T77RN — 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 T77RN, decoded by SO8OO in southeastern Poland. 3,568 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 56 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-09.

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 3,568 FT8 messages attributed to T77RN as the transmitting token by decoded message structure across 56 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (72%), followed by 80 m (11%) and 10 m (8%). Most decodes (73%) fell within the six-hour window 18:00-00:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -5 dB.

Overview

3,568

Messages attributed

UTC dates decoded

284

Active 15-min windows

-5 dB

Estimated median S/N

Bands

160m · 1 80m · 407 60m · 46 40m · 261 20m · 2,569 10m · 284

First attributed message: 2026-06-06
Last attributed message: 2026-09-09 22:56 UTC

Observed FT8 message patterns

Attributed sample: 3,568 messages
Active dates: 56 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12.8 to +3 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 172, moderate (-15 to -9 dB) 829, strong (≥ -8 dB) 2,567.

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 T77RN in decoded directed-looking exchanges:

F1PBZ · France ×5 UR5WCS · Ukraine ×5 CT7AQH · Portugal ×4 VO1ACZ · Canada ×3 JA6FIO · Japan ×3 DK7JR · Fed. Rep. of Germany ×2 SP1ZMO · Poland ×2 R3KKG · European Russia ×2 DB8JV · Fed. Rep. of Germany ×2 G5GMN · England ×2 DO2XYZ · Fed. Rep. of Germany ×2 EI9DZB · Ireland ×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 T77RN

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 · 678 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 979 km (approx.)
Last such locator decoded: 2026-09-09 22:56 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	T77RN S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-09 22:58	60m	- / -	IZ3XBL	-4 / -	3	Partial capture
09-09 22:53	80m	- / -4	ON4CMT	-5 / -	3	✓ Closing fragment
09-09 22:51	80m	-16 / -11	ON4MAP	-12 / -	4	✓ Closing observed
09-09 22:49	80m	-18 / -	ON4ZD	-6 / -	2	✓ Closing observed
09-09 22:46	80m	-12 / -15	9A2TN	-6 / +1	5	✓ Full exchange observed
09-09 22:46	80m	-16 / -18	RW9AW	-5 / -1	6	✓ Full exchange observed
09-09 22:45	80m	- / +2	SP9CLQ	+19 / -	3	✓ Closing fragment
09-09 22:43	80m	-18 / -	OH3GBW	-2 / +3	4	✓ Closing observed
09-09 22:42	80m	-13 / -14	ER3PM	+11 / -	5	✓ Full exchange observed
09-09 22:40	60m	- / -19	EH1PDA	-14 / -	2	Partial capture
09-09 22:33	60m	-8 / -24	EH1PDA	-14 / +1	4	Partial capture
09-09 22:33	60m	-4 / -6	ON4ZD	-7 / +4	9	✓ Full exchange observed
09-09 22:31	60m	-10 / -3	HB9MFD	-3 / -	5	✓ Full exchange observed
09-09 22:27	60m	- / -8	IT9GSF	-13 / -	3	✓ Closing fragment
09-09 22:24	60m	-6 / -9	DK5WL	-7 / -	6	✓ Full exchange observed
09-09 22:24	60m	-8 / -17	F4IRP	-18 / +10	4	✓ Full exchange observed
09-09 22:22	60m	-11 / -	YL3NE	- / +9	2	✓ Closing fragment
09-09 22:20	60m	-8 / -22	TA4RC	-20 / -8	6	✓ Full exchange observed
09-09 22:20	60m	-7 / -	SP9HAB	- / -5	2	✓ Closing fragment
09-09 22:19	60m	-5 / -17	OH6MW	+13 / -	4	✓ Full exchange observed
09-09 22:17	40m	- / -18	G0ORC	-4 / -	2	Partial capture
09-09 22:11	40m	- / +6	PD7BDN	-1 / -	3	✓ Closing fragment
09-09 22:11	40m	- / -8	SQ100PKP	-18 / -	2	Partial capture
09-09 22:03	40m	- / -1	SV1CNS	+4 / -	3	✓ Closing fragment
09-09 21:59	40m	- / -4	F6IRA	-6 / -	5	✓ Closing fragment
09-09 21:58	40m	- / -8	G3PMY	-5 / -	10	Partial capture
09-08 21:05	80m	-11 / -15	SV8/F2VX	-7 / -6	2	Partial capture
09-08 21:04	80m	-14 / -	EA4DL	- / -10	2	Partial capture
09-08 21:02	80m	-9 / -	DO1OAS	- / -14	3	✓ Closing fragment
09-08 21:01	80m	- / -	SV8/F2VX	0 / -	2	Partial capture
09-08 20:59	80m	-11 / -13	F8BJI	+1 / -	7	✓ Closing observed
09-08 20:57	80m	-14 / -	DO9FSE	-16 / +3	3	✓ Closing observed
09-08 20:56	80m	-13 / -	EA5RO	-8 / 0	7	✓ Closing observed
09-08 20:55	80m	-7 / -6	OK2CLW	+12 / -	13	✓ Full exchange observed
09-08 20:55	80m	-10 / -12	DL9DAJ	-3 / -4	5	✓ Full exchange observed
09-08 20:55	80m	-13 / -15	IK2OLD	+3 / -	7	✓ Full exchange observed
09-08 20:53	80m	-9 / -20	UR3LM	+15 / +2	5	✓ Full exchange observed
09-08 20:52	80m	-8 / -15	EW8CW	+1 / 0	5	✓ Full exchange observed
09-08 20:50	80m	- / -	SP9FZH	+10 / -	2	Partial capture
09-08 20:50	80m	-11 / -	DK4RH	0 / -6	6	Partial capture
09-08 20:43	80m	- / -	DO3SPR	-5 / -	3	Partial capture
09-08 20:41	80m	- / -	DL9DAJ	+1 / -	3	Partial capture
09-08 20:41	80m	- / -	G4DBW	-6 / -	2	Partial capture
09-08 20:41	80m	- / -	ON4MAP	-14 / -	6	Partial capture
09-04 18:53	80m	- / -	UA3ZQN	0 / -	4	Partial capture
09-04 18:52	80m	+2 / -	JI3VUB	- / -	2	Partial capture
08-30 23:10	80m	- / -	OH1ZE	-1 / -	9	Partial capture
08-30 23:06	80m	-16 / -	I1YDT	- / 0	2	Partial capture
08-30 23:02	80m	-8 / -12	DJ3JD	-4 / +1	4	✓ Full exchange observed
08-30 22:59	80m	- / -	I1YDT	-13 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
223600  -6  582  ON4ZD T77RN +04 (x3)
223715  -7 1224  T77RN ON4ZD R-06
223730  -2  582  ON4ZD T77RN RR73
223745  -6 1223  T77RN ON4ZD 73
223800  -4  582  CQ T77RN JN63 (x4)
224015 -15 2049  T77RN EH1PDA -19 (x2)
225845  -3 1784  T77RN IZ3XBL JN55 (x3)

