OH3BY — 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: Finland Most frequent locator attributed to this token: KP20

Receiver-side FT8 activity involving OH3BY, decoded by SO8OO in southeastern Poland. 254 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-21.

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 254 FT8 messages attributed to OH3BY as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (78%), followed by 40 m (22%). Most decodes (52%) fell within the six-hour window 03:00-09:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (74%); the estimated median was -5 dB.

Overview

254

Messages attributed

UTC dates decoded

Active 15-min windows

-5 dB

Estimated median S/N

Bands

40m · 57 20m · 197

First attributed message: 2026-06-06
Last attributed message: 2026-10-21 04:59 UTC

Observed FT8 message patterns

Attributed sample: 254 messages
Active dates: 21 UTC dates
Estimated median S/N: -5 dB
Estimated 10th-90th percentile: -12 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 188.

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 OH3BY in decoded directed-looking exchanges:

RD3FY · European Russia ×2 ON6CQ · Belgium PC2K · Netherlands F4DVP · France F5LQ · France ON8WR · Belgium R3KJF · European Russia RA6ABO · European Russia RC9WC · Asiatic Russia SM7JKW · Sweden SM7WNM · Sweden SV2DXG · 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 OH3BY

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: KP20 · 165 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,192 km (approx.)
Last such locator decoded: 2026-10-21 04:59 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	OH3BY S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 04:59	40m	-12 / -	F5IND	- / -	2	Partial capture
10-15 04:46	40m	-9 / -14	SV2DXG	-14 / -14	6	✓ Full exchange observed
10-15 04:43	40m	-6 / -	EA5D	- / -	3	Partial capture
10-15 04:41	40m	-5 / -12	F5LQ	-2 / -14	7	✓ Full exchange observed
09-28 06:17	40m	-14 / -	G0CPA	- / -	2	Partial capture
09-28 05:02	40m	-9 / -	SM7WNM	-19 / -	2	✓ Closing observed
09-28 05:01	40m	-14 / -	RC9WC	- / -8	2	✓ Closing fragment
09-28 04:58	40m	-15 / -	RD3FY	- / -16	5	✓ Closing fragment
09-28 04:55	40m	-14 / -	ON8WR	- / -12	4	✓ Closing fragment
09-28 04:52	40m	-11 / -	HG0NPJ	- / -	2	Partial capture
09-28 04:50	40m	-8 / -	YO2UKG	- / -11	3	✓ Closing fragment
09-23 03:51	40m	-16 / -	YO5EEE	- / -	2	Partial capture
09-23 03:47	40m	-15 / -	EA5ISA	- / -	2	Partial capture
09-23 03:46	40m	-9 / -	F4CQS	- / -	2	Partial capture
09-13 06:02	40m	- / -15	F4DVP	-7 / -	2	✓ Closing fragment
08-27 13:30	20m	-1 / -	IW2IDB	- / -	3	Partial capture
08-27 13:29	20m	-4 / -	YB1KXV	- / -	2	Partial capture
08-05 13:43	20m	- / -9	ON6CQ	-17 / -	3	✓ Closing fragment
08-05 13:39	20m	- / -	TA3NK	-9 / -	10	Partial capture
08-05 13:21	20m	- / -15	F1PBZ	-8 / -	2	Partial capture
08-05 13:18	20m	- / -3	PC2K	-14 / -	2	✓ Closing fragment
08-05 03:58	40m	- / -8	R3KJF	-15 / -	2	✓ Closing fragment
08-05 03:55	40m	- / -14	SM7JKW	0 / -	2	✓ Closing fragment
08-04 06:28	20m	- / -15	F1PBZ	-8 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
044345  -3 1141  EA5D OH3BY KP20 (x3)
044515  +0 1141  Z61DX OH3BY KP20
044600  -5 1141  SV2DXG OH3BY KP20 (x2)
044645 -14 1052  OH3BY SV2DXG -14
044700 -12 1141  SV2DXG OH3BY R-14
044715 -14 1051  OH3BY SV2DXG RRR
044730 -11 1141  SV2DXG OH3BY 73
044800 -10 1141  UW5KW OH3BY KP20
044845 -13 2211  OH3BY RA6ABO RR73
045215 -11 1814  OH3BY TA2VUZ -06
045900 -12 1141  F5IND OH3BY KP20 (x2)

20m

UTC    dB Audio  Message
134300 -19 1650  OH3BY ON6CQ R-09
134330  -8  457  OH3BY TA3NK KN39
134330 -16 1650  OH3BY ON6CQ R-09
134400 -10  457  OH3BY TA3NK KN39
134400 -15 1650  OH3BY ON6CQ 73
134430 -13  457  OH3BY TA3NK KN39
125315 -11  460  GB4LD OH3BY KP20
125730  -4  459  OH3BY PE1NTD JO22
132930  -3  459  YB1KXV OH3BY KP20 (x2)
133030  -2  459  IW2IDB OH3BY KP20 (x3)
133200  -2  459  EA4HUO OH3BY KP20
133230  -7  459  PD0MNO OH3BY KP20

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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