DK3HV — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JO31

Receiver-side FT8 activity involving DK3HV, decoded by SO8OO in southeastern Poland. 3,602 FT8 messages attributed to this token as transmitter, on 160m, 40m, 20m, 10m, across 23 UTC dates in the available aggregate history. Observed between 2026-06-22 and 2026-08-30.

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 3,602 FT8 messages attributed to DK3HV as the transmitting token by decoded message structure across 23 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (84%), followed by 40 m (7%) and 10 m (7%). Most decodes (63%) fell within the six-hour window 09:00-15:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

3,602

Messages attributed

UTC dates decoded

305

Active 15-min windows

-10 dB

Estimated median S/N

Bands

160m · 75 40m · 266 20m · 3,020 10m · 241

First attributed message: 2026-06-22
Last attributed message: 2026-08-30 06:26 UTC

Observed FT8 message patterns

Attributed sample: 3,602 messages
Active dates: 23 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 759, moderate (-15 to -9 dB) 1,295, strong (≥ -8 dB) 1,548.

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 DK3HV in decoded directed-looking exchanges:

HA0AA · Hungary ×2 IQ4JO · Italy ×2 MM7FTH · Scotland ×2 R70OBN · European Russia ×2 TK5K · Corsica ×2 CT7AUT · Portugal ×2 EA1FUY · Spain ×2 OE6GBG · Austria ×2 PD0MDX · Netherlands ×2 R2FDU · Kaliningrad ×2 SP2OSP · Poland ×2 SP3FNW · Poland ×2

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 DK3HV

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 · 2,250 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,054 km (approx.)
Last such locator decoded: 2026-08-30 06:26 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	DK3HV S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 06:24	40m	-8 / -	EA7KPC	- / -	3	Partial capture
08-30 06:17	40m	-16 / -	LB7XH	- / -	2	✓ Closing fragment
08-30 06:14	40m	-10 / -	KJ5PTH	- / -	5	Partial capture
08-30 06:11	40m	-11 / -9	RW3YS	+8 / -7	5	✓ Full exchange observed
08-30 06:05	40m	-10 / -	HK3G	- / -	5	Partial capture
08-30 06:04	40m	-11 / -	EA5RD	- / -	2	Partial capture
08-30 05:54	40m	-5 / -	IC8XUS	- / -	13	Partial capture
08-30 05:53	40m	- / -	YO6LM	+11 / -	2	Partial capture
08-30 05:52	40m	-2 / 0	SQ6EMJ	-3 / -7	6	✓ Full exchange observed
08-30 05:47	40m	-2 / -	NA3M	- / -9	7	✓ Closing fragment
08-30 05:41	40m	- / -	DK1HZ	+1 / -	11	Partial capture
08-30 05:38	40m	-5 / -	LZ2KX	- / -	16	Partial capture
08-30 05:29	40m	-6 / -	TI5GAX	- / -	12	Partial capture
08-30 04:18	40m	- / -17	R4FBT	-16 / -	3	✓ Closing fragment
08-30 04:01	160m	-16 / -	S53F	-1 / -	3	Partial capture
08-30 03:55	160m	-14 / -	DL8OBF	- / -	6	Partial capture
08-30 03:53	160m	-12 / -	S53F	+2 / -	4	✓ Closing observed
08-30 03:51	160m	-9 / 0	F5RQQ	-12 / -5	7	✓ Full exchange observed
08-30 03:37	160m	0 / -	LX1NO	+2 / -	5	✓ Closing observed
08-30 03:23	160m	0 / -	K1SFA	-13 / -	6	✓ Closing observed
08-30 03:16	160m	+1 / -	PA3BUD	-8 / -11	11	✓ Closing observed
08-30 03:16	160m	-1 / -	LX7I	+6 / -3	4	✓ Full exchange observed
08-30 03:15	160m	+1 / +4	G7RAU	-8 / -3	5	✓ Full exchange observed
08-30 03:05	160m	-2 / -	K1SFA	- / -	14	Partial capture
08-30 02:53	160m	-4 / -	K1SFA	- / -	8	Partial capture
08-30 02:48	160m	+5 / +3	PC1JB	0 / -8	7	✓ Full exchange observed
08-30 02:43	160m	+4 / -	OH3EVO	- / -	8	Partial capture
08-30 02:42	160m	+3 / -	SP1ZMO	- / -	2	Partial capture
08-30 02:37	160m	0 / -	SP1ZMO	- / -	2	Partial capture
08-30 02:34	160m	-4 / +6	YL4U	+7 / -1	5	✓ Full exchange observed
08-28 09:48	40m	-21 / -	DD8IU	- / -	5	Partial capture
08-28 09:32	40m	-13 / +5	PA3FR	-12 / +5	4	✓ Full exchange observed
08-28 06:27	40m	-13 / -	HC1BG	- / -	9	Partial capture
08-28 06:23	40m	-8 / -	HB9HDK	-16 / -	2	✓ Closing observed
08-28 06:21	40m	- / -	DK1HZ	0 / -	9	Partial capture
08-28 06:20	40m	-10 / -	DG3DJ	- / +1	2	Partial capture
08-28 06:17	40m	-9 / -6	DL3AMW	-13 / 0	7	✓ Full exchange observed
08-28 06:11	40m	- / -	DK1HZ	-7 / -	7	Partial capture
08-28 06:11	40m	-11 / -6	9A6ZZ	-10 / -	3	Partial capture
08-28 06:07	40m	- / -	DL4MD	-15 / -	5	✓ Closing fragment
08-28 06:05	40m	-11 / -	I/DH3YAK	-11 / -	2	Partial capture
08-28 06:03	40m	+1 / -	G3ZSU	-2 / -3	5	✓ Full exchange observed
08-28 06:01	40m	-8 / -12	DG9WH	-14 / -2	5	✓ Full exchange observed
08-28 05:58	40m	-4 / -	W1XI	- / -11	5	✓ Closing fragment
08-28 05:46	40m	-4 / -	F1RIQ	- / -9	14	Partial capture
08-28 05:43	40m	-5 / -	KF0WWR	- / -	6	Partial capture
08-28 05:36	40m	-14 / +9	SN40KZE	+12 / -3	3	Partial capture
08-28 05:35	40m	-11 / -	F1RIQ	- / -	3	Partial capture
08-28 05:34	40m	-4 / -	M0TAZ	- / -14	2	✓ Closing fragment
08-28 05:24	40m	-9 / -	WW9WTF	- / -	13	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
061200 -12 2417  RW3YS DK3HV R-07 (x2)
061245 +10 2803  DK3HV RW3YS RR73
061400  -9 2417  KJ5PTH DK3HV JO31 (x5)
061730 -14 2417  LB7XH DK3HV JO31 (x2)
062100  -9 2417  EW3DK DK3HV JO31
062300 -10 2417  F4AHP DK3HV JO31
062400 -10 2418  EA7KPC DK3HV JO31 (x3)

