R7KJM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: KN75

Receiver-side FT8 activity involving R7KJM, decoded by SO8OO in southeastern Poland. 533 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, 20m, 10m, across 29 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-07-13.

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 533 FT8 messages attributed to R7KJM as the transmitting token by decoded message structure across 29 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (70%), followed by 40 m (12%) and 10 m (11%). Most decodes (67%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

533

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

160m · 29 80m · 375 40m · 63 20m · 10 10m · 56

First attributed message: 2026-06-06
Last attributed message: 2026-07-13 19:22 UTC

Observed FT8 message patterns

Attributed sample: 533 messages
Active dates: 29 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -20 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 118, moderate (-15 to -9 dB) 159, strong (≥ -8 dB) 256.

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 R7KJM in decoded directed-looking exchanges:

F8AEJ · France OK1ZJK · Czech Republic R1AP · European Russia R1TM · European Russia RA3PN · European Russia RL3K · European Russia RU3FM · European Russia R6ML · European Russia RA7T · European Russia RZ6CO · European Russia UA3LID · European Russia 9K2YM · Kuwait

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 R7KJM

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: KN75 · 295 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,102 km (approx.)
Last such locator decoded: 2026-07-13 19:22 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	R7KJM S/N	Counterpart	Counterpart S/N	Msgs	Capture
07-13 19:21	160m	-23 / -	UD8S	- / -	2	Partial capture
07-13 19:19	160m	-8 / -	R6ML	0 / +3	5	✓ Closing observed
07-13 19:16	160m	-9 / -15	RZ6CO	-6 / -	4	✓ Closing observed
07-13 19:12	160m	-10 / -21	UA3ZNQ	+1 / -4	4	Partial capture
07-13 19:08	160m	- / -14	RA7T	-2 / -	2	✓ Closing fragment
07-12 19:23	40m	- / -10	DG9FEH	-2 / -	2	✓ Closing fragment
07-12 19:20	40m	-2 / -	EA6ZS	- / -	3	Partial capture
07-12 00:44	80m	+3 / -16	DO1OAS	-10 / -16	5	✓ Full exchange observed
07-10 18:33	80m	+1 / -16	UA3GT	-15 / -14	4	✓ Full exchange observed
07-10 18:32	80m	-3 / -17	RG6OR	-8 / -	5	✓ Closing observed
07-10 18:31	80m	0 / -8	R6ZEJ	0 / -5	5	✓ Full exchange observed
07-10 18:31	80m	-10 / -	R3EDI	-4 / -1	3	✓ Closing observed
07-10 18:29	80m	- / -17	7Z1DH	-13 / -	2	✓ Closing fragment
07-10 18:27	80m	-2 / -	4X5MZ	- / -15	2	✓ Closing fragment
07-10 17:16	20m	- / -15	RA8AF	-20 / -	2	✓ Closing fragment
07-10 17:02	20m	- / -12	9K2YM	-6 / -	2	✓ Closing fragment
07-10 03:28	80m	-13 / -	LY3BRA	- / -	3	Partial capture
07-10 03:26	80m	-11 / -	C31KC	- / -	3	Partial capture
07-07 17:56	40m	- / -8	EW4DX	-10 / -	4	Partial capture
07-07 00:22	80m	-4 / -12	G6PWS	-7 / -5	5	✓ Full exchange observed
07-07 00:21	80m	0 / -7	OE6TNO	+9 / -4	5	✓ Full exchange observed
07-07 00:16	80m	+5 / +6	4X1YA	-2 / +1	7	✓ Full exchange observed
07-05 19:55	80m	-4 / -8	RT2P	0 / -	4	✓ Closing observed
07-05 19:51	80m	-2 / -7	DL3AS	+4 / -8	6	✓ Full exchange observed
07-05 19:50	80m	-5 / -18	DO7ES	-5 / -13	5	✓ Full exchange observed
07-05 19:49	80m	-3 / -11	9A1BTU	+2 / -4	4	✓ Full exchange observed
07-05 19:47	80m	+3 / -13	PA4CC	+11 / -8	5	✓ Full exchange observed
07-05 19:45	80m	+3 / -2	OK2WMC	+10 / -6	5	✓ Full exchange observed
07-05 19:43	80m	-3 / -17	RN3N	-5 / -	4	✓ Closing observed
07-05 19:42	80m	+1 / -3	UA4FKT	+16 / -	4	✓ Closing observed
07-05 19:40	80m	-2 / -	DF0GDX	+15 / -5	3	✓ Closing observed
07-05 19:25	160m	- / -19	UA3LID	+5 / -	3	✓ Closing fragment
07-05 19:23	160m	- / -8	YL3CW	0 / -	3	Partial capture
07-05 02:14	80m	+6 / -	K2K	- / -	2	Partial capture
07-05 01:59	80m	+5 / -	K2K	- / -	9	Partial capture
07-05 01:54	80m	+2 / -13	EC5M	+3 / -6	4	✓ Full exchange observed
07-05 01:52	80m	+3 / -5	DH1KJ	+5 / -3	5	✓ Full exchange observed
07-05 01:50	80m	-4 / -9	OZ2BMN	-10 / -9	4	✓ Full exchange observed
07-04 03:00	80m	-6 / -14	HA3IC	+10 / -11	5	✓ Full exchange observed
07-04 02:21	80m	-20 / -22	DL5DQZ	+10 / -15	15	Partial capture
07-02 19:37	40m	- / -5	R9FE	-8 / -	3	✓ Closing fragment
07-02 19:23	80m	-7 / -	TN8GD	- / -	2	Partial capture
06-30 18:16	80m	0 / -11	R9JX	-13 / -7	7	✓ Full exchange observed
06-30 18:16	80m	+1 / -10	RL7Z	-17 / -	4	✓ Closing observed
06-30 18:12	80m	-4 / -16	RV9ABE	-18 / -8	5	✓ Full exchange observed
06-30 18:11	80m	-9 / -5	R3HH	-4 / -8	5	✓ Full exchange observed
06-28 19:19	10m	- / -22	RK6J	-16 / -	2	Partial capture
06-28 19:16	10m	-16 / -	G4DBW	- / -	2	Partial capture
06-26 20:23	80m	-3 / -	R8KAN	- / -14	3	✓ Closing fragment
06-26 20:16	160m	-15 / -	OM2WQ	- / -	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
191430  +2  722  R7KJM UA3ZNQ R-21
191545  -4  492  CQ R7KJM KN75
191600  -6 1895  R7KJM RZ6CO -15 (x3)
191715  -9  493  RZ6CO R7KJM 73
191815  -9  493  CQ R7KJM KN75
191830 -18 1993  R7KJM RN5AA -06
191900  +0  409  R7KJM R6ML LN17 (x2)
191945  -6  492  R6ML R7KJM +03 (x2)
192030  -1  409  R7KJM R6ML 73
192130 -22 1890  UD8S R7KJM KN75 (x2)

