5B4AHO — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Cyprus Most frequent locator attributed to this token: KM64

Receiver-side FT8 activity involving 5B4AHO, decoded by SO8OO in southeastern Poland. 243 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 17 UTC dates in the available aggregate history. Observed between 2026-06-11 and 2026-08-31.

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 243 FT8 messages attributed to 5B4AHO as the transmitting token by decoded message structure across 17 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 10 m (0%). Most decodes (58%) fell within the six-hour window 11:00-17:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (66%); the estimated median was -6 dB.

Overview

243

Messages attributed

UTC dates decoded

Active 15-min windows

-6 dB

Estimated median S/N

Bands

20m · 242 10m · 1

First attributed message: 2026-06-11
Last attributed message: 2026-08-31 19:07 UTC

Observed FT8 message patterns

Attributed sample: 243 messages
Active dates: 17 UTC dates
Estimated median S/N: -6 dB
Estimated 10th-90th percentile: -15 to +5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 21, moderate (-15 to -9 dB) 61, strong (≥ -8 dB) 161.

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 5B4AHO in decoded directed-looking exchanges:

IU0VOG · Italy IW7DHC · Italy UX3HX · Ukraine 9A6NTK · Croatia CT7AUT · Portugal EA3EDU · Spain EA3IAZ · Spain G0VDE · England G1OVA · England HB9EKJ · Switzerland IK4RVY · Italy M0UTD · England

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 5B4AHO

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: KM64 · 146 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,944 km (approx.)
Last such locator decoded: 2026-08-31 19:07 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	5B4AHO S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-31 19:06	20m	-12 / -	BU2FW	- / -	3	Partial capture
08-31 19:03	20m	-10 / -	BU2FW	- / -	2	Partial capture
08-31 17:54	20m	- / -	RA1CY	0 / -	2	Partial capture
08-31 17:54	20m	-12 / -	OD5KU	- / -	3	Partial capture
08-31 17:01	20m	- / -15	9M2DGA	-10 / -	2	Partial capture
08-31 16:41	20m	-8 / -	Z21ML	- / -	12	Partial capture
08-31 16:08	20m	-12 / -	R6DZO	- / -2	2	✓ Closing fragment
08-31 16:06	20m	-8 / -9	PA0RRS	-12 / -11	10	✓ Full exchange observed
08-31 16:03	20m	-10 / 0	CT7AUT	-4 / 0	6	✓ Full exchange observed
08-30 13:13	20m	+2 / -	RI1FJL	- / -11	8	✓ Closing fragment
08-30 12:13	20m	-8 / -	ZA5G	- / -	3	Partial capture
08-16 15:06	20m	-11 / +3	MD0CCE	+9 / +7	8	✓ Full exchange observed
08-16 08:54	10m	- / -15	UX3HX	+4 / -	9	✓ Closing fragment
08-16 08:48	10m	- / -13	EA3EDU	-18 / -	6	Partial capture
08-16 08:46	10m	- / -	DL2MIJ	+2 / -	2	Partial capture
08-16 08:42	10m	- / -	UX3HX	-8 / -	5	Partial capture
08-16 08:39	10m	- / -	IU0VOG	-8 / -	3	✓ Closing fragment
08-16 08:38	10m	- / -	EA3EDU	-14 / -	4	Partial capture
08-15 18:52	20m	-5 / -9	MI0JZZ	-6 / -19	5	✓ Full exchange observed
08-15 18:43	20m	-12 / -	HB9EKJ	- / -3	3	✓ Closing fragment
08-09 14:33	20m	-11 / -	<...>	- / -	2	Partial capture
08-09 14:23	20m	-5 / -	HB9HYO	- / -	3	Partial capture
08-09 14:18	20m	-5 / -10	IK4RVY	-14 / -16	5	✓ Full exchange observed
08-09 13:48	20m	-13 / -6	SV2HTW	-11 / -	3	✓ Closing observed
08-09 12:11	20m	-10 / -	RM3TO	- / -	2	Partial capture
08-07 19:21	20m	-5 / -	CO8LY	- / -	10	Partial capture
08-07 11:05	20m	- / -10	RK4FF	-7 / -	3	Partial capture
07-31 21:04	20m	- / -6	9K2OK	-16 / -	2	Partial capture
07-31 20:57	20m	-11 / -	9K2OK	- / -	2	Partial capture
07-31 20:27	20m	- / -	MM0JTV	-18 / -	2	Partial capture
07-31 20:26	20m	-3 / -	9A6NTK	- / +10	2	✓ Closing fragment
07-31 20:23	20m	-4 / -	SP2BBQ	- / -15	5	✓ Closing fragment
07-28 19:13	20m	-5 / -	EA3EDU	- / -16	2	✓ Closing fragment
07-28 19:10	20m	- / -	EA3EDU	-18 / -	2	Partial capture
07-28 19:07	20m	-11 / -	HA6NN	- / -	4	Partial capture
07-28 19:07	20m	-6 / +7	IU1WKA	+1 / -17	12	Partial capture
07-28 18:55	20m	-11 / -	RM3ZK	- / +1	3	✓ Closing fragment
07-28 18:54	20m	-10 / -	DJ9WJ	- / -	2	Partial capture
07-28 18:29	40m	- / -13	US1ZA	-4 / -	2	✓ Closing fragment
07-28 18:05	20m	-8 / -	OE8DDX	- / -7	3	✓ Closing fragment
07-28 17:53	20m	- / -10	PD1ADA	-19 / -	2	Partial capture
07-26 12:47	20m	-12 / -	HA1BF	- / -8	2	Partial capture
07-26 12:38	20m	-9 / -	TA3ZZ	- / -19	2	Partial capture
07-26 12:26	20m	-6 / -	OH2XO	- / -	4	Partial capture
07-26 12:24	20m	-8 / -	SP9D	- / -13	3	Partial capture
07-26 12:21	20m	-16 / -	OM3CPV	- / -11	2	✓ Closing fragment
07-26 11:32	20m	-12 / -	SV1DKR	- / -21	4	Partial capture
07-24 19:07	40m	- / -9	9K2HN	-5 / -	2	✓ Closing fragment
07-24 18:32	20m	-10 / -	Z62NS	- / -3	4	✓ Closing fragment
07-24 14:44	20m	-13 / -6	UA4FEN	-8 / -	2	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
164815 -15 1006  Z21ML 5B4AHO KM64 (x3)
170115 -11 1187  5B4AHO 9M2DGA -15 (x2)
175400 -14 1074  OD5KU 5B4AHO KM64 (x2)
175445  -1 2827  5B4AHO RA1CY KO59 (x2)
175530  -9 1073  OD5KU 5B4AHO KM64
190300  -8 1074  BU2FW 5B4AHO KM64 (x5)

10m

UTC    dB Audio  Message
084815 -18 1238  5B4AHO EA3EDU R-13 (x6)
085445  +5  620  5B4AHO UX3HX KN79 (x9)

80m

UTC    dB Audio  Message
202130 -21 1107  5B4AHO OD5SB KM74

40m

UTC    dB Audio  Message
185030 -12 1910  5B4AHO YO6QDY KN26 (x4)
190730  -6 1579  5B4AHO 9K2HN -09 (x2)
182945  -5 1929  5B4AHO US1ZA -13 (x2)

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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