DH4RL — 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: JO52

Receiver-side FT8 activity involving DH4RL, decoded by SO8OO in southeastern Poland. 373 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 24 UTC dates in the available aggregate history. Observed between 2026-06-10 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 373 FT8 messages attributed to DH4RL as the transmitting token by decoded message structure across 24 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (31%), followed by 60 m (24%) and 160 m (24%). Most decodes (83%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

373

Messages attributed

UTC dates decoded

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 88 80m · 115 60m · 89 40m · 46 20m · 27 10m · 8

First attributed message: 2026-06-10
Last attributed message: 2026-10-09 06:32 UTC

Observed FT8 message patterns

Attributed sample: 373 messages
Active dates: 24 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -16 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 38, moderate (-15 to -9 dB) 114, strong (≥ -8 dB) 221.

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 DH4RL in decoded directed-looking exchanges:

9A4ZM · Croatia ×2 RL2F · Kaliningrad ×2 Z62NS · Republic of Kosovo ×2 4O7CC · Montenegro OK1DXR · Czech Republic RI1FJL · Franz Josef Land EA8J · Canary Islands GM5WXA · Scotland M6XZD · England OE7LVI · Austria RI1FJZ · Franz Josef Land Z68PX · Republic of Kosovo

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 DH4RL

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: JO52 · 244 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 803 km (approx.)
Last such locator decoded: 2026-10-09 06:32 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	DH4RL S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-09 06:31	80m	-4 / -	ZL3IO	- / -	2	Partial capture
10-09 06:28	80m	-10 / -	ZL3IO	- / -	3	Partial capture
10-09 06:23	80m	- / -	ON5HE	-7 / -	5	✓ Closing fragment
10-09 06:17	80m	-3 / -	ZL3IO	- / -	12	Partial capture
10-08 21:39	80m	+3 / -4	F6BHK	-5 / +6	3	✓ Full exchange observed
10-03 21:36	80m	- / -	DG0MAN	+5 / -	6	Partial capture
10-03 21:32	80m	-3 / -3	M7CWF	-16 / +6	5	✓ Full exchange observed
10-02 22:48	60m	-5 / -	SP7SQP	- / -	4	Partial capture
10-02 22:44	60m	-2 / +5	F5HNQ	+1 / -	5	✓ Full exchange observed
10-02 22:30	60m	-5 / -	AC2PB	- / -4	2	✓ Closing fragment
10-02 22:29	60m	+1 / -	TF8KW	- / +2	3	✓ Closing fragment
10-02 22:24	60m	-3 / -	EA8BBJ	- / -13	3	✓ Closing fragment
10-02 22:17	60m	-2 / -	LA3JRA	- / -18	3	✓ Closing fragment
10-02 22:15	60m	-3 / -	TA4SSK	- / -14	3	✓ Closing fragment
10-02 22:12	60m	-3 / -	WB2WPM	- / -14	2	✓ Closing fragment
10-02 22:11	60m	-2 / -	PI4TX	-13 / -17	7	Partial capture
10-02 22:10	60m	-6 / -4	EA4DM	-14 / -2	4	✓ Full exchange observed
10-02 22:08	60m	-6 / -4	EA1MX	-14 / +4	6	✓ Full exchange observed
10-02 22:06	60m	-1 / -	T77RN	-3 / -2	5	✓ Full exchange observed
10-02 22:04	60m	-4 / +3	LY8O	+9 / +9	5	✓ Full exchange observed
10-02 22:03	60m	-8 / -	9A4ZM	- / +4	2	✓ Closing fragment
10-02 22:01	60m	-8 / +5	G0AZH	-10 / +10	5	✓ Full exchange observed
10-02 21:59	60m	-3 / -10	ER1CW	-12 / -7	5	✓ Full exchange observed
10-02 21:57	60m	-2 / -	US2YW	-18 / +9	4	✓ Closing observed
10-02 21:56	60m	-6 / -4	IK2EST	-6 / -6	5	✓ Full exchange observed
10-02 21:54	60m	-3 / +4	G0RWF	-14 / +4	5	✓ Full exchange observed
10-02 21:53	60m	-4 / -6	SV3AUW	-16 / -	4	✓ Closing observed
10-02 21:50	60m	-3 / -15	A65D	-20 / -20	5	✓ Full exchange observed
10-02 21:47	60m	-2 / -	9A4ZM	- / +9	4	Partial capture
10-02 21:46	60m	-8 / -	IU5JAE	- / -12	2	Partial capture
10-02 21:44	60m	-5 / -	4L7T	-13 / -11	4	✓ Closing observed
10-02 21:43	60m	+1 / -3	OH1LA	-14 / -3	5	✓ Full exchange observed
10-02 21:41	60m	-6 / -13	DK7UY	-8 / -8	5	✓ Full exchange observed
10-02 21:38	60m	-9 / -	F5MXH	- / +5	2	✓ Closing fragment
10-02 21:38	60m	-6 / +5	F5RRS	-1 / -	8	✓ Full exchange observed
10-02 21:36	60m	-8 / -15	ER5DX	+8 / -4	5	✓ Full exchange observed
10-02 21:34	60m	-10 / -13	VE1YX	-9 / +1	3	✓ Full exchange observed
10-02 21:32	60m	-9 / -	LZ73TRC	- / -	4	Partial capture
09-25 07:58	40m	-18 / -	M6XZD	- / +3	3	✓ Closing fragment
09-25 07:39	40m	-21 / -	VK3DCL	- / -	4	Partial capture
09-23 18:59	40m	-10 / -	OE7LVI	-12 / -1	3	✓ Closing observed
09-23 18:56	40m	-14 / -	RI1FJZ	- / -22	4	✓ Closing fragment
09-19 22:08	80m	-3 / -	VU2MSA	- / -16	9	✓ Closing fragment
09-19 22:01	80m	+8 / -	GM3AND	- / -2	3	✓ Closing fragment
09-19 21:43	160m	-12 / -	RI1FJZ	- / -	4	Partial capture
09-09 08:13	40m	-7 / -6	Z68PX	-11 / -13	4	✓ Full exchange observed
09-08 21:24	80m	-5 / -7	Z62NS	+3 / 0	13	✓ Full exchange observed
09-04 23:24	160m	-10 / -	RI1FJL	- / -12	4	✓ Closing fragment
09-04 23:16	160m	-10 / -	RI1FJL	- / -	12	Partial capture
09-04 23:10	160m	-8 / -	9A4ZM	-2 / -	4	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
062215  -2 1758  ZL3IO DH4RL JO52 (x3)
062330  -2  615  DH4RL ON5HE JO20
062345  -2 1758  ZL3IO DH4RL JO52
062400  -2  615  DH4RL ON5HE JO20 (x4)
062615  -7 1758  F5LMJ DH4RL RR73
062815 -12 1758  ZL3IO DH4RL JO52 (x5)