80m

UTC    dB Audio  Message
225000 -11  510  CQ T77RN JN63 (x2)
225115 -10 1392  T77RN ON4MAP JO20 (x2)
225200 -16  510  ON4MAP T77RN RR73
225215 -10 1392  T77RN ON4MAP 73
225230 -18  510  CQ T77RN JN63 (x2)
225315  -5 1841  T77RN ON4CMT JO21 (x3)
225500 -19  510  CQ T77RN JN63 (x4)

40m

UTC    dB Audio  Message
220215  -7  671  T77RN G3PMY -08 (x2)
220315  +4  443  T77RN SV1CNS KM18 (x2)
220345  -4  671  T77RN G3PMY -08 (x2)
220415  +7  443  T77RN SV1CNS 73
220615 -11 2249  T77RN G0ORC -18
221115 -18 2137  T77RN SQ100PKP -08
221145  -7 1896  T77RN PD7BDN JO22 (x3)
221315 -18 2136  T77RN SQ100PKP -09
221745  +0  621  T77RN G0ORC -18 (x2)

160m

UTC    dB Audio  Message
220300 +10 2736  T77RN SP2LLP JO94 (x10)

20m

UTC    dB Audio  Message
174730  +3  317  G8ANJ T77RN -09 (x2)
174815 +14 2766  T77RN EA5JLN IM99
174830  -1  317  EA5JLN T77RN +15
174845 +14 2766  T77RN EA5JLN R+00
174900 +11  317  EA5JLN T77RN RR73
174915 +13 2766  T77RN EA5JLN 73
174930  +2  317  CQ T77RN JN63
175000  +3  317  R4UAS T77RN -15
175115  +7 2013  T77RN DL6LAG JO44
175115 +14  317  T77RN RV6AJJ KN94
175130  +8  317  PA5TOM T77RN -14
175145  +0 2013  T77RN DL6LAG JO44
175215 +10  317  T77RN RV6AJJ KN94 (x2)

10m

UTC    dB Audio  Message
111045  -8 2350  T77RN DJ3JD JO52 (x15)

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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