R3ZBR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO80

Receiver-side FT8 activity involving R3ZBR, decoded by SO8OO in southeastern Poland. 875 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 39 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-20.

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 875 FT8 messages attributed to R3ZBR as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (44%), followed by 80 m (26%) and 20 m (26%). Several six-hour UTC windows tied for the largest share (81%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (83%); the estimated median was -1 dB.

Overview

875

Messages attributed

UTC dates decoded

115

Active 15-min windows

-1 dB

Estimated median S/N

Bands

80m · 228 40m · 383 20m · 226 10m · 38

First attributed message: 2026-06-07
Last attributed message: 2026-09-20 18:38 UTC

Observed FT8 message patterns

Attributed sample: 875 messages
Active dates: 39 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -11 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 31, moderate (-15 to -9 dB) 118, strong (≥ -8 dB) 726.

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 R3ZBR in decoded directed-looking exchanges:

G4DBW · England ×2 E77EA · Bosnia-Herzegovina ×2 EA1IOK · Spain ×2 IZ3ZPO · Italy ×2 RT2P · European Russia ×2 UB0SMX/P · Asiatic Russia ×2 HA7TM · Hungary ×2 R3DBX · European Russia ×2 RA2FU · Kaliningrad ×2 RC1BQ · European Russia ×2 R6TA · European Russia RL1B · 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 R3ZBR

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: KO80 · 220 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,082 km (approx.)
Last such locator decoded: 2026-09-20 18:37 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	R3ZBR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 18:37	40m	+4 / -	LZ7DX	- / 0	2	Partial capture
09-20 18:36	40m	+9 / -11	DL9KM	-2 / -11	5	✓ Full exchange observed
09-20 18:33	40m	+8 / -	IZ3ZPO	+12 / +3	3	✓ Closing observed
09-20 18:30	40m	+4 / -	GD4EIP	- / -6	4	Partial capture
09-20 18:26	40m	+5 / -	UA6XDA	- / -12	4	✓ Closing fragment
09-20 18:23	40m	+11 / -	UF8F	- / -14	2	Partial capture
09-20 18:22	40m	+8 / -	BH8SDS	- / -25	2	Partial capture
09-20 18:20	40m	+7 / -6	R7KJG	-14 / -4	7	✓ Full exchange observed
09-20 18:16	40m	+10 / -	RA6LTD	+2 / +8	4	✓ Full exchange observed
09-20 18:15	40m	+3 / -15	UC6W	-15 / -14	4	✓ Full exchange observed
09-20 18:08	80m	+6 / -	RA3TRR	- / -11	2	✓ Closing fragment
09-20 18:03	80m	+8 / -	RA4CX	- / +1	5	Partial capture
09-20 18:00	80m	+14 / -	IW7DKS	- / -7	3	Partial capture
09-20 17:56	80m	- / -11	IZ3ZPO	+10 / -	3	✓ Closing fragment
09-20 17:50	80m	-6 / -9	RC1BQ	-3 / +2	4	✓ Full exchange observed
09-20 17:48	80m	+2 / -	RW4LMR	- / -2	2	✓ Closing fragment
09-20 17:43	80m	-9 / -	RW4HBD	- / -5	2	✓ Closing fragment
09-20 17:42	80m	-5 / -	UD3T	-16 / -13	3	✓ Closing observed
09-20 17:41	80m	+13 / -	RC1BQ	-12 / -7	2	✓ Closing observed
09-20 17:39	80m	+13 / -	R1TET	- / -17	3	✓ Closing fragment
09-17 14:58	40m	0 / -	BH8SDS	- / -9	4	Partial capture
09-17 14:57	40m	+8 / -	RW6AU	- / +5	3	✓ Closing fragment
09-17 14:54	40m	+6 / -	YB7AAE	- / -16	4	Partial capture
09-17 14:50	40m	+1 / -	BH8SDS	- / -13	5	Partial capture
09-17 14:46	40m	-2 / -	YC2BUZ	- / -19	4	Partial capture
09-17 14:45	40m	+1 / -	R8CKD	- / +2	2	✓ Closing fragment
09-17 14:45	40m	- / -	OE8PIT	-3 / -	4	Partial capture
09-17 14:43	40m	+1 / -	BI8AWT	- / -18	3	Partial capture
09-17 14:41	40m	-5 / -	YC2BUZ	- / -16	4	Partial capture
09-17 14:40	40m	0 / -	RZ7KR	-7 / +3	3	✓ Closing observed
09-17 14:38	40m	+4 / -	UA9MKA	- / -17	2	Partial capture
09-17 14:36	40m	+4 / -	BD8FOD	- / -25	3	Partial capture
09-17 14:35	40m	+1 / -	YC2BUZ	- / -19	4	Partial capture
09-17 14:33	40m	+1 / -	YE4FNN	- / -11	2	Partial capture
09-17 14:30	40m	+3 / -	UN2NC	- / -6	4	✓ Closing fragment
09-17 14:27	40m	+5 / -	EW6MP	- / +7	2	Partial capture
09-17 14:23	80m	-4 / -	RA4FHO	- / -2	2	✓ Closing fragment
09-16 19:15	80m	-2 / -	RI1FJZ	- / -19	3	Partial capture
09-16 19:09	80m	-4 / -	EH3ST	- / -15	2	Partial capture
09-16 19:02	80m	-6 / -	R4ADD	- / +1	2	Partial capture
09-16 19:02	80m	-4 / -15	IQ4JO	+8 / -16	6	✓ Full exchange observed
09-16 18:58	80m	-5 / -	RU4B	- / +10	3	✓ Closing fragment
09-16 18:57	80m	-7 / -11	RW4CB	+8 / -	4	✓ Full exchange observed
09-16 18:52	80m	-6 / -	RI1FJZ	- / -19	4	Partial capture
09-16 18:51	80m	-2 / -	EX7DY	- / -18	2	Partial capture
09-10 17:22	40m	-2 / -	Z68PX	- / -9	2	Partial capture
09-10 17:19	40m	+1 / -	IU3VQA	- / -5	3	Partial capture
09-10 17:15	80m	+12 / -2	YO6LM	+14 / +1	5	✓ Full exchange observed
09-09 06:11	40m	- / -8	RA7Z	-20 / -	2	✓ Closing fragment
09-09 06:09	40m	0 / -4	EU7FBB	-2 / +3	3	✓ 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
183000  +3 3056  GD4EIP R3ZBR -06 (x4)
183315 +12  684  R3ZBR IZ3ZPO JN55
183330  +6 3056  IZ3ZPO R3ZBR +03 (x2)
183530  +8 3056  EA3AAY R3ZBR RR73
183600  +7 3056  DL9KM R3ZBR -11 (x2)
183645  -1 1708  R3ZBR DL9KM R-11
183700 +10 3057  DL9KM R3ZBR RR73
183715  -3 1708  R3ZBR DL9KM 73
183745  +6 3057  LZ7DX R3ZBR KO80 (x2)