60m

UTC    dB Audio  Message
222915  -2 1205  TF8KW DH4RL JO52 (x3)
223045  -5 1205  AC2PB DH4RL R-04 (x2)
224415  -2 1206  CQ DH4RL JO52
224430  +2 2445  DH4RL F5HNQ IN98
224445  -6 1206  F5HNQ DH4RL +12
224500  +1 2445  DH4RL F5HNQ R+05
224515  +3 1205  F5HNQ DH4RL RR73
224530  +1 2445  DH4RL F5HNQ 73
224830  -8 1206  SP7SQP DH4RL JO52 (x4)

40m

UTC    dB Audio  Message
185615 -12 1101  RI1FJZ DH4RL JO52 (x4)
185930 -12  645  DH4RL OE7LVI JN57
185945 -12 1101  OE7LVI DH4RL -01 (x2)
073945 -22 1479  VK3DCL DH4RL JO52 (x5)
075815 -18 1300  M6XZD DH4RL JO52 (x3)

160m

UTC    dB Audio  Message
231845 -19 1233  RI1FJL DH4RL JO52 (x11)
214345 -15  583  RI1FJZ DH4RL JO52 (x4)

20m

UTC    dB Audio  Message
132745  +8 2378  <...> DH4RL JO52 (x8)
133730 -12 1129  DH4RL DK5CR JO42 (x2)
072830  -5  729  DH4RL Z62NS +12
072845 -12  912  Z62NS DH4RL +20
072900  -8  729  DH4RL Z62NS R+12
072915  -7  912  Z62NS DH4RL RR73
072930 -10  729  DH4RL Z62NS 73

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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