RZ3DW — 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: KO84

Receiver-side FT8 activity involving RZ3DW, decoded by SO8OO in southeastern Poland. 2,748 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 93 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-19.

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 2,748 FT8 messages attributed to RZ3DW as the transmitting token by decoded message structure across 93 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (35%), followed by 80 m (26%) and 40 m (26%). Most decodes (81%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (86%); the estimated median was +4 dB.

Overview

2,748

Messages attributed

UTC dates decoded

347

Active 15-min windows

+4 dB

Estimated median S/N

Bands

160m · 975 80m · 721 40m · 714 20m · 183 10m · 155

First attributed message: 2026-06-06
Last attributed message: 2026-10-19 18:41 UTC

Observed FT8 message patterns

Attributed sample: 2,748 messages
Active dates: 93 UTC dates
Estimated median S/N: +4 dB
Estimated 10th-90th percentile: -10.6 to +15 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 88, moderate (-15 to -9 dB) 301, strong (≥ -8 dB) 2,359.

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 RZ3DW in decoded directed-looking exchanges:

JA3FYC · Japan ×2 LA9H · Norway ×2 R4DD · European Russia ×2 R4FDD · European Russia ×2 R6ZEJ · European Russia ×2 R7OQ · European Russia ×2 R9CS/P · Asiatic Russia ×2 4L7T · Georgia 9K2HS · Kuwait DG0OBU · Fed. Rep. of Germany DL8GAM · Fed. Rep. of Germany E77EA · Bosnia-Herzegovina

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 RZ3DW

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: KO84 · 1,701 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,150 km (approx.)
Last such locator decoded: 2026-10-19 18:41 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	RZ3DW S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-18 19:13	160m	0 / -1	R5BS	+2 / -8	4	✓ Full exchange observed
10-18 19:08	160m	+5 / -	R7MR	- / +6	3	✓ Closing fragment
10-18 18:57	160m	+4 / -	4L7T	- / -20	5	✓ Closing fragment
10-18 18:48	160m	+2 / -	4L7T	- / -16	7	Partial capture
10-18 18:45	160m	-4 / -11	DL8GAM	-12 / -25	7	✓ Full exchange observed
10-18 18:43	160m	+2 / -	R4FDD	- / -11	2	✓ Closing fragment
10-18 17:41	160m	+10 / -	R9CS/P	- / -	2	Partial capture
10-18 17:40	160m	+10 / -	R8AC	- / -	3	Partial capture
10-18 17:31	160m	+16 / -	R9CS/P	- / -	2	Partial capture
10-18 17:23	160m	+7 / -	R9CS/P	- / -	9	Partial capture
10-18 17:17	160m	+9 / -2	F6AOJ	-12 / -12	5	✓ Full exchange observed
10-18 17:11	160m	+8 / -	RA3RDN	- / -3	3	✓ Closing fragment
10-18 17:02	160m	+6 / -	R9YCV	- / -16	4	Partial capture
10-16 18:48	160m	+2 / -	RN1NEB	- / -5	3	✓ Closing fragment
10-15 21:01	160m	+1 / 0	R6DAZ	-18 / +4	7	✓ Full exchange observed
10-15 20:56	160m	-1 / +2	E77EA	+10 / 0	6	✓ Full exchange observed
10-15 20:55	160m	-8 / -	R9CS/P	- / -15	4	Partial capture
10-15 20:54	160m	-9 / -1	R2ASY	-8 / +5	4	✓ Full exchange observed
10-15 20:51	80m	+14 / -	R1CBW	-6 / -13	4	✓ Closing observed
10-15 20:49	80m	+10 / -2	R6OD	+4 / +3	5	✓ Full exchange observed
10-15 20:46	80m	+15 / -	JA0CRI	- / -	2	Partial capture
10-15 20:43	80m	+14 / -	RX7O	- / -2	5	✓ Closing fragment
10-15 20:40	80m	+12 / -	JE3GRQ	- / -14	5	✓ Closing fragment
10-15 14:55	160m	+2 / -	H49A	- / -21	9	Partial capture
10-15 14:47	160m	-1 / -	R9CS/P	- / -3	13	Partial capture
10-14 18:31	160m	-7 / -11	UA1CKA	-9 / -3	5	✓ Full exchange observed
10-13 17:52	160m	- / -	IK7SHC	-9 / -	4	Partial capture
10-13 17:51	160m	+10 / -4	SV5BYP	-21 / -15	6	Partial capture
10-13 17:17	160m	+6 / -	R2FL	- / -	3	Partial capture
10-13 16:59	80m	-4 / -4	RA4P/P	-16 / -3	4	✓ Full exchange observed
10-11 17:41	160m	-6 / -	R6ZEJ	- / -10	3	✓ Closing fragment
10-11 17:35	40m	-12 / -	UA9ZZ	- / -	2	Partial capture
10-11 17:33	40m	-9 / 0	R9SDR	-16 / -3	5	✓ Full exchange observed
10-11 17:28	40m	-8 / -10	RV9CW	-18 / -2	5	✓ Full exchange observed
10-11 17:25	40m	-3 / -	UA9LLE	- / -6	3	✓ Closing fragment
10-11 17:23	40m	-11 / -	R4HAI	- / -7	3	✓ Closing fragment
10-11 17:23	40m	- / -	RX3DQX	+2 / -	2	Partial capture
10-11 17:20	40m	-4 / -	UA9CMN	- / -9	5	✓ Closing fragment
10-11 17:17	40m	-1 / -2	RW3ZC	-4 / +6	5	✓ Full exchange observed
10-08 20:28	160m	- / -	OM3PC	+10 / -	2	Partial capture
10-08 20:25	160m	0 / -	RU4CK	- / +1	4	Partial capture
10-08 19:30	80m	+16 / -	UN7LAN	- / -9	3	Partial capture
10-08 19:30	80m	- / -	UC6D	+12 / -	3	Partial capture
10-08 19:26	80m	+9 / -	UA9XL/M	- / -9	3	Partial capture
10-08 18:24	160m	+8 / -6	SV3GKU	-1 / -5	5	✓ Full exchange observed
10-08 18:23	160m	+8 / 0	R7OF	-14 / +6	5	✓ Full exchange observed
10-08 18:17	160m	-5 / -	UA9FGJ	- / -15	6	✓ Closing fragment
10-08 17:33	160m	-5 / -	R80SAA	-18 / +3	7	✓ Full exchange observed
10-08 16:43	160m	+6 / +3	R6OBN	-14 / 0	6	✓ Full exchange observed
10-08 16:42	160m	+7 / -	RA0AY	- / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
185200  -1 2699  4L7T RZ3DW R-26 (x6)
190830  +1 2444  R7MR RZ3DW KO84 (x3)
191300  +3 2590  RZ3DW R5BS -01
191315  +2 2590  R5BS RZ3DW R-08
191330  +1 2590  RZ3DW R5BS RR73
191345  -1 2590  R5BS RZ3DW 73
180330  -6 1750  RZ3DW RN4LP +08
184115  -1 1377  <...> RZ3DW KO84

