YO8RFK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN27

Receiver-side FT8 activity involving YO8RFK, decoded by SO8OO in southeastern Poland. 136 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-06-11 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 136 FT8 messages attributed to YO8RFK as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (93%), followed by 40 m (7%). Most decodes (76%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (88%); the estimated median was +7 dB.

Overview

136

Messages attributed

UTC dates decoded

Active 15-min windows

+7 dB

Estimated median S/N

Bands

40m · 10 20m · 126

First attributed message: 2026-06-11
Last attributed message: 2026-09-21 08:54 UTC

Observed FT8 message patterns

Attributed sample: 136 messages
Active dates: 7 UTC dates
Estimated median S/N: +7 dB
Estimated 10th-90th percentile: -10 to +22 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 3, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 119.

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 YO8RFK in decoded directed-looking exchanges:

IR0WWA · Italy ×2 8Q7PR · Maldives BH4ECL · China CT3MD · Madeira Islands DL6EL · Fed. Rep. of Germany EA4GFG · Spain F1ODM · France F1THK · France F4MMA · France G5CTX · England HA3TBL · Hungary HC2GRC · Ecuador

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 YO8RFK

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: KN27 · 69 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 359 km (approx.)
Last such locator decoded: 2026-09-21 08:53 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	YO8RFK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 08:54	40m	-13 / -11	SH5RJX	-22 / -9	3	✓ Full exchange observed
09-21 08:50	40m	-12 / -8	DL9KM	-5 / -8	7	✓ Full exchange observed
09-21 08:49	40m	-12 / -15	SP7TF	-10 / -2	4	✓ Full exchange observed
08-30 16:54	20m	- / +6	PD1GOL	-12 / -	2	✓ Closing fragment
08-30 16:36	20m	- / -	BG4UVR	-11 / -	3	Partial capture
08-30 16:32	20m	- / -	F6BHK	+6 / -	2	Partial capture
08-27 11:34	20m	- / -	PA1JMR	+1 / -	2	Partial capture
08-27 11:34	20m	- / -	RA1QX	0 / -	4	Partial capture
08-27 11:33	20m	- / -	EA4IFO	-19 / -	2	Partial capture
08-27 11:29	20m	- / +4	PA3BV	-8 / -	2	Partial capture
08-27 11:29	20m	- / -24	UA3PAB	+14 / -	5	Partial capture
08-26 12:18	20m	- / +5	F1ODM	+4 / -	4	✓ Closing fragment
08-26 12:13	20m	- / -4	CT3MD	-10 / -	3	✓ Closing fragment
08-26 12:07	20m	- / +3	F1ODM	+8 / -	10	Partial capture
08-26 11:54	20m	- / +7	ON4DJT	-15 / -	2	Partial capture
08-06 08:56	20m	-7 / +9	PD0PWH	-7 / -	5	✓ Closing observed
08-06 08:56	20m	-9 / -5	YL2CI	-3 / -	4	✓ Closing observed
08-06 08:54	20m	-4 / +10	F4HSB	-24 / -1	2	Partial capture
08-06 08:53	20m	- / -	M0WOO	+1 / -	3	Partial capture
07-27 07:06	20m	- / -12	<...>	-7 / -	2	Partial capture
07-27 06:47	20m	- / -12	RD3FY	-19 / -	3	✓ Closing fragment
07-26 17:52	20m	-6 / -	SP9DAT	- / -10	2	✓ Closing fragment
07-26 17:49	20m	-5 / -	BH4ECL	-14 / -12	4	✓ Closing observed
07-26 17:47	20m	+2 / -	BH2WTV	- / -22	2	Partial capture
07-26 17:46	20m	+6 / -	JG3LGD	- / -	2	Partial capture
07-26 17:42	20m	-5 / -12	JA6VQA	-12 / -5	5	✓ Full exchange observed
07-26 17:39	20m	-7 / -	JA6CNL	- / -16	3	✓ Closing fragment
07-26 17:37	20m	-4 / -	EX8ABR	- / -	2	Partial capture
07-26 17:35	20m	+8 / -8	US5HL	-16 / -9	4	✓ Full exchange observed
07-26 17:33	20m	+3 / 0	G5CTX	-2 / -12	6	✓ Full exchange observed
07-26 17:32	20m	+7 / +1	HA3TBL	-21 / -10	3	✓ Full exchange observed
07-20 07:29	20m	- / -	IK2ZJR	-10 / -	2	Partial capture
07-19 13:26	20m	- / +5	YO2PID	-12 / -	2	✓ Closing fragment
07-19 13:23	20m	- / +10	UT7UJ	-12 / -	2	✓ Closing fragment
07-19 13:19	20m	- / -2	DL9KM	-12 / -	4	Partial capture
07-17 12:52	20m	- / 0	EA4GFG	-17 / -	2	✓ Closing fragment
07-17 12:43	20m	- / -7	IK0ISD	-2 / -	7	Partial capture
07-17 12:32	20m	- / -	IK0ISD	-5 / -	9	Partial capture
07-17 05:02	20m	- / -5	HC2GRC	-6 / -	2	✓ Closing fragment
07-16 13:28	20m	- / +7	IV3XLY	0 / -	4	✓ Closing fragment
07-16 13:21	20m	- / -	DL1R	-11 / -	2	Partial capture
07-16 13:07	20m	- / -4	UG4Y	-15 / -	3	✓ Closing fragment
07-15 15:39	20m	- / -	F4MMA	-24 / -	2	✓ Closing fragment
07-14 17:56	20m	- / -7	EA7LIC	-15 / -	3	Partial capture
07-12 16:10	20m	- / -	R4HEA	-10 / -	2	Partial capture
07-12 15:41	20m	- / -	F4FQT	-19 / -	2	Partial capture
07-12 15:12	20m	- / -4	F1THK	-12 / -	2	✓ Closing fragment
07-02 09:35	20m	- / +3	DL6EL	-4 / -	2	✓ Closing fragment
06-30 12:40	20m	- / -10	II3WWA	-5 / -	2	✓ Closing fragment
06-30 12:36	20m	- / -2	IR0WWA	-20 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
085015  -9 1783  YO8RFK SP7TF RR73
085030 -11 1782  SP7TF YO8RFK 73
085045 -10 1426  YO8RFK DL9KM JN68
085100 -13 1785  DL9KM YO8RFK -08
085115  -7 1426  YO8RFK DL9KM JN68
085130  -9 1783  DL9KM YO8RFK -10
085145  +0 1426  YO8RFK DL9KM R-08
085200 -13 1776  DL9KM YO8RFK RR73
085215  -4 1426  YO8RFK DL9KM 73
085230 -11 1770  IQ4JO YO8RFK -08
085300 -15 1772  CQ YO8RFK KN27                        a1 (x2)
085400 -13 1768  SH5RJX YO8RFK -09
085415 -24 1378  YO8RFK SH5RJX R-11 (x2)

20m

UTC    dB Audio  Message
113445  -1 2492  YO8RFK PA1JMR JO32
113515  +3 2041  YO8RFK RA1QX KO99 (x3)
113615  +3 2492  YO8RFK PA1JMR JO32
113930  -8  822  YO8RFK II7MGFG +04
114000  -3  822  YO8RFK RR73; EW6CY <...> +00
163230  +1 2574  YO8RFK F6BHK JN24
163300 -10 2373  YO8RFK UA9FMT LO88
163300 +11 2874  YO8RFK F6BHK JN24
163600 -10 2623  YO8RFK BG4UVR PM01 (x3)
165400 -16 1077  YO8RFK PD1GOL R+06 (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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