OH1MLZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP23

Receiver-side FT8 activity involving OH1MLZ, decoded by SO8OO in southeastern Poland. 2,987 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, across 52 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-10-06.

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 2,987 FT8 messages attributed to OH1MLZ as the transmitting token by decoded message structure across 52 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (57%), followed by 160 m (23%) and 60 m (19%). Most decodes (72%) fell within the six-hour window 00:00-06:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (96%); the estimated median was +10 dB.

Overview

2,987

Messages attributed

UTC dates decoded

301

Active 15-min windows

+10 dB

Estimated median S/N

Bands

160m · 675 80m · 1,699 60m · 577 40m · 36

First attributed message: 2026-06-19
Last attributed message: 2026-10-06 17:07 UTC

Observed FT8 message patterns

Attributed sample: 2,987 messages
Active dates: 52 UTC dates
Estimated median S/N: +10 dB
Estimated 10th-90th percentile: -2 to +17.9 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 28, moderate (-15 to -9 dB) 81, strong (≥ -8 dB) 2,878.

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 OH1MLZ in decoded directed-looking exchanges:

PY2CP · Brazil ×3 AA6KJ · United States ×2 JA1ILA · Japan ×2 KE4EB · United States ×2 KM0T · United States ×2 KP4AA · Puerto Rico ×2 PY2GN · Brazil ×2 PY5XT · Brazil ×2 RI1FJL · Franz Josef Land ×2 RI1FJZ · Franz Josef Land ×2 UN7CL · Kazakhstan ×2 W7YA · United States ×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 OH1MLZ

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: KP23 · 1,372 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,520 km (approx.)
Last such locator decoded: 2026-10-06 17:06 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	OH1MLZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-06 17:06	80m	+10 / -	A41DV	- / -14	3	✓ Closing fragment
10-06 16:53	80m	+6 / -	BX4AQ	- / -13	8	✓ Closing fragment
10-06 16:50	80m	-1 / -	BX4AQ	- / -	3	Partial capture
10-06 16:09	80m	- / -	DA6HMT	-14 / -	2	Partial capture
10-03 05:46	80m	- / -	DO1OAS	+1 / -	11	Partial capture
10-03 05:44	80m	0 / -16	WA1J	-6 / -8	6	✓ Full exchange observed
10-02 17:52	80m	+9 / -	ZL2BBR	- / -	6	Partial capture
10-02 17:42	80m	+10 / -	ZL2BBR	- / -	6	Partial capture
10-02 16:19	80m	+14 / -	UB0SMX/P	- / -19	4	✓ Closing fragment
10-02 16:13	80m	- / -	DL9KM	-12 / -	7	Partial capture
10-02 16:11	80m	+1 / -	JJ1TKN	- / -25	5	✓ Closing fragment
10-02 15:33	80m	+6 / -	JH8WAH	- / -18	3	✓ Closing fragment
10-02 15:30	80m	+5 / -	RK0SC	- / +1	3	✓ Closing fragment
10-02 15:24	80m	-1 / -	JH1LON	- / -16	4	✓ Closing fragment
10-02 15:23	80m	-4 / -	JA8GWA	- / -22	2	✓ Closing fragment
10-02 15:21	80m	-5 / -	7M4HOA	- / -5	4	✓ Closing fragment
10-02 04:53	80m	-1 / -	KE4EB	- / -	7	Partial capture
10-02 04:50	80m	- / -	9A3MA	-7 / -	38	Partial capture
10-02 04:48	80m	+3 / -	KE4EB	- / -	4	Partial capture
10-02 04:31	80m	+13 / -	KB2ELA	- / -	4	Partial capture
10-02 04:22	80m	- / -	EA3EDU	-8 / -	4	Partial capture
10-02 04:20	80m	+19 / -	N0BUZ	- / -	3	Partial capture
10-02 04:18	80m	+12 / -	W9JJB	- / -22	2	✓ Closing fragment
10-02 04:16	80m	+16 / -	HK4D	- / -24	4	✓ Closing fragment
10-02 04:14	80m	+21 / -	KB4UF	- / -	3	Partial capture
10-02 04:11	80m	- / -	EA5HM	-20 / -	2	Partial capture
10-02 04:09	80m	+21 / -10	NI4Z	-13 / -20	8	✓ Full exchange observed
10-02 04:03	80m	+20 / -12	N2SCJ	-22 / -25	9	✓ Full exchange observed
10-02 03:59	80m	+20 / -	CO8CF	- / -25	3	Partial capture
10-02 03:40	80m	+8 / -	N1MRE	- / -24	6	✓ Closing fragment
10-01 19:32	80m	- / -	SP4WJ	-1 / -	18	Partial capture
10-01 19:28	80m	+4 / -	VK2IF	- / -18	5	✓ Closing fragment
10-01 19:22	80m	+10 / -	DU7/NW5H	- / -14	3	Partial capture
10-01 15:59	80m	+5 / -	BX4AP	- / -11	4	✓ Closing fragment
10-01 15:45	80m	+2 / -	VK6IR	- / -5	2	✓ Closing fragment
10-01 15:45	80m	+8 / -	FR1GZ	- / -15	4	✓ Closing fragment
10-01 15:24	80m	+1 / -	BV7RN	- / -25	4	✓ Closing fragment
10-01 14:42	80m	- / -	OZ1HPS	-20 / -	8	Partial capture
10-01 14:42	80m	-8 / -	JA9RRH	- / -14	2	✓ Closing fragment
10-01 14:41	80m	- / -	DK7AC	-18 / -	2	Partial capture
10-01 14:41	80m	-7 / -	JE3VRJ	- / -16	2	✓ Closing fragment
10-01 14:40	80m	-12 / -	JA7NPV	- / -15	2	✓ Closing fragment
10-01 14:36	80m	0 / -	JA3BFL	- / -9	7	✓ Closing fragment
10-01 14:34	80m	-5 / -	JE1POK	- / -20	2	✓ Closing fragment
10-01 14:33	80m	-4 / -	VK4PN	- / -19	2	✓ Closing fragment
10-01 14:32	80m	-1 / -	JF2PKP	- / -16	3	✓ Closing fragment
10-01 14:24	80m	-2 / -	JA5NSR	- / -12	14	Partial capture
10-01 14:23	80m	-4 / -	BA4RF	- / -	2	✓ Closing fragment
10-01 14:21	80m	-12 / -	JR4PWV	- / -7	2	✓ Closing fragment
10-01 14:17	80m	+7 / -	JJ7KKM	- / -9	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

