DK3RV — 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: JO31

Receiver-side FT8 activity involving DK3RV, decoded by SO8OO in southeastern Poland. 457 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 40 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-09.

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 457 FT8 messages attributed to DK3RV as the transmitting token by decoded message structure across 40 UTC dates in the available aggregate history. The largest monitored-band total was 60 m (58%), followed by 40 m (23%) and 20 m (11%). Several six-hour UTC windows tied for the largest share (91%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9 dB.

Overview

457

Messages attributed

UTC dates decoded

Active 15-min windows

-9 dB

Estimated median S/N

Bands

80m · 34 60m · 264 40m · 105 20m · 51 10m · 3

First attributed message: 2026-06-06
Last attributed message: 2026-10-09 20:40 UTC

Observed FT8 message patterns

Attributed sample: 457 messages
Active dates: 40 UTC dates
Estimated median S/N: -9 dB
Estimated 10th-90th percentile: -17 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 57, moderate (-15 to -9 dB) 184, strong (≥ -8 dB) 216.

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 DK3RV in decoded directed-looking exchanges:

BI4JJO · China ×2 IU1HGN · Italy ×2 TA2EE · Asiatic Turkey ×2 TA7MMI · Asiatic Turkey ×2 F4HSB · France ×2 OH5YZ · Finland ×2 SM4ONW · Sweden ×2 CE2SV · Chile 9A3TGY · Croatia EX7DY · Kyrgyzstan HG0NPJ · Hungary LA5ITA · Norway

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 DK3RV

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: JO31 · 86 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-10-09 19:34 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	DK3RV S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-09 20:40	60m	-4 / -8	T77RN	-1 / -12	3	✓ Full exchange observed
10-09 19:33	60m	-8 / -	DF3YG	-11 / -2	3	✓ Closing observed
10-09 19:31	60m	-11 / +6	DG2EBG	-18 / -4	5	✓ Full exchange observed
10-09 19:29	60m	-6 / -8	G0JEI	-3 / +3	5	✓ Full exchange observed
10-09 19:28	60m	-2 / -	TA3GO	- / -2	2	Partial capture
10-09 19:26	60m	0 / -	OZ1BM	-2 / +6	3	✓ Closing observed
10-09 19:25	60m	-3 / -	TA3GO	- / -13	2	Partial capture
10-09 18:43	60m	-6 / -3	SM7VGQ	-16 / -	2	✓ Closing observed
10-09 18:41	60m	-8 / -	EA3CU	-11 / -8	3	✓ Closing observed
10-09 18:39	60m	-4 / -10	OH5YZ	-17 / -22	4	✓ Full exchange observed
10-09 18:38	60m	-4 / -	DD1OP	-15 / 0	3	✓ Closing observed
10-09 18:35	60m	-2 / +8	G5BOB	-6 / +5	4	✓ Full exchange observed
10-09 18:34	60m	-6 / -	SM7VGQ	- / -10	3	Partial capture
10-09 18:31	60m	-6 / -	IU3UQW	- / -20	3	✓ Closing fragment
10-09 18:29	60m	+7 / +2	EA6ZS	-5 / -9	4	✓ Full exchange observed
10-09 18:26	60m	-7 / -	SP1RKT	- / -9	3	✓ Closing fragment
10-09 17:24	60m	-12 / 0	ON8LX	-12 / 0	5	✓ Full exchange observed
10-09 17:19	60m	-11 / +2	DL9FCY	-2 / -	4	✓ Full exchange observed
10-09 17:16	60m	-10 / +3	DA1VID	-9 / +3	5	✓ Full exchange observed
10-09 17:12	60m	-14 / +6	DL8UBR	+2 / +6	4	✓ Full exchange observed
10-09 17:07	60m	-4 / -	MM0NDX	- / +1	2	Partial capture
10-09 17:05	60m	-10 / -	F4HSB	- / -5	2	✓ Closing fragment
10-09 17:02	60m	-8 / -5	SP8NR	+4 / +1	6	✓ Full exchange observed
10-09 16:59	60m	-8 / -	IU1HGN	-19 / -21	3	✓ Closing observed
10-09 16:58	60m	-8 / -	SM4ONW	-5 / -1	3	✓ Closing observed
10-09 16:50	60m	-6 / -11	4O/DL1FDH	-2 / -3	4	Partial capture
10-07 19:21	60m	-11 / -5	DJ1TU	+2 / -	3	✓ Closing observed
10-07 19:18	60m	- / -17	DL8FBD	0 / -	3	✓ Closing fragment
10-07 19:16	60m	- / +4	OK1BN	-4 / -	4	✓ Closing fragment
10-07 19:10	60m	-12 / -	ON6CQ	- / -16	2	✓ Closing fragment
10-07 19:08	60m	-11 / +2	DJ2FR	-18 / -7	4	✓ Full exchange observed
10-07 19:05	60m	-13 / -	M0XXJ	-20 / -11	4	✓ Closing observed
10-07 19:03	60m	-13 / +5	SM4ONW	-14 / -9	4	✓ Full exchange observed
10-07 18:02	40m	-9 / -15	DA125RH	+17 / -13	8	Partial capture
10-07 17:54	60m	-8 / +7	F5MKD	+8 / -	4	✓ Closing observed
10-07 17:51	60m	-4 / +1	DB6LL/P	-2 / -	3	✓ Full exchange observed
10-07 17:51	60m	-15 / -3	YT2ZE	-3 / -11	2	Partial capture
10-07 17:48	60m	-2 / -	LB5WB	- / +3	2	Partial capture
10-07 17:46	60m	-2 / -	G7RTI	- / -3	2	✓ Closing fragment
10-07 17:44	60m	-4 / -7	F4LJG	-8 / -18	6	✓ Full exchange observed
10-07 17:43	60m	-4 / -13	IW2CAK	-5 / -7	5	✓ Full exchange observed
10-07 17:32	60m	- / +8	SP3HCA	+12 / -	2	Partial capture
10-07 17:29	60m	-2 / +1	F5PBG	+1 / 0	2	Partial capture
10-07 17:28	60m	-3 / -2	TM47CDXC	+5 / -2	3	Partial capture
10-07 17:27	60m	-12 / +2	OE100OEVSV	-9 / -8	2	Partial capture
10-07 17:25	60m	-2 / +3	OZ5AGJ	-16 / -1	4	✓ Full exchange observed
10-03 19:02	40m	-7 / -	EU6UE	- / -	2	Partial capture
10-03 18:59	40m	+7 / -6	ES4TRI	-10 / +5	4	✓ Full exchange observed
10-03 18:56	40m	-2 / -	LA5ZUA	- / -1	2	✓ Closing fragment
10-02 19:28	60m	-10 / -	DL4YDR	-10 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

