OH7DAP — 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: KP33

Receiver-side FT8 activity involving OH7DAP, decoded by SO8OO in southeastern Poland. 28 FT8 messages attributed to this token as transmitter, on 160m, 80m, 40m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-25 and 2026-10-30.

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 28 FT8 messages attributed to OH7DAP as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (46%), followed by 80 m (32%) and 160 m (21%). Several six-hour UTC windows tied for the largest share (64%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (82%); the estimated median was +1 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+1 dB

Estimated median S/N

Bands

160m · 6 80m · 9 40m · 13

First attributed message: 2026-08-25
Last attributed message: 2026-10-30 22:53 UTC

Observed FT8 message patterns

Attributed sample: 28 messages
Active dates: 6 UTC dates
Estimated median S/N: +1 dB
Estimated 10th-90th percentile: -17 to +13 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 23.

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 OH7DAP in decoded directed-looking exchanges:

EX7CQ · Kyrgyzstan BA6IM · China EX8BT · Kyrgyzstan JH1FVE · Japan ZL3TX · New Zealand RI1FJL · Franz Josef Land

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 OH7DAP

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: KP33 · 11 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,540 km (approx.)
Last such locator decoded: 2026-10-30 22:53 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	OH7DAP S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-30 22:48	160m	-21 / -	6W/IK2HKT	- / -	2	Partial capture
10-10 14:56	160m	-14 / -	UD8S	- / -	2	Partial capture
09-05 08:07	10m	- / -	EX7CQ	-13 / -	2	✓ Closing fragment
08-30 18:15	40m	+10 / -	BD4VOJ	- / -14	3	Partial capture
08-30 18:13	40m	+6 / -	JH1FVE	- / -8	2	✓ Closing fragment
08-30 18:10	40m	+11 / -	EX8BT	- / -17	4	✓ Closing fragment
08-30 18:08	40m	+13 / -	ZL3TX	- / -24	3	✓ Closing fragment
08-26 00:05	80m	+2 / -	DK8HC	+5 / +1	7	Partial capture
08-26 00:01	80m	-3 / -	RI1FJL	- / +2	6	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
224615  -5 1243  RI1FJL OH7DAP R+01
145630 -17 2133  UD8S OH7DAP KP33 (x2)
224815 -22 1896  6W/IK2HKT OH7DAP KP33 (x3)

10m

UTC    dB Audio  Message
080700 -17 1772  OH7DAP EX7CQ +12 (x2)

40m

UTC    dB Audio  Message
180215 +16 2881  BA6IM OH7DAP RR73
180845 +13 2989  ZL3TX OH7DAP KP33 (x3)
181045 +12 2989  EX8BT OH7DAP R-17 (x4)
181315  +6 2989  JH1FVE OH7DAP R-08 (x2)
181515  +9 2989  BD4VOJ OH7DAP -14 (x3)

80m

UTC    dB Audio  Message
222915  -6 2293  RI1FJL OH7DAP KP33 (x7)
000500  +3  565  OH7DAP DK8HC JO42 (x4)
000645  +0 3009  DK8HC OH7DAP +01
000700  +5  565  OH7DAP DK8HC JO42
000715  +3 3009  DK8HC OH7DAP +01

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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