	SP6AXW	-14 / -21	4	Partial capture
09-17 05:24	40m	-13 / -2	F5ADE	-5 / -8	5	✓ Full exchange observed
09-16 13:07	40m	-8 / -	SQ9PBR	- / -8	3	✓ Closing fragment
09-16 13:05	40m	-10 / -	RK3DJW	- / +1	2	✓ Closing fragment
09-16 13:01	40m	-8 / -	RA0AB	- / -20	3	✓ Closing fragment
09-16 12:59	40m	-12 / -	R0WC	- / -17	4	Partial capture
09-16 12:57	40m	-7 / -3	YO3CNW	-11 / -9	5	✓ Full exchange observed
09-16 12:56	40m	-6 / -	RU3AMO	-4 / 0	5	✓ Full exchange observed
09-16 04:48	40m	-4 / -9	F4CVQ	+4 / -	2	Partial capture
09-16 04:35	40m	- / -	HK3TY	-12 / -	2	✓ Closing fragment
09-16 04:31	40m	-4 / -14	HK3TY	-15 / -22	4	Partial capture
09-16 04:27	40m	-2 / -	ES1BH	-7 / -15	7	✓ Full exchange observed
09-16 04:09	40m	-11 / -	R9LY	- / -14	2	✓ Closing fragment
09-16 01:10	40m	- / -12	EA1AA	-14 / -	2	✓ Closing fragment
09-13 01:53	40m	-18 / -	F4DVP	- / -15	2	✓ Closing fragment
09-13 01:47	40m	- / -15	EH1SDC	-10 / -	2	Partial capture
09-12 04:51	40m	+4 / -	OK1HEH	- / -18	2	✓ Closing fragment
09-12 04:50	40m	+2 / -10	RA6OD	+3 / -2	3	✓ Full exchange observed
09-12 04:49	40m	+2 / -	4Z5NN	- / -	2	Partial capture
09-12 04:47	40m	+4 / -	RA1NBG	- / -	2	Partial capture
09-12 04:45	40m	-1 / -	YO3RU	- / -	2	Partial capture
09-12 04:43	40m	+3 / -	UB3ADO/P	- / -13	3	✓ Closing fragment
09-12 04:29	40m	0 / -	RA9SVO	- / -8	2	✓ Closing fragment
09-12 04:26	40m	+4 / -	UF6V/UA5D	- / -12	2	Partial capture
09-12 04:23	40m	-1 / -	9A7PCR	- / -22	4	✓ Closing fragment
09-12 04:22	40m	-4 / -12	RU3KO	-1 / -13	4	✓ Full exchange observed
09-12 04:19	40m	-2 / -	F4IFO	- / -	3	Partial capture
09-12 04:18	40m	-2 / -	R3BGU	- / -1	2	✓ Closing fragment
09-12 04:17	40m	+2 / -10	EA2DYB	-4 / -19	5	✓ Full exchange observed
09-10 17:30	80m	-2 / -2	UD7G	0 / -2	5	✓ Full exchange observed
09-10 17:30	80m	-3 / -2	OM1II	+10 / -	5	✓ Closing observed
09-10 17:26	80m	- / -3	YO6LM	+13 / -	4	✓ Closing fragment
09-10 17:23	80m	-8 / -16	R70SAB	-7 / -15	3	Partial capture
09-10 17:15	80m	-4 / -5	RK4F	-4 / -14	4	✓ Full exchange observed
09-10 17:11	80m	-4 / -4	R4DD	0 / -3	4	✓ Full exchange observed
09-10 17:10	80m	-6 / -	YO6LM	+11 / -18	4	Partial capture
09-10 17:08	80m	-2 / -11	R6ZCE	-3 / -6	5	✓ Full exchange observed
09-10 17:08	80m	-1 / -13	RM5F	+6 / -	5	✓ Closing observed
09-10 17:07	80m	-4 / -5	UA3IDQ	-18 / -14	4	✓ Full exchange observed
09-10 17:04	80m	-14 / -	R4IK	-6 / -9	3	✓ Closing observed
09-10 17:03	80m	- / -4	R6ZCE	-10 / -	2	Partial capture
09-10 17:02	80m	-12 / -	RM3ZR	+5 / -	3	✓ Closing observed
09-10 16:58	80m	-6 / -5	R6ODX	+4 / -5	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
053330 -12 1947  RN3ZBX RA3YAO -02
053345  -7 1577  RA3YAO RN3ZBX R+05
053400 -10 1947  RN3ZBX RA3YAO RR73
053415 -11 1578  RA3YAO RN3ZBX 73
053630  -9 1578  DG1KDD RN3ZBX KO90 (x5)
155115  +2 1914  RZ9A RN3ZBX KO90
163615  +6 1914  RA2FGK RN3ZBX KO90
164015  +1 1914  RZ9A RN3ZBX KO90
164330  +0  720  RN3ZBX RA2FGK +18 (x3)

80m

UTC    dB Audio  Message
173100  -2  995  UD7G RN3ZBX R-02
173115  +2  384  RN3ZBX UD7G RR73
173115  +7 2300  RN3ZBX OM1II -02
173145  +0  384  RN3ZBX UD7G RR73
173145  +8 2300  RN3ZBX OM1II RR73 (x2)
160700  -9 1878  RX6LG RN3ZBX KO90 (x2)
160745 -20 1267  RN3ZBX UA6JQ -05
160745  -5 2629  RN3ZBX RX6LG RR73
160800 -11 1878  RX6LG RN3ZBX 73
160815 -15 1268  RN3ZBX UA6JQ -03
160830  -8 1878  UA6JQ RN3ZBX R-07
160845 -19 1268  RN3ZBX UA6JQ RR73
160900  -9 1878  UA6JQ RN3ZBX 73

20m

UTC    dB Audio  Message
174800 -17 1915  RN3ZBX OE8RPK JN76 (x3)
082745  -8 1372  M0XCZ RN3ZBX KO90 (x2)
082945  +1 1372  RA9YTI RN3ZBX KO90 (x3)
083100  -9 1512  RN3ZBX RW9WJ LO84
083115  -5 1372  RA9YTI RN3ZBX 73
083130 -10 1512  RN3ZBX RW9WJ LO84 (x2)
083215  -5 1372  RW9WJ RN3ZBX RR73
083230 -12 1512  RN3ZBX RW9WJ 73
083315  -8 1372  9A5JU RN3ZBX KO90

10m

UTC    dB Audio  Message
195245  -8 2146  RL3DD RN3ZBX -10
195315  -8 2146  CQ RN3ZBX KO90
195345  -9 2146  UA6JQ RN3ZBX R-04
195645  -9 2260  OZ2BMN RN3ZBX KO90
195715 -11 2260  LU8GCJ RN3ZBX KO90 (x3)
195915 -11 2260  IQ4JO RN3ZBX -08 (x2)
200145  -7 2260  LU8GCJ RN3ZBX KO90 (x4)
201445  -7 2260  F8BQF RN3ZBX KO90
125700 -22 1884  CQ RN3ZBX KO90

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