DF4BR — 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: JO43

Receiver-side FT8 activity involving DF4BR, decoded by SO8OO in southeastern Poland. 124 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-07-06 and 2026-10-22.

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 124 FT8 messages attributed to DF4BR as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (46%), followed by 40 m (35%) and 60 m (19%). Most decodes (71%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (64%); the estimated median was -6 dB.

Overview

124

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 1 60m · 23 40m · 43 20m · 57

First attributed message: 2026-07-06
Last attributed message: 2026-10-22 17:17 UTC

Observed FT8 message patterns

Attributed sample: 124 messages
Active dates: 18 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 33, strong (≥ -8 dB) 79.

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 DF4BR in decoded directed-looking exchanges:

TK4QP · Corsica US3EW · Ukraine DJ2MS · Fed. Rep. of Germany DK8HC · Fed. Rep. of Germany EX7CQ · Kyrgyzstan F1PBZ · France G8KHF · England HF5A · Poland IZ5ILH · Italy LA6RJA · Norway R2ZDO · European Russia SP2L · Poland

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 DF4BR

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: JO43 · 56 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 964 km (approx.)
Last such locator decoded: 2026-10-22 17:09 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	DF4BR S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-22 17:16	60m	-4 / -	OE5DML	- / -13	2	✓ Closing fragment
10-22 17:16	60m	- / -	DK7ZT	-6 / -	2	Partial capture
10-22 17:14	60m	-4 / -5	LZ1SAD	-2 / -6	6	✓ Full exchange observed
10-22 17:09	60m	-1 / -	G0LLY	- / -18	2	Partial capture
10-22 17:08	60m	+3 / -13	IW2CAK	-5 / -12	5	✓ Full exchange observed
10-22 17:06	60m	-4 / -	DK4RH	- / -	3	Partial capture
10-22 17:06	60m	-4 / +2	ON7GB	+4 / -3	11	✓ Full exchange observed
10-22 17:04	60m	- / -	DL9KM	-14 / -	5	Partial capture
10-22 16:59	60m	-3 / -8	DL5DQZ	+7 / -	16	✓ Closing observed
10-22 16:59	60m	-1 / -2	G0AZH	-6 / -9	10	✓ Full exchange observed
10-22 16:57	60m	- / -	DK6XY	-4 / -	4	Partial capture
10-22 16:54	60m	-3 / 0	SP8WB	-12 / -2	4	✓ Full exchange observed
10-20 17:31	40m	0 / -	EX7CQ	+2 / -6	3	✓ Closing observed
10-19 15:21	10m	- / -1	C91RU	-7 / -	2	Partial capture
10-13 18:27	40m	- / -11	F4FSY	-8 / -	2	Partial capture
10-13 18:25	40m	-8 / +3	G8KHF	-12 / +1	4	✓ Full exchange observed
10-13 18:22	40m	-8 / -	EA3JAQ	- / -	3	Partial capture
10-04 18:33	40m	-2 / -	IZ5ILH	- / -14	3	✓ Closing fragment
10-04 18:30	40m	-7 / -	MX0SQC	- / -	3	Partial capture
10-01 15:59	40m	- / -	DK7ZT	-6 / -	4	Partial capture
10-01 15:58	40m	-1 / -	LA6RJA	- / -4	3	✓ Closing fragment
10-01 15:55	40m	-10 / -	IN3IZQ	- / -	4	Partial capture
10-01 15:54	40m	- / -	DL8TV	-1 / -	4	Partial capture
10-01 15:53	40m	-9 / -6	DJ2MS	-8 / -3	5	✓ Full exchange observed
10-01 15:50	40m	- / -	DK7ZT	-1 / -	3	Partial capture
10-01 15:49	40m	-2 / -	M9ORB	- / -6	2	Partial capture
08-31 12:46	20m	-2 / -	BA3NZ	- / -19	9	Partial capture
08-31 12:44	20m	-2 / -7	TK4QP	-2 / -9	4	✓ Full exchange observed
08-31 12:41	20m	+4 / -	<...>	- / -13	2	Partial capture
08-27 17:26	40m	-7 / -10	F1PBZ	-4 / -8	3	✓ Full exchange observed
08-21 12:00	20m	-6 / -	KA2MGE	- / -	4	Partial capture
08-19 22:44	40m	-3 / -	EA8UP	- / -4	3	Partial capture
08-19 22:35	40m	-2 / -18	VP2MAA	-10 / -12	10	✓ Full exchange observed
07-27 17:39	40m	-18 / +2	DK8HC	-7 / 0	3	✓ Full exchange observed
07-27 17:38	40m	- / +2	SP2L	-5 / -	3	✓ Closing fragment
07-27 17:37	40m	-14 / -	R2ZDO	- / -14	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
171030  -4  553  G0LLY DF4BR R-18
171045  +6  628  DF4BR ON7GB R+02
171100  +1  553  ON7GB DF4BR RR73
171115 +10  628  DF4BR ON7GB 73
171415  -5  710  LZ1SAD DF4BR -06
171430 -15 1904  DF4BR DM3RCK JO62
171445  -7  710  LZ1SAD DF4BR -06 (x2)
171530  -4  710  DF4BR LZ1SAD R-05
171545  -3  710  LZ1SAD DF4BR RR73
171600  +1  710  DF4BR LZ1SAD 73
171600  -6 2483  DF4BR DK7ZT +22 (x2)
171645  -2  710  OE5DML DF4BR -13 (x2)

40m

UTC    dB Audio  Message
183415  -4  664  IZ5ILH DF4BR R-14 (x2)
182200 -11  928  EA3JAQ DF4BR JO43 (x3)
182515  -8 1067  G8KHF DF4BR JO43
182530 -12 1066  DF4BR G8KHF +03
182545  -9 1067  G8KHF DF4BR R+01
182600 -12 1066  DF4BR G8KHF RR73
182700  -7 1714  DF4BR F4FSY -11 (x2)
172830  +2  496  DF4BR EX7CQ -12
173115  +2  496  EX7CQ DF4BR R-06
173130  +2  496  DF4BR EX7CQ RR73
173145  -3  496  EX7CQ DF4BR 73

10m

UTC    dB Audio  Message
152130  -5  390  DF4BR C91RU -01 (x2)

80m

UTC    dB Audio  Message
151345 -17 1160  RA2FU DF4BR JO43

20m

UTC    dB Audio  Message
124215  +5  730  <...> DF4BR R-13
124415  +0 1059  DF4BR TK4QP -07
124430  +2 1059  TK4QP DF4BR R-09
124445  -5 1059  DF4BR TK4QP RR73
124500  -6 1059  TK4QP DF4BR 73
124530  +9  473  YT7DX DF4BR JO43
124615  -6 1085  BA3NZ DF4BR JO43 (x9)

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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