9A3MRN — 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: Croatia Most frequent locator attributed to this token: JN85

Receiver-side FT8 activity involving 9A3MRN, decoded by SO8OO in southeastern Poland. 3,193 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 39 UTC dates in the available aggregate history. Observed between 2026-07-07 and 2026-10-26.

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 3,193 FT8 messages attributed to 9A3MRN as the transmitting token by decoded message structure across 39 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (81%), followed by 20 m (19%). Most decodes (61%) fell within the six-hour window 15:00-21:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (72%); the estimated median was -2 dB.

Overview

3,193

Messages attributed

UTC dates decoded

242

Active 15-min windows

-2 dB

Estimated median S/N

Bands

40m · 2,577 20m · 616

First attributed message: 2026-07-07
Last attributed message: 2026-10-26 15:34 UTC

Observed FT8 message patterns

Attributed sample: 3,193 messages
Active dates: 39 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -15.2 to +8 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 314, moderate (-15 to -9 dB) 575, strong (≥ -8 dB) 2,304.

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 9A3MRN in decoded directed-looking exchanges:

IQ4JO · Italy ×3 DL7FAI · Fed. Rep. of Germany ×2 DM5CF · Fed. Rep. of Germany ×2 F1PBZ · France ×2 F3CJ · France ×2 F4FSY · France ×2 G0ANS · England ×2 GJ0KYZ · Jersey ×2 IK1MJK · Italy ×2 IZ3EAW · Italy ×2 OM6APJ · Slovak Republic ×2 PD0ACM · Netherlands ×2

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 9A3MRN

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: JN85 · 1,677 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 610 km (approx.)
Last such locator decoded: 2026-10-26 15:33 UTC

Other locator fields attributed to this token: JN75 (5).

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	9A3MRN S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-26 15:33	40m	+2 / -	PD4MB	- / -9	2	✓ Closing fragment
10-26 15:32	40m	0 / -	PE1BTV	- / -19	2	✓ Closing fragment
10-26 15:30	40m	+2 / -	F6GDM	- / -14	2	✓ Closing fragment
10-26 15:29	40m	+4 / -	IQ4JO	-12 / -3	4	✓ Closing observed
10-26 15:27	40m	+5 / -	DL6FCK	-6 / -7	3	✓ Closing observed
10-26 15:24	40m	+4 / -	DL1ASL	- / -19	2	✓ Closing fragment
10-26 15:22	40m	+6 / -22	DJ0BS	-12 / -5	5	✓ Full exchange observed
10-26 15:19	40m	+6 / +8	DM5CF	+1 / -	4	✓ Closing observed
10-26 15:18	40m	+3 / -	DL8NDV/P	- / -16	2	✓ Closing fragment
10-26 15:16	40m	+4 / 0	DJ0WJ	-8 / -5	5	✓ Full exchange observed
10-26 15:14	40m	+4 / -	HB9MZI	- / -22	4	✓ Closing fragment
10-26 15:11	40m	-2 / -12	RU3DNN	-14 / -9	5	✓ Full exchange observed
10-26 15:10	40m	-1 / -	OZ1SMB	+4 / -	2	✓ Closing observed
10-26 15:07	40m	0 / -	IU0HVM	- / -11	2	✓ Closing fragment
10-26 15:06	40m	-1 / -	RT8T	- / -	3	✓ Closing fragment
10-26 15:02	40m	-4 / -17	RU3OH	-8 / -11	5	✓ Full exchange observed
10-26 14:56	40m	+6 / -	DH2NJS	-13 / -18	16	Partial capture
10-26 14:36	40m	+1 / -	XX9TXN	- / -	22	Partial capture
10-26 14:30	40m	+1 / -	JT1DN	- / -	12	Partial capture
10-26 14:23	40m	+1 / -	5W1SA	- / -	11	Partial capture
10-26 14:21	40m	+3 / -	XX9TXN	- / -	3	Partial capture
10-26 14:09	40m	-2 / -	XX9TXN	- / -	13	Partial capture
10-26 14:08	40m	- / +2	F1PBZ	-7 / -	2	Partial capture
10-15 18:21	40m	+4 / -	AP2MKB	- / -	4	Partial capture
10-15 18:17	40m	+3 / -	BH2XAY	- / -12	4	Partial capture
10-15 18:14	40m	+4 / -	DA0M	- / -7	2	Partial capture
10-15 17:47	40m	+4 / -4	DL1JEL	-2 / -12	4	✓ Full exchange observed
10-15 17:43	40m	+1 / -	VU2FR	- / -14	6	✓ Closing fragment
10-15 17:42	40m	+6 / -	SA6LDQ	- / -11	2	✓ Closing fragment
10-15 17:40	40m	+3 / -	R6ZEJ	- / -13	2	✓ Closing fragment
10-15 17:36	40m	+4 / -	ON6CQ	- / -5	7	Partial capture
10-15 17:34	40m	+4 / -8	SM5IZS	-12 / -6	4	✓ Full exchange observed
10-15 17:31	40m	+4 / -	DB6FA	- / -20	5	✓ Closing fragment
10-15 17:30	40m	+2 / -2	RW6B	-10 / -5	3	✓ Full exchange observed
10-15 17:27	40m	+6 / -	BG4OOO	- / -18	2	✓ Closing fragment
10-15 17:23	40m	+4 / -	RM1B	- / -16	2	✓ Closing fragment
10-15 17:21	40m	+7 / -	BH4ECL	- / -2	4	✓ Closing fragment
10-15 17:19	40m	+6 / -	RA4LAG	- / -10	2	✓ Closing fragment
10-15 17:14	40m	+6 / -	M9XPN	- / +5	5	Partial capture
10-15 17:11	40m	+6 / -	RU4SO	- / -6	2	✓ Closing fragment
10-14 18:08	40m	+13 / -	9M2SWI	- / -21	3	✓ Closing fragment
10-14 18:05	40m	+11 / -	ER1TX	- / -	3	Partial capture
10-14 18:03	40m	+10 / -	VJ6X	- / -6	3	✓ Closing fragment
10-13 20:39	40m	- / -	EA7UW	-10 / -	5	Partial capture
10-13 20:22	40m	- / -14	F5NNN	+4 / -	3	✓ Closing fragment
10-13 19:45	40m	- / -5	R2ASY	-1 / -	6	Partial capture
10-13 19:39	40m	- / -17	IK4RVY	+2 / -	11	Partial capture
10-13 19:36	40m	- / -10	M9XPN	-14 / -	2	Partial capture
10-13 19:28	40m	-2 / -18	IZ3EAW	+2 / -11	6	✓ Full exchange observed
10-13 19:25	40m	-4 / -1	PD0ACM	-14 / -12	8	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
152815  +7 1533  DL6FCK 9A3MRN RR73
152900 -12 2312  9A3MRN IQ4JO JN63
152915  +3 1533  IQ4JO 9A3MRN -03 (x2)
153000 -12 2312  9A3MRN IQ4JO 73
153015  +1 1533  CQ 9A3MRN JN85
153045  +0 1532  F6GDM 9A3MRN -14 (x2)
153145  +0 1533  CQ 9A3MRN JN85
153215  -2 1533  PE1BTV 9A3MRN -19 (x2)
153315  -7 1533  CQ 9A3MRN JN85
153330  -8 1532  9A3MRN UT0UO KO50
153345  +4 1533  PD4MB 9A3MRN -09 (x2)

80m

UTC    dB Audio  Message
200045  +2 1500  9A3MRN UX7QV KN29 (x7)

20m

UTC    dB Audio  Message
222015 -12 1941  9A3MRN KS4OT EM83 (x3)
223030 -13 1942  WA9SUG 9A3MRN -16 (x5)
223815 -16 1397  9A3MRN PY2GZ GG66 (x3)
223930 -20 1942  CQ 9A3MRN JN85                        a1 (x2)
224130 -19 1942  JH5HDA 9A3MRN RR73
224215 -16 1160  BU2AD 9A3MRN JN85

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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