UZ5DM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Ukraine Most frequent locator attributed to this token: KN28

Receiver-side FT8 activity involving UZ5DM, decoded by SO8OO in southeastern Poland. 950 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 34 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-09-15.

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 950 FT8 messages attributed to UZ5DM as the transmitting token by decoded message structure across 34 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (74%), followed by 40 m (22%) and 80 m (5%). The busiest six-hour window was 05:00-11:00 UTC, containing 49% of decodes. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (65%); the estimated median was -2 dB.

Overview

950

Messages attributed

UTC dates decoded

134

Active 15-min windows

-2 dB

Estimated median S/N

Bands

80m · 45 40m · 205 20m · 699 10m · 1

First attributed message: 2026-06-07
Last attributed message: 2026-09-15 18:04 UTC

Observed FT8 message patterns

Attributed sample: 950 messages
Active dates: 34 UTC dates
Estimated median S/N: -2 dB
Estimated 10th-90th percentile: -16.7 to +11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 124, moderate (-15 to -9 dB) 208, strong (≥ -8 dB) 618.

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 UZ5DM in decoded directed-looking exchanges:

PD2WL · Netherlands ×4 F4VTR · France ×3 F4HSB · France ×3 M7KSV · England ×3 DL6ZOG · Fed. Rep. of Germany ×2 DL8RBL · Fed. Rep. of Germany ×2 IK4LZH · Italy ×2 IW5ALZ · Italy ×2 ON7IO · Belgium ×2 PI4TS · Netherlands ×2 YL3GAO · Latvia ×2 DL9KM · Fed. Rep. of Germany ×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 UZ5DM

