KM4FZA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EM95

Receiver-side FT8 activity involving KM4FZA, decoded by SO8OO in southeastern Poland. 91 FT8 messages attributed to this token as transmitter, on 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-08-29.

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 91 FT8 messages attributed to KM4FZA 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 (100%). Most decodes (97%) fell within the six-hour window 22:00-04:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

20m · 91

First attributed message: 2026-07-20
Last attributed message: 2026-08-29 00:55 UTC

Observed FT8 message patterns

Attributed sample: 91 messages
Active dates: 7 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -21 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 42, moderate (-15 to -9 dB) 25, strong (≥ -8 dB) 24.

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 KM4FZA in decoded directed-looking exchanges:

7Z1DR · Saudi Arabia A41MC · Oman E75C · Bosnia-Herzegovina F4EGM · France HA3HM · Hungary HR1R · Honduras IK2ZJR · Italy K0DG · United States K2ZJ · United States K8OMB · United States KK4TE · United States KM7BQB · United States

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 KM4FZA

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: EM95 · 62 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,876 km (approx.)
Last such locator decoded: 2026-08-29 00:55 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	KM4FZA S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 03:50	80m	- / +7	NA3M	-21 / -	3	✓ Closing fragment
08-30 03:39	80m	- / -	DK5WL	+2 / -	3	Partial capture
08-30 03:38	80m	- / -	DO1NAE	-11 / -	6	Partial capture
08-30 03:26	80m	- / -	DK5WL	+3 / -	3	Partial capture
08-30 03:19	80m	- / -	DK5WL	+8 / -	2	Partial capture
08-27 03:23	20m	- / -25	UA6YW	-8 / -	4	✓ Closing fragment
08-27 03:04	20m	-13 / -	AH6HY	- / -	2	Partial capture
08-27 02:33	20m	-19 / -	LY5A	- / -3	2	✓ Closing fragment
08-27 02:22	20m	-18 / -	CU2JX	- / -6	3	Partial capture
08-27 02:18	20m	-5 / -	CU2JX	- / -	2	Partial capture
08-27 02:16	20m	-4 / -	A41MC	- / -	4	Partial capture
08-27 02:12	20m	-4 / -	PY5EJ	- / -19	2	Partial capture
08-27 02:06	20m	-2 / -	W6PZA	- / -	9	Partial capture
08-27 02:05	20m	-2 / -4	IK2ZJR	+15 / -16	5	✓ Full exchange observed
08-27 01:43	20m	- / -3	F4EGM	-12 / -	3	✓ Closing fragment
08-26 03:03	20m	- / -	RM6LW	-4 / -	2	Partial capture
08-26 02:07	20m	- / -20	A41MC	-17 / -	3	✓ Closing fragment
08-26 01:51	20m	- / -11	KK4TE	0 / -	3	✓ Closing fragment
08-26 01:44	20m	- / -15	7Z1DR	-6 / -	2	✓ Closing fragment
08-26 01:40	20m	-20 / -	7Z1DR	- / -	2	Partial capture
08-26 01:36	20m	-18 / -	RZ9OL	- / -	3	Partial capture
08-26 01:26	20m	-20 / -	7Z1DS	- / -	2	Partial capture
08-26 01:16	20m	-21 / -	HR1R	- / -14	3	✓ Closing fragment
08-26 00:44	20m	-11 / -	W5ERX	- / -12	12	✓ Closing fragment
08-25 23:08	20m	-12 / -	GM7JQK	- / -	5	Partial capture
08-25 23:03	20m	-20 / -	EA8DNB	- / -	2	Partial capture
08-25 22:52	20m	-15 / -10	SP1TJ	-12 / -6	5	✓ Full exchange observed
08-25 22:46	20m	-16 / -	N1MNU	- / -16	3	✓ Closing fragment
08-25 03:17	20m	-16 / -	K7FDN	- / -	2	Partial capture
08-25 03:11	20m	-20 / -	IR7MGGC	- / +4	2	Partial capture
08-25 02:54	20m	-23 / -	HA3HM	- / -	2	✓ Closing fragment
08-25 02:07	40m	- / -	EA5HM	-4 / -	3	Partial capture
08-24 00:33	40m	- / -	SP1ADT	0 / -	2	Partial capture
08-24 00:32	40m	- / -	EB1LA	0 / -	2	Partial capture
08-22 22:12	20m	- / -	DL2BS	-8 / -	9	Partial capture
08-22 20:29	20m	- / -	W1WCI	-6 / -	4	Partial capture
08-21 02:41	40m	- / -12	YO7ARZ	-2 / -	5	Partial capture
08-21 02:22	40m	- / -8	OK7BB	-14 / -	2	✓ Closing fragment
08-21 02:18	40m	- / -13	CT2GQA	-12 / -	2	Partial capture
08-20 00:20	40m	- / -12	G1LQT	-23 / -	2	Partial capture
08-20 00:14	40m	- / -15	G1LQT	-14 / -	5	Partial capture
08-20 00:04	40m	- / -17	F4FPR	-22 / -	4	Partial capture
08-16 02:24	40m	- / -22	UR5LAK	-21 / -	7	✓ Closing fragment
08-16 01:54	40m	- / -19	LZ1VVD	-14 / -	3	✓ Closing fragment
08-11 02:46	20m	- / -20	SV5BYP	-18 / -	2	✓ Closing fragment
08-10 02:50	20m	- / -23	R7WA	-20 / -	4	✓ Closing fragment
08-09 03:25	80m	- / +1	KZ8C	-16 / -	2	✓ Closing fragment
08-09 02:58	40m	- / -5	W6NWS	-4 / -	2	✓ Closing fragment
08-08 04:19	60m	- / -	DH1BBO	-12 / -	10	Partial capture
08-08 04:19	60m	- / -	ON8BB	+1 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
023115 -18 1856  KM4FZA RA3DA KO95
024115  +0 2200  KM4FZA YO7ARZ KN14 (x5)
003200  -2 1069  KM4FZA EB1LA IN73 (x2)
003300  +1 1658  KM4FZA SP1ADT JO83 (x2)
004000  +3 1385  KM4FZA UA6CE -24
020730  -5 1197  KM4FZA EA5HM IM99 (x3)
014330 -10  931  KM4FZA DL4ME 73