40m

UTC    dB Audio  Message
172645  -2 2611  UA9LLE RZ3DW 73
172845  -5 2063  RV9CW RZ3DW KO84
172900 -17 2063  RZ3DW RV9CW -10
172915  -9 2063  RV9CW RZ3DW R-02
172930 -18 2063  RZ3DW RV9CW RR73
172945  -9 2062  RV9CW RZ3DW 73
173330  -6 2104  R9SDR RZ3DW KO84
173345 -18 2103  RZ3DW R9SDR +00
173400 -12 2104  R9SDR RZ3DW R-03
173415 -15 2104  RZ3DW R9SDR RR73
173430  -9 2104  R9SDR RZ3DW 73
173545 -13 2104  UA9ZZ RZ3DW KO84 (x2)
065345 -17 1265  HF37KJP RZ3DW KO84
065400 -16 1094  RZ3DW R2EA/M -02

80m

UTC    dB Audio  Message
204415 +17 2401  RX7O RZ3DW KO84 (x4)
204645 +16 2401  JA0CRI RZ3DW KO84 (x2)
204915  +8 2401  R6OD RZ3DW KO84
204930  +3 2694  RZ3DW R6OD -02
204945 +14 2401  R6OD RZ3DW R+03
205000  +6 2694  RZ3DW R6OD RR73
205015  +9 2401  R6OD RZ3DW 73
205100 +13 2401  R1CBW RZ3DW KO84 (x2)
205145  -6 1022  RZ3DW R1CBW RR73
205200 +16 2401  R1CBW RZ3DW 73

20m

UTC    dB Audio  Message
135330 -14 2468  CQ RZ3DW KO84 (x2)
135415 -14 2033  RZ3DW PD1ADA JO21
151115 -15 1948  R1OBH RZ3DW KO84
151245 -17 2050  R1BBG RZ3DW R-09 (x3)
151515 -16 1474  R1OBH RZ3DW R-16 (x2)
151645 -13 2049  R1BBG RZ3DW KO84 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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