RZ3Z — 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: KO80

Receiver-side FT8 activity involving RZ3Z, decoded by SO8OO in southeastern Poland. 218 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-11-05.

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 218 FT8 messages attributed to RZ3Z as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (81%), followed by 20 m (11%) and 40 m (8%). Most decodes (78%) fell within the six-hour window 09:00-15:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +8 dB.

Overview

218

Messages attributed

UTC dates decoded

Active 15-min windows

+8 dB

Estimated median S/N

Bands

40m · 18 20m · 23 10m · 177

First attributed message: 2026-06-13
Last attributed message: 2026-11-05 21:12 UTC

Observed FT8 message patterns

Attributed sample: 218 messages
Active dates: 9 UTC dates
Estimated median S/N: +8 dB
Estimated 10th-90th percentile: -10 to +17 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 8, moderate (-15 to -9 dB) 17, strong (≥ -8 dB) 193.

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 RZ3Z in decoded directed-looking exchanges:

CT7BRV · Portugal DD3ZZ · Fed. Rep. of Germany EA5JLB · Spain EA8RY · Canary Islands HA3HZ · Hungary R2ZAA · European Russia R6OBN · European Russia RD3FY · European Russia UA4WGS · European Russia YO8AJG · Romania

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 RZ3Z

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 · 61 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,082 km (approx.)
Last such locator decoded: 2026-11-05 21:11 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	RZ3Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-05 21:11	40m	-11 / -6	DD3ZZ	-3 / -19	5	✓ Full exchange observed
11-05 21:09	40m	-4 / -2	HA3HZ	-5 / -8	5	✓ Full exchange observed
11-05 21:08	40m	-11 / -	YO8AJG	- / -12	2	✓ Closing fragment
11-05 21:07	40m	0 / -	RD3FY	-10 / -	4	✓ Closing observed
11-05 21:06	40m	-2 / -	R6OBN	- / -	2	✓ Closing fragment
11-05 21:03	40m	- / -	DK8HC	-18 / -	2	Partial capture
11-05 21:02	40m	-3 / -	R2ZAA	- / +9	2	✓ Closing fragment
11-05 21:00	40m	-12 / -	UA4WGS	- / -16	2	✓ Closing fragment
10-31 21:27	40m	- / -10	CT7BRV	-13 / -	2	✓ Closing fragment
10-31 21:10	40m	- / -1	EA5JLB	-11 / -	2	✓ Closing fragment
10-31 20:40	40m	- / -	EA2EDI	-13 / -	3	Partial capture
08-25 17:36	20m	-5 / -24	RZ3Z/P	+5 / -6	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
210730  +1 2782  RD3FY RZ3Z +15 (x2)
210815 -11 2781  RZ3Z RD3FY 73
210830 -12 1525  YO8AJG RZ3Z -12 (x2)
210915  -7  335  RZ3Z HA3HZ JN96
210930  -3  335  HA3HZ RZ3Z -08
210945  -5  335  RZ3Z HA3HZ R-02
211000  -5  335  HA3HZ RZ3Z RR73
211015  -3  335  RZ3Z HA3HZ 73
211145 -12 1279  DD3ZZ RZ3Z KO80
211200  -2 1279  RZ3Z DD3ZZ -06
211215 -12 1279  DD3ZZ RZ3Z R-19
211230  -4 1279  RZ3Z DD3ZZ RRR
211245  -8 1279  DD3ZZ RZ3Z 73

20m

UTC    dB Audio  Message
180400  -2  381  RZ3Z YO1BRANCUSI -17
173600  +8 1756  RZ3Z RZ3Z/P -24 (x3)
173715  -5 1755  RZ3Z/P RZ3Z R-06 (x3)

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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