DD1HRB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN58

Receiver-side FT8 activity involving DD1HRB, decoded by SO8OO in southeastern Poland. 184 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 21 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-09-17.

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 184 FT8 messages attributed to DD1HRB as the transmitting token by decoded message structure across 21 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (79%), followed by 40 m (21%). Several six-hour UTC windows tied for the largest share (54%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

184

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

40m · 39 20m · 145

First attributed message: 2026-06-08
Last attributed message: 2026-09-17 08:22 UTC

Observed FT8 message patterns

Attributed sample: 184 messages
Active dates: 21 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -16 to +1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 80, strong (≥ -8 dB) 82.

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 DD1HRB in decoded directed-looking exchanges:

2E1HAT · England CT1BFP · Portugal DF6JF · Fed. Rep. of Germany F4LOB · France G5MJF · England G8DQP · England G8KHF · England GJ0KYZ · Jersey HA7NB · Hungary IK4LZH · Italy IU8UHK · Italy LZ1BT · Bulgaria

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 DD1HRB

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: JN58 · 85 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 799 km (approx.)
Last such locator decoded: 2026-09-17 08:18 UTC

Other locator fields attributed to this token: JH58 (2).

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	DD1HRB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-17 08:22	40m	- / -	S51PV	-13 / -	2	Partial capture
09-17 08:19	40m	- / +1	PA7ZZ	+1 / -	4	Partial capture
09-17 08:18	40m	- / -5	ON1DGN	-16 / -	2	Partial capture
09-17 08:12	40m	-10 / -5	OK1CI	-2 / -1	5	✓ Full exchange observed
09-14 15:05	40m	+5 / -	OE8PIT	- / -11	3	✓ Closing fragment
09-14 15:01	40m	-1 / -	F6FHZ	- / -10	3	Partial capture
09-12 07:43	40m	-12 / -	PC1K	- / -22	2	Partial capture
09-12 07:41	40m	-16 / -3	PA2KV	-8 / +10	3	✓ Full exchange observed
09-12 07:32	40m	- / -7	DK4FH	+6 / -	4	✓ Closing fragment
09-12 07:10	40m	-4 / -	EB3JT	- / -9	2	✓ Closing fragment
09-09 10:04	40m	- / -10	DL9DAJ	-16 / -	2	✓ Closing fragment
09-09 09:43	40m	-14 / -7	DJ0MAB	-20 / -3	4	Partial capture
09-09 09:41	40m	-11 / -	F1IQH	- / +7	2	✓ Closing fragment
08-16 12:23	20m	-13 / -	OR1A	- / -9	7	Partial capture
08-05 07:33	20m	-20 / -4	RA6OY	+4 / -9	4	Partial capture
08-01 10:25	20m	-15 / -	SM6KKX	-19 / -	3	✓ Closing observed
08-01 10:24	20m	- / -13	ON1JP	-16 / -	4	Partial capture
08-01 09:43	20m	- / -	IK6DLK	+2 / -	2	Partial capture
07-21 15:10	20m	-16 / -	TA1BJ	-17 / +4	3	✓ Closing observed
07-21 06:55	20m	-15 / -	WZ8S	- / -8	2	✓ Closing fragment
07-21 06:41	20m	-19 / -	G8KHF	- / -6	3	✓ Closing fragment
07-16 08:11	20m	- / -4	RU3QR	-22 / -	2	Partial capture
07-16 08:09	20m	-11 / -	SV1CQN	- / -15	2	Partial capture
07-16 08:08	20m	- / -	DL1R	+4 / -	8	Partial capture
07-16 07:43	20m	-6 / +1	IK4LZH	+5 / -	6	✓ Closing observed
07-15 09:12	20m	-6 / -	TI5RR	- / -	2	Partial capture
07-15 09:11	20m	- / -	UB6OCP	-20 / -	4	Partial capture
07-15 09:10	20m	-10 / -	M0DPK	- / -14	2	✓ Closing fragment
07-15 09:06	20m	-8 / -17	UT7UJ	+1 / -4	5	✓ Full exchange observed
07-15 09:05	20m	- / -	M7TUP	-13 / -	2	Partial capture
07-15 08:39	20m	- / -	DL3MIB	-3 / -	6	Partial capture
07-15 08:33	20m	-9 / -	HA7NB	- / -3	3	✓ Closing fragment
07-15 08:29	20m	- / -	DL3MIB	-7 / -	5	Partial capture
07-15 08:29	20m	-8 / -	G8DQP	- / -7	2	✓ Closing fragment
07-15 08:27	20m	-12 / -	CT2HUU	- / -13	2	Partial capture
07-15 08:17	20m	-9 / -	CT2HUU	- / -	2	Partial capture
07-15 08:15	20m	-12 / -	CT1BFP	- / -6	2	✓ Closing fragment
07-15 08:14	20m	-1 / -	G5MJF	- / -1	2	✓ Closing fragment
07-14 06:55	20m	-5 / -	LZ3CB	+3 / -	2	✓ Closing observed
07-14 06:54	20m	- / -	R4FDD	-9 / -	2	Partial capture
07-13 15:23	20m	- / -	EA5D	-9 / -	7	Partial capture
07-13 15:22	20m	-4 / +5	PD0IFI	-6 / -	4	✓ Full exchange observed
07-13 15:06	20m	-2 / -	PE1GIX	- / -25	4	Partial capture
07-13 15:04	20m	-6 / -	2E1HAT	- / +2	4	✓ Closing fragment
07-13 14:36	20m	-9 / -	2E1HAT	- / -	5	Partial capture
07-13 14:34	20m	-14 / -	DF6JF	- / -10	2	✓ Closing fragment
07-11 15:54	40m	-5 / -	M6XZD	- / -	2	Partial capture
07-11 15:50	40m	-14 / -	R3KJF	- / -	2	Partial capture
07-11 15:43	40m	-10 / -	OH3EVO	- / -9	2	✓ Closing fragment
07-08 10:27	20m	-4 / -	3A2MW	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
081315 -10  775  OK1CI DD1HRB -01
081330  +2  775  DD1HRB OK1CI R-05 (x2)
081715  -9  775  CQ DD1HRB JN58 (x2)
081830 -14 1338  DD1HRB ON1DGN -05
081845 -13  774  CQ DD1HRB JN58
081900 -18 1338  DD1HRB ON1DGN -05
081930  +0  525  DD1HRB PA7ZZ +01 (x4)
082215 -13  775  F4HGF DD1HRB -05
082230 -13 2337  DD1HRB S51PV JN76 (x2)

20m

UTC    dB Audio  Message
102630 -21 1076  DD1HRB SM6KKX 73
102630 -14 1818  DD1HRB ON1JP -13
073315 -12 1104  CQ DD1HRB JN58
073330  +2  324  DD1HRB RA6OY KN88
073345 -20 1104  RA6OY DD1HRB -09
073400  +1  324  DD1HRB RA6OY R-04 (x2)
122115 -14 1103  PD1HPB DD1HRB RR73
122300 -14 1078  OR1A DD1HRB JN58 (x7)

10m

UTC    dB Audio  Message
094115 -13  922  DD1HRB A41ZZ -13 (x2)
082600 -11 1882  DD1HRB F4GUK JN18 (x4)

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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