RC7KK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KN85

Receiver-side FT8 activity involving RC7KK, decoded by SO8OO in southeastern Poland. 111 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-09 and 2026-08-20.

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 111 FT8 messages attributed to RC7KK as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (50%), followed by 80 m (50%). Several six-hour UTC windows tied for the largest share (100%), 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

111

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 55 40m · 56

First attributed message: 2026-06-09
Last attributed message: 2026-08-20 19:50 UTC

Observed FT8 message patterns

Attributed sample: 111 messages
Active dates: 10 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -15 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 58, strong (≥ -8 dB) 42.

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 RC7KK in decoded directed-looking exchanges:

RC6OD · European Russia UD7G · European Russia RN2F · Kaliningrad 5Z4VJ · Kenya RA3WY · European Russia R4ZZ · European Russia EW8DG · Belarus R3YAU · European Russia RW6ATD · European Russia RA7Z · European Russia RY7F · European Russia RN3DDW/P · 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 RC7KK

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: KN85 · 61 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,237 km (approx.)
Last such locator decoded: 2026-08-01 21:44 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	RC7KK S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-20 19:50	40m	-2 / -14	R0QBB/3	+5 / -5	2	Partial capture
08-20 19:45	40m	- / -10	HA3GO	+5 / -	3	Partial capture
08-20 19:44	40m	-6 / -	R4UBH	- / -10	2	✓ Closing fragment
08-01 21:24	40m	- / -11	UA3SCU	-7 / -	4	Partial capture
08-01 20:54	40m	-18 / -	DL7ACA	-7 / -	2	✓ Closing observed
08-01 20:50	40m	-12 / -	RK9UM	- / -12	2	✓ Closing fragment
08-01 20:38	40m	-13 / -12	RW6ATD	+4 / -	3	✓ Closing observed
08-01 20:37	40m	- / -	PE1NPS	-13 / -	3	Partial capture
08-01 20:27	40m	-12 / -	R4ZZ	-9 / -10	2	✓ Closing observed
07-31 20:21	80m	- / -	E77EA	-2 / -	8	Partial capture
07-31 20:19	80m	-2 / -7	RN3DDW/P	-16 / -16	5	✓ Full exchange observed
07-31 20:18	80m	-6 / +7	RA3ZOM	+1 / -2	5	✓ Full exchange observed
07-31 19:28	80m	-4 / -5	S59A	+7 / -	3	✓ Closing observed
07-31 19:27	80m	-8 / -	R3YAU	+2 / -3	3	✓ Closing observed
07-26 20:31	40m	- / -	IZ3QCH	-16 / -	2	Partial capture
07-26 20:30	40m	- / -	RA6ABO	-14 / -	3	Partial capture
07-26 20:30	40m	- / -12	RX3ASQ	-15 / -	5	✓ Closing fragment
07-26 20:26	40m	-14 / -	Z62NS	- / -	2	Partial capture
07-26 19:40	40m	- / -	OE5ROR	-5 / -	4	✓ Closing fragment
07-26 19:39	40m	-12 / -	5Z4VJ	- / -21	2	✓ Closing fragment
07-13 21:46	40m	- / -	F1IQH	-16 / -	2	Partial capture
07-13 21:43	40m	-15 / -	R6FX	-17 / -	2	✓ Closing observed
07-13 21:04	40m	- / -	R3LC	0 / -	2	Partial capture
07-05 21:08	40m	- / -	RA3WY	-19 / -	3	✓ Closing fragment
07-05 21:08	40m	-22 / +2	UD7G	-14 / +3	4	✓ Full exchange observed
07-05 20:18	80m	-4 / -	RA7Z	- / -15	2	✓ Closing fragment
07-05 20:16	80m	- / -	DL9MCS	-2 / -	2	Partial capture
07-05 20:14	80m	-3 / -	OK2WMC	+15 / -18	2	Partial capture
07-05 20:14	80m	-8 / -	RA3TVW	-8 / -	3	✓ Closing observed
07-04 19:15	80m	-2 / -	R6OI	- / -3	2	Partial capture
07-04 19:10	80m	- / -	R6OI	+3 / -	5	Partial capture
07-04 19:08	80m	-3 / -17	RL2F	-7 / -13	6	✓ Full exchange observed
07-04 18:46	80m	-3 / -2	RY7F	-6 / 0	5	✓ Full exchange observed
07-04 18:44	80m	-1 / -	SN93LOT	- / -11	2	Partial capture
07-04 18:41	80m	+2 / +8	RK6MC	+10 / +3	7	✓ Full exchange observed
07-04 18:40	80m	-5 / -	<...>	-2 / -3	2	Partial capture
07-03 22:17	80m	- / -	DL3MIB	+6 / -	6	Partial capture
07-03 22:09	80m	-14 / -9	9A60CBM	+1 / -15	2	Partial capture
07-03 22:03	80m	-5 / -9	RC6OD	+12 / -6	5	✓ Full exchange observed
07-03 22:02	80m	- / -	DH4PAP	+3 / -	3	Partial capture
07-03 22:02	80m	-11 / -	DO1MDO	+3 / -	7	✓ Closing observed
07-03 21:58	40m	- / -8	UA3RLE	-10 / -	4	✓ Closing fragment
07-03 21:57	40m	- / -10	R3BCK	-4 / -	3	Partial capture
07-03 21:51	40m	- / -2	RN2F	-12 / -	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
212545  -4  949  RC7KK UA3SCU -11 (x2)
214130 -13 2564  F6BHK RC7KK RR73
214300 -11 2565  CQ RC7KK KN85 (x2)
200245  -6 2613  RC7KK R3BDQ -11
194430  -5 2492  R4UBH RC7KK R-10 (x2)
194515  +0 1785  RC7KK HA3GO -10 (x3)
194745  -7  866  R1BDX RC7KK RR73
195030  +5  743  RC7KK R0QBB/3 -14
195045  -2  744  R0QBB/3 RC7KK R-05
195100 -10  421  RC7KK RZ5D KN75

80m

UTC    dB Audio  Message
201930  -5 1879  RA3ZOM RC7KK RR73
201945 -12  922  RC7KK RN3DDW/P KO95
201945  +6 1879  RC7KK RA3ZOM 73
202000  +1  922  RN3DDW/P RC7KK -16
202015 -14  922  RC7KK RN3DDW/P R-07
202030  -6  921  RN3DDW/P RC7KK RR73
202045 -22  921  RC7KK RN3DDW/P 73
202115  -3 1402  RC7KK E77EA JN84 (x8)

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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