RC1C — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KP50

Receiver-side FT8 activity involving RC1C, decoded by SO8OO in southeastern Poland. 632 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 31 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-06.

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 632 FT8 messages attributed to RC1C as the transmitting token by decoded message structure across 31 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 20 m (29%) and 80 m (1%). Most decodes (50%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

632

Messages attributed

UTC dates decoded

131

Active 15-min windows

-14 dB

Estimated median S/N

Bands

80m · 4 40m · 443 20m · 185

First attributed message: 2026-06-07
Last attributed message: 2026-09-06 19:12 UTC

Observed FT8 message patterns

Attributed sample: 632 messages
Active dates: 31 UTC dates
Estimated median S/N: -14 dB
Estimated 10th-90th percentile: -23 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 277, moderate (-15 to -9 dB) 168, strong (≥ -8 dB) 187.

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 RC1C in decoded directed-looking exchanges:

RZ3Z/P · European Russia ×2 F4DVX/P · France UB4HVA · European Russia R6NA · European Russia D2ACE · Angola OZ1WWA · Denmark CE8EIO · Chile 4Z5AY · Israel F4GZO · France OU7M/P · Denmark BI4SSB · China R6OIZ · 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 RC1C

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: KP50 · 464 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,309 km (approx.)
Last such locator decoded: 2026-09-05 21:53 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	RC1C S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-06 19:11	40m	- / -	DL9KM	+1 / -	3	Partial capture
09-05 21:55	40m	- / -	EB5FMC	-18 / -	4	Partial capture
09-05 21:50	40m	-6 / -3	LA5LDX/P	0 / -3	9	✓ Full exchange observed
09-05 21:48	40m	-7 / -	RW0AR	- / -	3	Partial capture
09-05 21:44	40m	-5 / -	OU7M/P	+8 / -4	8	✓ Full exchange observed
09-05 21:12	40m	-9 / -	OZ2NYB/P	- / -	5	Partial capture
09-05 21:09	40m	-11 / -	F1LPT	- / -4	3	✓ Closing fragment
09-05 21:09	40m	- / -2	F1LPT/P	-10 / -	3	✓ Closing fragment
09-05 20:59	40m	-11 / -	Z62NS	- / -	6	Partial capture
09-05 20:49	40m	-15 / -16	5P2F/P	-6 / -8	14	✓ Full exchange observed
09-05 20:47	40m	-19 / -	Z62NS	- / -	4	Partial capture
09-05 20:43	40m	-8 / +3	OZ7KJ/P	+8 / -	6	✓ Closing observed
09-04 23:08	40m	-13 / -	HK2PMU	- / -	3	Partial capture
09-04 23:08	40m	- / -	RU3OZ	-4 / -	2	Partial capture
09-04 23:08	40m	- / -	HB9GWJ	-2 / -	3	Partial capture
09-04 23:06	40m	-14 / -	3Z25POT	- / -17	2	Partial capture
09-04 23:03	40m	-14 / +5	R7ZY	+17 / +4	5	✓ Full exchange observed
09-04 15:10	40m	-16 / -	HB9/ON4AEO	- / -	3	Partial capture
09-04 03:28	40m	- / -	SV1ENG	-7 / -	4	Partial capture
09-04 03:25	40m	- / -15	R6LE	-6 / -	2	✓ Closing fragment
09-04 02:38	40m	- / -	SV1ENG	-12 / -	3	Partial capture
09-04 01:20	40m	- / -4	R6NA	+14 / -	2	✓ Closing fragment
09-04 01:18	40m	- / +9	HB9CXZ	+11 / -	3	✓ Closing fragment
09-03 22:33	40m	-8 / -	D2ACE	- / -	4	Partial capture
09-03 03:17	40m	- / -	SV1ENG	-6 / -	4	Partial capture
09-03 03:17	40m	- / +8	UA3RBM	-15 / -	3	Partial capture
09-03 03:14	40m	-17 / -	<...>	- / -12	4	Partial capture
09-03 03:08	40m	-9 / -	J38DX	- / -	9	Partial capture
09-02 19:08	80m	-12 / -	RI1FJL	- / -8	4	Partial capture
09-02 15:52	40m	-9 / -8	R1LH	-17 / -	3	✓ Closing observed
09-02 03:11	40m	-17 / -	VE3XVC	- / -	2	Partial capture
09-02 03:10	40m	- / -	UA3RBM	-2 / -	2	Partial capture
09-01 19:59	40m	-10 / -	IA5/OE9DGV	- / -	9	Partial capture
09-01 19:54	40m	-4 / -	EA5/F4IDT	- / -	2	Partial capture
09-01 19:49	40m	- / -6	II7MGBR	-14 / -	4	Partial capture
09-01 19:41	40m	- / +5	RN6LPC	0 / -	2	Partial capture
09-01 15:53	40m	-16 / -	<...>	- / -	5	Partial capture
09-01 03:28	40m	-17 / -	ON2VHF/P	- / -24	11	Partial capture
09-01 01:19	40m	-24 / -	PY1USK	- / -	2	Partial capture
09-01 01:13	40m	-21 / -	PY1USK	- / -	3	Partial capture
08-31 23:24	40m	-19 / -	VU2NKS	- / -23	3	Partial capture
08-31 23:20	40m	- / +6	PD0IFI	-9 / -	2	✓ Closing fragment
08-31 23:16	40m	-23 / -	9Y4D	- / -	2	Partial capture
08-31 23:14	40m	-20 / -	EA8CDG	- / -	4	Partial capture
08-31 23:10	40m	-18 / -	YV4EBD	- / -	5	Partial capture
08-31 03:30	40m	- / -	SV1ENG	-1 / -	3	Partial capture
08-31 03:28	40m	- / +3	RA6Z	-4 / -	2	Partial capture
08-31 03:04	40m	- / -15	RQ6B	-12 / -	2	✓ Closing fragment
08-30 19:33	20m	- / -11	G4DBW	+7 / -	3	Partial capture
08-30 18:54	20m	-18 / -	6K2MAS	- / -	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
215130  -6 1738  LA5LDX/P RC1C KP50 (x4)
215345  +0  564  RC1C LA5LDX/P -03
215400  -5 1738  LA5LDX/P RC1C R-03
215415  +0  564  RC1C LA5LDX/P RR73
215515 -16 1218  RC1C EB5FMC IM99 (x4)
191100  -1 1842  RC1C DL9KM JN68 (x3)
191215  -7 1861  3Z100LKK RC1C R-12

80m

UTC    dB Audio  Message
190815  -5 2192  RI1FJL RC1C KP50 (x4)
191100 -10  866  RC1C RM5F KO85
191230  -7 2015  RC1C UA2FBW KO04

20m

UTC    dB Audio  Message
161730 -18 1868  VU2CDP RC1C KP50 (x2)
161915 -19 1922  RC1C RC9WC -21 (x2)
163345  -6 1089  RC1C EA3HKD JN11
181515 -19 2010  RC1C F1PPH JN07 (x2)
185415 -18 2011  6K2MAS RC1C KP50 (x3)
193345  +7 2289  RC1C G4DBW JO01 (x3)
194545 -13 1721  PY1EME RC1C 73
194715 -19 1721  PY1USK RC1C KP50

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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