DC7MA — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Fed. Rep. of Germany Most frequent locator attributed to this token: JN39

Receiver-side FT8 activity involving DC7MA, decoded by SO8OO in southeastern Poland. 1,063 FT8 messages attributed to this token as transmitter, on 80m, 60m, 40m, 20m, 10m, across 46 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-05.

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 1,063 FT8 messages attributed to DC7MA as the transmitting token by decoded message structure across 46 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (37%), followed by 80 m (33%) and 60 m (12%). Most decodes (78%) fell within the six-hour window 17:00-23:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -9.7 dB.

Overview

1,063

Messages attributed

UTC dates decoded

131

Active 15-min windows

-9.7 dB

Estimated median S/N

Bands

80m · 350 60m · 123 40m · 388 20m · 115 10m · 87

First attributed message: 2026-06-07
Last attributed message: 2026-10-05 11:48 UTC

Observed FT8 message patterns

Attributed sample: 1,063 messages
Active dates: 46 UTC dates
Estimated median S/N: -9.7 dB
Estimated 10th-90th percentile: -20 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 245, moderate (-15 to -9 dB) 341, strong (≥ -8 dB) 477.

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 DC7MA in decoded directed-looking exchanges:

LA8OOA · Norway ×2 DK0ACI · Fed. Rep. of Germany ×2 G7BTP · England ×2 II5GG · Italy ×2 IK4CBO · Italy ×2 DL4ABN · Fed. Rep. of Germany ×2 EI8GS · Ireland G1JRU · England LZ2II · Bulgaria TK5K · Corsica 7Z1BM · Saudi Arabia BA3NZ · China

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 DC7MA

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: JN39 · 610 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,063 km (approx.)
Last such locator decoded: 2026-10-05 11:48 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	DC7MA S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-05 11:40	40m	-22 / -	PD2MAC	- / +10	4	✓ Closing fragment
10-05 11:38	40m	-21 / -	MI7XHT	- / -11	5	✓ Closing fragment
10-05 11:36	40m	-20 / -8	IZ2ARJ	-10 / -5	5	✓ Full exchange observed
10-05 11:35	40m	-22 / -	OK2LB	-20 / -11	3	✓ Closing observed
10-05 11:20	40m	- / +3	DF0AWG	-8 / -	2	✓ Closing fragment
10-04 20:26	80m	-6 / -2	DO8JB	-12 / +10	5	✓ Full exchange observed
10-04 20:24	80m	-2 / -	GW0ARK	-2 / -	4	✓ Closing observed
10-04 20:23	80m	-10 / -	DO3RST	- / -	2	Partial capture
10-04 20:19	80m	-4 / -12	DO2PY	-6 / +6	4	✓ Full exchange observed
10-04 20:17	60m	-12 / -	DL7DL	- / -	2	Partial capture
10-04 20:14	60m	-12 / -	ON7GB	- / -	2	Partial capture
10-04 20:14	60m	-13 / -4	G0IOW	-18 / +6	6	✓ Full exchange observed
10-04 20:11	60m	-12 / -15	DJ6OI/P	-12 / -12	5	✓ Full exchange observed
10-04 20:09	60m	-19 / -10	OE9RWH	-8 / -10	5	✓ Full exchange observed
10-04 20:07	60m	-17 / -	SP6ZC	- / -	3	Partial capture
10-04 20:05	60m	-16 / -8	DM5GG	+2 / -	3	✓ Closing observed
10-04 20:02	60m	-16 / -	YL3FW	- / -	2	Partial capture
10-04 20:01	60m	-16 / -12	G1BJC	-4 / -7	7	✓ Full exchange observed
10-04 19:53	40m	-2 / -	2I0GOK	- / -14	2	Partial capture
10-04 19:52	40m	-4 / -	SP4VIT	- / +8	3	✓ Closing fragment
10-04 19:50	40m	-6 / -	IQ9SZ/2	- / -4	2	Partial capture
10-04 19:47	40m	-7 / +1	IZ4TSV	-10 / 0	4	✓ Full exchange observed
10-04 19:46	40m	-8 / -	IK0XBX	- / +3	3	✓ Closing fragment
10-04 19:43	40m	-2 / -	M0XRD	- / +6	3	✓ Closing fragment
10-04 19:41	40m	-5 / +3	IQ2AAH	-2 / +10	4	✓ Full exchange observed
10-04 19:38	40m	-11 / -	MI0CBH	- / +2	3	✓ Closing fragment
10-04 19:36	40m	-1 / +6	9A3MRN	0 / -	5	✓ Full exchange observed
10-04 19:35	40m	- / -6	IQ0YA	-4 / -	2	✓ Closing fragment
10-04 19:33	40m	0 / -	IQ6MW	- / -8	2	✓ Closing fragment
10-04 19:31	40m	+3 / -	OE3PWR	- / -	3	Partial capture
10-04 19:28	40m	-7 / -12	SP5MXZ	-17 / -1	5	✓ Full exchange observed
10-04 19:25	40m	-13 / -	IZ6ASI	- / 0	3	✓ Closing fragment
10-04 19:24	40m	-15 / -	UT0IN	+2 / -	2	✓ Closing observed
10-04 19:20	40m	-7 / +2	IV3JTG	0 / -	4	✓ Full exchange observed
10-04 19:19	40m	-4 / -6	OE5KBO	-4 / -	3	Partial capture
10-04 19:14	40m	-9 / -	IQ0YA	- / -	2	Partial capture
10-04 19:13	40m	-9 / -	9K2MP	- / -	3	Partial capture
10-04 19:11	40m	-12 / -	SV3AUW	- / +2	3	✓ Closing fragment
10-04 19:10	40m	-12 / -6	SM3VOX	-9 / -	4	Partial capture
10-04 19:09	40m	-8 / -12	II5GG	-5 / -1	5	✓ Full exchange observed
10-04 19:07	40m	-9 / -9	CT7AIU	-8 / +6	5	✓ Full exchange observed
10-04 19:05	40m	-9 / -	MX0SQC	- / -7	3	✓ Closing fragment
10-04 19:03	40m	-7 / +1	IK4RVY	-11 / -	5	✓ Full exchange observed
10-04 18:58	40m	-8 / -13	M0MLS	-6 / -	4	✓ Full exchange observed
10-04 18:58	40m	-5 / +1	G7BTP	-11 / -10	6	✓ Full exchange observed
10-04 18:52	40m	-6 / -9	M8KUU	-12 / -	5	✓ Full exchange observed
10-04 18:51	40m	-8 / -	M0SVX	- / -	2	Partial capture
10-04 18:49	40m	-7 / -	EA2EED	- / +1	3	✓ Closing fragment
10-04 18:48	40m	-12 / +2	DJ3JA	-18 / -1	3	✓ Full exchange observed
10-04 18:47	40m	-8 / -	G8VHI	- / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
113645  -9  850  DC7MA IZ2ARJ -08
113700 -19 1886  IZ2ARJ DC7MA R-05
113715 -12  850  DC7MA IZ2ARJ RR73
113730 -20 1886  IZ2ARJ DC7MA 73
113815 -20 1886  MI7XHT DC7MA JN39 (x5)
114030 -18 2405  DC7MA DA0M JO50
114045 -19 1885  PD2MAC DC7MA JN39 (x4)
114800 -24 1525  M0SKT DC7MA JN39

80m

UTC    dB Audio  Message
202015  -3 1899  DO2PY DC7MA R+06
202030 -11  830  DC7MA DO2PY RR73
202215 -11 1798  DJ7M DC7MA JN39
202345 -13 1247  DO3RST DC7MA JN39 (x2)
202445  -6 1247  GW0ARK DC7MA JN39 (x2)
202530  -2 2337  DC7MA GW0ARK RR73
202545  -4 1247  GW0ARK DC7MA 73
202600 -12 1246  DC7MA DO8JB JO32
202615  -7 1246  DO8JB DC7MA +10
202630 -13 1246  DC7MA DO8JB R-02
202645  -5 1246  DO8JB DC7MA RR73
202700 -11 1246  DC7MA DO8JB 73
202745  -5 1349  DG2EBG DC7MA JN39

60m

UTC    dB Audio  Message
201130 -15 1336  DJ6OI/P DC7MA JN39
201215 -14  933  DC7MA DJ6OI/P -15
201300  -5 1336  DJ6OI/P DC7MA R-12
201315 -11  933  DC7MA DJ6OI/P RR73
201330 -16 1336  DJ6OI/P DC7MA 73
201400 -12 1336  G0IOW DC7MA JN39
201445 -10 1444  ON7GB DC7MA JN39 (x2)
201600 -16 1444  G0IOW DC7MA JN39
201615 -19 1923  DC7MA G0IOW -04
201630 -11 1444  G0IOW DC7MA R+06
201645 -17 1923  DC7MA G0IOW RR73
201700 -13 1444  G0IOW DC7MA 73
201730 -15 1444  DL7DL DC7MA JN39 (x2)

20m

UTC    dB Audio  Message
131015  -5 1503  DC7MA LA8OOA RR73
131200 -15 1935  EA5KAI DC7MA JN39
131430 -21 1935  OM7AG DC7MA R+09 (x2)
131530 -18 1935  JJ5NFT DC7MA JN39 (x2)
131700 -16 1935  IZ0RDM DC7MA JN39 (x2)
131800 -10 1935  EA5KAI DC7MA JN39 (x4)
132545 -12 1931  LZ3HI DC7MA JN39
132715 -15 1930  K2TQC DC7MA JN39 (x2)

10m

UTC    dB Audio  Message
133400 -18 2021  YT1DDL DC7MA JN39
133815 -11  746  OM7ASP DC7MA JN39 (x2)
133945 -10  746  ON4JMV DC7MA JN39
134115 -10  820  SM0VKU DC7MA JN39 (x4)
134315 -10  820  OM7ASP DC7MA JN39 (x4)
191015 -12  632  G4XWR DC7MA JN39
121015  -7 2076  DC7MA DO1HKL -18
163330 -19 1130  DC7MA EI8GS RR73

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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