RD4CC — 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: LO31

Receiver-side FT8 activity involving RD4CC, decoded by SO8OO in southeastern Poland. 476 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 30 UTC dates in the available aggregate history. Observed between 2026-06-13 and 2026-10-30.

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 476 FT8 messages attributed to RD4CC as the transmitting token by decoded message structure across 30 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (61%), followed by 40 m (32%) and 80 m (4%). Most decodes (58%) fell within the six-hour window 17:00-23:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (70%); the estimated median was -2 dB.

Overview

476

Messages attributed

UTC dates decoded

Active 15-min windows

-2 dB

Estimated median S/N

Bands

80m · 20 40m · 152 20m · 288 10m · 16

First attributed message: 2026-06-13
Last attributed message: 2026-10-30 22:57 UTC

Observed FT8 message patterns

Attributed sample: 476 messages
Active dates: 30 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -16 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 48, moderate (-15 to -9 dB) 94, strong (≥ -8 dB) 334.

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 RD4CC in decoded directed-looking exchanges:

5N0YEN · Nigeria 7X2KF · Algeria EA8UP · Canary Islands EU2Q · Belarus K1SM · United States LU1FIV · Argentina OK2BRV · Czech Republic R9AL · Asiatic Russia UA3GJM · European Russia 7Z1BQ · Saudi Arabia 7Z1IS · Saudi Arabia BA4IE · China

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 RD4CC

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: LO31 · 272 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,774 km (approx.)
Last such locator decoded: 2026-10-30 22:57 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	RD4CC S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-30 22:36	40m	-13 / -	YO8AJG	- / -8	3	✓ Closing fragment
10-30 22:35	40m	-10 / -	BA4IE	- / -9	2	✓ Closing fragment
10-30 22:33	40m	-7 / -	R8UT	-6 / 0	4	✓ Closing observed
10-30 22:31	40m	-12 / -	EX8ABR	-20 / -9	4	✓ Closing observed
10-30 22:19	40m	-4 / -	S79VU	- / -	6	Partial capture
10-30 22:08	40m	-6 / -	S79VU	- / -	4	Partial capture
10-25 22:01	40m	-17 / -	YD2CWN	- / -	8	Partial capture
10-25 21:51	40m	-12 / -	BH4GWF	- / -17	5	✓ Closing fragment
10-25 21:43	40m	+1 / -	R9SR	- / +10	3	✓ Closing fragment
10-25 21:41	40m	-2 / -	TA2EE	- / 0	2	✓ Closing fragment
10-25 21:38	40m	+3 / -	SV5/DF7XE	- / -12	2	Partial capture
10-25 21:31	40m	-5 / -	OK2VCR	- / -8	2	✓ Closing fragment
10-25 21:29	40m	-6 / -	YC4PCR	- / -14	3	✓ Closing fragment
10-24 21:10	40m	- / -	F5MXH	-22 / -	2	Partial capture
10-24 21:08	40m	-9 / -	R2XM	- / -13	3	✓ Closing fragment
10-22 23:18	40m	-7 / -	EY7BP	- / -	3	Partial capture
10-22 23:14	40m	-8 / -	HA1BF	- / -	3	Partial capture
10-15 13:23	40m	-7 / +1	R80SAA	+4 / +6	7	✓ Full exchange observed
10-07 21:34	40m	- / -9	EA8BIA	-16 / -	2	Partial capture
10-03 23:07	40m	-12 / -	UC6W	- / -11	4	✓ Closing fragment
09-26 02:23	40m	+2 / -	RX9ABI	- / -3	2	✓ Closing fragment
09-26 02:21	40m	-8 / -	R9CA	- / -3	6	✓ Closing fragment
09-26 02:18	40m	-20 / -	R9CB	- / -11	3	✓ Closing fragment
09-26 02:13	40m	-18 / -16	PE1NPS	-17 / -17	5	✓ Full exchange observed
09-26 02:11	40m	-18 / -	7Z1IS	- / -8	3	✓ Closing fragment
09-22 23:54	40m	-12 / -13	TI8MCC	-14 / -	7	Partial capture
09-22 23:49	40m	- / -12	VO1AW	-14 / -	2	Partial capture
09-22 23:12	40m	-6 / -	HF1Z	- / -	4	Partial capture
09-22 23:10	40m	-5 / -	RV1CC	- / -4	3	✓ Closing fragment
09-22 23:03	40m	-10 / -8	E21EIC	-18 / -9	7	✓ Full exchange observed
09-22 23:01	40m	- / -	CT2HEX	-10 / -	4	Partial capture
09-22 22:57	40m	-1 / -	RI1FJZ	- / -12	7	✓ Closing fragment
09-22 22:44	40m	-11 / 0	U1BD	-11 / -6	8	✓ Full exchange observed
09-13 22:35	40m	-9 / -	SP6AXW	- / -20	2	✓ Closing fragment
09-13 22:31	40m	-5 / -	RX7O	- / -18	5	✓ Closing fragment
09-13 21:51	40m	+12 / -	DU3LA	- / -3	4	✓ Closing fragment
09-09 22:21	40m	+7 / -	XV9B	- / -6	9	✓ Closing fragment
09-09 22:13	40m	+4 / -	BD7OH	- / -14	3	✓ Closing fragment
09-09 22:11	40m	+7 / -2	7Z1BQ	-13 / -13	5	✓ Full exchange observed
09-09 22:04	40m	-6 / -	HG8LXL	- / -16	2	✓ Closing fragment
09-09 22:03	40m	-3 / -8	PD0LBY	-6 / -18	11	✓ Full exchange observed
09-09 22:01	40m	0 / -9	JY5IB	-18 / -	3	✓ Closing observed
09-09 18:05	80m	+4 / -10	EW8CW	+4 / -	4	✓ Closing observed
09-09 18:02	80m	+1 / -9	RX3DRC	-12 / -	3	✓ Closing observed
09-09 18:02	80m	- / -	RC6BB	-12 / -	3	Partial capture
09-09 18:01	80m	-4 / -11	R2DRE	-2 / -5	4	✓ Full exchange observed
09-09 17:59	80m	- / -	R5BM	-6 / -	2	✓ Closing fragment
09-09 17:57	80m	- / -	F5RRS	-12 / -	4	Partial capture
09-09 17:57	80m	-2 / +1	RA3RDN	-6 / -	7	✓ Full exchange observed
09-09 17:57	80m	- / -	RC2Y	-4 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
223145 -10 1665  EX8ABR RD4CC R-09
223200 -20 1666  RD4CC EX8ABR RR73
223215 -14 1666  EX8ABR RD4CC 73
223315  -5  747  R8UT RD4CC LO31 (x2)
223400  -6  747  RD4CC R8UT RR73
223415  -9  748  R8UT RD4CC 73
223515 -15 2025  BA4IE RD4CC R-09 (x2)
223600 -16 1209  RD4CC RA3TVW -19
223645 -12 1833  YO8AJG RD4CC -08 (x3)
224045  -4 1450  YG2CLC RD4CC LO31
225745  -1 1387  VU2MSA RD4CC LO31

80m

UTC    dB Audio  Message
180200  -4 1884  R2DRE RD4CC R-05
180215  -7 1165  RD4CC RC6BB KN84
180215  +2 1885  RD4CC R2DRE RR73
180230  -5 1884  R2DRE RD4CC 73
180245 -10 1603  RD4CC RX3DRC R-09
180245 -13 1165  RD4CC RC6BB KN84
180245 -14  931  RD4CC R6SBN KN86
180300  +1 1603  RX3DRC RD4CC RR73
180315 -14 1603  RD4CC RX3DRC 73
180315 -16 1166  RD4CC RC6BB KN84
180315  -6 1233  RD4CC R2GBR -03
180545  +7  828  RD4CC EW8CW R-10 (x2)
180800  +4 2275  EW8CW RD4CC RR73
180815  +8 2279  RD4CC EW8CW 73

20m

UTC    dB Audio  Message
174115  +8 2105  EP2AES RD4CC LO31 (x7)
190745 +17 1174  EA8UP RD4CC LO31 (x2)
190830  +8 1176  RD4CC EA8UP +13
190845  +4 1175  EA8UP RD4CC R-04
190900 +11 1176  RD4CC EA8UP RR73
190915 +10 1176  EA8UP RD4CC 73
191115 +18 1505  OK2BRV RD4CC R-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.

CW

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

Explore CW reception at SO8OO

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