RA3ZQ — 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 RA3ZQ, decoded by SO8OO in southeastern Poland. 158 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 9 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-13.

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 158 FT8 messages attributed to RA3ZQ as the transmitting token by decoded message structure across 9 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (65%), followed by 40 m (30%) and 10 m (5%). Most decodes (63%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

158

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 47 20m · 103 10m · 8

First attributed message: 2026-06-06
Last attributed message: 2026-09-13 18:17 UTC

Observed FT8 message patterns

Attributed sample: 158 messages
Active dates: 9 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -21 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 44, moderate (-15 to -9 dB) 47, strong (≥ -8 dB) 67.

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 RA3ZQ in decoded directed-looking exchanges:

3A2MW · Monaco A71QQ · Qatar R3BV · European Russia R4FDW · European Russia R5AV · European Russia RC6OX · European Russia RL3QGD · European Russia SP5ROM · Poland TF5B · Iceland UA4FKT · European Russia UA6EU · European Russia YT3PL · Serbia

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 RA3ZQ

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 · 45 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,223 km (approx.)
Last such locator decoded: 2026-09-13 17:53 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	RA3ZQ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 18:17	40m	-5 / -12	RA6OD	-6 / -5	3	✓ Full exchange observed
09-13 18:00	40m	-2 / -	R7GA	-6 / -	2	✓ Closing observed
09-13 17:58	40m	-8 / -	UB3FBD	- / -13	2	✓ Closing fragment
09-13 17:56	40m	-11 / -	YO3GJE	- / -20	3	✓ Closing fragment
07-06 17:37	20m	- / -	R4DI	-9 / -	2	Partial capture
07-06 17:34	20m	-6 / -	PD2LEO	- / -	3	Partial capture
07-06 17:33	20m	-6 / -	JH4VTV	- / -	2	Partial capture
07-06 17:30	20m	0 / +1	A71QQ	-6 / -10	4	✓ Full exchange observed
07-06 17:21	40m	-8 / -	RU4SS	- / -12	2	✓ Closing fragment
07-06 17:20	40m	-12 / -	RA3V	- / -15	2	✓ Closing fragment
07-06 17:16	40m	-14 / -	UA3UBV	- / -13	2	✓ Closing fragment
07-06 17:15	40m	-10 / -	RM4N	- / -11	2	✓ Closing fragment
07-06 17:14	40m	-12 / -	RD3TBQ	- / 0	2	Partial capture
07-06 17:13	40m	-11 / -	R8OAE	- / -12	2	✓ Closing fragment
07-06 17:11	40m	-14 / -	R8CEG	- / -15	4	✓ Closing fragment
07-06 17:06	40m	-11 / -	LY3BFH	-9 / -3	4	✓ Closing observed
07-06 17:03	40m	-2 / -	R3ICU	- / -15	3	✓ Closing fragment
07-06 17:02	40m	0 / -	R8CW	- / -7	2	✓ Closing fragment
07-06 17:01	40m	-1 / -	BD7OH	- / -18	2	Partial capture
07-06 17:00	40m	-4 / -	BA5AG	- / -13	2	✓ Closing fragment
07-06 16:57	40m	-4 / -	RA5AK	- / -4	2	✓ Closing fragment
07-06 16:56	40m	-9 / -	RA4HEV	- / -11	2	✓ Closing fragment
06-26 12:40	20m	-19 / -	3A2MW	- / -21	5	✓ Closing fragment
06-26 12:38	20m	-15 / -	BG3TFT	- / -	2	Partial capture
06-26 12:35	20m	-16 / -	SP5ROM	- / -7	3	✓ Closing fragment
06-25 11:17	20m	-14 / -	RL3QGD	- / -15	3	✓ Closing fragment
06-25 10:19	20m	-21 / -	UA6EU	- / -12	2	✓ Closing fragment
06-25 10:17	20m	-22 / -	R4FDW	- / -8	2	✓ Closing fragment
06-25 10:12	20m	-20 / -13	YT3PL	-17 / -	4	✓ Closing observed
06-25 10:12	20m	-20 / -	R3BV	-12 / -1	2	✓ Closing observed
06-25 10:11	20m	-17 / -15	TF5B	-18 / -18	6	✓ Full exchange observed
06-25 10:07	20m	-22 / -	RU3XW	- / -13	2	Partial capture
06-25 10:06	20m	-19 / -	R5AV	-17 / -16	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
172115 -12 2378  RA3V RA3ZQ RR73
172145 -11 2378  RU4SS RA3ZQ -12 (x2)
175300  -2 1891  YO3GJE RA3ZQ KO90 (x4)
175830 -12 1891  UB3FBD RA3ZQ -13
175845  -6 1891  RA3ZQ DH5WB JO50
175900  -5 1892  UB3FBD RA3ZQ RR73
180000  -2 2031  R7GA RA3ZQ RR73
180015  -6 2031  RA3ZQ R7GA 73
181730  -5  879  RA6OD RA3ZQ -05
181745  -7  880  RA3ZQ RA6OD R-12 (x2)

20m

UTC    dB Audio  Message
124130 -18 1300  3A2MW RA3ZQ -21 (x3)
124400 -16 1214  KF0YOB RA3ZQ KO90
173045  -5  707  RA3ZQ A71QQ +01
173100  +0 2616  A71QQ RA3ZQ R-10
173115  -7  707  RA3ZQ A71QQ RR73
173130  +0 2616  A71QQ RA3ZQ 73
173300  -8 2616  JH4VTV RA3ZQ KO90 (x2)
173445  -2 2615  PD2LEO RA3ZQ KO90 (x3)
173700  -9 2448  RA3ZQ R4DI +11 (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.

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