80m

UTC    dB Audio  Message
165030  -4 2456  BX4AQ OH1MLZ KP23 (x2)
165230  +4 2240  CQ ZL OH1MLZ KP23 (x2)
165330  +7 2240  BX4AQ OH1MLZ KP23 (x8)
170615  +7 2240  A41DV OH1MLZ KP23 (x3)

60m

UTC    dB Audio  Message
044645  +8 2566  WB6RHC OH1MLZ KP23
050245 +13 2567  VE3OTL OH1MLZ KP23 (x4)
055900 +10 2492  N9NJY OH1MLZ KP23 (x7)
011200  +7 2058  KE8ZDV OH1MLZ KP23 (x3)

160m

UTC    dB Audio  Message
211845 +20 2599  <...> OH1MLZ KP23
211900  -9 2598  OH1MLZ DO1SWC JN58
211915 +19 2599  <...> OH1MLZ -23 (x3)
212130  +3 2098  OH1MLZ YL2SW +03 (x2)
212245 +17 2599  <...> OH1MLZ -23 (x5)
025615 +20 2599  CQ DX OH1MLZ KP23 (x3)

40m

UTC    dB Audio  Message
185030  +6  868  5Z4VJ OH1MLZ R-02 (x2)
185115  +2  869  OH1MLZ E78Y -15 (x7)
120845 -18 2363  KH8WW OH1MLZ KP23 (x5)
123500 -16 1471  OH1MLZ OH1TSM KP11

10m

UTC    dB Audio  Message
131830 -21 1754  OH1MLZ DN9SGE JO42 (x2)
133130 -23 1588  OH1MLZ 7Q7CT +16 (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.

FT8DB and SO8OO WebSDR are a hobby project maintained solo. ☕ Buy me a coffee