HA5MG/MM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: MARITIME MOBILE

Receiver-side FT8 activity involving HA5MG/MM, decoded by SO8OO in southeastern Poland. 22 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 6 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-13.

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 22 FT8 messages attributed to HA5MG/MM as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (59%), followed by 40 m (41%). Several six-hour UTC windows tied for the largest share (59%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -11 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-11 dB

Estimated median S/N

Bands

40m · 9 20m · 13

First attributed message: 2026-06-06
Last attributed message: 2026-09-13 16:26 UTC

Observed FT8 message patterns

Attributed sample: 22 messages
Active dates: 6 UTC dates
Estimated median S/N: -11 dB
Estimated 10th-90th percentile: -15 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 2, moderate (-15 to -9 dB) 11, strong (≥ -8 dB) 9.

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.

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.

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	HA5MG/MM S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-30 12:50	20m	- / -	IU8WRA	-4 / -	5	Partial capture
08-30 09:07	20m	- / -17	PE1PKI	+8 / -	2	Partial capture
08-30 09:05	20m	-7 / -	<...>	-1 / -	2	✓ Closing fragment
08-30 08:53	20m	-4 / -	<...>	- / -	3	Partial capture
08-30 08:46	20m	+14 / -	HA1BF	- / -	2	Partial capture
08-23 06:32	20m	- / -	LZ3CB	+16 / -	4	Partial capture
08-23 06:26	20m	- / -	LZ3CB	+20 / -	2	Partial capture
08-23 05:34	20m	- / -14	TA2ZLM	-13 / -	6	Partial capture
08-21 15:10	20m	- / -16	ON4AOI	+5 / -	2	Partial capture
08-20 07:53	40m	- / -	<...>	-8 / -	2	✓ Closing fragment
08-20 07:48	40m	- / -	UT4PA	-10 / -	2	Partial capture
08-20 07:45	40m	-17 / -	<...>	-14 / -	4	✓ Closing fragment
06-24 20:47	40m	- / -	DL1SWB	-4 / -	5	Partial capture
06-24 20:35	40m	- / -	<...>	-12 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
204815  -4  964  HA5MG/MM DL1SWB JO53 (x3)
074530 -11 2437  <...> HA5MG/MM (x3)
074845  -9 1344  HA5MG/MM UT4PA KO20 (x2)
074930 -14 1128  HA5MG/MM <...> RR73 (x3)
173745 -15 1687  <...> HA5MG/MM (x2)
174230 -14 2106  <ON4AOI> HA5MG/MM
162630 -13 1913  <...> HA5MG/MM

20m

UTC    dB Audio  Message
090515  -9  744  MI0NWA HA5MG/MM R-14
090530  -1  743  HA5MG/MM <...> RR73
090545  -7  744  <...> HA5MG/MM 73
090715  +8 2558  HA5MG/MM PE1PKI JO22 (x2)
090815  -1  780  HA5MG/MM IN3EZU JN56
122245  -6 1632  HA5MG/MM <...> RRR (x3)
123545  -7 1632  HA5MG/MM ON3RUM JO10
125000  -9  929  HA5MG/MM IU8WRA JM89 (x5)

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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