K1ZZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: FN31

Receiver-side FT8 activity involving K1ZZ, decoded by SO8OO in southeastern Poland. 203 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 11 UTC dates in the available aggregate history. Observed between 2026-08-03 and 2026-09-11.

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 203 FT8 messages attributed to K1ZZ as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (51%), followed by 40 m (49%). Most decodes (100%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11.1 dB.

Overview

203

Messages attributed

UTC dates decoded

Active 15-min windows

-11.1 dB

Estimated median S/N

Bands

80m · 104 40m · 99

First attributed message: 2026-08-03
Last attributed message: 2026-09-11 00:24 UTC

Observed FT8 message patterns

Attributed sample: 203 messages
Active dates: 11 UTC dates
Estimated median S/N: -11.1 dB
Estimated 10th-90th percentile: -18 to -2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 50, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 86.

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 K1ZZ in decoded directed-looking exchanges:

UX1VT · Ukraine ×2 9A3AUH · Croatia DJ0MAB · Fed. Rep. of Germany DK6XY · Fed. Rep. of Germany DL8SBD · Fed. Rep. of Germany EA7L · Spain G3OJV · England HB9TIH · Switzerland IK1BQD · Italy IK4TVP · Italy IK5EEA · Italy IN3WZS · Italy

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 K1ZZ

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: FN31 · 49 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 6,913 km (approx.)
Last such locator decoded: 2026-09-11 00:17 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	K1ZZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-11 00:23	80m	-10 / -	CT2HEX	- / -9	3	✓ Closing fragment
09-11 00:19	80m	-14 / -20	RX6DA	-14 / -11	10	✓ Full exchange observed
09-11 00:18	80m	- / -	HF5A	-9 / -	3	Partial capture
09-11 00:17	80m	-12 / -5	IZ2AMW	-12 / -4	6	✓ Full exchange observed
09-11 00:16	80m	-11 / -	OE8DDX	- / -	2	Partial capture
09-10 22:25	40m	- / -	4Z5PT	-8 / -	4	Partial capture
09-10 22:22	40m	0 / -	DJ0MAB	- / -2	2	✓ Closing fragment
09-10 22:22	40m	-2 / -	PA1AA	-18 / +7	5	✓ Closing observed
09-10 22:20	40m	-1 / -	RD9M/3	- / -8	2	Partial capture
09-10 22:19	40m	- / -	RL3K	-7 / -	3	Partial capture
09-10 22:17	40m	0 / +2	G3OJV	-2 / -	4	✓ Full exchange observed
09-10 22:16	40m	-2 / -	US5ZCO	- / -6	2	✓ Closing fragment
09-10 22:15	40m	-2 / -	TA2EE	- / -15	2	✓ Closing fragment
09-10 22:14	40m	-2 / -	KC3PCS	- / -5	2	✓ Closing fragment
09-10 22:13	40m	-4 / -	K2WPA	- / -7	2	✓ Closing fragment
09-10 22:12	40m	-3 / -	R2BQM	-20 / -16	3	✓ Closing observed
09-10 22:09	40m	-3 / -8	ON1BH	-2 / -2	6	✓ Full exchange observed
09-10 22:09	40m	-3 / -	RD7O	-15 / -2	3	✓ Closing observed
09-10 22:07	40m	-4 / -	DK6XY	-10 / +4	5	✓ Closing observed
09-10 22:04	40m	-5 / -	IN3WZS	-21 / -13	3	✓ Closing observed
09-10 22:03	40m	-5 / +2	OH2BGD	-9 / -23	7	✓ Full exchange observed
09-10 22:01	40m	-5 / -10	PD0LBY	-17 / -8	7	✓ Full exchange observed
09-10 22:00	40m	-6 / -1	IK4TVP	-18 / +1	3	✓ Full exchange observed
09-10 21:59	40m	-5 / -8	F1PBZ	+2 / -1	7	Partial capture
09-10 21:59	40m	-6 / -4	SP3JHZ	-1 / -6	5	✓ Full exchange observed
09-10 21:57	40m	-6 / -	UX1VT	-18 / -6	3	✓ Closing observed
09-10 21:56	40m	-5 / -8	9A3AUH	-11 / -9	4	✓ Full exchange observed
09-09 22:47	80m	- / -15	YO4YPC	+3 / -	4	✓ Closing fragment
09-09 22:45	80m	- / -21	DL1UDO	-7 / -	5	✓ Closing fragment
09-09 22:45	80m	- / -11	GM6URC	-12 / -	2	✓ Closing fragment
09-09 21:56	40m	-12 / -10	YO6LM	-12 / -1	4	✓ Full exchange observed
09-09 21:54	40m	-12 / -1	IK1BQD	+7 / +5	6	✓ Full exchange observed
09-09 21:54	40m	- / -	PD0LBY	-10 / -	2	Partial capture
09-09 21:51	40m	-12 / -	JY5IB	- / -14	3	✓ Closing fragment
09-09 21:46	40m	-14 / -	WB8NXR	- / -5	2	✓ Closing fragment
09-09 21:46	40m	- / -	F8DO	+1 / -	2	Partial capture
09-09 21:44	40m	-15 / +2	PD0IFI	+8 / +2	6	✓ Full exchange observed
09-09 21:40	40m	-17 / -	W1WCI	- / -1	4	✓ Closing fragment
09-09 21:40	40m	- / +9	G3PMY	-10 / -	3	Partial capture
09-09 21:38	40m	-16 / -	EA7L	-13 / +5	5	✓ Closing observed
09-09 21:37	40m	-16 / -	DL8SBD	- / -2	2	✓ Closing fragment
09-09 21:37	40m	- / -10	DK9CK	+11 / -	3	Partial capture
09-09 21:36	40m	-15 / +9	G0CMQ	-9 / +2	2	Partial capture
09-09 21:32	40m	-18 / -	VK6BAD	- / -	4	Partial capture
09-09 20:54	40m	- / -	LB7ZG	-3 / -	2	Partial capture
09-09 20:54	40m	-18 / -8	IK5EEA	-4 / -2	4	✓ Full exchange observed
09-09 20:53	40m	-20 / -	ON3PVC	-18 / -9	3	✓ Closing observed
09-09 20:53	40m	-18 / -	KF9UG	- / -2	2	✓ Closing fragment
09-09 00:52	40m	- / -14	R6LIG	-12 / -	2	Partial capture
09-09 00:51	40m	-7 / -	IU8RFW	- / -15	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
001900 -16 1742  K1ZZ RX6DA KN85
001900 -11 2160  K1ZZ HF5A JO92 (x2)
002000 -13 1742  K1ZZ RX6DA R-20 (x2)
002045 -16 2023  RX6DA K1ZZ -11
002100 -11 1742  K1ZZ RX6DA R-21 (x4)
002245 -12 2023  RX6DA K1ZZ RR73
002300 -12 1742  K1ZZ RX6DA 73
002315 -14 2023  CT2HEX K1ZZ -09 (x3)

40m

UTC    dB Audio  Message
222045  -3 2291  RD9M/3 K1ZZ FN31
222100 -12 1205  K1ZZ OZ/KD0NDU -09
222115  +1 2291  RD9M/3 K1ZZ R-08
222145  -7 2798  K1ZZ RL3K KO91
222200 -21 1309  K1ZZ PA1AA JO21
222245  +1 2291  DJ0MAB K1ZZ -02 (x2)
222345  -1 2291  PA1AA K1ZZ +07 (x3)
222500 -15 1309  K1ZZ PA1AA 73
222500 -10  988  K1ZZ 4Z5PT KM72 (x4)

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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee