OH5Z — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP30

Receiver-side FT8 activity involving OH5Z, decoded by SO8OO in southeastern Poland. 92 FT8 messages attributed to this token as transmitter, on 160m, 80m, across 6 UTC dates in the available aggregate history. Observed between 2026-08-14 and 2026-09-19.

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 92 FT8 messages attributed to OH5Z as the transmitting token by decoded message structure across 6 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (73%), followed by 160 m (27%). Most decodes (92%) fell within the six-hour window 21:00-03:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (89%); the estimated median was +5 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

+5 dB

Estimated median S/N

Bands

160m · 25 80m · 67

First attributed message: 2026-08-14
Last attributed message: 2026-09-19 22:17 UTC

Observed FT8 message patterns

Attributed sample: 92 messages
Active dates: 6 UTC dates
Estimated median S/N: +5 dB
Estimated 10th-90th percentile: -10 to +12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 5, moderate (-15 to -9 dB) 5, strong (≥ -8 dB) 82.

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 OH5Z in decoded directed-looking exchanges:

7X2TT · Algeria VP8A · Falkland Islands XQ3SA · Chile A93MO · Bahrain DO9BAU · Fed. Rep. of Germany HC1BG · Ecuador HI3A · Dominican Republic LU1WFU · Argentina LU7HW · Argentina LU7PBO · Argentina PR7AR · Brazil PU4JOE · Brazil

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 OH5Z

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: KP30 · 54 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,219 km (approx.)
Last such locator decoded: 2026-09-19 22:16 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	OH5Z S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-19 22:12	160m	+2 / +3	7X2TT	0 / -2	12	✓ Full exchange observed
09-07 02:47	80m	-3 / -	PR7AR	- / -4	2	✓ Closing fragment
09-07 02:46	80m	- / -	LZ2VQ	+4 / -	2	Partial capture
09-07 02:45	80m	-4 / -14	HC1BG	-22 / -6	3	✓ Full exchange observed
09-07 02:43	80m	-10 / -	PU4JOE	- / -16	2	✓ Closing fragment
09-07 02:41	80m	-4 / -	HI3A	-15 / -6	4	✓ Closing observed
09-07 02:39	80m	- / -	LZ2VQ	+8 / -	3	Partial capture
09-07 02:38	80m	-7 / -	YV6BXN	-24 / -	3	✓ Closing observed
09-07 02:36	80m	+12 / -	LU7PBO	- / -16	4	✓ Closing fragment
09-07 02:35	80m	- / -	LZ2VQ	+3 / -	3	Partial capture
09-07 02:33	80m	+4 / -	YO/OE9RWH	- / -17	2	Partial capture
09-07 02:17	80m	+4 / -	HI3JCC	- / -	2	Partial capture
09-07 02:14	80m	+6 / -	LU1WFU	- / -16	2	✓ Closing fragment
09-07 02:13	80m	0 / -	LU7HW	- / -1	2	✓ Closing fragment
09-07 02:12	80m	+2 / -22	W2CG	-16 / -14	3	✓ Full exchange observed
09-07 02:11	80m	+4 / -	PY5HOT	-13 / -5	3	✓ Closing observed
09-07 02:11	80m	+4 / -4	DO9BAU	+8 / -	9	✓ Full exchange observed
09-07 02:08	80m	+2 / -16	TI2SD	-22 / -4	9	✓ Full exchange observed
09-07 01:53	160m	+11 / -	XQ3SA	- / -13	3	✓ Closing fragment
09-07 01:47	160m	- / -	UA4FKT	+2 / -	3	Partial capture
09-07 01:46	160m	+9 / -	VP8A	- / -5	3	✓ Closing fragment
09-07 01:42	160m	+9 / -	CE8WBJ	- / -	7	Partial capture
09-03 21:36	160m	-10 / -	RI1FJL	- / -8	2	Partial capture
09-01 17:15	80m	-13 / -	P29YY	- / -14	7	Partial capture
08-25 21:40	80m	+9 / -	RI1FJL	- / -14	7	Partial capture
08-25 21:31	80m	+6 / -	RI1FJL	- / -	5	Partial capture
08-14 00:33	80m	- / -	RX6DA	+4 / -	3	Partial capture
08-14 00:32	80m	- / -	EA5HM	-13 / -	3	Partial capture
08-14 00:32	80m	- / -3	LZ2VQ	+3 / -	3	Partial capture
08-14 00:31	80m	+12 / -	A93MO	- / -10	3	✓ Closing fragment
08-14 00:22	80m	+11 / -	A93MO	- / -	9	Partial capture

Recent FT8 messages decoded at SO8OO

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

160m

UTC    dB Audio  Message
015315 +11 2137  XQ3SA OH5Z KP30 (x3)
221215 +12 2245  7X2TT OH5Z KP30 (x8)
221630  +0  496  OH5Z 7X2TT +03
221645  +4 2245  7X2TT OH5Z R-02
221700  -1  496  OH5Z 7X2TT RR73
221715  -4 2245  7X2TT OH5Z 73

80m

UTC    dB Audio  Message
024045  +5 2304  OH5Z LZ2VQ KN23
024100  +0 2303  HI3A OH5Z KP30 (x2)
024145 -15  400  OH5Z HI3A RR73
024200 -11 2303  HI3A OH5Z 73
024245 -22 2304  OH5Z R9WCK LO72
024300 -21 2303  PU4JOE OH5Z R-16 (x2)
024515 -22 1443  OH5Z HC1BG -14
024530  -6 2304  HC1BG OH5Z R-06 (x2)
024615  +6 2304  OH5Z LZ2VQ KN23 (x2)
024700  -4 2304  PR7AR OH5Z -04 (x2)

10m

UTC    dB Audio  Message
072615 -16 2380  OH5Z RV6HE -02

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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