CT1DOF — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Portugal Most frequent locator attributed to this token: IN51

Receiver-side FT8 activity involving CT1DOF, decoded by SO8OO in southeastern Poland. 87 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-08-30.

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 87 FT8 messages attributed to CT1DOF as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (61%), followed by 40 m (26%) and 20 m (13%). Several six-hour UTC windows tied for the largest share (97%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 53 40m · 23 20m · 11

First attributed message: 2026-07-07
Last attributed message: 2026-08-30 20:49 UTC

Observed FT8 message patterns

Attributed sample: 87 messages
Active dates: 6 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 20, moderate (-15 to -9 dB) 34, strong (≥ -8 dB) 33.

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 CT1DOF in decoded directed-looking exchanges:

9J2FI · Zambia ×2 EA5HM · Spain ×2 EX7CQ · Kyrgyzstan NL8F · Alaska VE7RK · Canada ZL1VAH · New Zealand ZL3BWE · New Zealand 8Q7PR · Maldives A61DD · United Arab Emirates DK8HC · Fed. Rep. of Germany EP2AES · Iran KI4NPG · United States

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 CT1DOF

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: IN51 · 22 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 2,546 km (approx.)
Last such locator decoded: 2026-08-30 20:49 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	CT1DOF S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 20:46	80m	-16 / -	2W0YOX	- / -	2	Partial capture
08-30 20:43	80m	- / -	IU1DOF	-12 / -	4	Partial capture
07-27 01:28	40m	-18 / -	EP2AES	- / -19	3	✓ Closing fragment
07-27 01:27	40m	-16 / -	DK8HC	- / -4	2	✓ Closing fragment
07-27 01:24	40m	-14 / -	A61DD	- / -12	4	✓ Closing fragment
07-27 01:22	40m	-16 / -	8Q7PR	- / -12	2	✓ Closing fragment
07-27 01:20	40m	-15 / -	R2AL	+12 / -8	6	✓ Full exchange observed
07-27 01:16	40m	-16 / -1	UA4FKT	-13 / -2	4	✓ Full exchange observed
07-27 01:15	40m	-18 / -	UA9CR	- / -23	2	✓ Closing fragment
07-27 01:13	40m	-16 / -	KI4NPG	- / -13	2	✓ Closing fragment
07-27 01:12	40m	-15 / -	Z62NS	- / -	2	Partial capture
07-13 05:46	20m	-8 / -	9J2FI	- / -5	3	✓ Closing fragment
07-13 05:43	20m	-13 / -	VE7RK	- / -14	2	✓ Closing fragment
07-13 05:42	20m	-14 / -	ZL3BWE	- / -11	2	✓ Closing fragment
07-13 05:34	20m	-24 / -	ZL1VAH	- / -20	2	✓ Closing fragment
07-12 01:29	80m	-7 / -13	LA7DFA	+10 / 0	5	✓ Closing observed
07-12 01:27	80m	- / -	LZ01MIKU	+6 / -	2	✓ Closing fragment
07-12 01:26	80m	-6 / 0	DO7BE	-3 / -14	7	✓ Full exchange observed
07-12 01:25	80m	-6 / -18	PE1NPS	-7 / -10	7	✓ Full exchange observed
07-12 01:24	80m	-6 / -	I1YDT	-8 / -16	4	✓ Closing observed
07-12 01:22	80m	-8 / -11	RC6OD	+4 / -13	5	✓ Full exchange observed
07-12 01:21	80m	-10 / -	EA5HM	- / -6	2	✓ Closing fragment
07-12 01:19	80m	-10 / -	9J2FI	- / -	2	✓ Closing fragment
07-08 03:27	80m	+1 / -2	IZ8VYU	+7 / -3	5	✓ Full exchange observed
07-08 03:21	80m	-5 / -	KR4JNH	- / -18	7	✓ Closing fragment
07-08 03:19	80m	-8 / -	T48FCR	- / -	2	Partial capture
07-08 03:18	80m	-10 / +4	EA5HM	-4 / -	4	✓ Closing observed
07-08 03:15	80m	-7 / -	TI2LCO	- / -14	5	✓ Closing fragment
07-07 03:20	80m	-9 / -	LZ67PP	- / -11	3	Partial capture
07-07 03:20	80m	-10 / -8	<...>	+10 / -	3	Partial capture
07-07 03:17	80m	-6 / +5	G6PWS	-13 / -4	7	✓ Full exchange observed
07-07 03:17	80m	- / -13	YR50NADIA	+2 / -	2	✓ Closing fragment
07-07 03:15	80m	-13 / -2	DL2RTJ	+15 / 0	6	✓ Full exchange observed
07-07 03:14	80m	-7 / -	KO4PRE	- / -7	2	✓ Closing fragment
07-07 03:12	80m	-9 / -	K2K	-19 / -	4	✓ Closing observed
06-28 06:12	10m	- / -5	EX7CQ	-8 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
012830  +0 1904  CT1DOF DO7BE R+00
012845  -7 1975  DO7BE CT1DOF RR73
012900  -1 1903  CT1DOF DO7BE 73
012945  -6 1975  LA7DFA CT1DOF IN51 (x2)
013030  +9 2754  CT1DOF LA7DFA RR73
013045  -8 1975  LA7DFA CT1DOF 73
013100 +12 2754  CT1DOF LA7DFA R-13
204315  -9 2056  CT1DOF IU1DOF JN34 (x4)
204630 -17 1975  2W0YOX CT1DOF IN51 (x2)
204915 -24 1975  EI4JFB CT1DOF IN51

40m

UTC    dB Audio  Message
012115 -15 2007  R2AL CT1DOF -08
012130 +11  957  CT1DOF R2AL R+13
012145 -15 2007  R2AL CT1DOF RR73
012200 +12  958  CT1DOF R2AL 73
012215 -18 2007  8Q7PR CT1DOF -12 (x2)
012430 -14 2007  A61DD CT1DOF IN51 (x4)
012700 -15 2007  DK8HC CT1DOF -04 (x2)
012830 -22 2007  EP2AES CT1DOF IN51 (x3)

20m

UTC    dB Audio  Message
053100 -18 2040  NL8F CT1DOF 73
053415 -24 2040  ZL1VAH CT1DOF R-20 (x2)
053700 -22 2040  VK2ZZY CT1DOF IN51
054200 -17 2040  ZL3BWE CT1DOF -11 (x2)
054300 -13 2040  VE7RK CT1DOF -14 (x2)
054645  -4 2040  9J2FI CT1DOF IN51 (x3)

10m

UTC    dB Audio  Message
061200  -8 1233  CT1DOF EX7CQ -05 (x2)

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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