DB7CS — 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: JN39

Receiver-side FT8 activity involving DB7CS, decoded by SO8OO in southeastern Poland. 65 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-09-25.

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 65 FT8 messages attributed to DB7CS as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (43%), followed by 80 m (31%) and 40 m (22%). Several six-hour UTC windows tied for the largest share (52%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -16 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-16 dB

Estimated median S/N

Bands

80m · 20 40m · 14 20m · 28 10m · 3

First attributed message: 2026-06-14
Last attributed message: 2026-09-25 19:46 UTC

Observed FT8 message patterns

Attributed sample: 65 messages
Active dates: 11 UTC dates
Estimated median S/N: -16 dB
Estimated 10th-90th percentile: -23 to -7 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 35, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 8.

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 DB7CS in decoded directed-looking exchanges:

DK7ZT · Fed. Rep. of Germany ×2 DK6WS · Fed. Rep. of Germany EA8DHH · Canary Islands R3DIG · European Russia RY7G · European Russia DG9SEH · Fed. Rep. of Germany OE3FVU · Austria PD3LR · Netherlands S53AK · Slovenia DB2HA · Fed. Rep. of Germany DL6EL · Fed. Rep. of Germany DO3ME · Fed. Rep. of Germany

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 DB7CS

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: JN39 · 32 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,063 km (approx.)
Last such locator decoded: 2026-09-25 19:46 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	DB7CS S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-25 20:42	160m	- / -20	DK7ZT	+8 / -	5	✓ Closing fragment
09-25 20:42	160m	- / -10	DK6WS	+2 / -	4	✓ Closing fragment
09-25 19:45	80m	-20 / -	DO3ME	- / +8	2	✓ Closing fragment
09-25 19:43	80m	-16 / -2	DL6EL	+3 / +3	5	✓ Full exchange observed
09-25 19:42	80m	-21 / -8	PC2J	-9 / -2	5	✓ Full exchange observed
09-25 19:40	80m	-19 / -	F4HUN	- / -14	2	✓ Closing fragment
09-25 19:39	80m	-12 / +3	DB2HA	+7 / +10	4	✓ Full exchange observed
09-25 19:37	80m	-14 / -	G0RVY	- / +9	2	✓ Closing fragment
09-25 19:36	80m	-14 / -	IQ4JO	-6 / -	2	✓ Closing observed
09-25 19:34	80m	-23 / -4	IZ3GNG	+12 / +10	4	✓ Full exchange observed
09-25 16:58	40m	-6 / -	EX7CQ	- / -	2	Partial capture
09-25 11:26	40m	- / +4	OE3FVU	-12 / -	3	✓ Closing fragment
09-25 11:26	40m	- / -12	S53AK	-12 / -	5	✓ Closing fragment
09-25 11:20	40m	-16 / -10	SQ3MQD	-4 / +9	4	Partial capture
09-25 10:12	40m	-13 / -	LX1RFJ	- / -	3	Partial capture
09-25 10:09	40m	- / -16	OM5ALL	-6 / -	2	Partial capture
09-21 16:07	80m	- / +8	DK7ZT	-5 / -	2	✓ Closing fragment
08-20 19:09	20m	+1 / -	<...>	- / -	2	Partial capture
08-14 20:46	80m	- / -15	HA3GO	+12 / -	3	✓ Closing fragment
08-14 20:42	80m	- / -24	OZ6P	+14 / -	2	✓ Closing fragment
08-14 16:45	20m	- / -15	RY7G	+3 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
204200  +3 1095  DB7CS DK6WS -10
204230 +11 1254  DB7CS DK7ZT -20
204230  +1 1095  DB7CS DK6WS -10
204300 +11 1254  DB7CS DK7ZT -20
204300  +2 1095  DB7CS DK6WS -10 (x2)
204400  +6 1253  DB7CS DK7ZT -23 (x3)

80m

UTC    dB Audio  Message
194115 -17 1215  F4HUN DB7CS 73
194200 -20 1215  PC2J DB7CS JN39
194215  -9 1733  DB7CS PC2J -08
194230 -18 1215  PC2J DB7CS R-02
194245  -9 1733  DB7CS PC2J RR73
194300 -24 1215  PC2J DB7CS 73
194315  +5  521  DB7CS DL6EL JN57
194330 -15 1215  DL6EL DB7CS +03
194345  -1  522  DB7CS DL6EL R-02
194400 -18 1215  DL6EL DB7CS RR73
194415  +6  521  DB7CS DL6EL 73
194430 -22 1215  OE2AGZ DB7CS JN39
194500 -23 1215  DO3ME DB7CS +08 (x2)
194630 -18 1215  LA2GCA DB7CS JN39

40m

UTC    dB Audio  Message
112045  -3  892  DB7CS SQ3MQD JO71 (x2)
112130 -16  891  SQ3MQD DB7CS +09
112145  -5  892  DB7CS SQ3MQD R-10
112230 -16  892  DG9SEH DB7CS RR73
112600 -11 1123  DB7CS S53AK JN76
112600 -13 1789  DB7CS OE3FVU JN78
112630 -13 1123  DB7CS S53AK JN76
112630  -9 1789  DB7CS OE3FVU R+04
112700 -12 1123  DB7CS S53AK JN76
112700 -14 1789  DB7CS OE3FVU 73
112730 -12 1124  DB7CS S53AK R-12 (x2)
165845  -6 1478  EX7CQ DB7CS JN39 (x2)

20m

UTC    dB Audio  Message
162900 -24 1681  R3DIG DB7CS 73
164500  +4 2102  DB7CS RY7G LN14 (x3)
214430 -11 2355  DB7CS EA8DHH RR73
190915  +4 1131  <...> DB7CS JN39 (x2)
191145  -9 2136  CQ DB7CS JN39 (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.

CW

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

Explore CW reception at SO8OO

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee