RC0JD — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Asiatic Russia Most frequent locator attributed to this token: PO33

Receiver-side FT8 activity involving RC0JD, decoded by SO8OO in southeastern Poland. 37 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 5 UTC dates in the available aggregate history. Observed between 2026-06-18 and 2026-09-15.

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 37 FT8 messages attributed to RC0JD as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (95%), followed by 40 m (5%). Several six-hour UTC windows tied for the largest share (92%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 2 20m · 35

First attributed message: 2026-06-18
Last attributed message: 2026-09-15 18:55 UTC

Observed FT8 message patterns

Attributed sample: 37 messages
Active dates: 5 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -16 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 6, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 13.

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 RC0JD in decoded directed-looking exchanges:

CR7BRV · Portugal G0RIF · England IZ2DPX · Italy R3WDW · European Russia R3YK · European Russia R4FDW · European Russia RD4HX · European Russia RU6FS · European Russia RU9CZ · Asiatic Russia RV4AS · European Russia RW0AE · Asiatic Russia UB4HVA · European Russia

Most frequent locator attributed to RC0JD

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: PO33 · 17 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,562 km (approx.)
Last such locator decoded: 2026-09-15 18:55 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	RC0JD S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 19:09	40m	- / -	UB3FBD	-16 / -	2	Partial capture
09-15 19:07	40m	- / -	DB8WK	+12 / -	6	Partial capture
09-15 19:03	40m	- / -	DB8WK	+11 / -	3	Partial capture
09-15 19:02	40m	- / -19	M0BEW	-3 / -	3	Partial capture
09-15 18:59	40m	- / -	DL3FCG	-4 / -	2	Partial capture
09-15 18:57	40m	- / -12	UA7XA	+1 / -	3	Partial capture
09-15 18:55	40m	- / -	S54E	+7 / -	2	Partial capture
09-15 18:53	40m	- / -14	R3XBS	-2 / -	3	✓ Closing fragment
09-15 18:45	40m	-16 / -12	SY1BKQ	0 / -	4	✓ Closing observed
09-15 18:38	40m	- / -	EW8CW	+8 / -	2	Partial capture
09-15 18:37	40m	- / -17	RA6LTD	0 / -	3	Partial capture
09-15 18:28	40m	- / -8	RM5F	-5 / -	3	Partial capture
09-15 18:24	40m	- / -10	RT1L	-4 / -	4	✓ Closing fragment
09-15 18:24	40m	- / -19	F5UKW	+5 / -	2	Partial capture
09-13 21:43	40m	- / -	F4BYA	-16 / -	2	Partial capture
09-13 21:40	40m	- / -14	LA7DFA	+4 / -	4	✓ Closing fragment
09-13 21:28	40m	- / -8	RX9WM	-5 / -	3	✓ Closing fragment
09-13 21:23	40m	- / -	LA7DFA	+18 / -	9	Partial capture
09-13 21:15	40m	- / -2	RA3TVW	-5 / -	7	Partial capture
09-13 21:04	40m	- / -24	EA1CQ	-12 / -	2	Partial capture
09-13 21:01	40m	- / -15	F1TXI	+3 / -	5	✓ Closing fragment
09-13 20:51	40m	- / -17	OH4JFN	-4 / -	3	Partial capture
09-13 20:46	40m	- / -13	R7DI	-12 / -	3	Partial capture
09-13 20:36	40m	- / -12	R5DK	-1 / -	3	Partial capture
09-13 20:32	40m	- / -	HB9TIH	+2 / -	7	Partial capture
09-13 20:24	40m	- / -11	RN6HK	+1 / -	3	✓ Closing fragment
09-13 20:17	40m	- / -8	RC6OT	+2 / -	2	✓ Closing fragment
09-12 21:28	40m	- / -17	R8CC	-12 / -	2	Partial capture
09-12 21:20	40m	- / -18	IC8TEM	-4 / -	3	✓ Closing fragment
09-10 18:22	80m	- / -12	R6KA	+13 / -	7	Partial capture
09-10 17:16	40m	- / -24	R3UCQ	-2 / -	4	✓ Closing fragment
09-10 17:14	40m	- / -8	R5AV	+10 / -	2	✓ Closing fragment
08-28 21:03	40m	- / -15	RD6OZ	0 / -	3	✓ Closing fragment
08-28 20:55	40m	- / -20	RM6OG	-13 / -	2	Partial capture
08-28 20:50	40m	- / -	YO9ADN	-5 / -	4	Partial capture
08-28 12:12	20m	- / -3	RU9CZ	+6 / -	3	✓ Closing fragment
08-21 15:22	20m	-10 / -	VE7ZAX	- / -	2	Partial capture
08-21 15:21	20m	-11 / -14	R3YK	-12 / -9	3	✓ Full exchange observed
08-21 15:20	20m	-6 / -	UB8QBY	- / -6	3	✓ Closing fragment
08-21 15:18	20m	-6 / -9	UN7IV	-11 / -6	5	✓ Full exchange observed
08-21 15:16	20m	- / -	EC2AHS	-9 / -	4	Partial capture
08-21 15:13	20m	-8 / -	UY0HY	- / -11	5	✓ Closing fragment
08-21 15:11	20m	-6 / -	EW2ZC	- / -5	2	Partial capture
08-21 15:08	20m	-8 / -	F8KIC/P	- / -	2	Partial capture
08-21 14:58	20m	-11 / -	RV4AS	- / -1	4	✓ Closing fragment
08-21 14:57	20m	- / -21	EB1DJ	-16 / -	2	Partial capture
08-21 14:54	20m	-15 / -	R6ZA	-9 / -4	2	Partial capture
08-21 14:54	20m	- / -16	UB4HVA	-3 / -	5	✓ Closing fragment
08-21 14:51	20m	-10 / -4	RU6FS	-7 / +2	6	✓ Full exchange observed
08-11 04:46	20m	- / -14	RW0AE	-19 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
190015  -7 2736  RC0JD DL3FCG JO40
190215  -5 2178  RC0JD M0BEW -19 (x3)
190315 +10 2695  RC0JD DB8WK JO33 (x7)
190930 -17 2413  RC0JD UB3FBD KO85
190930 +14  366  RC0JD DB8WK JO33
191000 -16 2413  RC0JD UB3FBD KO85
191000 +11  366  RC0JD DB8WK JO33

80m

UTC    dB Audio  Message
182215 +10 2481  RC0JD R6KA KN75 (x7)

20m

UTC    dB Audio  Message
151945  -7 2468  UN7IV RC0JD 73
152015  -6 2468  UB8QBY RC0JD PO33 (x3)
152145 -10 2468  R3YK RC0JD -09
152200 -12  546  RC0JD R3YK R-14
152215 -12 2468  R3YK RC0JD RR73
152245  -8 2468  VE7ZAX RC0JD PO33 (x2)
152630 -20 2468  9W2UUE RC0JD PO33
154630  -2 2607  RC0JD OZ2SPACE -08
121245  +5 2420  RC0JD RU9CZ MO06 (x3)
212915 -20 2248  RC0JD VK4QG -08

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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