RC1TF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KO57

Receiver-side FT8 activity involving RC1TF, decoded by SO8OO in southeastern Poland. 1,059 FT8 messages attributed to this token as transmitter, on 160m, 80m, 20m, across 28 UTC dates in the available aggregate history. Observed between 2026-08-13 and 2026-10-14.

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 1,059 FT8 messages attributed to RC1TF as the transmitting token by decoded message structure across 28 UTC dates in the available aggregate history. The largest monitored-band total was 160 m (58%), followed by 80 m (39%) and 20 m (3%). Most decodes (81%) fell within the six-hour window 15:00-21:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

1,059

Messages attributed

UTC dates decoded

140

Active 15-min windows

-10 dB

Estimated median S/N

Bands

160m · 611 80m · 414 20m · 34

First attributed message: 2026-08-13
Last attributed message: 2026-10-14 18:20 UTC

Observed FT8 message patterns

Attributed sample: 1,059 messages
Active dates: 28 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18.2 to -1.1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 210, moderate (-15 to -9 dB) 403, strong (≥ -8 dB) 446.

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 RC1TF in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany ×3 R7DX · European Russia ×3 RA3VX · European Russia ×3 RX6DA · European Russia ×3 UA4CKN · European Russia ×3 I1RJP · Italy ×3 9A2RD · Croatia ×2 IK0HBN · Italy ×2 OK1FRG · Czech Republic ×2 R2DRE · European Russia ×2 R2EC · European Russia ×2 R2SN · European Russia ×2