80m

UTC    dB Audio  Message
032700  +2 1581  KM4FZA DK5WL JN39
033830 -12  313  KM4FZA DO1NAE JN59
033900 -24 1897  KM4FZA F5RRS JN36
033900 -12  313  KM4FZA DO1NAE JN59
033900  +2 1477  KM4FZA DM9EE JO41
033900  +2 1581  KM4FZA DK5WL JN39
033930  -6  313  KM4FZA DO1NAE JN59
033930  +2 1581  KM4FZA DK5WL JN39
034000 -10  313  KM4FZA DO1NAE JN59
034000  +1 1581  KM4FZA DK5WL JN39
034030 -12  313  KM4FZA DO1NAE JN59 (x2)
035030 -24 1957  KM4FZA NA3M FM19 (x3)

20m

UTC    dB Audio  Message
022245 -14 1612  CU2JX KM4FZA R-06 (x3)
022645 -17 1477  <...> KM4FZA R-04
023315 -19 2104  LY5A KM4FZA R-03 (x2)
025315 -12  747  R4CF KM4FZA R-06
030445 -14  748  AH6HY KM4FZA EM95 (x2)
032300  -8  749  KM4FZA UA6YW LN04 (x4)
024000 -18 1401  CQ KM4FZA EM95 (x2)

60m

UTC    dB Audio  Message
041915  +3 2533  KM4FZA ON8BB JO21 (x2)
041945 -18 1544  KM4FZA DH1BBO JO42 (x10)

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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