80m

UTC    dB Audio  Message
183345  -9 1446  R7KJM RG6OR 73
183415 -14 1502  R7KJM UA3GT -16
183430  +1 1503  UA3GT R7KJM R-14
183445 -14 1503  R7KJM UA3GT RR73
004315  +0 2458  CQ R7KJM KN75 (x2)
004400  -9 2458  R7KJM DO1OAS -16
004415  -1 2458  DO1OAS R7KJM R-16
004430 -10 2458  R7KJM DO1OAS -16
004445  +4 2458  DO1OAS R7KJM R-15 (x2)
004645  +5 2458  CQ R7KJM KN75 (x3)
190145  -7 1066  UR5ZHJ R7KJM KN75

40m

UTC    dB Audio  Message
175600  -7  888  R7KJM EW4DX KO23 (x4)
033315 -11  562  R7KJM IK2SND -12
033530 -23 1440  AA4NP R7KJM KN75
033645 -18 2366  OA4ENG R7KJM KN75
173430  -7 1998  R7KJM UA6ANQ +00
173530 -21 1719  R7KJM RC6OX KN88
192045  -5 2940  EA6ZS R7KJM KN75 (x3)
192345  -4  524  R7KJM DG9FEH -10 (x2)
185200  -5  313  R7KJM UB3DRL RR73

10m

UTC    dB Audio  Message
133830  -1  691  R7KJM RU3FM 73
121100  -5  678  R7KJM R1TM RR73
200615  -7 2162  R7KJM RL3K KO91 (x3)
200745 -19 1387  R7KJM RU6L LN07
191630 -17 2293  G4DBW R7KJM KN75 (x2)
191900 -17 1316  R7KJM RK6J -22 (x2)
173930 -21 1564  PV8AJ R7KJM KN75 (x2)
174600 -20 2089  OK1ZJK R7KJM 73
191330 -20 1995  PU2BRU R7KJM KN75
191445 -24 1680  RA4Y R7KJM KN75

20m

UTC    dB Audio  Message
172945  -2  906  R7KJM R9FE -02
021930 -13 2046  R7KJM UA9SHH -09
170230  -4  593  R7KJM 9K2YM -12 (x2)
171615 -23 1522  R7KJM RA8AF -15 (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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