RA7Z — 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: KN98

Receiver-side FT8 activity involving RA7Z, decoded by SO8OO in southeastern Poland. 759 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 75 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-10-23.

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 759 FT8 messages attributed to RA7Z as the transmitting token by decoded message structure across 75 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (35%), followed by 40 m (30%) and 10 m (25%). The busiest six-hour window was 12:00-18:00 UTC, containing 50% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

759

Messages attributed

UTC dates decoded

171

Active 15-min windows

-9 dB

Estimated median S/N

Bands

160m · 8 80m · 268 40m · 227 20m · 64 10m · 192

First attributed message: 2026-06-09
Last attributed message: 2026-10-23 15:50 UTC

Observed FT8 message patterns

Attributed sample: 759 messages
Active dates: 75 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -18 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 147, moderate (-15 to -9 dB) 246, strong (≥ -8 dB) 366.

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 RA7Z in decoded directed-looking exchanges:

R6DJR · European Russia ×2 R6SBN · European Russia ×2 IK1UGX · Italy IK4LZH · Italy IV3IUM · Italy R3BV · European Russia R3LDF · European Russia RK0SK · Asiatic Russia RA3RDN · European Russia RA7E/P · European Russia R0AX · Asiatic Russia R4IK · 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 RA7Z

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: KN98 · 499 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,257 km (approx.)
Last such locator decoded: 2026-10-23 15:50 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	RA7Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-23 12:01	40m	- / -18	RA3LAT	-18 / -	3	✓ Closing fragment
10-21 14:30	40m	-16 / -	R7RC	- / 0	2	Partial capture
10-20 14:25	40m	-11 / -8	RJ8C	-18 / -3	5	✓ Full exchange observed
10-20 14:18	40m	-8 / -	UG0B	- / -	2	✓ Closing fragment
10-19 06:07	40m	- / +5	UA3RBM	-20 / -	2	Partial capture
10-15 06:06	40m	- / -2	UA3WG	-13 / -	4	✓ Closing fragment
10-15 03:14	160m	-8 / -13	RA3RDN	-13 / -6	5	✓ Full exchange observed
10-15 03:13	160m	-7 / -	RA7E/P	- / -	6	✓ Closing fragment
10-14 16:06	40m	-7 / -	UA9ZZ	- / -20	3	✓ Closing fragment
10-14 16:04	40m	- / -10	R1AP	+10 / -	3	✓ Closing fragment
10-14 15:30	40m	-10 / -	UB9UZA	- / -14	4	✓ Closing fragment
10-14 15:27	40m	- / -13	R1WAB	-9 / -	3	✓ Closing fragment
10-13 16:57	40m	-16 / -	RA4CEH/P	- / -	3	Partial capture
10-13 16:50	40m	- / -15	RD7KW	+10 / -	2	✓ Closing fragment
10-12 15:30	40m	-7 / -	R4WR	-12 / -15	3	✓ Closing observed
10-12 15:29	40m	-10 / -8	R9LY	-10 / -	3	✓ Closing observed
10-12 14:15	40m	- / -7	R3KLE	-21 / -	2	✓ Closing fragment
10-12 14:04	40m	-12 / -	RA8AF	- / -9	2	✓ Closing fragment
10-12 14:03	40m	-10 / -	BG0FQU	- / -	2	Partial capture
10-12 14:01	40m	-12 / -	R9RA	- / -8	3	✓ Closing fragment
10-08 15:06	40m	- / +2	RA6FCU/P	-1 / -	2	✓ Closing fragment
10-07 15:29	80m	- / -17	RA7E	-15 / -	2	✓ Closing fragment
10-06 14:26	40m	-8 / -	R8CIS	- / -8	2	Partial capture
10-06 13:27	40m	- / -11	RZ6AGB	-12 / -	2	Partial capture
10-06 13:19	40m	- / -12	HA7TM	+8 / -	3	✓ Closing fragment
10-06 13:16	40m	- / -	UA3MLR	-18 / -	2	✓ Closing fragment
10-01 17:20	40m	- / -1	R6KY	-8 / -	3	✓ Closing fragment
10-01 17:12	40m	- / -	DL9KM	-2 / -	6	Partial capture
10-01 17:12	40m	- / -13	ON7GB	+17 / -	5	✓ Closing fragment
10-01 16:40	40m	- / -17	RZ1AS	-12 / -	3	✓ Closing fragment
10-01 16:35	40m	- / -11	RU4SO	-9 / -	3	✓ Closing fragment
09-29 04:19	40m	- / -2	RD3FY	-5 / -	3	✓ Closing fragment
09-29 04:18	40m	- / -13	UB3DQR	-11 / -	3	✓ Closing fragment
09-29 03:59	40m	- / -10	R3MW	-12 / -	3	✓ Closing fragment
09-27 14:28	40m	- / -17	R2EA/P	-2 / -	2	✓ Closing fragment
09-27 14:06	40m	- / +1	RN3QTA	-15 / -	2	✓ Closing fragment
09-23 16:59	40m	- / -9	R6DJR	+5 / -	2	✓ Closing fragment
09-23 16:53	40m	0 / -3	RA4ABH	+3 / -	3	Partial capture
09-23 16:50	40m	-4 / +9	R7KCK	+2 / -	6	✓ Closing observed
09-22 16:24	80m	-16 / -	RI1FJZ	- / -	27	Partial capture
09-22 16:20	80m	-15 / -	RI1FJZ	- / -	4	Partial capture
09-22 16:06	80m	-15 / -	RI1FJZ	- / -	15	Partial capture
09-22 16:02	80m	-23 / -	RI1FJZ	- / -	2	Partial capture
09-22 16:00	40m	-12 / -	UC6B	- / 0	2	Partial capture
09-22 15:58	40m	-9 / -8	R6SBN	-1 / -	4	✓ Closing observed
09-22 15:47	80m	-13 / -	RI1FJZ	- / -	24	Partial capture
09-21 15:56	80m	-6 / -	RI1FJZ	- / -	62	Partial capture
09-21 15:46	80m	-3 / -	RI1FJZ	- / -	11	Partial capture
09-20 16:22	80m	0 / -	RI1FJZ	- / -	22	Partial capture
09-20 16:11	80m	+3 / -	RI1FJZ	- / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
142545 -19 1796  RA7Z RJ8C -08
142600 -11 2652  RJ8C RA7Z R-03
142615 -17 1795  RA7Z RJ8C RR73
142630 -11 2652  RJ8C RA7Z 73
143045 -12 2652  RZ9O RA7Z KN98
143000 -18 1157  R7RC RA7Z KN98 (x2)
143445 -21 1157  R4KB RA7Z KN98
144030 -17 1158  SV8/SV1TQB RA7Z KN98
115700 -13  381  R3KF RA7Z KN98
120115 -21 1371  RA7Z RA3LAT KO65 (x3)
152315 -14 2181  RA7Z UA4WCS -12
155000 -16 2180  EP2AES RA7Z KN98

