4Z1TL — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Israel

Receiver-side FT8 activity involving 4Z1TL, decoded by SO8OO in southeastern Poland. 16 FT8 messages attributed to this token as transmitter, on 60m, 40m, 10m, across 2 UTC dates in the available aggregate history. Observed between 2026-10-09 and 2026-10-28.

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 16 FT8 messages attributed to 4Z1TL as the transmitting token by decoded message structure across 2 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (75%), followed by 40 m (19%) and 60 m (6%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

60m · 1 40m · 3 10m · 12

First attributed message: 2026-10-09
Last attributed message: 2026-10-28 13:04 UTC

Observed FT8 message patterns

Attributed sample: 16 messages
Active dates: 2 UTC dates
Estimated median S/N: -12 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) 4, strong (≥ -8 dB) 7.

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 4Z1TL in decoded directed-looking exchanges:

CR7BSX · Portugal DL7VAR · Fed. Rep. of Germany EA4EQ · Spain F4NPE · France OE1AES · Austria OK1UK · Czech Republic W6NWS · United States YC2OEI · Indonesia TA4SSK · Asiatic Turkey UT5ECZ · 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.

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	4Z1TL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-28 13:03	10m	-6 / -	YC2OEI	- / -14	2	✓ Closing fragment
10-28 13:02	10m	-2 / -	DL7VAR	- / -8	2	✓ Closing fragment
10-28 13:01	10m	-8 / -	OK1UK	- / -13	2	✓ Closing fragment
10-28 13:00	10m	-9 / -	F4NPE	- / -10	2	✓ Closing fragment
10-28 12:59	10m	-15 / -	OE1AES	- / -8	2	✓ Closing fragment
10-28 12:58	10m	-16 / -	W6NWS	- / -15	2	✓ Closing fragment
10-24 14:21	10m	- / -13	CR7BSX	-4 / -	2	✓ Closing fragment
10-24 12:10	10m	- / -5	EA4EQ	-14 / -	2	✓ Closing fragment
10-09 03:02	40m	-19 / -	C5R	- / -18	2	Partial capture
10-09 02:49	60m	- / -13	UT5ECZ	-12 / -	2	✓ Closing fragment
10-09 02:46	60m	-24 / +1	TA4SSK	-16 / -	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
121230 -22 1425  4Z1TL EA4FL R+00
142100  -4 2347  4Z1TL CR7BSX R-13 (x2)
125815 -17 1456  W6NWS 4Z1TL -15 (x2)
125915 -18 1456  OE1AES 4Z1TL R-08 (x2)
130015 -12 1457  F4NPE 4Z1TL -10 (x2)
130115 -11 1457  OK1UK 4Z1TL -13 (x2)
130215  -1 1457  DL7VAR 4Z1TL -08 (x2)
130345  -7 1456  YC2OEI 4Z1TL -14 (x2)

40m

UTC    dB Audio  Message
025815  -5 2837  RW9WJ 4Z1TL -15
030245 -18 1270  C5R 4Z1TL -18 (x2)

60m

UTC    dB Audio  Message
024600 -15  927  4Z1TL TA4SSK R+01
024615 -24 1632  TA4SSK 4Z1TL RR73
024630 -16  928  4Z1TL TA4SSK 73
024930 -12 1126  4Z1TL UT5ECZ R-13 (x2)

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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