9Y4DG — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Trinidad & Tobago Most frequent locator attributed to this token: FK90

Receiver-side FT8 activity involving 9Y4DG, decoded by SO8OO in southeastern Poland. 207 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 13 UTC dates in the available aggregate history. Observed between 2026-07-24 and 2026-09-10.

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 207 FT8 messages attributed to 9Y4DG as the transmitting token by decoded message structure across 13 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (91%), followed by 40 m (8%) and 10 m (0%). Several six-hour UTC windows tied for the largest share (85%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's weak S/N range (93%); the estimated median was -21 dB.

Overview

207

Messages attributed

UTC dates decoded

Active 15-min windows

-21 dB

Estimated median S/N

Bands

40m · 17 20m · 189 10m · 1

First attributed message: 2026-07-24
Last attributed message: 2026-09-10 02:03 UTC

Observed FT8 message patterns

Attributed sample: 207 messages
Active dates: 13 UTC dates
Estimated median S/N: -21 dB
Estimated 10th-90th percentile: -24 to -16 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 193, moderate (-15 to -9 dB) 14, strong (≥ -8 dB) 0.

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 9Y4DG in decoded directed-looking exchanges:

DL1GKH · Fed. Rep. of Germany ×3 HS0ZOY · Thailand ×2 F5SZB · France ×2 DL5JW · Fed. Rep. of Germany ×2 W1WCI · United States SP8PT · Poland EA4GG · Spain IU3MBY · Italy UA1WBV · European Russia DL8NW · Fed. Rep. of Germany G4UJS · England UF2F · Kaliningrad

