KD3CZT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FM18

Receiver-side FT8 activity involving KD3CZT, decoded by SO8OO in southeastern Poland. 66 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-09-15.

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 66 FT8 messages attributed to KD3CZT as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (83%), followed by 20 m (17%). Most decodes (98%) fell within the six-hour window 23:00-05:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (88%); the estimated median was -20 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-20 dB

Estimated median S/N

Bands

40m · 55 20m · 11

First attributed message: 2026-08-22
Last attributed message: 2026-09-15 01:45 UTC

Observed FT8 message patterns

Attributed sample: 66 messages
Active dates: 11 UTC dates
Estimated median S/N: -20 dB
Estimated 10th-90th percentile: -24 to -14 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 58, moderate (-15 to -9 dB) 8, 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 KD3CZT in decoded directed-looking exchanges:

F5PBG · France ×2 EA1CQ · Spain F4JZW · France F5RRS · France F6BIA · France GJ0KYZ · Jersey HK3C · Colombia ON1DGN · Belgium PC2J · Netherlands SV5BYP · Dodecanese TA2FE · Asiatic Turkey UR3LM · Ukraine

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 KD3CZT

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: FM18 · 35 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,390 km (approx.)
Last such locator decoded: 2026-09-15 01:45 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	KD3CZT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-20 03:19	40m	- / -21	IK6DLK	+10 / -	3	✓ Closing fragment
09-20 03:17	40m	- / -11	ON1DGN	-3 / -	4	Partial capture
09-20 03:14	40m	- / -11	PD7LJ	-7 / -	4	✓ Closing fragment
09-20 02:42	40m	- / -19	EA1HVS	-10 / -	2	Partial capture
09-20 02:30	40m	- / -	IW2MYH	+2 / -	3	Partial capture
09-20 01:09	40m	- / -15	MI0NWA	-7 / -	6	Partial capture
09-14 01:52	40m	- / -	CT2HEX	-8 / -	4	Partial capture
09-13 06:02	40m	- / -21	EA3BD	-18 / -	4	✓ Closing fragment
09-13 05:38	40m	- / -	F4LNM	-7 / -	4	Partial capture
09-13 05:36	40m	- / -15	DK6WS	-13 / -	3	Partial capture
09-13 05:18	40m	- / -	IU1TLG	-12 / -	2	Partial capture
09-13 05:11	40m	- / -	F1IQH	-10 / -	2	Partial capture
09-12 02:01	40m	- / -12	F5PBG	+11 / -	4	✓ Closing fragment
09-12 01:59	40m	- / -21	GM6URC	-16 / -	3	Partial capture
09-12 01:25	40m	- / -	F5PBG	-10 / -	4	Partial capture
09-08 05:06	40m	- / -11	F4EXC	-9 / -	2	✓ Closing fragment
09-08 05:02	40m	- / -11	S51CC	-15 / -	5	✓ Closing fragment
09-08 05:00	40m	- / -	DL1EMV	-11 / -	2	Partial capture
09-07 04:26	40m	-20 / -	F5PBG	-4 / -14	9	Partial capture
09-07 04:25	40m	-20 / -12	DL7VAR	-3 / -13	8	Partial capture
09-07 04:18	40m	- / -	SP5EXA	-8 / -	4	Partial capture
09-07 04:16	40m	-21 / -20	IU2HUQ	-3 / -14	6	✓ Full exchange observed
09-07 04:13	40m	- / +5	KB9ZM	-14 / -	3	✓ Closing fragment
09-07 04:05	40m	-24 / -7	GU4WRP	-6 / -	3	✓ Closing observed
09-07 04:03	40m	-22 / -	SV9/SV1ABB	- / -7	2	Partial capture
09-07 00:16	40m	- / -	EA5W	-12 / -	13	Partial capture
09-06 05:27	40m	- / -	DH5BM	-7 / -	6	Partial capture
09-06 05:25	40m	- / -	PD0WL	-11 / -	2	Partial capture
09-06 05:24	40m	- / -10	F4GWG	-5 / -	3	Partial capture
09-06 05:22	40m	- / -	PD0WL	-10 / -	2	Partial capture
09-06 05:22	40m	- / -	PD1AC	-10 / -	2	Partial capture
09-06 05:20	40m	- / -23	UW5ZM	+16 / -	11	Partial capture
09-06 05:14	40m	- / -19	PD0WL	-9 / -	6	Partial capture
09-06 05:13	40m	- / -10	EA3HMM	-8 / -	6	✓ Closing fragment
09-06 05:08	40m	- / -18	PD0WL	-7 / -	6	Partial capture
09-06 05:08	40m	- / -	F4DIA	-9 / -	4	Partial capture
09-06 05:08	40m	- / -	UW5ZM	+15 / -	11	Partial capture
09-06 05:03	40m	- / -	UW5ZM	+11 / -	2	Partial capture
09-06 02:05	40m	- / -8	LA5LDX/P	-12 / -	2	Partial capture
09-06 01:53	40m	- / -	F6FHZ	-8 / -	4	Partial capture
09-06 01:51	40m	- / -	F5PBG	+2 / -	3	Partial capture
09-06 01:47	40m	- / -	RK4FAJ	-10 / -	2	Partial capture
09-06 01:38	40m	- / -	F5PBG	-6 / -	3	Partial capture
09-06 01:30	40m	- / -	PA0KGB	+6 / -	8	Partial capture
09-05 04:49	40m	- / -25	Z34K	-8 / -	2	Partial capture
09-05 04:27	40m	- / -16	DL1GLO	+6 / -	6	✓ Closing fragment
09-05 04:23	40m	- / -13	IW8RQA	-4 / -	3	✓ Closing fragment
09-05 04:22	40m	- / -	IU1MIH	-14 / -	5	Partial capture
09-03 04:42	40m	- / -18	OE4AAC	+1 / -	2	✓ Closing fragment
09-03 04:33	40m	- / -14	DD6WF	+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
024245  -8 2320  KD3CZT EA1HVS -19 (x2)
031345  +9 1361  KD3CZT IK6DLK JN63
031415  -4 1361  KD3CZT PD7LJ JO21 (x4)
031715  -5 1038  KD3CZT ON1DGN -11 (x3)
031845  -7 1361  KD3CZT PD9OH JO21
031845  -2 1038  KD3CZT ON1DGN -11
031915 +10 1361  KD3CZT IK6DLK JN63 (x3)

20m

UTC    dB Audio  Message
234700 -19 2126  KD3CZT W4UTZ EM95 (x3)
224630 +11  823  KD3CZT DK9ZQ JO41 (x3)
224745 -14  824  F4JZW KD3CZT RR73
224830  +9 1049  KD3CZT DL3MIB JN57 (x5)
012000 -18 1674  KD3CZT ON1DGN RR73
013115 -22 1317  K7TCH KD3CZT -11 (x2)

80m

UTC    dB Audio  Message
024545  +9 2003  KD3CZT PA4G JO22

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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