OH4CVI — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP31

Receiver-side FT8 activity involving OH4CVI, decoded by SO8OO in southeastern Poland. 7 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-15 and 2026-09-20.

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 7 FT8 messages attributed to OH4CVI as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (86%), followed by 80 m (14%). In this small sample, the estimated median decoder S/N was -16 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 1 40m · 6

First attributed message: 2026-09-15
Last attributed message: 2026-09-20 16:04 UTC

Observed FT8 message patterns

Attributed sample: 7 messages
Active dates: 3 UTC dates
Estimated median S/N: -16 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 3, 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. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with OH4CVI in decoded directed-looking exchanges:

DL9BDR · Fed. Rep. of Germany R3OR · European Russia R3XBS · European Russia R7MP · European Russia SQ9SET · Poland

Most frequent locator attributed to OH4CVI

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: KP31 · 3 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,325 km (approx.)
Last such locator decoded: 2026-09-20 16:04 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	OH4CVI S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-18 19:24	40m	- / -	F8MRQ	-4 / -	3	Partial capture
09-18 19:23	40m	-15 / -	SQ9SET	- / +9	3	✓ Closing fragment
09-18 19:17	40m	- / -2	DL9BDR	-3 / -	3	✓ Closing fragment
09-15 17:13	40m	- / -	DK8HC	-6 / -	3	Partial capture
09-15 17:13	40m	- / -	OH6FSG	-10 / -	2	Partial capture
09-15 16:20	40m	- / -	R7MP	-2 / -	2	✓ Closing fragment
09-15 16:19	40m	- / -	F4NGK	-17 / -	2	Partial capture
09-15 16:09	40m	-18 / -24	DL3IAK	-10 / -17	6	Partial capture
09-10 17:30	40m	- / -7	DK7ZT	-5 / -	3	Partial capture
09-10 17:30	40m	- / -7	R3OR	+15 / -	4	✓ Closing fragment
09-10 17:30	40m	- / -	US3EW	+3 / -	3	Partial capture
09-10 17:30	40m	- / -12	YO4NF	-10 / -	2	Partial capture
09-10 17:29	40m	- / -16	R3XBS	+9 / -	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
160400 -19 1564  CQ OH4CVI KP31

40m

UTC    dB Audio  Message
171300  -9 2552  OH4CVI OH6FSG KP23
171300  -6  598  OH4CVI DK8HC JO42 (x2)
171400 -12 2552  OH4CVI OH6FSG KP23
171400  -6  598  OH4CVI DK8HC JO42
171645 -16 2144  UN7PPV OH4CVI R-06
191730  -1  404  OH4CVI DL9BDR JO53 (x3)
192315 -14  874  SQ9SET OH4CVI KP31 (x3)
192430  -8  874  OH4CVI F8MRQ JN17 (x3)

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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