I/DH3YAK — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Italy

Receiver-side FT8 activity involving I/DH3YAK, decoded by SO8OO in southeastern Poland. 1,238 FT8 messages attributed to this token as transmitter, on 60m, 40m, across 14 UTC dates in the available aggregate history. Observed between 2026-08-22 and 2026-09-04.

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 1,238 FT8 messages attributed to I/DH3YAK as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (70%), followed by 40 m (30%). The busiest six-hour window was 14:00-20:00 UTC, containing 47% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (70%); the estimated median was -18 dB.

Overview

1,238

Messages attributed

UTC dates decoded

189

Active 15-min windows

-18 dB

Estimated median S/N

Bands

60m · 865 40m · 373

First attributed message: 2026-08-22
Last attributed message: 2026-09-04 04:25 UTC

Observed FT8 message patterns

Attributed sample: 1,238 messages
Active dates: 14 UTC dates
Estimated median S/N: -18 dB
Estimated 10th-90th percentile: -23 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 866, moderate (-15 to -9 dB) 307, strong (≥ -8 dB) 65.

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 I/DH3YAK in decoded directed-looking exchanges:

DG4BBK · Fed. Rep. of Germany ×2 R440L · European Russia ×2 DG4LXM · Fed. Rep. of Germany DL1PSK · Fed. Rep. of Germany SV6JUA · Greece W9XYZ · United States 5B4ALJ · Cyprus DD3VV · Fed. Rep. of Germany DL1UDO · Fed. Rep. of Germany DL7UKM · Fed. Rep. of Germany EA2EGI · Spain EB3ENW · Spain

