ON9TT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO21

Receiver-side FT8 activity involving ON9TT, decoded by SO8OO in southeastern Poland. 104 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-08 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 104 FT8 messages attributed to ON9TT as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (50%), followed by 20 m (46%) and 40 m (4%). Most decodes (76%) fell within the six-hour window 08:00-14:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

104

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 4 20m · 48 10m · 52

First attributed message: 2026-06-08
Last attributed message: 2026-09-04 07:05 UTC

Observed FT8 message patterns

Attributed sample: 104 messages
Active dates: 14 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -18 to -3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 48, 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 ON9TT in decoded directed-looking exchanges:

F1PBZ · France ×2 CN2DX · Morocco DK3HV · Fed. Rep. of Germany F4JCU · France IK1MJK · Italy IZ1ANK · Italy OK6PL · Czech Republic ON4JMV · Belgium SP9JCN · Poland SV2CLJ · Greece DA0WWA · Fed. Rep. of Germany EA5JXM · 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.

Most frequent locator attributed to ON9TT

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: JO21 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-09-04 07:05 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	ON9TT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-04 07:18	40m	- / -8	OV6ZM	-10 / -	2	✓ Closing fragment
09-04 07:06	40m	- / -9	DM5KK	+13 / -	3	✓ Closing fragment
09-04 07:03	40m	-16 / -5	DF0AWG	+4 / -	3	✓ Full exchange observed
08-29 17:01	40m	- / 0	DF8RU	+8 / -	2	✓ Closing fragment
08-22 08:11	10m	-14 / -6	SV2CLJ	-6 / +1	3	✓ Full exchange observed
08-19 06:52	10m	- / -	DO1FZL	-12 / -	10	Partial capture
08-04 19:48	40m	- / -9	<...>	-12 / -	2	Partial capture
08-04 19:22	40m	- / -5	DM5JBN	-3 / -	3	✓ Closing fragment
08-04 19:16	40m	- / +5	DL3NA	-7 / -	2	Partial capture
08-04 18:06	40m	- / -	E70SZ	-10 / -	2	✓ Closing fragment
08-04 17:16	40m	- / +1	DL7GW	-3 / -	3	Partial capture
08-04 17:08	40m	- / -8	DL1KYF	-17 / -	3	Partial capture
08-04 16:26	40m	- / -	DL6KIX	-11 / -	2	Partial capture
08-04 16:26	40m	- / -2	DJ0MDC	-6 / -	3	✓ Closing fragment
08-04 15:04	40m	- / -	DL1NEO	-9 / -	2	✓ Closing fragment
08-04 14:59	40m	- / -19	DK4FH	-9 / -	2	✓ Closing fragment
08-04 11:27	40m	- / -	DL3AWB	-8 / -	2	✓ Closing fragment
08-03 19:16	40m	- / -11	IV3VFP	-8 / -	3	✓ Closing fragment
08-03 19:07	40m	- / -13	DL9KM	-10 / -	2	✓ Closing fragment
08-03 18:53	40m	- / -8	RA4Y	-12 / -	3	✓ Closing fragment
08-03 17:47	40m	- / -19	UA4FKT	-10 / -	2	✓ Closing fragment
07-31 19:11	40m	- / -	DK7AO	-14 / -	7	Partial capture
07-31 15:44	40m	- / -1	DL4JTH	-10 / -	2	✓ Closing fragment
07-31 10:15	40m	- / 0	DK6WH	-13 / -	2	✓ Closing fragment
07-31 08:30	20m	-8 / -	YT1KN	- / -17	6	✓ Closing fragment
07-27 12:16	20m	- / -5	F1PBZ	-7 / -	2	✓ Closing fragment
07-27 09:29	20m	- / +4	OK1AYZ	-11 / -	3	✓ Closing fragment
07-24 13:52	10m	- / -	PD9FLX	-6 / -	4	Partial capture
07-24 13:49	10m	-12 / -1	IK4JPP	-18 / +2	2	Partial capture
07-24 13:44	10m	-15 / -	OE6DRG	- / -19	2	Partial capture
07-24 13:35	10m	-4 / +2	F4JCU	-9 / +7	4	✓ Full exchange observed
07-24 13:32	10m	-6 / -	SP9JCN	- / -3	2	✓ Closing fragment
07-24 13:31	10m	-9 / -17	ON4JMV	-1 / -14	19	✓ Full exchange observed
07-24 13:30	10m	-6 / -	OK6PL	- / -10	2	✓ Closing fragment
07-24 13:19	10m	-10 / -	DK3HV	-4 / -	3	✓ Closing observed
07-24 13:12	10m	-10 / -14	IK1MJK	-10 / -	4	✓ Closing observed
07-24 13:09	10m	-8 / -15	PD9FLX	-3 / -16	17	Partial capture
07-24 13:07	10m	-11 / +4	F1PBZ	+2 / -	5	✓ Full exchange observed
07-19 10:37	40m	- / -10	DL0IPA	-20 / -	2	✓ Closing fragment
07-15 08:45	20m	-20 / -	UT7UJ	+3 / -	2	✓ Closing observed
06-30 08:05	20m	-13 / +9	TM8WWA	-18 / +2	5	✓ Full exchange observed
06-29 17:44	40m	- / -25	TM2WWA	-17 / -	2	Partial capture
06-29 14:57	20m	- / -3	DA0WWA	+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
065430 +17 2715  ON9TT SN100PKP -03
065600 -21 1771  ON9TT EG42SDC -13
070330  +3  379  ON9TT DF0AWG -05
070345 -16 1037  DF0AWG ON9TT R+11
070400  +4  379  ON9TT DF0AWG RR73
070515 -16 1037  CQ ON9TT JO21
070600 +13 2608  ON9TT DM5KK JO60 (x3)
071800 -10 1726  ON9TT OV6ZM -08 (x2)
083230 -19 1333  ON9TT DJ0BS -02
083730  -6 1037  ON9TT OE1AVO JN88
083900 -19 1037  ON9TT ON5LC -15
084300  -4 1962  ON9TT SN40KZE +07

10m

UTC    dB Audio  Message
065230 -14 1210  ON9TT DO1FZL JO50
065245 -16 1210  CQ ON9TT JO21                         a1
065300 -12 1210  ON9TT DO1FZL JO50 (x2)
065345 -15 1211  CQ ON9TT JO21
065400 -12 1210  ON9TT DO1FZL JO50 (x7)
081100  -5  568  ON9TT SV2CLJ -06
081115 -14  876  SV2CLJ ON9TT R+01
081130  -6  568  ON9TT SV2CLJ RR73

20m

UTC    dB Audio  Message
093200  -9 1535  ON9TT OK1AYZ 73
121630  -6 2769  ON9TT F1PBZ -05 (x2)
164930 -16  838  ON9TT EA5JXM 73
082745  -2  824  <...> ON9TT JO21
082815  -2  824  <HF44PW> ON9TT JO21
082845  -3  823  CQ ON9TT JO21 (x3)
083045  -4  824  YT1KN ON9TT -17 (x6)

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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