60m

UTC    dB Audio  Message
193045  -5  725  DK3RV G0JEI RR73
193100  -8 1014  G0JEI DK3RV 73
193130  -6 1014  CQ WWFF DK3RV JO31
193145 -13 1014  DK3RV DG2EBG JO31
193200 -11 1154  DG2EBG DK3RV -04
193215 -17 1014  DK3RV DG2EBG R+06
193230 -11 1154  DG2EBG DK3RV RR73
193245 -23 1014  DK3RV DG2EBG 73
193300  -9 1154  DF3YG DK3RV -02 (x2)
193345 -11 1538  DK3RV DF3YG 73
193430 -10 1154  CQ WWFF DK3RV JO31
204015  -4 2675  T77RN DK3RV -12
204200  -2 2676  DK3RV T77RN R-08 (x2)

40m

UTC    dB Audio  Message
190045 -10 2491  DK3RV ES4TRI 73
190200  -7 2207  IU8TSR DK3RV -08
190230  -5 2140  EU6UE DK3RV JO31 (x2)
190400  +5  343  SP9DPM/P DK3RV -11
190530  +3 2844  EA4GTY DK3RV RR73
174945  -6 1302  EX7CQ DK3RV JO31
180200 -11 2390  DA125RH DK3RV -13 (x4)
180445 +18 2391  DK3RV DA125RH R-15 (x4)

80m

UTC    dB Audio  Message
182945  +4 2134  DK3RV 9A5E R-04
183130 -24  505  DO5PY DK3RV -13
183145  -7  709  DK3RV SP9DWT JN99 (x5)
183500  -3 1241  LZ2KV DK3RV -04
183515 +11 1242  DK3RV LZ2KV R-13
183530 -10 1241  LZ2KV DK3RV RR73
183545  +9 1242  DK3RV LZ2KV 73
183600  -7  828  DO2PY DK3RV JO31 (x3)
193315  -1 2354  UN0GY DK3RV -11

20m

UTC    dB Audio  Message
174800  -4 1044  DK3RV LA5ITA 73
174815  +8  364  LA5ITA DK3RV RR73
174845  +4  364  BI4JJO DK3RV -17 (x3)
175000 +12  364  DK3RV UA4FEN -04
175015  +1  364  BI4JJO DK3RV RR73 (x2)
175245  +1 2315  LB8X DK3RV +01 (x5)
175830  +5  484  XW4KV DK3RV -05 (x2)

10m

UTC    dB Audio  Message
190945 -10 2594  DK3RV CE2SV R-13 (x2)

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