80m

UTC    dB Audio  Message
163545 -12  597  RI1FJZ RA7Z KN98 (x9)
152945 -16 1704  RA7Z RA7E -17 (x2)
153215 -19 1927  RA7Z UA3ZMQ +01
161045  -6 1587  RA7Z RD7P RR73
164130 -17 2175  RA7Z UA3QQG RR73
155915 -11  521  RA4CQW/P RA7Z KN98

160m

UTC    dB Audio  Message
031345  -4  692  RA7E/P RA7Z KN98 (x2)
031430 -14 1318  RA7Z RA3RDN LO02
031445  -7  800  RA7E/P RA7Z KN98 (x3)
031615  -8  800  RA3RDN RA7Z -06
031630 -11 1317  RA7Z RA3RDN R-13
031645  -7  800  RA3RDN RA7Z RR73
031700 -13 1317  RA7Z RA3RDN 73
031745 -10  800  RA7E/P RA7Z 73

20m

UTC    dB Audio  Message
151130 -23 2181  R0AX RA7Z RR73
151545  +3 2577  RA7Z IU4COO JN63 (x3)
160930  -5  421  RA7Z <...> -16 (x2)
213315 -18 1783  R6FMF RA7Z KN98
130415  +0  416  <...> RA7Z KN98 (x2)
131030 -10  417  <RW9H/M> RA7Z KN98 (x3)
083600 -18  966  ZA/IK3BNO RA7Z KN98 (x2)
084030 -10 2803  R3BCK RA7Z KN98

10m

UTC    dB Audio  Message
105645  +9  492  RA7Z IK4LZH R-05 (x2)
105945 -18 1371  RA7Z R6DJR RR73
081745 -23 1383  CQ RA7Z KN98
082800  -9 2555  R2EN RA7Z KN98
083300 -13 2557  R3BV RA7Z RR73
083600 -15 2558  CQ RA7Z KN98
130300 -11  841  <...> RA7Z R-02 (x4)
130830 -14 2246  IV3IUM RA7Z -14 (x2)
131130 -17 2335  R3LDF RA7Z 73
083100  +4 1252  RA7Z RR73; DG4MCB <...> -12

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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