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 9Y4DG

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: FK90 · 150 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,602 km (approx.)
Last such locator decoded: 2026-09-10 02:03 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	9Y4DG S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-10 01:23	40m	- / -3	AA2S	-17 / -	2	✓ Closing fragment
09-09 07:12	40m	- / -	ON4ZD	-12 / -	2	Partial capture
09-09 07:04	40m	- / -	DK1TBL	-18 / -	2	Partial capture
09-09 07:03	40m	- / -	ON4ZD	-13 / -	11	Partial capture
09-09 06:57	40m	- / -14	DK8HC	-10 / -	6	✓ Closing fragment
09-09 06:43	40m	- / -16	G4TTO	-22 / -	3	✓ Closing fragment
09-09 06:19	40m	- / -12	F4LVF	-8 / -	3	✓ Closing fragment
09-09 06:08	40m	- / -	OZ1KZX	-6 / -	2	Partial capture
09-09 05:58	40m	- / -16	I/DC6ST	-5 / -	8	Partial capture
09-09 05:57	40m	- / -20	UF2F	+1 / -	4	✓ Closing fragment
09-09 05:35	40m	- / -	DF7EE	-5 / -	6	Partial capture
09-09 05:24	40m	- / -	DF7EE	-8 / -	7	Partial capture
09-09 05:19	40m	- / -	DL4FP	-9 / -	5	Partial capture
09-09 05:16	40m	- / -	DF7EE	-5 / -	7	Partial capture
09-09 05:11	40m	- / -	DL5JW	-14 / -	2	✓ Closing fragment
09-09 04:17	40m	- / -20	IS0AFM	+1 / -	5	Partial capture
09-09 03:50	40m	- / -	UA3IAG	-9 / -	8	Partial capture
09-09 03:13	80m	- / -24	OH2NAG	+1 / -	4	✓ Closing fragment
09-09 03:02	80m	- / -22	GM6URC	-5 / -	3	Partial capture
09-09 02:16	80m	- / -22	OE3DSB	+14 / -	14	✓ Closing fragment
09-09 02:05	80m	- / -	UA4FKT	-4 / -	3	Partial capture
09-09 01:50	40m	- / 0	EG42SDC	-8 / -	2	Partial capture
09-08 00:32	40m	-19 / -	NK5G	- / -5	2	Partial capture
09-08 00:17	40m	- / -	K4DBC	-20 / -	2	✓ Closing fragment
09-08 00:15	40m	- / -10	F1PBZ	+10 / -	3	Partial capture
09-08 00:12	40m	- / -	F4HJG	-15 / -	2	Partial capture
09-08 00:11	40m	- / -16	G0ORC	+5 / -	2	✓ Closing fragment
09-06 07:30	40m	- / -	F4FQY	-11 / -	2	Partial capture
09-06 07:16	40m	- / -	F4FQY	-12 / -	3	Partial capture
09-06 06:34	40m	- / -14	G1KIK	-20 / -	3	✓ Closing fragment
09-06 06:22	40m	- / -	OH5CX	-12 / -	2	Partial capture
09-06 06:13	40m	- / -	OZ8MW/P	-16 / -	2	Partial capture
09-06 06:10	40m	- / +1	F1PBZ	-6 / -	2	Partial capture
09-06 06:05	40m	- / -	DL2BU	-2 / -	2	Partial capture
09-06 06:00	40m	- / -19	YL2TM	-1 / -	11	Partial capture
09-06 05:53	40m	- / -15	F4MMH	-10 / -	4	✓ Closing fragment
09-06 05:50	40m	- / -	OE3ZIO	-2 / -	3	Partial capture
09-06 05:42	40m	- / -15	F4MMH	0 / -	5	Partial capture
09-05 07:10	40m	- / -	F4VTR	-18 / -	5	Partial capture
09-05 07:05	40m	- / -22	PA3FQA	+11 / -	5	✓ Closing fragment
09-05 06:56	40m	- / -	F4VTR	-14 / -	5	Partial capture
09-05 06:46	40m	- / -9	LA1KUA	-2 / -	2	✓ Closing fragment
09-05 06:43	40m	- / -	IK4IDY	-9 / -	3	Partial capture
09-05 06:34	40m	- / -	LA1KUA	-7 / -	3	Partial capture
09-05 05:59	40m	- / -	OE8IHT	0 / -	2	Partial capture
09-05 05:49	40m	- / -	PF2A	-10 / -	4	Partial capture
09-05 04:56	40m	- / -3	DF8RU	+10 / -	3	✓ Closing fragment
09-05 04:48	40m	- / -	LZ1EV	+12 / -	5	Partial capture
09-05 04:46	40m	- / -16	F1PBZ	-10 / -	2	Partial capture
09-05 04:43	40m	- / -22	IU8PML	-6 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
070500 -11 1437  9Y4DG ON4ZD JO20 (x10)
071630 -24 1740  9Y4DG F5LPL JN16
012345 -18 2284  9Y4DG AA2S -03 (x2)
020330 -23 2072  CQ 9Y4DG FK90                         a1
021815 -18 1360  9Y4DG KC3UDZ FN20

80m

UTC    dB Audio  Message
022130 +12  246  9Y4DG OE3DSB JN78 (x7)
030230  -4 1778  9Y4DG GM6URC -22 (x3)
030400 -17 3087  9Y4DG OH5BM KP41
031300  +1 2564  9Y4DG OH2NAG KP20 (x4)

20m

UTC    dB Audio  Message
065100 -12 1479  9Y4DG DL1GKH R-17 (x2)
070500  -4 1794  9Y4DG I4BMJ JN54 (x4)
070800 -17  632  9Y4DG F5SZB R-14
072130  -9 1516  9Y4DG IK1JMJ JN35 (x3)
080100  -4 1763  9Y4DG EA4ZM -10
081130 -11 2073  9Y4DG HB9IUP JN46 (x4)

60m

UTC    dB Audio  Message
175830 -15 1034  9Y4DG SP9DB JO84

160m

UTC    dB Audio  Message
211800 -11  746  9Y4DG DL3HN JN49

10m

UTC    dB Audio  Message
081330 -11 1655  9Y4DG DN9SGE JO42 (x2)
143630 -19 1452  9Y4DG UT7EM KN78 (x3)
173700 -19 2208  9Y4DG R3GO -11 (x4)
174130 -23 1454  9Y4DG DO1YWF JO31
195530 -14  785  9Y4DG IU2RPE JN45 (x5)

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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