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: KN28 · 665 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 283 km (approx.)
Last such locator decoded: 2026-09-15 18:02 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	UZ5DM S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-15 18:02	80m	+16 / +2	DO6BLK	-12 / -21	9	✓ Full exchange observed
09-15 17:59	80m	- / -	R1TAX	-8 / -	2	Partial capture
09-15 17:59	80m	+14 / -4	RA3ZOM	+11 / -4	6	✓ Full exchange observed
09-15 17:54	80m	+10 / -11	R6YBU	-8 / -17	17	✓ Full exchange observed
09-15 17:53	80m	+9 / -11	UT3SO	+15 / -15	5	✓ Full exchange observed
09-15 17:51	80m	+10 / -	SN100PKP	- / +4	2	Partial capture
09-15 17:50	80m	+13 / -	DL9KM	-7 / -15	3	✓ Closing observed
09-15 17:47	80m	+16 / +4	OE5ABL	0 / -4	4	✓ Full exchange observed
09-15 17:45	80m	- / -14	RA3V	-17 / -	3	Partial capture
09-15 17:42	80m	- / -	SP7IIX	+12 / -	2	✓ Closing fragment
09-15 16:53	80m	- / +5	DJ0QO	-17 / -	3	Partial capture
08-31 05:31	40m	- / -17	RW3RN	-7 / -	3	✓ Closing fragment
08-31 05:16	40m	- / -	SP3MIP	-10 / -	2	Partial capture
08-31 05:15	40m	- / -17	SM6KOB	-23 / -	3	Partial capture
08-31 04:35	20m	- / +6	EP2AES	-14 / -	3	Partial capture
08-30 08:23	20m	- / +4	F4IOH/P	+3 / -	3	✓ Closing fragment
08-30 08:11	20m	-16 / +8	HB9SFL	-4 / -5	4	✓ Full exchange observed
08-30 08:05	20m	-12 / -	DL7WSH	- / -13	10	Partial capture
08-30 07:55	20m	+8 / -	HB9ITZ	- / -7	2	✓ Closing fragment
08-30 07:51	20m	+8 / -	DH4FAI	- / -6	2	Partial capture
08-30 07:44	20m	+7 / -	IK0XBU/P	- / -8	2	Partial capture
08-30 07:32	20m	- / +9	2W0YOX	-4 / -	3	Partial capture
08-29 05:56	20m	- / -	IK4LZH	-9 / -	3	Partial capture
08-29 05:55	20m	- / -	IW5ALZ	-6 / -	4	Partial capture
08-28 17:59	20m	- / -15	UB4CLH	-3 / -	2	✓ Closing fragment
08-28 17:46	20m	- / +5	G4YOH	-7 / -	3	✓ Closing fragment
08-28 17:35	20m	- / +6	F4JLS	-6 / -	2	Partial capture
08-28 06:11	20m	- / -	UT7LG	-2 / -	2	Partial capture
08-28 05:29	20m	- / -11	M7KSV	-8 / -	2	✓ Closing fragment
08-27 17:50	20m	- / 0	IU3VXW	-14 / -	6	✓ Closing fragment
08-27 07:00	20m	-11 / -12	MM7CEH	-9 / -5	5	✓ Full exchange observed
08-27 06:37	20m	-5 / -2	M7MOK	-5 / -	5	✓ Closing observed
08-27 06:34	20m	-9 / -	IW5ALZ	-4 / -11	3	Partial capture
08-27 06:25	20m	-12 / -12	GM4YMI	-16 / -5	10	Partial capture
08-27 06:23	20m	- / -6	M7KSV	-2 / -	2	✓ Closing fragment
08-27 06:17	20m	-10 / -	LY2J	- / -7	2	Partial capture
08-27 06:13	20m	-13 / -	LY2J	- / -7	2	Partial capture
08-27 06:07	20m	-10 / +10	G0COG	-7 / -9	4	Partial capture
08-27 05:00	20m	- / 0	ZL2BX	-12 / -	2	✓ Closing fragment
08-27 04:58	20m	- / -6	VK3HA	-13 / -	2	✓ Closing fragment
08-27 04:41	20m	- / 0	WB2AA	-11 / -	2	✓ Closing fragment
08-27 04:41	20m	- / +3	WB6JJJ	-4 / -	4	✓ Closing fragment
08-27 04:38	20m	- / -	KE4EB	-9 / -	2	✓ Closing fragment
08-27 04:32	20m	- / -11	RQ6B	+2 / -	3	✓ Closing fragment
08-26 17:42	20m	- / -6	EA8CBP	-15 / -	2	✓ Closing fragment
08-26 17:35	20m	- / -21	PE1PBQ	+4 / -	5	✓ Closing fragment
08-26 17:28	20m	-20 / -13	M9VVE	0 / -14	6	✓ Full exchange observed
08-26 16:24	20m	- / -	PA3CNC	-6 / -	2	Partial capture
08-26 15:37	20m	-17 / -	OH1OCA	- / -	4	Partial capture
08-26 05:37	20m	- / +3	F4JFC	0 / -	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
180030 +15  591  UZ5DM RA3ZOM R-04
180045 +16 2090  RA3ZOM UZ5DM RRR
180100 +14  591  UZ5DM RA3ZOM 73
180115 +16 2090  CQ UZ5DM KN28 (x2)
180200 -13 2277  UZ5DM DO6BLK JN58
180215 +16 2090  CQ UZ5DM KN28
180230 -12 2277  UZ5DM DO6BLK JN58
180245 +17 2090  DO6BLK UZ5DM -21
180300 -14 2278  UZ5DM DO6BLK R+02
180315 +14 2090  DO6BLK UZ5DM RRR
180330 -14 2277  UZ5DM DO6BLK 73
180345 +15 2090  DO6BLK UZ5DM RRR
180400  -6 2277  UZ5DM DO6BLK 73
180415 +17 2090  DO6BLK UZ5DM RRR

40m

UTC    dB Audio  Message
054530  -9 1828  CQ UZ5DM KN28 (x15)

20m

UTC    dB Audio  Message
081030  -1 2408  DL7WSH UZ5DM -13
081100  -5 2408  CQ UZ5DM KN28
081145 -11 2614  UZ5DM HB9SFL +08
081200 -13 2408  HB9SFL UZ5DM R-05 (x2)
081315  +4 2614  UZ5DM HB9SFL 73
081430 -16 2408  CQ UZ5DM KN28
082315  -1  517  UZ5DM F4IOH/P JN25 (x3)
082815  +6 2204  UZ5DM G7ILZ IO93
083015 -18 2407  UZ5DM DL1HEW JO53
043515 -12 2104  UZ5DM EP2AES LM55 (x3)

10m

UTC    dB Audio  Message
140315 -16 1913  UZ5DM IW1PPB -12
140345 -18 1926  UZ5DM DO4RP R-11 (x2)
141215  +0 2108  UZ5DM IK1RQX JN44 (x3)
142415 -17 1589  UZ5DM PA5DL 73
142415  -2 1877  UZ5DM F1ODM -06
143115 -24 1913  UZ5DM DG2EBG JO31
144115  +2  453  UZ5DM DO1ID JO41 (x3)
125430 -10  728  UZ5DM LZ3CB KN32
132600  -7 2641  UZ5DM R6YBU LN04
134030 -17  993  UZ5DM DL2RH 73

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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