T77NC — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: San Marino Most frequent locator attributed to this token: JN63

Receiver-side FT8 activity involving T77NC, decoded by SO8OO in southeastern Poland. 1,383 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-09-05 and 2026-09-25.

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 1,383 FT8 messages attributed to T77NC as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (70%), followed by 80 m (30%). The busiest six-hour window was 22:00-04:00 UTC, containing 46% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (73%); the estimated median was -5 dB.

Overview

1,383

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

80m · 412 40m · 971

First attributed message: 2026-09-05
Last attributed message: 2026-09-25 17:33 UTC

Observed FT8 message patterns

Attributed sample: 1,383 messages
Active dates: 5 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -13 to +4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 76, moderate (-15 to -9 dB) 295, strong (≥ -8 dB) 1,012.

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 T77NC in decoded directed-looking exchanges:

DF8RU · Fed. Rep. of Germany ×2 DJ0MAB · Fed. Rep. of Germany ×2 DK7AO · Fed. Rep. of Germany ×2 DL3MIB · Fed. Rep. of Germany ×2 DL9KM · Fed. Rep. of Germany ×2 DM1SV · Fed. Rep. of Germany ×2 EA7P · Spain ×2 F5MOO · France ×2 F5VHQ · France ×2 HF5A · Poland ×2 I1RJP · Italy ×2 I8OHQ · Italy ×2

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 T77NC

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: JN63 · 495 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 979 km (approx.)
Last such locator decoded: 2026-09-25 17:33 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	T77NC S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-25 17:33	40m	-10 / -13	UA1AEL	-10 / -12	3	Partial capture
09-25 17:32	40m	- / -	IZ2QPP	+1 / -	4	Partial capture
09-25 17:32	40m	-10 / -	G4SRT	- / -15	2	✓ Closing fragment
09-25 17:30	40m	- / -	9A3TGT	+4 / -	5	Partial capture
09-25 17:29	40m	- / -	IU4PPL	-4 / -	2	Partial capture
09-25 17:29	40m	-5 / -1	UR5EDX	+13 / +2	5	✓ Full exchange observed
09-25 17:28	40m	- / -	F8GAF	-1 / -	3	Partial capture
09-25 17:28	40m	- / -	IW2DNI	-4 / -	3	Partial capture
09-25 17:27	40m	- / -	ER3PM	-5 / -	5	Partial capture
09-25 17:26	40m	-5 / -	YL3ARH	- / -17	2	✓ Closing fragment
09-25 17:25	40m	- / -17	RM4N	-18 / -	2	✓ Closing fragment
09-25 17:23	40m	-5 / -17	SP2JJ	+6 / -15	3	Partial capture
09-25 17:21	40m	- / -	F4JJI	0 / -	4	Partial capture
09-25 17:18	40m	-8 / -16	R3IX	-8 / -2	4	✓ Full exchange observed
09-25 17:17	40m	- / -	IZ4IRO	+3 / -	12	Partial capture
09-25 17:17	40m	-7 / +3	DG6ITP	-4 / +1	5	✓ Full exchange observed
09-25 17:17	40m	- / -	DK6XY	+6 / -	24	Partial capture
09-25 17:16	40m	- / -	DK1HSI	-7 / -	3	Partial capture
09-25 17:15	40m	- / -	S51PV	-10 / -	5	Partial capture
09-25 17:14	40m	-8 / -6	M5RJC	0 / -8	4	✓ Full exchange observed
09-25 17:13	40m	-6 / -	YO4FZV	-14 / +1	8	✓ Closing observed
09-25 17:12	40m	-9 / -8	IZ0RPS	+1 / -5	3	✓ Full exchange observed
09-25 17:12	40m	- / -	IW2DNI	-10 / -	2	Partial capture
09-25 17:09	40m	- / -	DL3BLA	+1 / -	5	Partial capture
09-25 17:08	40m	-8 / -11	DM1SV	-5 / -	5	✓ Closing observed
09-25 17:06	40m	- / -16	US7KC	-2 / -	2	✓ Closing fragment
09-25 17:04	40m	-6 / -	S53AK	-2 / 0	11	Partial capture
09-25 17:04	40m	- / -	ON4MHZ	-6 / -	3	Partial capture
09-25 17:02	40m	- / -	OE2VEL	+17 / -	7	Partial capture
09-25 17:02	40m	- / -	DH0BRO	-4 / -	2	Partial capture
09-25 17:00	40m	- / -15	RN6MA	-4 / -	2	Partial capture
09-25 17:00	40m	-3 / -11	RT7B	-12 / -4	4	✓ Full exchange observed
09-25 16:59	40m	- / -	SP5DFG	-8 / -	4	Partial capture
09-25 16:59	40m	-7 / -12	OZ5AGJ	-10 / -14	4	✓ Full exchange observed
09-25 16:58	40m	-3 / -	IW5BTT	-14 / -	2	✓ Closing observed
09-25 16:58	40m	-12 / -	DK6XY	+7 / -7	34	Partial capture
09-25 16:56	40m	-7 / -	OE2VEL	+17 / -5	5	Partial capture
09-25 16:56	40m	- / -14	IK5NQI	-3 / -	3	Partial capture
09-25 16:55	40m	- / -	YO6BLM	-4 / -	3	Partial capture
09-25 16:53	40m	- / -	9A3K	+8 / -	4	Partial capture
09-25 16:53	40m	- / -	IW2DNI	-6 / -	7	Partial capture
09-25 16:51	40m	- / -6	9A5RS	-7 / -	4	✓ Closing fragment
09-25 16:50	40m	-8 / -1	YU2M	+8 / -6	4	✓ Full exchange observed
09-25 16:49	40m	- / -8	IK5NQI	-4 / -	2	Partial capture
09-08 02:47	80m	- / -6	S52UF	-12 / -	4	Partial capture
09-08 02:46	80m	-14 / -	EC3A	- / -6	2	✓ Closing fragment
09-08 02:45	80m	-8 / -10	HA5AIL	+5 / -7	4	✓ Full exchange observed
09-08 02:41	80m	- / -	HA5AIL	-2 / -	3	Partial capture
09-08 02:38	80m	- / -	SV1QEW	-3 / -	3	Partial capture
09-08 02:38	80m	-11 / -	WA3OFR	-16 / -12	4	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
173145  -2  295  CQ T77NC JN63
173200  +5  295  T77NC 9A3TGT JN85
173215 -10  295  G4SRT T77NC -15
173230 +10 2315  T77NC IZ2QPP JN46
173230  +3  295  T77NC 9A3TGT JN85
173245 -11  295  G4SRT T77NC RR73
173300 -12 1247  T77NC UA1AEL KO59
173300  +1 2315  T77NC IZ2QPP JN46
173315  -9  295  CQ T77NC JN63
173330  -9 1247  T77NC UA1AEL -13
173330  -3 2315  T77NC IZ2QPP JN46
173345 -10  295  UA1AEL T77NC R-12
173400  +0  298  T77NC SP2JAP -11
173400  -3 2315  T77NC IZ2QPP JN46
173400 -11  912  T77NC DL1PY JN58

80m

UTC    dB Audio  Message
024230  -3  721  T77NC HA5AIL JN96
024300 -10  721  CQ T77NC JN63
024330 -12  720  UB4CJS T77NC -16
024400  -5  721  CQ T77NC JN63
024500  -8  721  HA5AIL T77NC -07
024515  +3  721  T77NC HA5AIL R-10
024530  -8  721  HA5AIL T77NC RR73
024545  +7  721  T77NC HA5AIL 73
024600  -6  721  CQ T77NC JN63
024630 -16  721  EC3A T77NC R-06 (x2)
024715 -14 1908  T77NC S52UF -06 (x4)

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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