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	I/DH3YAK S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 04:55	60m	- / -16	PA7MM	0 / -	2	Partial capture
09-04 04:43	60m	- / -	OH1IB	-1 / -	2	Partial capture
09-04 04:39	60m	- / -10	DM5CF	-11 / -	2	Partial capture
09-04 04:22	60m	- / -10	EA5JHD	-12 / -	2	Partial capture
09-04 04:20	60m	-15 / -	<...>	-14 / -	2	✓ Closing fragment
09-04 03:52	60m	-16 / -	<...>	- / -	4	Partial capture
09-04 03:39	60m	-21 / -	<...>	+4 / -	4	✓ Closing fragment
09-03 06:00	60m	-22 / -	<...>	- / -	2	Partial capture
09-03 05:57	60m	-22 / -	<...>	- / -	3	✓ Closing fragment
09-03 05:50	60m	- / -	DL6ZAJ	-2 / -	2	Partial capture
09-03 05:47	60m	-19 / +8	DC9JVN	-15 / 0	4	Partial capture
09-03 05:38	60m	-19 / -	EA8CZL	- / -18	3	Partial capture
09-03 05:29	60m	- / -	<...>	-2 / -	2	✓ Closing fragment
09-03 05:26	60m	- / +5	PA1AW	-1 / -	3	Partial capture
09-03 05:14	60m	-16 / -	<...>	-4 / -	3	✓ Closing fragment
09-03 05:11	60m	-17 / -	<...>	-15 / -	2	✓ Closing fragment
09-03 05:10	60m	- / -14	SP3AVS	-16 / -	2	Partial capture
09-03 05:07	60m	-22 / -	<...>	-9 / -	2	✓ Closing fragment
09-03 04:58	60m	-21 / -	<...>	-17 / -	4	✓ Closing fragment
09-03 04:47	60m	- / -	<...>	-14 / -	2	✓ Closing fragment
09-03 04:02	60m	- / -14	F4LTX	-11 / -	2	Partial capture
09-03 03:44	60m	-21 / -	KE9I	- / -	3	Partial capture
09-03 03:28	60m	- / -6	IV3DSG	+2 / -	2	Partial capture
09-03 03:28	60m	-17 / -	<...>	-10 / -	3	✓ Closing fragment
09-03 03:18	60m	-15 / -	<...>	- / -	2	Partial capture
09-03 03:07	60m	-16 / -	5B4ALJ	- / +2	3	✓ Closing fragment
09-03 03:07	60m	-16 / -	<...>	+3 / -	2	✓ Closing fragment
09-03 03:04	60m	-18 / -	<...>	- / -	2	Partial capture
09-03 02:58	60m	-13 / -	<...>	-4 / -	5	✓ Closing fragment
09-03 01:27	60m	- / -12	LB4PI	0 / -	2	Partial capture
09-03 00:55	60m	-20 / -	W2AAS	- / -	2	Partial capture
09-02 18:43	60m	-17 / -	ES2IPA	- / -6	3	Partial capture
09-02 17:26	60m	-12 / -	<...>	-8 / -	4	✓ Closing fragment
09-02 03:21	60m	-21 / -	<...>	+6 / -	2	✓ Closing fragment
09-01 06:04	60m	-20 / -	<...>	- / -	3	✓ Closing fragment
09-01 06:04	60m	-24 / 0	F5LMJ	-21 / 0	2	Partial capture
09-01 06:02	60m	-17 / -	<...>	-2 / -	2	✓ Closing fragment
09-01 05:53	60m	-20 / -	<...>	-9 / -	2	✓ Closing fragment
09-01 05:39	60m	- / -14	DJ7JB	+2 / -	3	Partial capture
09-01 05:13	60m	-13 / -	<...>	- / -	3	Partial capture
09-01 05:08	60m	-18 / -	<...>	-19 / -	2	✓ Closing fragment
09-01 05:04	60m	-19 / -	<...>	- / -	3	Partial capture
09-01 04:57	60m	- / -	<...>	-10 / -	2	✓ Closing fragment
08-31 17:49	60m	-15 / -	<...>	- / -	2	✓ Closing fragment
08-31 17:43	60m	-15 / -	<...>	+2 / -	4	✓ Closing fragment
08-31 04:24	60m	-18 / -	<...>	- / -	2	Partial capture
08-30 16:11	40m	- / -	R2DYN	-2 / -	2	Partial capture
08-30 15:58	40m	- / -	R4FCK	-3 / -	2	Partial capture
08-30 15:57	60m	-20 / -	<...>	- / -	2	✓ Closing fragment
08-30 15:40	40m	-12 / -	<...>	-3 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
042000 -14 1412  I/DH3YAK <...> 73
042100 -15 1099  <...> I/DH3YAK
042215 -18 1100  KD5CMW I/DH3YAK -15
042230 -13 1101  I/DH3YAK EA5JHD -10 (x2)
042330 -11 1101  I/DH3YAK <...> RR73
042415 -19 1099  CQ I/DH3YAK (x2)
043645  -9  954  I/DH3YAK <...> RR73
043915 -10 1411  I/DH3YAK DM5CF JO60 (x2)
044315  -1 1802  I/DH3YAK OH1IB KP10 (x2)
045515  -1  943  I/DH3YAK PA7MM JO23 (x2)

40m

UTC    dB Audio  Message
155815  -1  597  I/DH3YAK R4FCK LO23 (x2)
155930 -10  596  I/DH3YAK R440L RR73
155945  -8 2179  I/DH3YAK RU4SS LO36
160015  +6  596  I/DH3YAK RN6HK LN14
160030 -11  596  R4HHG I/DH3YAK R-16
160330  -7  596  UA1CFF I/DH3YAK -19
160345  +6  596  I/DH3YAK RN6HK LN14
160800  -5  596  R0AH I/DH3YAK -02
160845  -5  597  I/DH3YAK UA4CCH LO21
161115  -2 2180  I/DH3YAK R2DYN KO85 (x2)
161215 -15 2234  I/DH3YAK RM8W LO75
123815 -18 2214  CQ I/DH3YAK
154430 -14 2101  <...> I/DH3YAK

20m

UTC    dB Audio  Message
131430  -1 1080  I/DH3YAK <...> RR73
131630  -1 1080  I/DH3YAK TA1MB -20

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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