160m

UTC    dB Audio  Message
035315 -15 1732  DK3HV F5RQQ RR73
035330 -12 2373  S53F DK3HV JO31
035345  +2 1520  DK3HV S53F R JN75
035345 -11 1732  DK3HV F5RQQ RR73
035400 -12 2374  S53F DK3HV RR73
035415  +3 1520  DK3HV S53F 73
035545 -15 2374  DL8OBF DK3HV JO31 (x6)
040100 -12 2374  S53F DK3HV JO31 (x2)
040145  -1 1519  DK3HV S53F R JN75

10m

UTC    dB Audio  Message
151415 -17  885  DK3HV 5Z4VJ KI88
155415 -14  844  DK3HV EA3JEZ RR73
174245 -24 1734  DK3HV EB5HRZ IM99
184630 -21 1294  CQ DK3HV JO31 (x2)
185130 -18 1879  SQ4FAE/P DK3HV JO31 (x2)
185500 -22 1879  CQ DK3HV JO31 (x3)
190230 -10  948  PY7MS DK3HV JO31 (x2)
190700 -20 1671  CQ DK3HV JO31 (x3)

20m

UTC    dB Audio  Message
104045 -21 2006  KB3DQI DK3HV JO31 (x3)
104430 -22 2006  KE2FUM DK3HV JO31 (x6)
104800 -24 1570  DK3HV 2E0NBL RRR
104830 -23 2006  KE2FUM DK3HV R-15
104830 -22 1570  DK3HV 2E0NBL RRR (x2)
104930 -22 2006  KE2FUM DK3HV JO31
104930 -24 1569  DK3HV 2E0NBL RRR

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.

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