OT1C — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO20

Receiver-side FT8 activity involving OT1C, decoded by SO8OO in southeastern Poland. 42 FT8 messages attributed to this token as transmitter, on 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-07-21 and 2026-11-06.

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 42 FT8 messages attributed to OT1C as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (43%), followed by 20 m (38%) and 10 m (19%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (67%); the estimated median was -1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-1 dB

Estimated median S/N

Bands

40m · 18 20m · 16 10m · 8

First attributed message: 2026-07-21
Last attributed message: 2026-11-06 18:44 UTC

Observed FT8 message patterns

Attributed sample: 42 messages
Active dates: 11 UTC dates
Estimated median S/N: -1 dB
Estimated 10th-90th percentile: -21 to +7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 9, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 28.

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 OT1C in decoded directed-looking exchanges:

CA6SNT · Chile LZ2VQ · Bulgaria BG7BMG · China YB7SKM · Indonesia PA7D · Netherlands R6DVV · European Russia RK4UZ · European Russia SV1DKR · Greece

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 OT1C

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: JO20 · 24 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,194 km (approx.)
Last such locator decoded: 2026-11-06 18:39 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	OT1C S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-06 18:38	40m	-12 / -	S79VU	- / -	2	Partial capture
11-02 18:25	40m	-1 / -8	SV1DKR	-10 / -	4	✓ Closing observed
10-25 15:16	40m	+2 / -	F4MXT/P	- / -	2	Partial capture
10-22 15:56	40m	+3 / -	RK4UZ	-1 / +7	3	✓ Closing observed
10-22 15:55	40m	+6 / -	R6DVV	- / +1	2	✓ Closing fragment
10-22 15:54	40m	+7 / -	PA7D	-8 / -	4	✓ Closing observed
08-22 16:34	20m	+6 / -	YC1JJS	- / -	5	Partial capture
08-22 16:29	20m	0 / -	OK4SD	-6 / -1	4	Partial capture
08-22 16:27	20m	+5 / -	BG8HNC	- / -	3	Partial capture
08-16 16:43	10m	- / -5	LZ2VQ	-12 / -	5	✓ Closing fragment
08-16 16:36	10m	-20 / -	PU2LHZ	- / -8	2	Partial capture
08-16 16:34	10m	-20 / -	CA6SNT	- / -12	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
155645  +1 1736  RK4UZ OT1C RR73
151630  +1  482  F4MXT/P OT1C JO20 (x2)
182345  +0 2097  CQ OT1C JO20 (x4)
182530  -6 1282  OT1C SV1DKR KM18 (x2)
182615  -1 2097  SV1DKR OT1C RR73
182630 -14 1281  OT1C SV1DKR 73
182845  -5 2097  5R8IC OT1C JO20
183815  -2 1664  S79VU OT1C JO20 (x2)
184415  -8 1676  SM0EJR OT1C +14

20m

UTC    dB Audio  Message
155845 -11 2213  BA3NZ OT1C JO20
162700  +4 2016  BG8HNC OT1C JO20 (x3)
162945  -6  899  OT1C OK4SD JN79
163030  +7 2608  OK4SD OT1C -01 (x3)
163400  +6 2608  YC1JJS OT1C JO20 (x5)
161700 -18 1620  OT1C YB7SKM RR73
162030 -17 2274  OT1C BG7BMG RR73

10m

UTC    dB Audio  Message
163415 -21 2020  CA6SNT OT1C R-12 (x2)
163600 -18 1967  PU2LHZ OT1C JO20 (x2)
163830 -24 1967  LW4ERH OT1C JO20
164315 -11 1967  OT1C LZ2VQ KN23 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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