UB4HTD — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: European Russia Most frequent locator attributed to this token: LO43

Receiver-side FT8 activity involving UB4HTD, decoded by SO8OO in southeastern Poland. 27 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 5 UTC dates in the available aggregate history. Observed between 2026-09-09 and 2026-11-02.

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 27 FT8 messages attributed to UB4HTD as the transmitting token by decoded message structure across 5 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 40 m (44%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 15 40m · 12

First attributed message: 2026-09-09
Last attributed message: 2026-11-02 17:22 UTC

Observed FT8 message patterns

Attributed sample: 27 messages
Active dates: 5 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -23 to -12 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 11, moderate (-15 to -9 dB) 16, strong (≥ -8 dB) 0.

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 UB4HTD in decoded directed-looking exchanges:

RC9WC · Asiatic Russia ×3 UB6OAJ · European Russia ×2 RW3QW · European Russia ×2 UA3YFL · European Russia ×2 SV1PLR · Greece 9A3K · Croatia 9A5E · Croatia DK6WH · Fed. Rep. of Germany DL7ACA · Fed. Rep. of Germany ES2AJ · Estonia IK0BAL · Italy LA2VRA · Norway

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 UB4HTD

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: LO43 · 12 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,903 km (approx.)
Last such locator decoded: 2026-11-02 17:22 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	UB4HTD S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 17:12	80m	- / -19	LY3PW	-3 / -	8	Partial capture
11-02 16:50	80m	- / -18	RD3MF	-8 / -	2	Partial capture
11-02 16:47	80m	- / -8	R7CD	-7 / -	2	✓ Closing fragment
11-02 16:41	80m	- / -18	R2EC	+1 / -	3	✓ Closing fragment
11-02 16:39	80m	- / -13	RK6MC	-9 / -	5	✓ Closing fragment
11-02 16:38	80m	- / -22	R6FFB	-15 / -	2	Partial capture
11-02 16:32	80m	- / -5	UA4COA	+2 / -	2	✓ Closing fragment
11-02 16:30	80m	- / -16	RT1L	+2 / -	2	Partial capture
11-02 16:29	80m	- / -3	UA4FOH	-2 / -	2	✓ Closing fragment
11-02 16:17	80m	- / -16	RA2FGK	-4 / -	2	✓ Closing fragment
11-02 16:14	80m	- / -5	UA3UBV	-15 / -	3	✓ Closing fragment
11-02 16:11	80m	- / -22	R9FCS/4	-4 / -	2	Partial capture
11-02 16:06	80m	- / -14	RT1L	-4 / -	2	Partial capture
11-02 15:53	80m	- / -10	RQ3M	0 / -	2	✓ Closing fragment
11-02 15:51	80m	- / -	RA9CMO	-20 / -	2	Partial capture
11-02 15:50	80m	- / -3	RW3QW	-4 / -	2	✓ Closing fragment
11-02 15:49	80m	- / -14	R1NI	-6 / -	2	✓ Closing fragment
11-02 15:47	80m	- / +1	RC9WC	-9 / -	2	✓ Closing fragment
11-02 15:42	80m	- / -3	RM8W	-18 / -	2	✓ Closing fragment
11-01 17:30	80m	- / -11	EU2ABM	+4 / -	2	✓ Closing fragment
11-01 17:11	40m	- / -16	II4GCLB	+6 / -	2	Partial capture
11-01 17:03	40m	- / -7	R2AUH	-6 / -	2	✓ Closing fragment
11-01 16:40	40m	- / -19	9A3K	+18 / -	5	✓ Closing fragment
11-01 16:35	40m	- / -9	RX3DQ	+4 / -	2	✓ Closing fragment
11-01 16:31	40m	- / -20	9A3K	+23 / -	3	Partial capture
11-01 16:15	80m	- / -8	UD3T	-12 / -	2	✓ Closing fragment
11-01 16:07	80m	- / -22	RU4I	-9 / -	3	✓ Closing fragment
11-01 16:06	80m	- / -22	R6NA	-4 / -	2	✓ Closing fragment
11-01 15:59	80m	- / +1	R4FDK	-14 / -	2	✓ Closing fragment
11-01 15:46	80m	- / -15	R1MA	+4 / -	3	✓ Closing fragment
11-01 15:45	80m	- / -	R3MDJ	-12 / -	2	Partial capture
11-01 15:38	80m	- / -2	UA1AEL	+2 / -	2	✓ Closing fragment
11-01 15:37	80m	- / -16	RC9F	0 / -	2	✓ Closing fragment
11-01 15:34	80m	- / -11	R1BED	-14 / -	2	✓ Closing fragment
11-01 15:26	80m	- / -12	RZ6CO	-11 / -	4	✓ Closing fragment
11-01 15:23	80m	- / -19	R7CD	-4 / -	4	Partial capture
11-01 15:20	80m	- / -16	RA3TK	-8 / -	2	Partial capture
11-01 15:13	40m	- / -6	OH5KNL	+14 / -	2	✓ Closing fragment
11-01 14:57	40m	- / -	R6LKG	-13 / -	2	✓ Closing fragment
11-01 14:52	40m	- / -5	RA4ADF	-8 / -	5	✓ Closing fragment
11-01 14:51	40m	- / -21	PD2FS	-19 / -	4	Partial capture
11-01 14:41	40m	- / -15	RC9WC	-12 / -	2	✓ Closing fragment
11-01 14:39	40m	- / -	R6ML	-8 / -	2	Partial capture
11-01 14:21	40m	- / -19	RM7M	-12 / -	2	✓ Closing fragment
11-01 14:19	40m	- / +1	R6BH	-14 / -	2	✓ Closing fragment
10-27 19:02	80m	- / -15	R3BDQ	+1 / -	2	✓ Closing fragment
10-27 18:52	80m	- / -18	R3LDK	+4 / -	4	✓ Closing fragment
10-27 18:32	80m	- / -11	RA5AK	-11 / -	2	✓ Closing fragment
10-27 18:29	80m	- / -	RU3FM	-11 / -	2	Partial capture
10-27 18:29	80m	- / -	R8CW	-8 / -	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
101800 -16 1028  UB4HTD 9K2YM +04
104145  -1 2946  UB4HTD SV1PLR RR73

80m

UTC    dB Audio  Message
164700  -6 1442  UB4HTD R7CD R-08 (x2)
165030  -8 1648  UB4HTD RD3MF R-18 (x2)
165100 -16 2370  UB4HTD R6ZAJ KN98
171200  +3 1422  UB4HTD LY3PW -19 (x8)
172245 -12  411  CQ UB4HTD LO43
175015  +2 2221  UB4HTD R2PA -14

40m

UTC    dB Audio  Message
163615  +1  398  UB4HTD RX3DQ RR73
163945  -4  466  UB4HTD R6FX R-19
164015 +18 2310  UB4HTD 9A3K JN65 (x5)
165630 -17 2262  UB4HTD RV9CX RR73
170330  -5 2381  UB4HTD R2AUH -07 (x2)
171130  +6  399  UB4HTD II4GCLB -16 (x2)
171500  +6  398  UB4HTD RR73; RA4ADF <...> -08
171800 -13 2641  UB4HTD R1QF -13
172500 -10 2925  UB4HTD RD3FY KO85

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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