KR4ANF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EL86

Receiver-side FT8 activity involving KR4ANF, decoded by SO8OO in southeastern Poland. 5 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 2 UTC dates in the available aggregate history. Observed between 2026-08-27 and 2026-09-01.

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 5 FT8 messages attributed to KR4ANF as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (60%), followed by 40 m (40%). In this small sample, the estimated median decoder S/N was -17 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-17 dB

Estimated median S/N

Bands

40m · 2 20m · 3

First attributed message: 2026-08-27
Last attributed message: 2026-09-01 00:49 UTC

Observed FT8 message patterns

Attributed sample: 5 messages
Active dates: 2 UTC dates
Estimated median S/N: -17 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 0, 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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with KR4ANF in decoded directed-looking exchanges:

A71UN · Qatar CR7BUJ · Portugal MI0NWA · Northern Ireland R2SN · European Russia SV5BYP · Dodecanese US5HL · Ukraine 4X1UF · Israel EA7R · Spain EB3JT · Spain HB10GBT · Switzerland IZ8VYU · Italy R2EC · European Russia

Most frequent locator attributed to KR4ANF

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: EL86 · 4 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,761 km (approx.)
Last such locator decoded: 2026-08-27 23:57 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	KR4ANF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-01 00:57	40m	- / -	F6FHZ	+2 / -	2	Partial capture
09-01 00:49	40m	- / -8	OK1WCF	-10 / -	6	Partial capture
08-27 23:57	40m	-17 / -20	4X1UF	-4 / -	4	✓ Closing observed
08-27 23:51	40m	- / +1	EB3JT	-8 / -	5	✓ Closing fragment
08-27 23:41	20m	-17 / -	CT2KCP	- / -	3	Partial capture
08-24 22:13	20m	- / -15	CR7BUJ	-8 / -	2	✓ Closing fragment
08-24 08:55	20m	- / -22	R2SN	-3 / -	6	✓ Closing fragment
08-24 08:53	20m	- / -	F5SZB	+10 / -	2	Partial capture
08-24 08:50	20m	- / -	R2SN	+6 / -	2	Partial capture
08-24 08:48	20m	- / -8	MI0NWA	0 / -	2	✓ Closing fragment
07-29 06:29	20m	- / -	IV3GOW	-7 / -	4	Partial capture
06-29 02:46	20m	- / -14	SV5BYP	-13 / -	4	✓ Closing fragment
06-29 02:33	40m	- / -16	R2EC	-12 / -	3	✓ Closing fragment
06-29 02:28	40m	- / -	IZ8VYU	-10 / -	3	✓ Closing fragment
06-29 02:17	20m	- / -2	A71UN	-15 / -	3	✓ Closing fragment
06-29 02:12	20m	- / -22	US5HL	-12 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
235715  -1 2485  KR4ANF 4X1UF -20
235730 -17 2482  4X1UF KR4ANF EL86
235745  -7 2485  KR4ANF 4X1UF -20 (x2)
004845 -10 2604  KR4ANF S56KO -06
004945 -10 2603  KR4ANF OK1WCF JO80
004945 -16 1006  HB10GBT <KR4ANF> 73
005015 -10 2603  KR4ANF OK1WCF JO80 (x5)
005730  +2 2495  KR4ANF F6FHZ JN18 (x2)
050415 -21  887  KR4ANF M0KSE IO83

20m

UTC    dB Audio  Message
085030  +7  894  KR4ANF R2SN KO94
085330  +7  423  KR4ANF F5SZB IN95 (x2)
085500  -1  667  KR4ANF R2SN KO94
085530 -13 1426  KR4ANF PA2PWM -14
085600  -2  425  KR4ANF R2SN KO94 (x5)
221330  -6 1218  KR4ANF CR7BUJ -15 (x2)
234145 -16 1580  CT2KCP KR4ANF EL86 (x3)

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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