YO5OHT — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Romania Most frequent locator attributed to this token: KN16

Receiver-side FT8 activity involving YO5OHT, decoded by SO8OO in southeastern Poland. 586 FT8 messages attributed to this token as transmitter, on 40m, 20m, across 18 UTC dates in the available aggregate history. Observed between 2026-06-08 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 586 FT8 messages attributed to YO5OHT as the transmitting token by decoded message structure across 18 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (62%), followed by 20 m (38%). Most decodes (51%) fell within the six-hour window 12:00-18:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (71%); the estimated median was -2.4 dB.

Overview

586

Messages attributed

UTC dates decoded

Active 15-min windows

-2.4 dB

Estimated median S/N

Bands

40m · 364 20m · 222

First attributed message: 2026-06-08
Last attributed message: 2026-09-13 13:28 UTC

Observed FT8 message patterns

Attributed sample: 586 messages
Active dates: 18 UTC dates
Estimated median S/N: -2.4 dB
Estimated 10th-90th percentile: -15 to +6.6 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 52, moderate (-15 to -9 dB) 119, strong (≥ -8 dB) 415.

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 YO5OHT in decoded directed-looking exchanges:

4O7CC · Montenegro DB2QM · Fed. Rep. of Germany DL1AG · Fed. Rep. of Germany DL8YBL · Fed. Rep. of Germany EA5DKT · Spain F1IQH · France F1PBZ · France G4DBW · England HB9CNU/P · Switzerland II3WWA · Italy IK1AMC · Italy IK4LZH · Italy

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 YO5OHT

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: KN16 · 348 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 393 km (approx.)
Last such locator decoded: 2026-09-13 13:25 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	YO5OHT S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 03:20	40m	- / -6	R6LE	+3 / -	4	✓ Closing fragment
09-21 03:12	40m	- / -5	M7ISX	-10 / -	3	✓ Closing fragment
09-21 02:33	40m	- / -8	RY3F	+5 / -	2	✓ Closing fragment
09-21 02:32	40m	- / -3	OD5ZZ	-9 / -	2	Partial capture
09-21 02:31	40m	- / -13	N8HRZ	-9 / -	2	✓ Closing fragment
09-13 13:26	40m	+4 / -	HB9LBR	- / -21	5	Partial capture
08-28 12:40	20m	- / -15	DL8YBL	0 / -	3	✓ Closing fragment
08-28 12:25	20m	- / -3	PD2WL	+24 / -	4	✓ Closing fragment
08-28 12:13	20m	- / -1	LA1SNA	-12 / -	2	Partial capture
08-17 22:27	40m	-15 / -5	S56KO	-1 / +6	6	✓ Full exchange observed
08-17 22:24	40m	-14 / -	CR7BRV	- / +1	5	✓ Closing fragment
08-09 13:44	20m	- / -19	DG5PW	-8 / -	2	Partial capture
08-09 13:42	20m	- / -13	OM1AMT	+4 / -	3	✓ Closing fragment
07-29 15:14	20m	- / -	DH1KU	-18 / -	2	Partial capture
07-29 15:06	20m	- / -1	F1PBZ	-5 / -	2	✓ Closing fragment
07-10 05:33	40m	-9 / -	G0BLB	- / -3	8	✓ Closing fragment
07-10 05:26	40m	-2 / -	SP5DUJ	- / -15	2	✓ Closing fragment
07-10 05:09	40m	- / -3	OE8RAK	-14 / -	2	✓ Closing fragment
07-10 05:04	40m	- / -2	9A3AUH	-10 / -	6	✓ Closing fragment
07-09 14:06	20m	- / +2	UA6HBJ	-4 / -	2	✓ Closing fragment
07-09 11:14	20m	- / -8	M9VVE	-6 / -	13	✓ Closing fragment
07-09 11:08	20m	-20 / -4	IK1AMC	-10 / -11	5	✓ Full exchange observed
07-09 11:06	20m	-20 / -	SP9JQZ	- / -19	2	Partial capture
07-09 11:01	20m	-16 / -	SQ8BWA	- / +2	3	Partial capture
07-08 09:32	20m	- / -10	DL1FTY	-12 / -	3	Partial capture
07-08 09:28	20m	-2 / -	DJ0BS	- / -	2	Partial capture
07-08 09:26	20m	-6 / -	M7NHD	- / -15	3	Partial capture
07-08 09:21	20m	-12 / -	SV9ANC	- / -	3	Partial capture
07-08 09:15	20m	-11 / -	4O7CC	- / -11	6	✓ Closing fragment
07-08 09:06	20m	-1 / -	EA5DKT	- / -11	3	✓ Closing fragment
07-08 09:04	20m	-10 / -	4O7CC	- / -23	3	Partial capture
07-08 06:14	20m	- / -	HB9CNU/P	-17 / -	2	✓ Closing fragment
07-08 05:55	20m	-9 / -	UR6QV	-7 / +2	3	✓ Closing observed
07-08 05:51	20m	-15 / -	SP5EXA	- / +5	3	Partial capture
07-08 05:47	20m	-7 / -	KF0YOB	- / -	2	Partial capture
07-08 05:45	20m	-13 / -	N3VA	- / -	2	Partial capture
07-08 05:43	20m	-10 / -	A61QQ	- / -2	3	Partial capture
07-04 07:16	40m	-15 / -	OE6FEF	- / +9	5	✓ Closing fragment
07-04 07:12	40m	-11 / -	SP9OC	- / -1	2	✓ Closing fragment
07-04 05:26	40m	-10 / -	SV9MBH	- / -9	2	✓ Closing fragment
07-04 05:18	40m	-8 / -	SP9JMZ	- / -5	2	✓ Closing fragment
07-04 05:17	40m	-13 / -	SP2SGZ	- / -7	2	✓ Closing fragment
07-04 05:13	40m	-11 / -	OK1HEH	- / -9	3	✓ Closing fragment
07-02 12:17	20m	- / -9	IU2SLB	-10 / -	2	Partial capture
07-02 12:09	20m	- / -	RN4AZ	-8 / -	2	✓ Closing fragment
07-02 11:51	20m	- / +1	IK4LZH	+8 / -	4	✓ Closing fragment
07-02 11:46	20m	- / -20	G4DBW	-6 / -	3	✓ Closing fragment
07-02 11:46	20m	- / -17	TM2WWA	-16 / -	4	Partial capture
06-30 12:34	20m	-5 / -	DL1AG	-17 / +4	2	✓ Closing observed
06-30 12:32	20m	-2 / -	SA5HAG	-18 / +1	3	✓ Closing observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
132815  +7  612  HB9LBR YO5OHT -21 (x2)
023115 -10 2513  YO5OHT N8HRZ -13 (x2)
023245  -9  570  YO5OHT OD5ZZ -03
023345  +6 1021  YO5OHT RY3F -08
023345  -9  571  YO5OHT OD5ZZ -05
023415  +4 1021  YO5OHT RY3F RR73
031215  -8 1027  YO5OHT M7ISX JO01 (x3)
032015  +0 2121  YO5OHT R6LE LN07 (x4)

20m

UTC    dB Audio  Message
134230  +6  500  YO5OHT OM1AMT R-13 (x2)
134430  -7  501  YO5OHT DG5PW R-19 (x2)
134615 -15 1468  LA7DMA YO5OHT KN16
225315  -8  546  YO5OHT PW8BR -10
121300 -11 1316  YO5OHT LA1SNA JO49 (x2)
122500 +26 2656  YO5OHT PD2WL -03 (x4)
124000  +0 1907  YO5OHT DL8YBL JO31 (x3)

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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