DA1HM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN67

Receiver-side FT8 activity involving DA1HM, decoded by SO8OO in southeastern Poland. 75 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 3 UTC dates in the available aggregate history. Observed between 2026-07-20 and 2026-08-11.

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 75 FT8 messages attributed to DA1HM as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (71%), followed by 80 m (29%). Most decodes (100%) fell within the six-hour window 16:00-22:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (92%); the estimated median was 0 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

0 dB

Estimated median S/N

Bands

80m · 22 20m · 53

First attributed message: 2026-07-20
Last attributed message: 2026-08-11 17:50 UTC

Observed FT8 message patterns

Attributed sample: 75 messages
Active dates: 3 UTC dates
Estimated median S/N: 0 dB
Estimated 10th-90th percentile: -8 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 0, moderate (-15 to -9 dB) 6, strong (≥ -8 dB) 69.

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 DA1HM in decoded directed-looking exchanges:

DJ2MS · Fed. Rep. of Germany EA4GG · Spain JO1LVZ · Japan ON6OM · Belgium R3YAU · European Russia SQ5PTZ · Poland HA7TM · Hungary CT7AUT · Portugal DA6WA · Fed. Rep. of Germany DL3BH · Fed. Rep. of Germany IW9FRA · Sicily SN1A · Poland

Most frequent locator attributed to DA1HM

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: JN67 · 41 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 699 km (approx.)
Last such locator decoded: 2026-08-11 17:50 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	DA1HM S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-11 17:48	20m	+8 / -	RZ4FWA	- / -	5	Partial capture
08-11 17:29	20m	+8 / -	C91RU	- / -	5	Partial capture
08-11 17:23	20m	+3 / -	<...>	- / -	9	Partial capture
08-11 17:21	20m	-2 / -9	R3YAU	-9 / -	4	✓ Closing observed
08-11 16:48	20m	-5 / -	EA4GG	- / -15	3	✓ Closing fragment
08-11 16:46	20m	-2 / -	HA1BF	- / -	4	Partial capture
08-11 16:44	20m	-3 / -	ON6OM	- / -13	3	✓ Closing fragment
08-11 16:41	20m	+2 / -	EA1FCS	- / -	2	Partial capture
08-11 16:38	20m	-4 / -	BD4UJ	- / -	4	Partial capture
08-11 16:29	20m	+7 / -	JO1LVZ	- / -19	7	✓ Closing fragment
08-11 16:26	20m	-4 / -	SQ5PTZ	- / +7	3	✓ Closing fragment
07-29 20:04	40m	- / -	DL7DL	-3 / -	2	Partial capture
07-29 20:02	40m	- / -9	HA7TM	-4 / -	3	✓ Closing fragment
07-27 19:27	20m	-7 / -	JH5AVM	- / -8	3	Partial capture
07-27 19:17	20m	- / -4	DJ2MS	-16 / -	3	✓ Closing fragment
07-20 21:16	80m	-3 / -3	IW9FRA	-13 / -6	8	✓ Full exchange observed
07-20 21:15	80m	-6 / -	DL3BH	-24 / -3	3	✓ Closing observed
07-20 21:13	80m	-6 / -	CT7AUT	- / -16	4	✓ Closing fragment
07-20 21:12	80m	-4 / +1	SN1A	+8 / +10	4	✓ Full exchange observed
07-20 21:11	80m	+4 / -8	SP9LS	+10 / -1	4	✓ Full exchange observed
07-20 21:06	80m	-3 / +9	DA6WA	-8 / -8	6	✓ Full exchange observed
07-20 21:04	80m	-1 / -11	YO6LM	+14 / +4	4	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
172545  -2  776  <...> DA1HM JN67 (x5)
172945  +7  409  C91RU DA1HM JN67 (x5)
174815  +6  409  RZ4FWA DA1HM JN67 (x5)

40m

UTC    dB Audio  Message
191345  -5 2758  DA1HM OO26TRUDO -11
200215  -3 1908  DA1HM HA7TM -09 (x3)
200415  -4  772  DA1HM DL7DL JO62 (x2)
161945  -8 1413  DA1HM SQ9KWY -25

80m

UTC    dB Audio  Message
211345  -6 1430  CT7AUT DA1HM JN67 (x4)
211530 -24 1329  DA1HM DL3BH JN48
211545 -11 1430  DL3BH DA1HM -03 (x2)
211645 -11 1370  IW9FRA DA1HM JN67 (x2)
211730 -16 1370  DA1HM IW9FRA -03
211745  +0 1371  IW9FRA DA1HM R-06
211800 -11 1370  DA1HM IW9FRA -03
211815  -4 1370  IW9FRA DA1HM R-05
211830 -11 1370  DA1HM IW9FRA RR73
211845  +4 1371  IW9FRA DA1HM 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.

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