RC7C — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KN95

Receiver-side FT8 activity involving RC7C, decoded by SO8OO in southeastern Poland. 71 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 10m, across 12 UTC dates in the available aggregate history. Observed between 2026-06-30 and 2026-09-20.

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 71 FT8 messages attributed to RC7C as the transmitting token by decoded message structure across 12 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (56%), followed by 160 m (28%) and 80 m (11%). Several six-hour UTC windows tied for the largest share (45%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

160m · 20 80m · 8 40m · 3 10m · 40

First attributed message: 2026-06-30
Last attributed message: 2026-09-20 20:42 UTC

Observed FT8 message patterns

Attributed sample: 71 messages
Active dates: 12 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -16 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 10, moderate (-15 to -9 dB) 35, strong (≥ -8 dB) 26.

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 RC7C in decoded directed-looking exchanges:

R2EA · European Russia R3PA · European Russia R3PLN · European Russia RA5AK · European Russia RC5F · European Russia RL1B · European Russia RN6MA · European Russia RU3DNN · European Russia RV3DBK · European Russia RV6HE · European Russia RX3VF · European Russia UA3FO · 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 RC7C

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: KN95 · 34 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,375 km (approx.)
Last such locator decoded: 2026-09-20 20:41 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	RC7C S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 20:43	160m	- / -13	R2EA/P	-16 / -	2	Partial capture
09-20 20:40	160m	+2 / -	C31CT	- / -11	4	✓ Closing fragment
09-19 21:35	160m	-13 / -	7X2TT	+1 / -25	7	✓ Closing observed
09-19 21:32	160m	-9 / -14	7X2TT	-4 / -	3	Partial capture
09-19 20:58	160m	-10 / -	RI1FJZ	- / -15	2	Partial capture
09-06 15:14	80m	-7 / -	P29YY	- / -	3	Partial capture
09-04 20:56	160m	-11 / -	RI1FJL	- / -	5	✓ Closing fragment
09-01 18:12	80m	+8 / -	RI1FJL	- / -24	5	Partial capture
07-24 07:03	10m	-8 / -	RX3VF	- / +8	2	✓ Closing fragment
07-24 07:01	10m	-10 / -	RV3DBK	- / -7	2	✓ Closing fragment
07-24 06:59	10m	-10 / -	R3PA	- / +10	2	✓ Closing fragment
07-24 06:58	10m	-8 / -	UA3FO	- / -	2	✓ Closing fragment
07-24 06:57	10m	-6 / -	R2EA	- / -1	2	✓ Closing fragment
07-23 13:46	10m	-20 / -11	RN6MA	-13 / -	4	✓ Closing observed
07-13 19:50	40m	-9 / -	RI1PC	- / -19	3	✓ Closing fragment
07-08 06:17	10m	-14 / -	RV6HE	-13 / -15	3	✓ Closing observed
07-08 06:15	10m	-16 / 0	RC5F	-16 / -	3	✓ Closing observed
07-08 06:12	10m	-16 / -	RU3DNN	- / +1	2	✓ Closing fragment
07-08 06:00	10m	-10 / -	DL8RCB	- / -7	2	Partial capture
06-30 15:41	10m	-4 / -	WB4OSS	- / -	7	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
213300  -4  495  RC7C 7X2TT -14
213545 -13 2517  7X2TT RC7C R-25 (x6)
214030  +1  496  RC7C 7X2TT RR73
204030  +5 2297  C31CT RC7C KN95 (x4)
204215  +4 2646  RC7C UA3ZUX KO90
204315 -19 2611  RC7C R2EA/P -13 (x2)

80m

UTC    dB Audio  Message
181215  +3  868  RI1FJL RC7C KN95 (x5)
151415  -8 1495  P29YY RC7C KN95 (x3)

10m

UTC    dB Audio  Message
134715 -20 2202  RN6MA RC7C 73
065430 -11 2521  R3PLN RC7C 73
065700  -8 2521  R2EA RC7C R-01 (x2)
065800 -10 2521  UA3FO RC7C +22 (x2)
065900 -10 2521  R3PA RC7C +10 (x2)
070100 -10 2521  RV3DBK RC7C R-07 (x2)
070200  -9 2521  CQ RC7C KN95 (x2)
070330  -8 2521  RX3VF RC7C +08 (x2)
070600 -11 2522  UB3LBU RC7C RR73

40m

UTC    dB Audio  Message
195045 -12 1823  RI1PC RC7C KN95 (x3)
195200  -7  773  RC7C RM5F KO85

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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