W9ZCL — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN62

Receiver-side FT8 activity involving W9ZCL, decoded by SO8OO in southeastern Poland. 66 FT8 messages attributed to this token as transmitter, on 20m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-08-22.

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 W9ZCL as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%). Most decodes (94%) fell within the six-hour window 01:00-07:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-8 dB

Estimated median S/N

Bands

20m · 66

First attributed message: 2026-06-07
Last attributed message: 2026-08-22 04:37 UTC

Observed FT8 message patterns

Attributed sample: 66 messages
Active dates: 8 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -17 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 14, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 34.

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 W9ZCL in decoded directed-looking exchanges:

R6FFB · European Russia ×2 4X1UF · Israel CR7BUJ · Portugal DL3MIB · Fed. Rep. of Germany DL4RBR · Fed. Rep. of Germany EC3A · Spain EW1MN · Belarus F4HTA · France IT9LCC · Sicily IW0ECV · Italy OE5CCN · Austria T77BL · San Marino

Most frequent locator attributed to W9ZCL

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: EN62 · 28 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,633 km (approx.)
Last such locator decoded: 2026-08-08 04:39 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	W9ZCL S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-22 04:52	20m	- / -14	DL4RBR	-5 / -	9	✓ Closing fragment
08-22 04:52	20m	- / -	DF1VV	+16 / -	2	Partial capture
08-22 04:52	20m	- / -	F6GGA	-4 / -	2	Partial capture
08-22 04:37	20m	- / -23	R6FFB	+17 / -	6	✓ Closing fragment
08-22 04:35	20m	- / -20	IU3WNU	+1 / -	2	Partial capture
08-22 04:34	20m	-16 / -	DL3MIB	-3 / -5	2	✓ Closing observed
08-08 04:40	20m	- / -	RA4Y	-2 / -	2	Partial capture
08-08 04:40	20m	- / -	UA6HGM	-2 / -	2	Partial capture
07-28 20:16	20m	- / -13	CR7BUJ	-10 / -	2	✓ Closing fragment
07-25 05:02	20m	- / -12	YO8RQP	-2 / -	2	✓ Closing fragment
07-25 04:55	20m	- / -	YO8RQP	-1 / -	3	Partial capture
07-25 04:52	20m	- / -	R2BQM	-11 / -	2	Partial capture
07-25 04:52	20m	- / -	YO8RQP	-1 / -	3	Partial capture
07-25 04:51	20m	- / -9	T77BL	-8 / -	2	✓ Closing fragment
07-19 05:20	20m	- / -	F4JCU	-2 / -	2	Partial capture
07-19 05:17	20m	- / +3	IW0ECV	-3 / -	5	✓ Closing fragment
07-19 05:16	20m	- / -	UX0KR	+2 / -	4	Partial capture
07-19 05:13	20m	-20 / -	ZB2FTY	- / +5	2	Partial capture
07-04 02:39	20m	- / -	UR4QWW	-24 / -	2	Partial capture
06-29 23:21	20m	- / -7	EC3A	-13 / -	3	✓ Closing fragment
06-29 23:01	20m	- / -8	F4HTA	+4 / -	2	✓ Closing fragment
06-26 03:38	20m	- / -9	4X1UF	-9 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
044015 +19 2478  W9ZCL R6FFB 73
045215  -5 2640  W9ZCL F6GGA JN37
045215 +18 2477  W9ZCL DF1VV JN39
045245  -8 1652  W9ZCL DL4RBR JN59
045245 +14 2477  W9ZCL DF1VV JN39
045315  -4 2639  W9ZCL F6GGA JN37
045315  -3 1652  W9ZCL DL4RBR JN59 (x8)
144600 -14  863  W9ZCL OE5CCN RR73

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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