9A5ZB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Croatia Most frequent locator attributed to this token: JN75

Receiver-side FT8 activity involving 9A5ZB, decoded by SO8OO in southeastern Poland. 72 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-27 and 2026-08-09.

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 72 FT8 messages attributed to 9A5ZB as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (88%), followed by 80 m (10%) and 40 m (3%). Several six-hour UTC windows tied for the largest share (76%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (69%); the estimated median was -6 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

80m · 7 40m · 2 20m · 63

First attributed message: 2026-06-27
Last attributed message: 2026-08-09 15:57 UTC

Observed FT8 message patterns

Attributed sample: 72 messages
Active dates: 10 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -14 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 18, strong (≥ -8 dB) 50.

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 9A5ZB in decoded directed-looking exchanges:

EA8UP · Canary Islands LZ2JE · Bulgaria R2EA · European Russia RA0ADQ · Asiatic Russia RA9ACA · Asiatic Russia SV2CLJ · Greece SV2HXV · Greece SV8DCW · Greece US5ENZ · Ukraine 7X2KF · Algeria A41KB · Oman EI9KF · Ireland

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 9A5ZB

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: JN75 · 47 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 708 km (approx.)
Last such locator decoded: 2026-08-09 15:56 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	9A5ZB S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-13 07:54	10m	- / -13	US5ENZ	+1 / -	3	✓ Closing fragment
08-12 15:03	20m	- / -1	F5IXN	-4 / -	3	✓ Closing fragment
08-11 16:19	20m	- / -2	RA3DAD	-18 / -	2	Partial capture
08-11 16:15	20m	- / -8	F1PBZ	+1 / -	2	Partial capture
08-09 15:52	20m	-8 / -	RU3QR	- / -20	2	✓ Closing fragment
08-09 15:51	20m	-4 / -	R3CE	- / -11	2	✓ Closing fragment
08-09 15:45	20m	-6 / -	A41KB	- / -9	2	✓ Closing fragment
08-09 15:43	20m	-9 / -	C31KC	- / -	2	Partial capture
08-09 15:40	20m	-4 / -	<...>	- / -15	2	Partial capture
08-09 15:36	20m	-2 / -	7X2KF	- / -20	3	✓ Closing fragment
08-05 07:56	10m	- / -1	SV8DCW	-14 / -	2	✓ Closing fragment
08-05 07:52	10m	- / -1	SV2HXV	-2 / -	4	✓ Closing fragment
08-02 07:01	20m	-10 / -	XE2V	- / -	3	Partial capture
08-02 07:00	20m	-14 / -	HK3W	- / -	2	Partial capture
08-02 06:29	10m	- / 0	RA0ADQ	-18 / -	2	✓ Closing fragment
08-01 15:19	20m	0 / -	EI9KF	- / -21	2	✓ Closing fragment
08-01 15:17	20m	-10 / -	DL1R	- / 0	2	Partial capture
07-26 07:31	20m	- / +6	RA6OY	+4 / -	7	Partial capture
07-24 16:20	40m	-12 / -	DL1TC	-22 / -8	2	Partial capture
07-24 16:15	40m	- / +4	HG8LXL	-16 / -	2	✓ Closing fragment
07-19 05:54	10m	- / +3	RA9ACA	-20 / -	2	✓ Closing fragment
07-13 16:52	80m	-7 / -24	F5RRS	-7 / -	4	✓ Closing observed
07-12 06:59	10m	- / +6	LZ2JE	-12 / -	2	✓ Closing fragment
07-08 18:44	20m	0 / -	OZ9FF	- / -	2	Partial capture
07-08 18:42	20m	-3 / -11	EA2EDI	-16 / -14	4	Partial capture
07-06 19:36	80m	- / -	DO1DMR	-8 / -	5	Partial capture
07-05 07:01	20m	-7 / -18	HB9ACA	-17 / -11	3	Partial capture
06-28 09:50	10m	- / -	SV2CLJ	-8 / -	2	✓ Closing fragment
06-27 18:48	20m	0 / -	VU3OSA	- / -	2	Partial capture
06-27 18:43	20m	-8 / -	VU3OSA	- / -	4	Partial capture
06-27 18:38	20m	-7 / -6	SP6AXW	-8 / -	3	✓ Closing observed
06-27 18:29	10m	- / -	EA8UP	-16 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
055415 -19 1490  9A5ZB RA9ACA +03 (x2)
143645  -8 2566  9A5ZB R2EA RR73
062900 -21 1808  9A5ZB RA0ADQ +00 (x2)
075230  -4 2456  9A5ZB SV2HXV KN10 (x4)
075600 -13 1870  9A5ZB SV8DCW -01 (x2)
075230  -9  746  9A5ZB R6DWD -12
075430  +7 2678  9A5ZB US5ENZ KN78 (x3)

20m

UTC    dB Audio  Message
154930  -3 2551  A61SD 9A5ZB JN75
155030  -8 2551  CQ 9A5ZB JN75
155100  -4 2551  R3CE 9A5ZB -11 (x2)
155230  -7 2551  RU3QR 9A5ZB R-20 (x2)
155615  -6 2551  CQ 9A5ZB JN75
155715 -10 2551  M0IEP 9A5ZB RR73
161545  +1 2773  9A5ZB F1PBZ -08 (x2)
161915 -18 1851  9A5ZB RA3DAD KO95 (x2)
150330  +3 2245  9A5ZB F5IXN JN23 (x3)

80m

UTC    dB Audio  Message
193600 -10 2003  9A5ZB DO1DMR JO40 (x5)
165200  -7 2399  CQ 9A5ZB JN75
165215  -6  782  9A5ZB F5RRS JN36 (x2)
165300  -7 2399  F5RRS 9A5ZB RR73
165315  -8  782  9A5ZB F5RRS 73
165400  -6 2399  CQ 9A5ZB JN75 (x5)

40m

UTC    dB Audio  Message
150400 -16  822  9A5ZB DM8MH R-13
161545 -18 1492  9A5ZB HG8LXL R+04 (x2)
162045 -12 2518  DL1TC 9A5ZB -08
162100 -22 1927  9A5ZB DL1TC R+16
162845 -14 2518  CQ 9A5ZB JN75
163030 -12 2517  9A5ZB DA1ST 73
164815  -9 2499  9A5ZB RD7LC -19

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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