80m

UTC    dB Audio  Message
180030 +13 2900  IW7DKS R3ZBR KO80 (x3)
180230  +8 2900  EA5DKT R3ZBR -17
180330 +11 2906  RA4CX R3ZBR +01 (x5)
180645  +1 2906  CQ R3ZBR KO80 (x2)
180815  +9 2906  UC1I R3ZBR -08
180845  +1 2906  RA3TRR R3ZBR -11 (x2)
181045  +4 2906  CQ R3ZBR KO80

20m

UTC    dB Audio  Message
204845 -15 3109  CQ R3ZBR KO80
210845 -13 2853  IZ1HJU R3ZBR -08
210945 -13 2853  TJ1GD R3ZBR -08
211545 -10 2926  HK3C R3ZBR -14
205000 -13 1885  R3ZBR PY3RK R-13 (x2)
190800 -11 2105  R3ZBR EA8BFH R-13
184645 -11 3079  EA9QD R3ZBR -21 (x2)
184745  -7 3079  7X2KF R3ZBR KO80
184815 -11 3079  EA9QD R3ZBR KO80 (x3)
190015 -14 3081  JA5ROH/P R3ZBR -25 (x2)

10m

UTC    dB Audio  Message
192645 -18 1983  R3ZBR YL3CW KO36
192700  -6 2389  YL3CW R3ZBR +01 (x2)
192800  -5 2388  RL1B R3ZBR R-02
192815  -9 2388  R3ZBR RL1B -14
192830  -3 2387  YL3CW R3ZBR +11
192845  -4 2388  R3ZBR RL1B -14
192900  -4 2386  RL1B R3ZBR R-02
192915  -8 2387  R3ZBR RL1B RR73
192915  -5  826  R3ZBR R6TA LN13
192930  +0 2385  RL1B R3ZBR 73
192945  -7  826  R3ZBR R6TA LN13 (x2)
193030  -2 2385  R6TA R3ZBR RR73
193045  -9  826  R3ZBR R6TA 73

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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