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 RC1TF

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: KO57 · 119 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,035 km (approx.)
Last such locator decoded: 2026-10-14 17:41 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	RC1TF S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-14 18:19	160m	- / -	R3EDX	-4 / -	5	Partial capture
10-14 18:19	160m	-20 / -14	F5BZB	-3 / -14	6	✓ Full exchange observed
10-14 18:18	160m	-10 / -	R9CS/P	- / -17	2	Partial capture
10-14 18:10	160m	-12 / -16	RU4CK	-16 / -9	7	✓ Full exchange observed
10-14 17:58	160m	-8 / -12	R4IK	-10 / -5	4	✓ Full exchange observed
10-14 17:54	160m	-10 / -	R7RF	- / -4	3	✓ Closing fragment
10-14 17:52	160m	-13 / -7	R5ZJ	-5 / +4	4	✓ Full exchange observed
10-14 17:49	160m	-9 / -	RZ0SW	- / -18	2	Partial capture
10-14 17:47	160m	-16 / -	UA9CMN	- / -8	2	Partial capture
10-14 17:44	160m	-10 / -12	R2SN	-20 / -10	6	✓ Full exchange observed
10-14 17:43	160m	-14 / -13	R6OE	-14 / -3	5	✓ Full exchange observed
10-14 17:43	160m	-9 / -	UD8D	- / -4	2	✓ Closing fragment
10-14 17:42	160m	-5 / -	UA4FEN	-23 / +1	3	✓ Closing observed
10-13 17:35	160m	-11 / -	RN1QK	-24 / -8	4	✓ Closing observed
10-13 17:23	160m	-14 / -	R3ZG	-19 / +6	3	✓ Closing observed
10-13 17:20	160m	-10 / -13	SQ2BXI	-13 / -11	3	Partial capture
10-13 17:20	160m	- / -	OK1VKX	-8 / -	2	Partial capture
10-13 17:19	160m	-3 / -	RA3RGQ	- / -9	2	✓ Closing fragment
10-13 17:17	160m	- / -19	RK6MC	-12 / -	2	Partial capture
10-13 17:17	160m	-16 / -10	SP9RXP	+5 / -	6	✓ Closing observed
10-13 17:16	160m	-10 / -	RU6L	- / -5	2	✓ Closing fragment
10-13 17:14	160m	-10 / -20	RA6MQ	-14 / -7	3	Partial capture
10-13 17:12	160m	-12 / -	RA4HBE	- / -3	3	✓ Closing fragment
10-13 17:12	160m	-8 / -12	HB9CXZ	-6 / -16	8	✓ Full exchange observed
10-13 17:10	160m	-14 / -1	RX3PX	-16 / 0	5	✓ Full exchange observed
10-13 16:50	160m	-7 / -	R3UG	- / -5	3	✓ Closing fragment
10-13 16:49	160m	-6 / -	RJ6B	-14 / -	3	✓ Closing observed
10-13 16:47	160m	-13 / -	RC7KH	- / -9	3	✓ Closing fragment
10-13 16:12	160m	-3 / -	R6ZEJ	- / -20	3	✓ Closing fragment
10-13 16:11	160m	-8 / -	RL6ZK	- / -7	2	✓ Closing fragment
10-13 16:05	160m	-12 / -7	RA3PDG	-12 / -5	5	✓ Full exchange observed
10-13 15:57	160m	-10 / -	RX6DA	- / -8	3	✓ Closing fragment
10-13 15:54	160m	-8 / -14	RA3LCW	-15 / -5	5	✓ Full exchange observed
10-13 15:54	160m	-17 / -	RW4HD	- / 0	2	✓ Closing fragment
10-13 15:32	160m	-15 / -	RX6DA	- / -11	5	✓ Closing fragment
10-07 18:03	160m	-8 / -15	RA9AJ	-13 / -11	4	✓ Full exchange observed
10-07 17:54	160m	-1 / -	UA3LKM	- / +1	3	✓ Closing fragment
10-06 17:11	160m	-8 / -	UA9YDR	- / -14	2	Partial capture
10-06 16:58	160m	-14 / -	RA9YTI	-18 / -12	3	✓ Closing observed
10-06 16:58	160m	-4 / -20	RW3VA	-21 / -7	5	✓ Full exchange observed
10-06 16:56	160m	-18 / -15	IK0HBN	+7 / -12	10	✓ Full exchange observed
10-06 16:55	160m	+6 / -	R6DOB	- / -6	2	✓ Closing fragment
10-06 16:53	160m	+1 / -	SV2AEL	+6 / -14	5	✓ Closing observed
10-06 16:51	160m	+3 / -	R1BLO/P	- / +1	4	✓ Closing fragment
10-06 16:49	160m	+10 / +5	DL1RNW	+11 / -13	5	✓ Full exchange observed
10-06 16:49	160m	-10 / -	RA6ANN	- / -8	2	✓ Closing fragment
10-06 16:47	160m	+3 / -7	R1BLO/P	-20 / 0	2	Partial capture
10-06 16:46	160m	-3 / -16	R3AT	-6 / +4	6	✓ Full exchange observed
10-06 16:44	160m	-3 / -	R7IA	- / -8	3	✓ Closing fragment
10-06 16:37	160m	+3 / -	RK6AH	-15 / -14	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
181415  -9 2450  RU4CK RC1TF RR73
181815  -7  931  R9CS/P RC1TF -17 (x2)
181900  +0 1131  RC1TF F5BZB JN03
181930 -14 1641  RC1TF RA3DAD -12
181930  -1  412  RC1TF R3EDX KO82
181930  -5 1131  RC1TF F5BZB JN03
181945 -24 1130  F5BZB RC1TF -14
182000  -4  412  RC1TF R3EDX KO82
182000  -5 1131  RC1TF F5BZB R-14
182015 -15 1131  F5BZB RC1TF RR73
182030  -4  646  RC1TF R3EDX KO82
182030  -3 1131  RC1TF F5BZB 73
182100  -8  646  RC1TF R3EDX KO82 (x2)

80m

UTC    dB Audio  Message
033645  -4 2697  RA3LBW RC1TF RR73
033700 +19 2696  RC1TF RA3LBW 73
033745  -7 1898  RV6AVU RC1TF -04
033800  -3 1898  RC1TF RV6AVU R-09
033815  -1 1898  RV6AVU RC1TF RR73
033830  +3 1898  RC1TF RV6AVU 73
033845  -4 1898  RV6AVU RC1TF 73
034200 -11  519  WA1J RC1TF -12 (x8)

20m

UTC    dB Audio  Message
043715  -5 1280  RC1TF RW4HUD LO42
043815 -16 1779  RC1TF RZ4AZ R-12 (x3)
043915  +0  904  RC1TF RW4HUD LO42
044930 +14 2365  RC1TF UA4FEN -23 (x2)
045930  +0 1979  RC1TF RW4HBD LO53 (x4)
050945  -3 1751  RC1TF R4AAR R-01 (x2)
060630  +5 1244  RC1TF R6OP R+01 (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.

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