R7KHB — 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 R7KHB, decoded by SO8OO in southeastern Poland. 84 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-17 and 2026-09-13.

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 84 FT8 messages attributed to R7KHB as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (94%), followed by 20 m (6%). Several six-hour UTC windows tied for the largest share (96%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (62%); the estimated median was -7 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

40m · 79 20m · 5

First attributed message: 2026-06-17
Last attributed message: 2026-09-13 16:10 UTC

Observed FT8 message patterns

Attributed sample: 84 messages
Active dates: 6 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -20 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 18, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 52.

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 R7KHB in decoded directed-looking exchanges:

R5KH · European Russia RU6FS · European Russia EU6UE · Belarus R2DP · European Russia R3KFT · European Russia R3PA · European Russia R4CHN · European Russia R4PFY · European Russia R4WR · European Russia R5GG · European Russia R6HV/P · European Russia R70SAB · 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 R7KHB

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 · 43 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,237 km (approx.)
Last such locator decoded: 2026-09-13 16:10 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	R7KHB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-13 16:11	40m	- / -	SV1ENG	+4 / -	2	Partial capture
09-13 16:10	40m	- / -	RW6B	-6 / -	3	✓ Closing fragment
09-13 16:06	40m	- / 0	RA4NAL	-8 / -	2	Partial capture
09-13 16:02	40m	-4 / -	R6HV/P	- / +2	3	✓ Closing fragment
09-13 15:59	40m	-6 / 0	R3KFT	0 / +5	4	✓ Full exchange observed
09-13 15:50	40m	- / -17	SP7TF	-2 / -	2	✓ Closing fragment
09-13 15:43	40m	-5 / -9	RA3VX	-5 / +5	5	✓ Full exchange observed
09-13 15:37	40m	-3 / +6	EU6UE	-11 / -9	5	✓ Full exchange observed
09-13 15:34	40m	-4 / -8	R2DP	-12 / -6	8	✓ Full exchange observed
09-13 15:33	40m	- / -16	SP7TF	-7 / -	3	Partial capture
09-13 15:13	40m	-4 / -	RW9MZ	- / -	5	Partial capture
09-13 15:08	40m	-5 / -	R70SAB	- / -10	5	✓ Closing fragment
09-13 15:01	40m	-8 / -5	UB3PDB	-9 / -1	4	✓ Full exchange observed
09-13 14:59	40m	-8 / -	R9DZ	- / -10	2	✓ Closing fragment
09-13 14:54	40m	-10 / -	RV9FF	- / -9	3	✓ Closing fragment
09-13 14:52	40m	- / -3	RA3TVW	-8 / -	3	Partial capture
09-13 14:51	40m	-12 / -	RL3QGR	- / -2	2	✓ Closing fragment
09-13 14:48	40m	- / -	US1EA	-8 / -	2	Partial capture
09-13 14:39	40m	-3 / -7	R7LC	-3 / +7	2	Partial capture
09-01 16:36	40m	- / -4	RY2A	-17 / -	3	Partial capture
09-01 16:35	40m	-2 / -6	R1LP	-8 / -10	3	Partial capture
09-01 16:34	40m	-7 / -5	DF8RU	+1 / -8	5	Partial capture
08-24 16:45	20m	- / -	DB1EF	-12 / -	2	Partial capture
08-24 16:38	40m	- / -7	R3PJ	+2 / -	3	Partial capture
08-24 16:38	40m	-7 / -9	R4PFY	-16 / +2	5	✓ Full exchange observed
08-24 16:31	40m	-6 / -	R5GG	- / +2	2	✓ Closing fragment
08-24 16:24	40m	-7 / -	OH/SM5MRW	- / +6	7	Partial capture
08-24 16:23	40m	-4 / -4	R4CHN	-17 / -4	4	✓ Full exchange observed
08-01 10:08	20m	-24 / 0	RU6FS	-12 / +9	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
160045  -9 1725  R3KFT R7KHB R+05
160100  +1 2336  R7KHB R3KFT RR73
160245  -3 1726  R6HV/P R7KHB KN85 (x3)
160645  -7  400  R7KHB RA4NAL +00 (x2)
161000  -5 1726  CQ R7KHB KN85                         a1 (x2)
161045  -8 1056  R7KHB RW6B KN93
161045  -6 2718  R7KHB IQ4JO JN63
161115  +4 2772  R7KHB SV1ENG KM18
161115  -4 1055  R7KHB RW6B R+14
161145  +4 2772  R7KHB SV1ENG KM18
161145  -5 1055  R7KHB RW6B 73

20m

UTC    dB Audio  Message
100830 -24 1879  RU6FS R7KHB KN85
100845 -14 2173  R7KHB RU6FS +00
100900 -24 1879  RU6FS R7KHB R+09
100915 -10 2173  R7KHB RU6FS RR73
101130 -24 1873  R5KH R7KHB 73
131730 -24 1845  CQ R7KHB KN85
131945 -19 1845  R7KHB M7PNJ IO93
132100 -23 1845  UA5D R7KHB +01
164500 -10 1568  R7KHB DB1EF JO41 (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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