K5RCR — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN80

Receiver-side FT8 activity involving K5RCR, decoded by SO8OO in southeastern Poland. 29 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-08-14 and 2026-09-21.

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 29 FT8 messages attributed to K5RCR as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (86%), followed by 40 m (10%) and 80 m (3%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (69%); the estimated median was -17 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

80m · 1 40m · 3 20m · 25

First attributed message: 2026-08-14
Last attributed message: 2026-09-21 03:42 UTC

Observed FT8 message patterns

Attributed sample: 29 messages
Active dates: 3 UTC dates
Estimated median S/N: -17 dB
Estimated 10th-90th percentile: -24 to -13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 9, strong (≥ -8 dB) 0.

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 K5RCR in decoded directed-looking exchanges:

9K2WA · Kuwait ×2 9A5E · Croatia ×2 PI4DX · Netherlands ×2 F1PPH · France F5OYA/P · France R8CBB · Asiatic Russia SV5BYP · Dodecanese CR7BRV · Portugal F5NBU · France I1RJP · Italy J38LD · Grenada OK4FX · Czech Republic

Most frequent locator attributed to K5RCR

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: EN80 · 18 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,578 km (approx.)
Last such locator decoded: 2026-08-27 23:38 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	K5RCR S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 03:55	40m	- / -16	I1RJP	+14 / -	4	✓ Closing fragment
09-21 03:42	40m	- / -10	F5NBU	+10 / -	3	✓ Closing fragment
09-21 03:41	40m	-22 / -	DJ0MAB	- / -12	2	Partial capture
09-20 01:56	40m	- / -	I1RJP	+7 / -	4	Partial capture
09-10 02:18	80m	- / -21	PI4DX	-1 / -	2	✓ Closing fragment
09-10 02:11	40m	- / -18	W4GGJ	-20 / -	2	Partial capture
09-10 02:08	40m	- / -7	J38LD	-18 / -	2	✓ Closing fragment
09-02 01:23	40m	- / -15	CR7BRV	-8 / -	3	✓ Closing fragment
09-02 01:23	40m	- / -9	G5TV	-4 / -	4	Partial capture
09-01 04:15	40m	- / -	IZ0MYH	+4 / -	2	Partial capture
09-01 04:15	40m	- / -	F5PBG	0 / -	3	Partial capture
09-01 04:13	40m	- / -10	F4VTR	-4 / -	3	Partial capture
09-01 04:07	40m	- / -2	F1PBZ	-6 / -	3	Partial capture
09-01 04:00	40m	- / 0	LX1TI	+17 / -	3	Partial capture
08-31 18:34	20m	- / +4	F1PPH	-2 / -	3	✓ Closing fragment
08-29 02:41	80m	- / -22	9A5E	+10 / -	2	✓ Closing fragment
08-27 23:37	20m	-18 / -	<...>	- / -	2	Partial capture
08-27 23:35	20m	-12 / -	SP7NC	- / -11	2	Partial capture
08-27 23:27	20m	-19 / -	F5OYA/P	- / -	2	✓ Closing fragment
08-27 02:47	20m	- / -7	SV5BYP	-6 / -	2	✓ Closing fragment
08-27 02:30	20m	- / -	PD0DDA	-12 / -	2	Partial capture
08-27 02:16	20m	-18 / -	RA9ACA	- / -	3	Partial capture
08-27 02:14	20m	-17 / -	SV5BYP	- / -	3	Partial capture
08-27 02:11	20m	-14 / -	RI1FJL	- / -	2	Partial capture
08-27 02:09	20m	-15 / -	R8CBB	- / -4	3	✓ Closing fragment
08-25 00:35	20m	- / -	PD0RCQ	-21 / -	5	Partial capture
08-14 03:16	80m	- / -25	DO1NAE	-20 / -	12	Partial capture
08-14 03:10	80m	-24 / -13	TN8GD	-21 / -	3	Partial capture
08-14 02:59	80m	- / -20	F5OAM	+2 / -	3	Partial capture
08-14 02:33	80m	- / -18	9A5E	+9 / -	3	✓ Closing fragment
08-13 20:54	20m	- / -	IU4PPL	-16 / -	2	Partial capture
08-13 20:46	20m	- / -	4L7T	-1 / -	4	Partial capture
07-24 03:24	80m	- / -18	9A5E	+7 / -	7	Partial capture
07-22 02:10	80m	- / -3	PI4DX	+8 / -	2	✓ Closing fragment
07-22 02:06	80m	- / -15	HB9EFK	+12 / -	2	✓ Closing fragment
07-13 03:12	80m	- / -10	SV8JE	+14 / -	3	✓ Closing fragment
07-10 02:04	80m	- / -9	HB9CXZ	+6 / -	2	✓ Closing fragment
07-09 03:28	80m	- / -21	EC3A	-21 / -	5	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
021500  -8 1704  K5RCR 9K2WA RR73
015630  +6 2327  K5RCR I1RJP JN45 (x4)
034030 -21 1953  OK4FX K5RCR RR73
034130 -21 1952  DJ0MAB K5RCR -12 (x2)
034245  +9 1674  K5RCR F5NBU JN28 (x3)
035545 +20  470  K5RCR I1RJP JN45 (x4)

80m

UTC    dB Audio  Message
031700 -21 1651  K5RCR DO1NAE JN59 (x11)
024130 +12 1134  K5RCR 9A5E -22 (x2)
021845  +0  929  K5RCR PI4DX -21 (x2)

20m

UTC    dB Audio  Message
232745 -20 1842  F5OYA/P K5RCR RRR (x2)
233045 -16 2062  TF1EM K5RCR EN80
233145 -13 2061  LA1SNA K5RCR EN80
233415 -13 2058  M7SYR K5RCR RRR
233515 -12 2058  SP7NC K5RCR -11 (x2)
233715 -17 2056  II7MGMU K5RCR EN80
233745 -18 1975  <...> K5RCR EN80 (x2)
201145 -16 1205  K5RCR EA6UE -09
183445  +2 2325  K5RCR F1PPH JN07 (x3)
185315  -8 2775  K5RCR F8STC IN87

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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