DA1VA — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JN58

Receiver-side FT8 activity involving DA1VA, decoded by SO8OO in southeastern Poland. 25 FT8 messages attributed to this token as transmitter, on 40m, across 1 UTC dates in the available aggregate history. Last observed 2026-09-19.

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 25 FT8 messages attributed to DA1VA as the transmitting token by decoded message structure across 1 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (100%). In this small sample, the estimated median decoder S/N was -6 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

40m · 25

First attributed message: 2026-09-19
Last attributed message: 2026-09-19 10:07 UTC

Observed FT8 message patterns

Attributed sample: 25 messages
Active dates: 1 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -8 to -4 dB
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 24.

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 DA1VA in decoded directed-looking exchanges:

G7EVY · England 9A4ZM · Croatia DH4YM · Fed. Rep. of Germany DJ0MAB · Fed. Rep. of Germany DK4RH · Fed. Rep. of Germany DK7ZT · Fed. Rep. of Germany DL1HQN · Fed. Rep. of Germany DL6UM · Fed. Rep. of Germany OS4K · Belgium OZ5AGJ · Denmark PA0ARR · Netherlands PD4HT · Netherlands

Most frequent locator attributed to DA1VA

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: JN58 · 5 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 799 km (approx.)
Last such locator decoded: 2026-09-19 10:03 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	DA1VA S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 10:06	40m	-6 / -6	DL1HQN	-9 / 0	5	✓ Full exchange observed
09-19 10:04	40m	-7 / +7	DL6UM	-8 / -7	6	✓ Full exchange observed
09-19 10:03	40m	-6 / -	DK4RH	-13 / 0	4	✓ Closing observed
09-19 10:02	40m	-5 / -	PA0ARR	- / -17	2	✓ Closing fragment
09-19 09:55	40m	-4 / -	OZ5AGJ	- / -17	2	✓ Closing fragment
09-19 09:53	40m	-8 / -	DJ0MAB	-12 / -18	2	✓ Closing observed
09-19 09:52	40m	-8 / -	OS4K	- / -12	2	✓ Closing fragment
09-19 09:49	40m	-6 / -	DH4YM	- / -1	2	✓ Closing fragment
09-19 09:46	40m	-6 / +3	9A4ZM	0 / +4	6	✓ Full exchange observed
09-19 09:46	40m	- / -	DK7ZT	-19 / -	2	✓ Closing fragment
09-19 09:43	40m	- / -	UT4PA	+13 / -	2	Partial capture
09-19 09:42	40m	-4 / -3	PD4HT	-12 / -4	3	✓ Full exchange observed
08-30 12:07	20m	- / -9	G7EVY	+4 / -	8	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
100345 -13 2635  DA1VA DK4RH JO31
100400  -7 2635  DK4RH DA1VA +00
100415  -6  990  DA1VA DL6UM JO60
100430  -4 2635  DK4RH DA1VA RR73
100445 -10  990  DA1VA DL6UM JO60
100445 -13 2635  DA1VA DK4RH 73
100500  -7 2636  DL6UM DA1VA -07
100515 -10  989  DA1VA DL6UM R+07
100530  -7 2635  DL6UM DA1VA RR73
100545  -5  990  DA1VA DL6UM 73
100615 -11 2635  DA1VA DL1HQN JO61
100630  -5 2636  DL1HQN DA1VA +00
100645  -7 2636  DA1VA DL1HQN R-06
100700  -7 2635  DL1HQN DA1VA RR73
100715  -8 2635  DA1VA DL1HQN 73

20m

UTC    dB Audio  Message
120730  +1 2909  DA1VA G7EVY IO83 (x8)

CW

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

Explore CW reception at SO8OO

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